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33. Bigloo The Programming Language (4.7a) User manual for version 4.7a February 2026 -- Compiler description

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Compiler description
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### 33.1 C requirement
Instead of producing assembly code, Bigloo produces C code. This C code is ISO-C compliant [IsoC]. So, it is necessary to have an ISO-C compiler. The current version has been developed with `gcc` [Stallman95].
### 33.2 JVM requirement
In order to compile the Bigloo JVM back-end, you have to be provided with a JDK 1.2 or more recent (available at `http://www.javasoft.com`). The JVM must support for `-noverify` option because, by default, Bigloo produces JVM code that is not conform to the rules enforced by the Java byte code verifiers.
### 33.3 Linking
It is easier to use Bigloo for linking object files which have been compiled by Bigloo. An easy way to perform this operation is, after having compiled all the files using the `-c` option, to invoke Bigloo with the name of the compiled files. When Bigloo is only given object file name as argument, it searches in the current directory and the directory named in the `*load-path*` list the Scheme source file in order to perform a correct link. Scheme source files are supposed to be ended by the suffix `.scm`. Additional suffixes can be added using the `-suffix` option. Hence, if source files are named foo1.sc and foo2.sc, a link command line could look like:
    bigloo -suffix sc foo1.o foo2.o -o foo
Note: In order to understand how the Bigloo linkers operates and which libraries it uses, it might be useful to use the `-v2` option which unveil all the details of the compilation and the link.
### 33.4 The compiler environment and options
There are four ways to change the behaviour of Bigloo. Flags on the command line, the `option` module clause runtime-command file and environment variables See Modules. When the compiler is invoked, it first gets the environment variables, then it scans the runtime-command file and, at end, it parses the command line. If the same option is set many times, Bigloo uses the last one.
### 33.4.1 Efficiency
In order to get maximum speed, compile with the `-Obench` option. This will enable all compiler optimization options and disable dynamic type checks. To improve arithmetic performance see next section.
### 33.4.2 Genericity of arithmetic procedures
By default, arithmetic procedures are generic. This means that it is allowed to use them with flonum and fixnum. This feature, of course, implies performances penalty. To improve performance, you may use specialized procedures (such as `+fx`, `=fx`, ... or `+fl`, `=fl`, ...) but, it is possible to suppress the genericity and to make all generic arithmetic procedures (`=` for example) fixnum ones. For this you must use the compiler option `-farithmetic`, or add the following module clause `(option (set! *genericity* #f))` in your module declaration.
### 33.4.3 Safety
It is possible to generate safe or unsafe code. The safety's scope is `type`, `arity`, `version` and `range`. Let's see an example:
    (define (foo f v indice)
       (car (f (vector-ref v indice))))
In safe mode, the result of the compilation will be:
    (define (foo f v indice)
      (let ((pair
            (if (and (procedure? f)
                  ;; type check
                  (= (procedure-arity f) 1))
                  ;; arity check
               (if (vector? v)
                  ;; type check
                  (if (and (integer? k)
                        ;; type check
                        (>= k 0)
                        ;; range check
                        (< k (vector-length v)))
                        ;; range check
                    (f (vector-ref v indice))
                    (error ...))
                  (error ...))
               (error ...))))
        (if (pair? pair)
           ;; type check
           (car pair)
           (error ...))))
It is possible to remove some or all safe checks. For example, here is the result of the compilation where safe check on types have been removed:
    (define (foo f v indice)
      (let ((pair (if (= (procedure-arity f) 1)
                 ;; arity check
                 (if (and (>= k 0)
                       ;; range check
                       (< k (vector-length v)))
                       ;; range check
                    (f (vector-ref v indice))
                    (error ...))
                 (error ...))))
         (car pair)))
### 33.4.4 The runtime-command file
Each Bigloo's user can use a special configuration file. This file must be named ```.bigloorc`'' or ```~/.bigloorc`''. Bigloo tries to load one of these in this order. This file is a Scheme file. Bigloo exports variables which allow the user to change the behavior of the compiler. All these variables can be checked using the -help2 option. The Bigloo's runtime command file is read before the arguments are parsed.
### 33.4.5 The Bigloo command line
If no input file is specified, Bigloo enters its interpreter. Here is the exhaustive list of Bigloo options and configuration variables:
    usage: bigloo [options] [name.suf]

    Misc:
       -                                  Read source code on current input channel
       -help,--help                       This help message
       -help2                             The exhaustive help message
       -help-manual                       The help message formatted for the manual
       -o FILE                            Name the output FILE
       --to-stdout                        Write C code on current output channel
       -c                                 Suppress linking and produce a .o file
       -y                                 Generate a shared library
       -suffix SUFFIX                     Recognize suffix as Scheme source
       -afile FILE                        Name of the access file
       -access MODULE FILE                Set access between module and file
       -jfile FILE                        Name of the Jvm package file
       -jadd MODULE QTYPE                 Set JVM qualifed type name for module
       -main FUN                          Set the main function
       -with MODULE                       Import addition module
       -multiple-inclusion                Enables multiple inclusions of the Bigloo includes
       -library LIBRARY                   Compile/link with additional Bigloo library
       -srfi SRFI                         Declares srfi support
       -dload-sym                         Emit a Bigloo dynamic loading entry point
       -dload-init-sym NAME               Emit a Bigloo dynamic loading entry point, named NAME
       -dload-init-gc                     For GC initialization for dynamic code
       -heapsize SIZE                     Set the initial heap size value (in megabyte)

    Configuration and path:
       -version                           The current release
       -revision                          The current release (short format)
       -query                             Dump the current configuration
       -q                                 Do not load any rc file
       -eval STRING                       Evaluate STRING before compiling
       -load FILE                         Load FILE before compiling
       -I DIR                             Add DIR to the load path
       -lib-dir DIR                       Set lib-path to DIR
       -L NAME                            Set additional library path
       -lib-version VERSION               Set the Bigloo library version
       -libgc-version VERSION             Set the Bigloo GC library version
       -libgc GC                          Use the given GC library

    Back-end:
       -native                            Compile module to native object file (via C)
       -jvm                               Compile module to JVM .class files
       -wasm                              Compile module to WASM .wat file
       -saw                               Cut the AST in the saw-mill
       -no-saw                            Disable saw back-ends
       -i                                 Interprete module

    Dialect:
       -snow                              Compiles a snow source code
       -scmpkg,-spi                       Compiles a ScmPkg source code
       -nil                               Evaluate '() as #f in `if' expression
       -call/cc                           Enable call/cc function
       -hygien                            Obsolete (R5rs macros are always supported)
       -fidentifier-syntax SYNTAX         Identifiers syntax "r5rs" (default) or "bigloo"
       -fno-reflection                    Deprecated
       +fno-reflection                    Deprecated
       -fclass-nil                        Deprecated
       -fno-class-nil                     Deprecated
       -farithmetic                       Suppress genericity of arithmetic operators
       -farithmetic-overflow              Suppress arithmetic overflow checks
       -fno-arithmetic-overflow           Enable arithmetic overflow checks
       -fno-arithmetic-overflow           Enable arithmetic overflow checks
       -farithmetic-new-overflow          Enable the new overflow arithmetic checks
       -fno-arithmetic-new-overflow       Disable the new overflow arithmetic checks
       -fcase-sensitive                   Case sensitive reader (default)
       -fcase-insensitive                 Case insensitive reader (downcase symbols)
       -fallow-type-redefinition          allow type redifinition

    Optimization:
       -Obench                            Benchmarking mode
       -O[0..6]                           Optimization modes
       -ftagged-fxop                      Enable tagged fix-ops optimization
       -fno-tagged-fxop                   Disable tagged fix-ops optimization
       -ffloop                            Enable flonum specialization
       -fno-flop                          Disable flonum specialization
       -fprebox                           Enable box/unbox optimization
       -fno-prebox                        Disable box/unbox optimization
       -fcfa                              Enable CFA
       -fno-cfa                           Disable CFA
       -fcfa-arithmetic                   Enable arithmetic spec. (see -farithmetic-overflow)
       -fno-cfa-arithmetic                Disable arithmetic spec.
       -fcfa-arithmetic-fixnum            Enable fixnum arithmetic spec.
       -fno-cfa-arithmetic-fixnum         Disable fixnum arithmetic spec.
       -fcfa-arithmetic-flonum            Enable flonum arithmetic spec. (enabled from -O2)
       -fno-cfa-arithmetic-flonum         Disable flonum arithmetic spec.
       -fcfa-tracking                     Enable CFA tracking (enabled from -O2)
       -fno-cfa-tracking                  Disable CFA tracking
       -fcfa-pair                         Enable CFA pairs approximations
       -fno-cfa-pair                      Disable CFA pairs approximations
       -fcfa-unbox-closure-args           Enable CFA unboxed closure args (enabled from -O2)
       -fno-cfa-unbox-closure-args        Disable CFA unboxed closure args
       -fno-cfa-local-function            Disable CFA local function tracking
       -funroll-loop                      Enable loop unrolling (enabled from -O3)
       -fno-unroll-loop                   Disable loop unrolling
       -fno-loop-inlining                 Disable loop inlining
       -floop-inlining                    Enable loop inlining (default)
       -fno-inlining                      Disable inline optimization
       -fno-user-inlining                 Disable user inline optimization
       -fisa                              Inline isa? type predicate
       -fno-isa                           Inline isa? type predicate
       -fbeta-reduce                      Enable simple beta reduction (enabled from -O2)
       -fno-beta-reduce                   Disable simple beta reduction
       -fdataflow                         Enable dataflow optimizations (enabled from -O)
       -fno-dataflow                      Disable dataflow optimizations
       -fdataflow-for-errors              Enable dataflow optimizations for improviing type error messages
       -fno-dataflow-for-errors           Disable dataflow optimizations for improviing type error messages
       -fdataflow-types                   Enable type dataflow optimizations (enabled from -O2)
       -fno-dataflow-types                Disable type dataflow optimizations
       -fpeephole                         Enable init flow
       -fno-peephole                      Disable init flow
       -finitflow                         Enable init flow
       -fno-initflow                      Disable init flow
       -fsync-failsafe                    Enable failsafe synchronize optimization
       -fno-sync-failsafe                 Disable failsafe synchronize optimization
       -fO-macro                          Enable Optimization macro (default)
       -fno-O-macro                       Disable Optimization macro
       -ftailc                            Enable tail-call optimization
       -fno-tailc                         Disable tail-call optimization
       -fglobal-tailc                     Enable global tail-call optimization
       -fno-global-tailc                  Disable global tail-call optimization
       -freturn                           Enable set-exit replacement with return (-O3)
       -fno-return                        Disable set-exit replacement
       -freturn-goto                      Enable local set-exit replacement with return (-O3)
       -fno-return-goto                   Disable local set-exit replacement
       -fstackable                        Enable stackable optimization
       -fno-stackable                     Disable stackable optimization
       -funcell                           Enable cell removal
       -fno-uncell                        Disable cell removal
       -funsafe-cell                      Enable unsafe-cell generation (enable from -O2)
       -fno-unsafe-cell                   Disable unsafe-cell generation
       -fnums                             Enable fx/fl double predicates optimization
       -fno-nums                          Disable fx/fl double predicates optimization
       -ffastfl                           Enable fast-flonum optimization
       -fno-fastfl                        Disable fast-flonumm optimization
       -flocal-exit                       Inline with-handler and bind-exit
       -fno-local-exit                    Compile with-handler and bind-exit in separate functions
       -fsaw-realloc                      Enable saw register re-allocation
       -fsaw-regalloc                     Enable saw register allocation
       -fno-saw-regalloc                  Disable saw register allocation
       -fsaw-bbv                          Enable saw basic-blocks versionning
       -fno-saw-bbv                       Disable saw basic-blocks versionning
       -fsaw-bbv-fun NAME                 Apply bbv on these functions
       -fsaw-regalloc-msize SIZE          Set the register allocation body size limit
       -fsaw-regalloc-fun NAME            Allocate registers on this very function
       -fno-saw-regalloc-fun NAME         Don't allocate registers on this very function
       -fsaw-regalloc-onexpr              Allocate registers on expressions
       -fno-saw-regalloc-onexpr           Don't allocate registers on expressions
       -fsaw-spill                        Enable saw spill optimization

    Safety:
       -unsafe[atrsvleh]                  Don't check [type/arity/range/struct/version/library/eval/heap]
       -safe[atrsvle]                     Enforce check [type/arity/range/struct/version/library/eval]

    Debug:
       -glines                            Emit # line directives
       -gbdb-no-line                      Don't emit # line directives
       -gbdb[23]                          Compile with bdb debug informations
       -gself                             Enables self compiler debug options
       -gmodule                           Debug module initialization
       -gerror-localization               Localize error calls in the source code
       -gno-error-localization            Don't localize error calls in the source code
       -gjvm                              Annote JVM classes for debug
       -gtrace[12all]                     Instrument for stack tracing
       -g[234]                            Produce Bigloo debug informations
       -cg                                Compile C files with debug option
       -export-all                        Eval export-all all routines
       -export-exports                    Eval export-exports all routines
       -export-mutable                    Enables Eval redefinition of all "::obj" routines

    Profiling:
       -p[2g]                             Compile for cpu profiling
       -pmem[level]                       Compile for memory profiling
       -psync                             Profile synchronize expr (see $exitd-mutex-profile)

    Verbosity:
       -s                                 Be silent and inhibit all warning messages
       -v[234]                            Be verbose
       -hello                             Say hello
       -no-hello                          Dont' say hello even in verbose mode
       -w                                 Inhibit all warning messages
       -wslots                            Inhibit overriden slots warning messages
       -Wvariables                        Enable overriden variable warning messages
       -Wtypes                            Enable type check warning messages
       -Wslot                             Enable default slot value warning messages
       -Wno-slot                          Disable default slot value warning messages
       -Wall                              Warn about all possible type errors
       -Werror=type                       Treat type warnings as error

    Compilation modes:
       <-/+>rm                            Don't or force removing .c or .il files
       -extend NAME                       Extend the compiler
       -extend-module EXP                 Extend the module syntax
       -fsharing                          Attempt to share constant data
       -fno-sharing                       Do not attempt to share constant data
       -fmco                              Produce an .mco file
       -fmco-include-path DIR             Add dir to mco C include path

    Native specific options:
       -cc COMPILER                       Specify the C compiler
       -stdc                              Generate strict ISO C code
       -copt STRING                       Invoke cc with STRING
       -cheader STRING                    C header
       -cfoot STRING                      C foot
       -rpath PATH                        Add C runtime-path (rpath)
       -ldopt STRING                      Invoke ld with STRING
       -ldpostopt STRING                  Invoke ld with STRING (end of arguments)
       --force-cc-o                       Force the C compiler to use -o instead of mv
       -ld-relative                       Link using -l notation for libraries (default)
       -ld-absolute                       Link using absolute path names for libraries
       -static-bigloo                     Link with the static bigloo library
       -static-all-bigloo                 Link with static version of all bigloo libraries
       -ld-libs1                          Add once user libraries when linking
       -ld-libs2                          Add twice user libraries when linking (default)
       -lLIBRARY                          Link with host library
       -auto-link-main                    Enable main generation when needed for linking
       -no-auto-link-main                 Disable main generation
       --force-gc-roots                   Register global variables as GC roots

    Jvm specific options:
       -jvm-shell SHELL                   Shell for JVM scripts ("sh", "msdos")
       -jvm-purify                        Produce byte code verifier compliant JVM code (default)
       -no-jvm-purify                     Don't care about JVM code verifier
       -jvm-mainclass CLASS               JVM main class
       -jvm-classpath PATH                JVM application classpath
       -jvm-bigloo-classpath P            JVM Bigloo rts classpath
       -jvm-path-separator SEP            Set the JVM classpath separator
       -jvm-directory NAME                Directory where to store class files.
       -jvm-catch-errors                  Catch internal JVM errors
       -no-jvm-catch-errors               Don't catch internal JVM errors
       -jvm-jarpath NAME                  Set the JVM classpath for the produced jar file
       -jvm-cinit-module                  Enable JVM class constructors to initiliaze bigloo modules
       -no-jvm-cinit-module               Disable JVM class constructors to initiliaze bigloo modules
       -jvm-char-info                     Generate char info for the debugger (in addition to line info)
       -no-jvm-char-info                  Do not generate char info for the debugger
       -fjvm-inlining                     Enable JVM back-end inlining
       -fjvm-constr-inlining              Enable JVM back-end inlining for constructors
       -fno-jvm-inlining                  Disable JVM back-end inlining
       -fno-jvm-constr-inlining           Disable JVM back-end inlining for constructors
       -fjvm-peephole                     Enable JVM back-end peephole
       -fno-jvm-peephole                  Disable JVM back-end peephole
       -fjvm-branch                       Enable JVM back-end branch
       -fno-jvm-branch                    Disable JVM back-end branch
       -fjvm-fasteq                       EQ? no longer works on integers (use =FX)
       -fno-jvm-fasteq                    Disable JVM back-end fasteq transformation
       -jvm-env VAR                       Make the shell variable visible to GETENV
       -jvm-jar                           Enable JVM jar files generation
       -no-jvm-jar                        Disable JVM jar files generation (default)
       -jvm-java FILE                     Use FILE as JVM
       -jvm-opt STRING                    JVM invocation option

    Traces:
       -t[1|2|3|4]                        Generate a trace file (*)
       +tPASS                             Force pass to be traced
       -shape[mktTalunx]                  Some debugging tools (private)

    Compilation stages:
       -mco                               Stop after .mco production
       -syntax                            Stop after the syntax stage (see -hygiene)
       -expand                            Stop after the preprocessing stage
       -expand-module                     Produce the expanded module clause
       -ast                               Stop after the ast construction stage
       -syntax-check                      Stop after checking syntax
       -bdb-spread-obj                    Stop after the bdb obj spread stage
       -trace                             Stop after the trace pass
       -callcc                            Stop after the callcc pass
       -bivalue                           Stop after the bivaluation stage
       -inline                            Stop after the inlining stage
       -inline+                           Stop after the 2nd inlining stage
       -beta                              Stop after the constant beta reduction stage
       -fail                              Stop after the failure replacement stage
       -abound                            Stop after the array bound checking stage
       -peephole                          Stop after the type peephole stage
       -initflow                          Stop after the type initflow stage
       -narrow                            Stop after the scope narrowing stage
       -tlift                             Stop after the type lifting stage
       -reduce0                           Stop after the early reduction stage
       -dataflow                          Stop after the type dataflow stage
       -dataflow+                         Stop after the second type dataflow stage
       -dataflow++                        Stop after the third type dataflow stage
       -fuse                              Stop after the fuse stage
       -user                              Stop after the user pass
       -fxop                              Stop after the fx-ops optimization
       -flop                              Stop after the flonum specialization optimization
       -prebox                            Stop after the prebox optimization
       -coerce                            Stop after the type coercing stage
       -effect                            Stop after the effect stage
       -effect+                           Stop after the 2nd effect stage
       -reduce                            Stop after the reduction opt. stage
       -reduce+                           Stop after the 2nd reduction opt. stage
       -reduce-                           Stop after the very first reduction stage
       -assert                            Stop after the assertions stage
       -cfa                               Stop after the cfa stage
       -stackable                         Stop after the stackable stage
       -closure                           Stop after the globalization stage
       -recovery                          Stop after the type recovery stage
       -bdb                               Stop after the Bdb code production
       -cnst                              Stop after the constant allocation
       -integrate                         Stop after the integration stage
       -tailc                             Stop after the tailc stage
       -return                            Stop after the return stage
       -uncell                            Stop after the cell removal stage
       -nums                              Stop after the nums stage
       -fastfl                            Stop after the fastfl stage
       -isa                               Stop after the isa stage
       -init                              Stop after the initialization construction stage
       -classgen                          Produce an include file for class accessors
       -egen                              Produce an include file for effects (requires -saw)
       -hgen                              Produce a C header file with class definitions
       -cgen                              Do not C compile and produce a .c file
       -indent                            Produce an indented .c file
       -jvmas                             Produce a JVM .jas file

    Constant initialization:
       -init-[lib|read|intern]            Constants initialization mode
       -init-object-[legacy|staged]       Object system initialization

    Bootstrap and setup:
       -mklib                             Compile a library module
       -mkaddlib                          Compile an additional library module
       -mkheap                            Build an heap file
       -mkaddheap                         Build an additional heap file
       -mkdistrib                         Compile a main file for a distribution
       --license                          Display the Bigloo license and exit
       -LICENSE                           Add the license to the generated C files
       -heap NAME                         Specify an heap file (or #f to not load heap)
       -heap-library LIB                  The library the heap belongs to
       -dump-heap NAME                    Dump the content of a heap
       -addheap NAME                      Specify an additional heap file
       -fread-internal                    Read source from binary interned file
       -fread-internal-src                Read source only from binary interned file
       -fread-internal-src-file-name NAME Set fake source file name
       -fread-plain                       Read source from plain text file
       -target LANG                       DON'T USE, (see -native, -jvm)
       --                                 end bigloo arg parsing

    Shell Variables:
       - TMPDIR
         temporary directory (default "/tmp")
       - BIGLOOLIB
         libraries' directory
       - BIGLOOHEAP
         the initial heap size in megabytes (4 MB by default)
       - BIGLOOMAXHEAP
         the maxium heap size in megabytes (unlimited by default)
       - BIGLOOSTACKDEPTH
         the error stack depth printing
       - BIGLOOLIVEPROCESS
         the maximum number of Bigloo live processes
       - BIGLOOTRACE
         list of active traces
       - BIGLOOGCTHREADS
         Max GC threads number

    Runtime Command file:
       - ~/.bigloorc

    ------------
     * : only available in developing mode
     . : option enabled from -O3 mode

    Bigloo Control Variables:
       All the Bigloo control variables can be changed from the
       interpreter, by the means of the `-eval' option, or using
       the module clause `option'. For instance the option
       "-eval '(set! *strip* #t)'" will set the variable
       `*strip*' to the value `#t'.
       These variables are:

       - *access-file-default* :
         The default access file name
         default: ".afile"
       - *access-files* :
         The access file names
         default: ()
       - *additional-bigloo-libraries* :
         The user extra Bigloo libraries
         default: ()
       - *additional-bigloo-zips* :
         The user extra Bigloo Zip files
         default: ()
       - *additional-heap-name* :
         A name of an additional heap file name to be build
         default: #f
       - *additional-heap-names* :
         A list of Bigloo additional heap file name
         default: ()
       - *additional-include-foreign* :
         The additional C included files
         default: ()
       - *allow-type-redefinition* :
         If true, allow type redefinitions
         default: #f
       - *ast-case-sensitive* :
         Case sensitivity
         default: #t
       - *auto-link-main* :
         Enable automatically a main generation when linking
         default: #t
       - *auto-mode* :
         auto-mode (extend mode) list
         default: (("ml" . "caml") ("mli" . "caml") ("oon" . "meroon") ("snow" . "snow") ("spi" . "pkgcomp"))
       - *bdb-debug* :
         Bdb debugging mode
         default: 0
       - *bigloo-abort?* :
         Do we have the bigloo-abort function in executables?
         default: #f
       - *bigloo-lib* :
         The Bigloo library
         default: bigloo
       - *bigloo-libraries-c-setup* :
         A list of C functions to be called when starting the application
         default: ()
       - *bigloo-licensing?* :
         Add the Bigloo license ?
         default: #f
       - *bigloo-name* :
         The Bigloo name
         default: "Bigloo (4.7a)"
       - *bigloo-specific-version* :
         The Bigloo specific version
         default: ""
       - *bigloo-tmp* :
         The tmp directory name
         default: "/tmp"
       - *bigloo-user-lib* :
         The user extra C libraries
         default: ("-ldl" "-lresolv" "-lunistring" "-lpcre2-8" "-lgmp" "-lm" "-lc")
       - *bigloo-version* :
         The Bigloo major release number
         default: "4.7a"
       - *bmem-profiling* :
         Instrument code for bmem profiling
         default: #f
       - *c-debug* :
         C debugging mode?
         default: #f
       - *c-debug-lines-info* :
         Emit # line directives
         default: #f
       - *c-debug-option* :
         cc debugging option
         default: "-g"
       - *c-files* :
         The C source files
         default: ()
       - *c-object-file-extension* :
         The C object file extension
         default: "o"
       - *c-split-string* :
         C split long strings
         default: #f
       - *c-suffix* :
         C legal suffixes
         default: ("c")
       - *c-tail-call* :
         C tail call?
         default: #unspecified
       - *c-user-foot* :
         C foot
         default: ()
       - *c-user-header* :
         C header
         default: ()
       - *call/cc?* :
         Shall we enable call/cc?
         default: #f
       - *cc* :
         The C compiler
         default: "gcc"
       - *cc-move* :
         Use mv instead of -o when C compiling
         default: #t
       - *cc-o-option* :
         The C compiler -o option
         default: "-o "
       - *cc-options* :
         cc options
         default: ("")
       - *cc-style* :
         The C compiler style
         default: "gcc"
       - *cflags* :
         The C compiler option
         default: " -Wpointer-arith -Wswitch -Wtrigraphs -Wno-alloca-larger-than -DBGL_BOOTCONFIG  -Wno-unused-value -Wno-parentheses-equality -Wno-parentheses -Wno-invalid-source-encoding -Wno-return-type -Wno-trigraphs"
       - *cflags-optim* :
         The C compiler optimization option
         default: "-O3"
       - *cflags-prof* :
         The C compiler profiling option
         default: "-pg -fno-inline  -Wpointer-arith -Wswitch -Wtrigraphs -Wno-alloca-larger-than -DBGL_BOOTCONFIG  -Wno-unused-value -Wno-parentheses-equality -Wno-parentheses -Wno-invalid-source-encoding -Wno-return-type -Wno-trigraphs"
       - *cflags-rpath* :
         The C compiler rpath option
         default: ("/home/serrano/prgm/project/bigloo/4.7a/lib/bigloo/4.7a")
       - *compiler-debug* :
         Debugging level
         default: 0
       - *compiler-debug-trace* :
         Debugging trace level
         default: 0
       - *compiler-sharing-debug?* :
         Compiler self sharing debug
         default: #f
       - *compiler-stack-debug?* :
         Compiler self stack trace debug
         default: #f
       - *compiler-type-debug?* :
         Compiler self type debug
         default: #f
       - *csharp-suffix* :
         C# legal suffixes
         default: ("cs")
       - *debug-module* :
         Module initilazation debugging
         default: 0
       - *default-lib-dir* :
         Depreacted, don't use
         default: "/home/serrano/prgm/project/bigloo/4.7a/lib/bigloo/4.7a"
       - *dest* :
         The target name
         default: #f
       - *dlopen-init* :
         Emit a standard Bigloo dynamic loading init entry point
         default: #f
       - *dlopen-init-gc* :
         Emit a standard GC init call when initialization the module
         default: #f
       - *double-ld-libs?* :
         Do we include the additional user libraries twice?
         default: #t
       - *error-localization* :
         Localize error calls in the source code
         default: #f
       - *eval-options* :
         A user variable to store dynamic command line options
         default: ()
       - *extend-entry* :
         Extend entry
         default: #f
       - *garbage-collector* :
         The garbage collector
         default: boehm
       - *gc-custom?* :
         Are we using a custom GC library?
         default: #t
       - *gc-force-register-roots?* :
         Force GC roots registration for global variables (for experts only)
         default: #t
       - *gc-lib* :
         The Gc library
         default: bigloogc
       - *global-tail-call?* :
         Do we apply the self-global-tail-call stage?
         default: #f
       - *heap-base-name* :
         The Bigloo heap base name
         default: "bigloo"
       - *heap-dump-names* :
         The name of the heap to be dumped
         default: ()
       - *heap-jvm-name* :
         The Bigloo heap file name for the JVM backend
         default: "bigloo.jheap"
       - *heap-library* :
         The library the heap belongs to
         default: bigloo
       - *heap-name* :
         The Bigloo heap file name
         default: "bigloo.heap"
       - *heap-wasm-name* :
         The Bigloo heap file name for the WASM backend
         default: "bigloo.wheap"
       - *hello* :
         Say hello (when verbose)
         default: #f
       - *include-foreign* :
         The C included files
         default: ("bigloo.h")
       - *include-multiple* :
         Enable/disable multiple inclusion of same file
         default: #f
       - *indent* :
         The name of the C beautifier
         default: "indent -npro -bap -bad -nbc -bl -ncdb -nce -nfc1 -ip0 -nlp -npcs -nsc -nsob -cli0.5 -di0 -l80 -d1 -c0 -ts2 -st"
       - *init-mode* :
         Module initialization mode
         default: read
       - *inlining-kfactor* :
         Inlining growth factor
         default: #<procedure:559874b55900.1>
       - *inlining-reduce-kfactor* :
         Inlinine growth factor reductor
         default: #<procedure:559874b55890.1>
       - *inlining?* :
         Inlining optimization
         default: #t
       - *interpreter* :
         Shall we interprete the source file?
         default: #f
       - *jvm-bigloo-classpath* :
         JVM Bigloo classpath
         default: #f
       - *jvm-catch* :
         Catch internal errors
         default: #t
       - *jvm-cinit-module* :
         Enable JVM class constructors to initiliaze bigloo modules
         default: #f
       - *jvm-classpath* :
         JVM classpath
         default: "."
       - *jvm-debug* :
         JVM debugging mode?
         default: #f
       - *jvm-directory* :
         JVM object directory
         default: #f
       - *jvm-env* :
         List of environment variables to be available in the compiled code
         default: ()
       - *jvm-foreign-class-id* :
         The identifier of the Jlib foreign class
         default: foreign
       - *jvm-foreign-class-name* :
         The name of the Jlib foreign class
         default: "bigloo.foreign"
       - *jvm-jar?* :
         Enable/disable a JAR file production for the JVM back-end
         default: #f
       - *jvm-jarpath* :
         JVM jarpath
         default: #f
       - *jvm-java* :
         JVM to be used to run Java programs
         default: "java"
       - *jvm-mainclass* :
         JVM main class
         default: #f
       - *jvm-options* :
         JVM options
         default: ""
       - *jvm-path-separator* :
         JVM classpath
         default: #f
       - *jvm-shell* :
         Shell to be used when producing JVM run scripts
         default: "sh"
       - *ld-debug-option* :
         The C linker debugging option
         default: "-g "
       - *ld-library-dir* :
         Depreacted, don't use
         default: "/home/serrano/prgm/project/bigloo/4.7a/lib/bigloo/4.7a"
       - *ld-o-option* :
         The C linker -o option
         default: "-o "
       - *ld-optim-flags* :
         The C linker optimization flags
         default: ""
       - *ld-options* :
         ld options
         default: " "
       - *ld-post-options* :
         ld post options
         default: ("")
       - *ld-relative* :
         Relative or absolute path names for libraries
         default: #t
       - *ld-style* :
         ld style
         default: "gcc"
       - *lib-dir* :
         The lib dir path
         default: ("." "/home/serrano/prgm/project/bigloo/4.7a/lib/bigloo/4.7a")
       - *lib-mode* :
         Lib-mode compilation?
         default: #f
       - *lib-src-dir* :
         The lib dir path
         default: "runtime"
       - *load-path* :
         The load path
         default: ("." "/home/serrano/prgm/project/bigloo/4.7a/lib/bigloo/4.7a")
       - *local-exit?* :
         If false, set-ex-it nodes force the creation of a globalized function
         default: #f
       - *max-c-foreign-arity* :
         Max C function arity
         default: 16
       - *max-c-token-length* :
         Max C token length
         default: 1024
       - *mco-include-path* :
         Module checksum C include path
         default: (".")
       - *mco-suffix* :
         Module checksum object legal suffixes
         default: ("mco")
       - *module-checksum-object?* :
         Produce a module checksum object (.mco)
         default: #f
       - *multi-threaded-gc?* :
         Are we using a multi-threaded GC?
         default: #f
       - *o-files* :
         The additional obect files
         default: ()
       - *obj-suffix* :
         Object legal suffixes
         default: ("o" "a" "so")
       - *object-init-mode* :
         Object initialization mode
         default: stagged
       - *optim* :
         Optimization level
         default: 0
       - *optim-O-macro?* :
         Enable optimization by macro-expansion
         default: #f
       - *optim-atom-inlining?* :
         Skip atom in inlining parameter counting
         default: #t
       - *optim-cfa-apply-tracking?* :
         Track values across apply
         default: #f
       - *optim-cfa-fixnum-arithmetic?* :
         Enable refined fixnum arithmetic specialization
         default: #f
       - *optim-cfa-flonum-arithmetic?* :
         Enable refined flonum arithmetic specialization
         default: #f
       - *optim-cfa-force-loose-local-function?* :
         Force loosing local function approximations (for debugging)
         default: #f
       - *optim-cfa-free-var-tracking?* :
         Enable closure free-variables specialization
         default: #f
       - *optim-cfa-pair-quote-max-length* :
         Maximum length for pair literal tracking
         default: 4
       - *optim-cfa-pair?* :
         Track values across pairs
         default: #f
       - *optim-cfa-unbox-closure-args* :
         Unbox closure arguments
         default: #f
       - *optim-cfa?* :
         Enable CFA
         default: #t
       - *optim-dataflow-for-errors?* :
         Enable simple dataflow optimization for eliminating bad error messages
         default: #t
       - *optim-dataflow-types?* :
         Enable dataflow optimization for types
         default: #f
       - *optim-dataflow?* :
         Enable simple dataflow optimization
         default: #f
       - *optim-fastfl?* :
         Optimize fast-flonum optimization
         default: #f
       - *optim-initflow?* :
         Enable initflow optimization for global variables
         default: #f
       - *optim-integrate?* :
         Enable function integration (closure analysis)
         default: #t
       - *optim-isa?* :
         Enable isa type tests optimization (inlining)
         default: #f
       - *optim-jvm* :
         Enable optimization by inlining jvm code
         default: 0
       - *optim-jvm-branch* :
         Enable JVM branch tensioning
         default: 0
       - *optim-jvm-constructor-inlining* :
         Enable JVM inlining for constructors
         default: 0
       - *optim-jvm-fasteq* :
         EQ? no longer works on integers (use =FX instead)
         default: #f
       - *optim-jvm-inlining* :
         Enable JVM inlining
         default: 0
       - *optim-jvm-peephole* :
         Enable JVM peephole optimization
         default: 0
       - *optim-loop-inlining?* :
         Loop inlining optimization
         default: #t
       - *optim-nums?* :
         Optimize double fix/flo predicates
         default: #f
       - *optim-peephole?* :
         Enable peephole optimization for global variables
         default: #f
       - *optim-prebox?* :
         Optimize box/unbox operations
         default: #f
       - *optim-reduce-beta?* :
         Enable simple beta reduction
         default: #f
       - *optim-return-goto?* :
         Optimize set-exit by enabling local return
         default: #f
       - *optim-return?* :
         Optimize set-exit used as return
         default: #f
       - *optim-specialize-flonum?* :
         Optimize specialize flonum operations
         default: #f
       - *optim-stackable?* :
         Optimize stackable allocation
         default: #f
       - *optim-symbol-case* :
         Optimize case forms descrimining on symbols only
         default: #f
       - *optim-sync-failsafe?* :
         Enable failsafe synchronize optimization
         default: #f
       - *optim-tagged-fxop?* :
         Optimize tagged fixnum operations
         default: #f
       - *optim-uncell?* :
         Remove useless cells
         default: #f
       - *optim-unroll-loop?* :
         Loop unrolling optimization
         default: #unspecified
       - *optim-unsafe-cell?* :
         Use unsafe cell for shared captured variables
         default: #f
       - *pass* :
         Stop after the pass
         default: ld
       - *pre-processor* :
         An optional function that pre-processes the source file
         default: #<procedure:559874b54c50.1>
       - *prof-table-name* :
         Bprof translation table file name
         default: "bmon.out"
       - *profile-library* :
         Use the profiled library version
         default: #f
       - *profile-mode* :
         Bigloo profile mode
         default: 0
       - *purify* :
         Produce byte code verifier compliant JVM code
         default: #t
       - *qualified-type-file* :
         The qualifed-type association file name
         default: #f
       - *qualified-type-file-default* :
         The qualifed-type association file name
         default: ".jfile"
       - *reader* :
         The way the reader reads input file ('plain or 'intern)
         default: plain
       - *rm-tmp-files* :
         Shall the .c and .il produced files be removed?
         default: #t
       - *saw* :
         Do we go to the saw-mill?
         default: #f
       - *saw-bbv-functions* :
         Optional white list of bbv functions
         default: ()
       - *saw-bbv?* :
         Enable/disable saw basic-blocks versionning
         default: #f
       - *saw-no-register-allocation-functions* :
         The list of functions disabling register allocation
         default: ()
       - *saw-register-allocation* :
         Enable/disable saw register allocation
         default: #f
       - *saw-register-allocation-functions* :
         The list of functions allowing register allocation
         default: ()
       - *saw-register-allocation-max-size* :
         Max function size for optimizing the register allocation
         default: 4000
       - *saw-register-allocation-onexpression?* :
         Enable/disable saw register allocation on expression
         default: #f
       - *saw-register-reallocation?* :
         Enable/disable saw register re-allocation
         default: #f
       - *saw-spill* :
         Enable saw spill optimization
         default: #f
       - *shared-cnst?* :
         Shared constant compilation?
         default: #t
       - *shell* :
         The shell to exec C compilations
         default: "/bin/sh"
       - *src-files* :
         The sources files
         default: ()
       - *src-suffix* :
         Scheme legal suffixes
         default: ("scm" "bgl")
       - *startup-file* :
         A startup file for the interpreter
         default: #f
       - *static-all-bigloo?* :
         Do we use the static version of all Bigloo libraries?
         default: #f
       - *static-bigloo?* :
         Do we use the static Bigloo library
         default: #f
       - *stdc* :
         Shall we produce ISO C?
         default: #t
       - *strip* :
         Shall we strip the executable?
         default: #t
       - *sync-profiling* :
         Instrument code for synchronize profiling
         default: #f
       - *target-language* :
         The target language (either c, c-saw, jvm, or .net)
         default: native
       - *trace-level* :
         Trace level
         default: 0
       - *trace-name* :
         Trace file name
         default: "trace"
       - *trace-write-length* :
         Trace dumping max level
         default: 80
       - *unsafe-arity* :
         Runtime type arity safety
         default: #f
       - *unsafe-eval* :
         Disable type checking for eval functions
         default: #f
       - *unsafe-heap* :
         Disable heap version checking
         default: #f
       - *unsafe-library* :
         Use the unsafe library version
         default: #f
       - *unsafe-range* :
         Runtime range safety
         default: #f
       - *unsafe-struct* :
         Runtime struct range safety
         default: #f
       - *unsafe-type* :
         Runtime type safety
         default: #f
       - *unsafe-version* :
         Module version safety
         default: #f
       - *user-heap-size* :
         Heap size (in MegaByte) or #f for default value
         default: 0
       - *user-inlining?* :
         User inlining optimization
         default: #t
       - *user-pass* :
         The user specific compilation pass
         default: #unspecified
       - *verbose* :
         The verbosity level
         default: 0
       - *warning-default-slot-value* :
         Set to #t to warn about non-inlinable default slot values
         default: #f
       - *warning-overriden-slots* :
         Set to #t to warn about virtual slot overriding
         default: #t
       - *warning-overriden-variables* :
         Set to #t to warn about variable overriding
         default: #f
       - *warning-type-error* :
         Set to #t to treat type warnigns as error
         default: #f
       - *warning-types* :
         Set to #t to warn about type checks
         default: #f
       - *with-files* :
         The additional modules
         default: ()

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