ref: e59ffed426f628794d4669f152eff9a6239b99db
dir: /man/1/limbo/
.TH LIMBO 1E .SH NAME limbo \- Limbo compiler .SH SYNOPSIS .EX limbo [ \f2option ...\fP ] [ \f2file ...\fP ] .EE .SH DESCRIPTION .B Limbo compiles the named Limbo .I files into machine-independent object files for the Dis virtual machine. Depending on the options, the compiler may create output files or write information to its standard output. Conventional files and their extensions include the following. .TP 10 .IB file .b Limbo source file. .TP .IB file .dis Object code for the Dis virtual machine. .TP .IB file .m Limbo source file for .B module declarations. .TP .IB file .s Assembly code. .TP .IB file .sbl Symbolic debugging information. .PP With no options, .B limbo produces a .B \&.dis file for each source file. .PP The compiler options are: .TP 1i .B -a Print on standard output type definitions and call frames useful for writing C language implementations of Limbo modules. Suppresses normal output file generation. .TP .B -C Mark the Dis object file to prevent run-time compilation. .TP .B -c Mark the Dis object file to guarantee run-time compilation. .TP .BI -D " flags" Turn on debugging .IR flags . Flags include .B A for arrays, .B a for .B alt statements, .B b for booleans, .B C for .B case body statements, .B c for .B case statements, .B D for use descriptors, .B d for declarations, .B e for expressions, .B E for extended expressions, .B F for function information, .B f for constant folding, .B m for modules, .B n for .B nil references, .B P for program counter manipulations, .B r for reference types, .B S for type signatures, .B s for a code generation summary, .B T for tuples, .B t for type checking, and .B v for variable initialization. .TP .B -e Increase the number of errors the compiler will report before exiting. .TP .B -G Annotate assembly language output with debugging information. A no-op unless .B -S is set. .TP .B -g Generate debugging information for the input files and place it in a file named by stripping any trailing .B \&.b from the input file name and appending .BR .sbl . .TP .B -i Disable inlining of functions. Currently functions containing a single return statement or two return statements and an if clause are candidates for inlining. .TP .BI \-I " dir" An .B include file whose name does not begin with slash is sought first relative to the working directory, regardless of the source .I file argument. If this fails, .B limbo sequences through directories named in .B \-I options, then searches in .BR /module . An .B include file contains Limbo source code, normally holding one or more .B module declarations. .TP .BI \-o " obj" Place output in file .I obj (allowed only if there is a single input .IR file ). The output file will hold either object or assembly code, depending on .BR \-S . Default is to take the last element of the input file name, strip any trailing .BR .b , and append .B .dis for object code and .B .s for assembly code. Thus, the default output file for .B dir/mod.b would be .BR mod.dis . .TP .B \-S Create assembly language output instead of object code. .TP \f5\-T\fP\ \f2module Print on standard output C stub functions, useful for implementing Limbo modules in the C language for linkage with the interpreter. .TP \f5\-t\fP\ \f2module Print on standard output a table of runtime functions, to link C language implementations of modules with the Limbo interpreter. Suppresses normal output file generation. .TP .B \-w Print warning messages about unused variables, etc. More \f5w\fP's (e.g., \f5\-ww\fP) increase the pedantry of the checking. .PP .SH FILES .TF /module .TP .B /module directory for Limbo .B include modules .SH SOURCE .TF /appl/limbo .TP .B /appl/limbo compiler source in Limbo .TP .B /limbo compiler source in C for host .SH "SEE ALSO" .IR asm (1), .IR emu (1), .IR mk (10.1), .IR intro (2), .IR sys-intro (2), .IR tk (2) .PP ``The Limbo Programming Language'' .br ``Program Development in Inferno'' .br ``A Descent into Limbo'' .br in Volume 2.