/* * MinGW wrapper: makes gcc behave like MinGW. * * Copyright 2000 Manuel Novoa III * Copyright 2000 Francois Gouget * Copyright 2002 Dimitrie O. Paun * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA * * DESCRIPTION * * all options for gcc start with '-' and are for the most part * single options (no parameters as separate argument). * There are of course exceptions to this rule, so here is an * exhaustive list of options that do take parameters (potentially) * as a separate argument: * * Compiler: * -x language * -o filename * -aux-info filename * * Preprocessor: * -D name * -U name * -I dir * -MF file * -MT target * -MQ target * (all -i.* arg) * -include file * -imacros file * -idirafter dir * -iwithprefix dir * -iwithprefixbefore dir * -isystem dir * -A predicate=answer * * Linking: * -l library * -Xlinker option * -u symbol * * Misc: * -b machine * -V version * -G num (see NOTES below) * * NOTES * There is -G option for compatibility with System V that * takes no parameters. This makes "-G num" parsing ambiguous. * This option is synonymous to -shared, and as such we will * not support it for now. * * Special interest options * * Assembler Option * -Wa,option * * Linker Options * object-file-name -llibrary -nostartfiles -nodefaultlibs * -nostdlib -s -static -static-libgcc -shared -shared-libgcc * -symbolic -Wl,option -Xlinker option -u symbol --image-base * * Directory Options * -Bprefix -Idir -I- -Ldir -specs=file * * Target Options * -b machine -V version * * Please note that the Target Options are relevant to everything: * compiler, linker, assembler, preprocessor. * */ #include "config.h" #include "wine/port.h" #include <assert.h> #include <stdio.h> #include <stdlib.h> #include <signal.h> #include <stdarg.h> #include <string.h> #include <errno.h> #include "utils.h" static const char* app_loader_template = "#!/bin/sh\n" "\n" "appname=\"%s\"\n" "# determine the application directory\n" "appdir=''\n" "case \"$0\" in\n" " */*)\n" " # $0 contains a path, use it\n" " appdir=`dirname \"$0\"`\n" " ;;\n" " *)\n" " # no directory in $0, search in PATH\n" " saved_ifs=$IFS\n" " IFS=:\n" " for d in $PATH\n" " do\n" " IFS=$saved_ifs\n" " if [ -x \"$d/$appname\" ]; then appdir=\"$d\"; break; fi\n" " done\n" " ;;\n" "esac\n" "\n" "# figure out the full app path\n" "if [ -n \"$appdir\" ]; then\n" " apppath=\"$appdir/$appname\"\n" " WINEDLLPATH=\"$appdir:$WINEDLLPATH\"\n" " export WINEDLLPATH\n" "else\n" " apppath=\"$appname\"\n" "fi\n" "\n" "# determine the WINELOADER\n" "if [ ! -x \"$WINELOADER\" ]; then WINELOADER=\"wine\"; fi\n" "\n" "# and try to start the app\n" "exec \"$WINELOADER\" \"$apppath\" \"$@\"\n" ; static int keep_generated = 0; static strarray* tmp_files; #ifdef HAVE_SIGSET_T static sigset_t signal_mask; #endif enum processor { proc_cc, proc_cxx, proc_cpp, proc_as }; static const struct { const char *name; enum target_cpu cpu; } cpu_names[] = { { "i386", CPU_x86 }, { "i486", CPU_x86 }, { "i586", CPU_x86 }, { "i686", CPU_x86 }, { "i786", CPU_x86 }, { "amd64", CPU_x86_64 }, { "x86_64", CPU_x86_64 }, { "powerpc", CPU_POWERPC }, { "arm", CPU_ARM }, { "aarch64", CPU_ARM64 } }; static const struct { const char *name; enum target_platform platform; } platform_names[] = { { "macos", PLATFORM_APPLE }, { "darwin", PLATFORM_APPLE }, { "solaris", PLATFORM_SOLARIS }, { "cygwin", PLATFORM_CYGWIN }, { "mingw32", PLATFORM_WINDOWS }, { "windows", PLATFORM_WINDOWS }, { "winnt", PLATFORM_WINDOWS } }; struct options { enum processor processor; enum target_cpu target_cpu; enum target_platform target_platform; const char *target; const char *version; int shared; int use_msvcrt; int nostdinc; int nostdlib; int nostartfiles; int nodefaultlibs; int noshortwchar; int gui_app; int unicode_app; int win16_app; int compile_only; int force_pointer_size; int large_address_aware; int unwind_tables; int strip; const char* wine_objdir; const char* output_name; const char* image_base; const char* section_align; const char* lib_suffix; strarray* prefix; strarray* lib_dirs; strarray* linker_args; strarray* compiler_args; strarray* winebuild_args; strarray* files; }; #ifdef __i386__ static const enum target_cpu build_cpu = CPU_x86; #elif defined(__x86_64__) static const enum target_cpu build_cpu = CPU_x86_64; #elif defined(__powerpc__) static const enum target_cpu build_cpu = CPU_POWERPC; #elif defined(__arm__) static const enum target_cpu build_cpu = CPU_ARM; #elif defined(__aarch64__) static const enum target_cpu build_cpu = CPU_ARM64; #else #error Unsupported CPU #endif #ifdef __APPLE__ static enum target_platform build_platform = PLATFORM_APPLE; #elif defined(__sun) static enum target_platform build_platform = PLATFORM_SOLARIS; #elif defined(__CYGWIN__) static enum target_platform build_platform = PLATFORM_CYGWIN; #elif defined(_WIN32) static enum target_platform build_platform = PLATFORM_WINDOWS; #else static enum target_platform build_platform = PLATFORM_UNSPECIFIED; #endif static void clean_temp_files(void) { unsigned int i; if (keep_generated) return; for (i = 0; i < tmp_files->size; i++) unlink(tmp_files->base[i]); } /* clean things up when aborting on a signal */ static void exit_on_signal( int sig ) { exit(1); /* this will call the atexit functions */ } static char* get_temp_file(const char* prefix, const char* suffix) { int fd; char* tmp = strmake("%s-XXXXXX%s", prefix, suffix); #ifdef HAVE_SIGPROCMASK sigset_t old_set; /* block signals while manipulating the temp files list */ sigprocmask( SIG_BLOCK, &signal_mask, &old_set ); #endif fd = mkstemps( tmp, strlen(suffix) ); if (fd == -1) { /* could not create it in current directory, try in TMPDIR */ const char* tmpdir; free(tmp); if (!(tmpdir = getenv("TMPDIR"))) tmpdir = "/tmp"; tmp = strmake("%s/%s-XXXXXX%s", tmpdir, prefix, suffix); fd = mkstemps( tmp, strlen(suffix) ); if (fd == -1) error( "could not create temp file\n" ); } close( fd ); strarray_add(tmp_files, tmp); #ifdef HAVE_SIGPROCMASK sigprocmask( SIG_SETMASK, &old_set, NULL ); #endif return tmp; } static char* build_tool_name(struct options *opts, const char* base, const char* deflt) { char* str; if (opts->target && opts->version) { str = strmake("%s-%s-%s", opts->target, base, opts->version); } else if (opts->target) { str = strmake("%s-%s", opts->target, base); } else if (opts->version) { str = strmake("%s-%s", base, opts->version); } else str = xstrdup(deflt); return str; } static const strarray* get_translator(struct options *opts) { char *str = NULL; strarray *ret; switch(opts->processor) { case proc_cpp: str = build_tool_name(opts, "cpp", CPP); break; case proc_cc: case proc_as: str = build_tool_name(opts, "gcc", CC); break; case proc_cxx: str = build_tool_name(opts, "g++", CXX); break; default: assert(0); } ret = strarray_fromstring( str, " " ); free(str); if (opts->force_pointer_size) strarray_add( ret, strmake("-m%u", 8 * opts->force_pointer_size )); return ret; } static int try_link( const strarray *prefix, const strarray *link_tool, const char *cflags ) { const char *in = get_temp_file( "try_link", ".c" ); const char *out = get_temp_file( "try_link", ".out" ); const char *err = get_temp_file( "try_link", ".err" ); strarray *link = strarray_dup( link_tool ); int sout = -1, serr = -1; int ret; create_file( in, 0644, "int main(void){return 1;}\n" ); strarray_add( link, "-o" ); strarray_add( link, out ); strarray_addall( link, strarray_fromstring( cflags, " " ) ); strarray_add( link, in ); sout = dup( fileno(stdout) ); freopen( err, "w", stdout ); serr = dup( fileno(stderr) ); freopen( err, "w", stderr ); ret = spawn( prefix, link, 1 ); if (sout >= 0) { dup2( sout, fileno(stdout) ); close( sout ); } if (serr >= 0) { dup2( serr, fileno(stderr) ); close( serr ); } strarray_free( link ); return ret; } static const strarray* get_lddllflags( const struct options *opts, const strarray *link_tool ) { strarray *flags = strarray_alloc(); switch (opts->target_platform) { case PLATFORM_APPLE: strarray_add( flags, "-bundle" ); strarray_add( flags, "-multiply_defined" ); strarray_add( flags, "suppress" ); if (opts->target_cpu == CPU_POWERPC) { strarray_add( flags, "-read_only_relocs" ); strarray_add( flags, "warning" ); } break; case PLATFORM_SOLARIS: case PLATFORM_UNSPECIFIED: strarray_add( flags, "-shared" ); strarray_add( flags, "-Wl,-Bsymbolic" ); /* Try all options first - this is likely to succeed on modern compilers */ if (!try_link( opts->prefix, link_tool, "-fPIC -shared -Wl,-Bsymbolic " "-Wl,-z,defs -Wl,-init,__wine_spec_init,-fini,_wine_spec_fini" )) { strarray_add( flags, "-Wl,-z,defs" ); strarray_add( flags, "-Wl,-init,__wine_spec_init,-fini,__wine_spec_fini" ); } else /* otherwise figure out which ones are allowed */ { if (!try_link( opts->prefix, link_tool, "-fPIC -shared -Wl,-Bsymbolic -Wl,-z,defs" )) strarray_add( flags, "-Wl,-z,defs" ); if (!try_link( opts->prefix, link_tool, "-fPIC -shared -Wl,-Bsymbolic " "-Wl,-init,__wine_spec_init,-fini,_wine_spec_fini" )) strarray_add( flags, "-Wl,-init,__wine_spec_init,-fini,__wine_spec_fini" ); } break; default: assert(0); } return flags; } /* check that file is a library for the correct platform */ static int check_platform( struct options *opts, const char *file ) { int ret = 0, fd = open( file, O_RDONLY ); if (fd != -1) { unsigned char header[16]; if (read( fd, header, sizeof(header) ) == sizeof(header)) { /* FIXME: only ELF is supported, platform is not checked beyond 32/64 */ if (!memcmp( header, "\177ELF", 4 )) { if (header[4] == 2) /* 64-bit */ ret = (opts->target_cpu == CPU_x86_64 || opts->target_cpu == CPU_ARM64); else ret = (opts->target_cpu != CPU_x86_64 && opts->target_cpu != CPU_ARM64); } } close( fd ); } return ret; } static char *get_lib_dir( struct options *opts ) { static const char *stdlibpath[] = { LIBDIR, "/usr/lib", "/usr/local/lib", "/lib" }; static const char libwine[] = "/libwine.so"; unsigned int i; for (i = 0; i < sizeof(stdlibpath)/sizeof(stdlibpath[0]); i++) { char *p, *buffer = xmalloc( strlen(stdlibpath[i]) + strlen("/arm-linux-gnueabi") + strlen(libwine) + 1 ); strcpy( buffer, stdlibpath[i] ); p = buffer + strlen(buffer); while (p > buffer && p[-1] == '/') p--; strcpy( p, libwine ); if (check_platform( opts, buffer )) goto found; if (p > buffer + 2 && (!memcmp( p - 2, "32", 2 ) || !memcmp( p - 2, "64", 2 ))) p -= 2; if (opts->target_cpu != CPU_x86_64 && opts->target_cpu != CPU_ARM64) { strcpy( p, "32" ); strcat( p, libwine ); if (check_platform( opts, buffer )) goto found; } if (opts->target_cpu == CPU_x86_64 || opts->target_cpu == CPU_ARM64) { strcpy( p, "64" ); strcat( p, libwine ); if (check_platform( opts, buffer )) goto found; } switch(opts->target_cpu) { case CPU_x86: strcpy( p, "/i386-linux-gnu" ); break; case CPU_x86_64: strcpy( p, "/x86_64-linux-gnu" ); break; case CPU_ARM: strcpy( p, "/arm-linux-gnueabi" ); break; case CPU_ARM64: strcpy( p, "/aarch64-linux-gnu" ); break; case CPU_POWERPC: strcpy( p, "/powerpc-linux-gnu" ); break; default: assert(0); } strcat( p, libwine ); if (check_platform( opts, buffer )) goto found; free( buffer ); continue; found: buffer[strlen(buffer) - strlen(libwine)] = 0; return buffer; } return xstrdup( LIBDIR ); } static void compile(struct options* opts, const char* lang) { strarray* comp_args = strarray_alloc(); unsigned int i, j; int gcc_defs = 0; strarray* gcc; strarray* gpp; strarray_addall(comp_args, get_translator(opts)); switch(opts->processor) { case proc_cpp: gcc_defs = 1; break; case proc_as: gcc_defs = 0; break; /* Note: if the C compiler is gcc we assume the C++ compiler is too */ /* mixing different C and C++ compilers isn't supported in configure anyway */ case proc_cc: case proc_cxx: gcc = strarray_fromstring(build_tool_name(opts, "gcc", CC), " "); gpp = strarray_fromstring(build_tool_name(opts, "g++", CXX), " "); for ( j = 0; !gcc_defs && j < comp_args->size; j++ ) { const char *cc = comp_args->base[j]; for (i = 0; !gcc_defs && i < gcc->size; i++) gcc_defs = gcc->base[i][0] != '-' && strendswith(cc, gcc->base[i]); for (i = 0; !gcc_defs && i < gpp->size; i++) gcc_defs = gpp->base[i][0] != '-' && strendswith(cc, gpp->base[i]); } strarray_free(gcc); strarray_free(gpp); break; } if (opts->target_platform == PLATFORM_WINDOWS || opts->target_platform == PLATFORM_CYGWIN) goto no_compat_defines; if (opts->processor != proc_cpp) { if (gcc_defs && !opts->wine_objdir && !opts->noshortwchar) { strarray_add(comp_args, "-fshort-wchar"); strarray_add(comp_args, "-DWINE_UNICODE_NATIVE"); } strarray_add(comp_args, "-D_REENTRANT"); strarray_add(comp_args, "-fPIC"); } if (opts->target_cpu == CPU_x86_64 || opts->target_cpu == CPU_ARM64) { strarray_add(comp_args, "-DWIN64"); strarray_add(comp_args, "-D_WIN64"); strarray_add(comp_args, "-D__WIN64"); strarray_add(comp_args, "-D__WIN64__"); } strarray_add(comp_args, "-DWIN32"); strarray_add(comp_args, "-D_WIN32"); strarray_add(comp_args, "-D__WIN32"); strarray_add(comp_args, "-D__WIN32__"); strarray_add(comp_args, "-D__WINNT"); strarray_add(comp_args, "-D__WINNT__"); if (gcc_defs) { int fastcall_done = 0; if (opts->target_cpu == CPU_x86_64) { strarray_add(comp_args, "-D__stdcall=__attribute__((ms_abi))"); strarray_add(comp_args, "-D__cdecl=__attribute__((ms_abi))"); strarray_add(comp_args, "-D_stdcall=__attribute__((ms_abi))"); strarray_add(comp_args, "-D_cdecl=__attribute__((ms_abi))"); strarray_add(comp_args, "-D__fastcall=__attribute__((ms_abi))"); strarray_add(comp_args, "-D_fastcall=__attribute__((ms_abi))"); fastcall_done = 1; } else if (opts->target_platform == PLATFORM_APPLE) { /* Mac OS X uses a 16-byte aligned stack and not a 4-byte one */ strarray_add(comp_args, "-D__stdcall=__attribute__((__stdcall__)) __attribute__((__force_align_arg_pointer__))"); strarray_add(comp_args, "-D__cdecl=__attribute__((__cdecl__)) __attribute__((__force_align_arg_pointer__))"); strarray_add(comp_args, "-D_stdcall=__attribute__((__stdcall__)) __attribute__((__force_align_arg_pointer__))"); strarray_add(comp_args, "-D_cdecl=__attribute__((__cdecl__)) __attribute__((__force_align_arg_pointer__))"); } else if (opts->target_cpu == CPU_ARM || opts->target_cpu == CPU_ARM64) { strarray_add(comp_args, "-D__stdcall="); strarray_add(comp_args, "-D__cdecl="); strarray_add(comp_args, "-D_stdcall="); strarray_add(comp_args, "-D_cdecl="); strarray_add(comp_args, "-D__fastcall="); strarray_add(comp_args, "-D_fastcall="); fastcall_done = 1; } else { strarray_add(comp_args, "-D__stdcall=__attribute__((__stdcall__))"); strarray_add(comp_args, "-D__cdecl=__attribute__((__cdecl__))"); strarray_add(comp_args, "-D_stdcall=__attribute__((__stdcall__))"); strarray_add(comp_args, "-D_cdecl=__attribute__((__cdecl__))"); } if (!fastcall_done) { strarray_add(comp_args, "-D__fastcall=__attribute__((__fastcall__))"); strarray_add(comp_args, "-D_fastcall=__attribute__((__fastcall__))"); } strarray_add(comp_args, "-D__declspec(x)=__declspec_##x"); strarray_add(comp_args, "-D__declspec_align(x)=__attribute__((aligned(x)))"); strarray_add(comp_args, "-D__declspec_allocate(x)=__attribute__((section(x)))"); strarray_add(comp_args, "-D__declspec_deprecated=__attribute__((deprecated))"); strarray_add(comp_args, "-D__declspec_dllimport=__attribute__((dllimport))"); strarray_add(comp_args, "-D__declspec_dllexport=__attribute__((dllexport))"); strarray_add(comp_args, "-D__declspec_naked=__attribute__((naked))"); strarray_add(comp_args, "-D__declspec_noinline=__attribute__((noinline))"); strarray_add(comp_args, "-D__declspec_noreturn=__attribute__((noreturn))"); strarray_add(comp_args, "-D__declspec_nothrow=__attribute__((nothrow))"); strarray_add(comp_args, "-D__declspec_novtable=__attribute__(())"); /* ignore it */ strarray_add(comp_args, "-D__declspec_selectany=__attribute__((weak))"); strarray_add(comp_args, "-D__declspec_thread=__thread"); } strarray_add(comp_args, "-D__int8=char"); strarray_add(comp_args, "-D__int16=short"); strarray_add(comp_args, "-D__int32=int"); if (opts->target_cpu == CPU_x86_64 || opts->target_cpu == CPU_ARM64) strarray_add(comp_args, "-D__int64=long"); else strarray_add(comp_args, "-D__int64=long long"); no_compat_defines: strarray_add(comp_args, "-D__WINE__"); /* options we handle explicitly */ if (opts->compile_only) strarray_add(comp_args, "-c"); if (opts->output_name) { strarray_add(comp_args, "-o"); strarray_add(comp_args, opts->output_name); } /* the rest of the pass-through parameters */ for ( j = 0 ; j < opts->compiler_args->size ; j++ ) strarray_add(comp_args, opts->compiler_args->base[j]); /* the language option, if any */ if (lang && strcmp(lang, "-xnone")) strarray_add(comp_args, lang); /* last, but not least, the files */ for ( j = 0; j < opts->files->size; j++ ) { if (opts->files->base[j][0] != '-') strarray_add(comp_args, opts->files->base[j]); } /* standard includes come last in the include search path */ if (!opts->wine_objdir && !opts->nostdinc) { if (opts->use_msvcrt) { strarray_add(comp_args, gcc_defs ? "-isystem" INCLUDEDIR "/msvcrt" : "-I" INCLUDEDIR "/msvcrt" ); strarray_add(comp_args, "-D__MSVCRT__"); } strarray_add(comp_args, gcc_defs ? "-isystem" INCLUDEDIR "/windows" : "-I" INCLUDEDIR "/windows" ); } else if (opts->wine_objdir) strarray_add(comp_args, strmake("-I%s/include", opts->wine_objdir) ); spawn(opts->prefix, comp_args, 0); strarray_free(comp_args); } static const char* compile_to_object(struct options* opts, const char* file, const char* lang) { struct options copts; char* base_name; /* make a copy so we don't change any of the initial stuff */ /* a shallow copy is exactly what we want in this case */ base_name = get_basename(file); copts = *opts; copts.output_name = get_temp_file(base_name, ".o"); copts.compile_only = 1; copts.files = strarray_alloc(); strarray_add(copts.files, file); compile(&copts, lang); strarray_free(copts.files); free(base_name); return copts.output_name; } /* return the initial set of options needed to run winebuild */ static strarray *get_winebuild_args(struct options *opts) { const char* winebuild = getenv("WINEBUILD"); strarray *spec_args = strarray_alloc(); if (!winebuild) winebuild = "winebuild"; strarray_add( spec_args, winebuild ); if (verbose) strarray_add( spec_args, "-v" ); if (keep_generated) strarray_add( spec_args, "--save-temps" ); if (opts->target) { strarray_add( spec_args, "--target" ); strarray_add( spec_args, opts->target ); } if (opts->unwind_tables) strarray_add( spec_args, "-fasynchronous-unwind-tables" ); else strarray_add( spec_args, "-fno-asynchronous-unwind-tables" ); return spec_args; } static const char* compile_resources_to_object(struct options* opts, const strarray *resources, const char *res_o_name) { strarray *winebuild_args = get_winebuild_args( opts ); strarray_add( winebuild_args, "--resources" ); strarray_add( winebuild_args, "-o" ); strarray_add( winebuild_args, res_o_name ); strarray_addall( winebuild_args, resources ); spawn( opts->prefix, winebuild_args, 0 ); strarray_free( winebuild_args ); return res_o_name; } /* check if there is a static lib associated to a given dll */ static char *find_static_lib( const char *dll ) { char *lib = strmake("%s.a", dll); if (get_file_type(lib) == file_arh) return lib; free( lib ); return NULL; } /* add specified library to the list of files */ static void add_library( struct options *opts, strarray *lib_dirs, strarray *files, const char *library ) { char *static_lib, *fullname = 0; switch(get_lib_type(opts->target_platform, lib_dirs, library, opts->lib_suffix, &fullname)) { case file_arh: strarray_add(files, strmake("-a%s", fullname)); break; case file_dll: strarray_add(files, strmake("-d%s", fullname)); if ((static_lib = find_static_lib(fullname))) { strarray_add(files, strmake("-a%s",static_lib)); free(static_lib); } break; case file_so: default: /* keep it anyway, the linker may know what to do with it */ strarray_add(files, strmake("-l%s", library)); break; } free(fullname); } /* hack a main or WinMain function to work around Mingw's lack of Unicode support */ static const char *mingw_unicode_hack( struct options *opts ) { char *main_stub = get_temp_file( opts->output_name, ".c" ); create_file( main_stub, 0644, "typedef unsigned short wchar_t;\n" "extern void * __stdcall LoadLibraryA(const char *);\n" "extern void * __stdcall GetProcAddress(void *,const char *);\n" "extern int wmain( int argc, wchar_t *argv[] );\n\n" "int main( int argc, char *argv[] )\n{\n" " int wargc;\n" " wchar_t **wargv, **wenv;\n" " void *msvcrt = LoadLibraryA( \"msvcrt.dll\" );\n" " void (*__wgetmainargs)(int *argc, wchar_t** *wargv, wchar_t** *wenvp, int expand_wildcards,\n" " int *new_mode) = GetProcAddress( msvcrt, \"__wgetmainargs\" );\n" " __wgetmainargs( &wargc, &wargv, &wenv, 0, 0 );\n" " return wmain( wargc, wargv );\n}\n" ); return compile_to_object( opts, main_stub, NULL ); } static void build(struct options* opts) { strarray *lib_dirs, *files; strarray *spec_args, *link_args; char *output_file; const char *spec_o_name; const char *output_name, *spec_file, *lang; int generate_app_loader = 1; int fake_module = 0; unsigned int j; /* NOTE: for the files array we'll use the following convention: * -axxx: xxx is an archive (.a) * -dxxx: xxx is a DLL (.def) * -lxxx: xxx is an unsorted library * -oxxx: xxx is an object (.o) * -rxxx: xxx is a resource (.res) * -sxxx: xxx is a shared lib (.so) * -xlll: lll is the language (c, c++, etc.) */ output_file = strdup( opts->output_name ? opts->output_name : "a.out" ); /* 'winegcc -o app xxx.exe.so' only creates the load script */ if (opts->files->size == 1 && strendswith(opts->files->base[0], ".exe.so")) { create_file(output_file, 0755, app_loader_template, opts->files->base[0]); return; } /* generate app loader only for .exe */ if (opts->shared || strendswith(output_file, ".so")) generate_app_loader = 0; if (strendswith(output_file, ".fake")) fake_module = 1; /* normalize the filename a bit: strip .so, ensure it has proper ext */ if (strendswith(output_file, ".so")) output_file[strlen(output_file) - 3] = 0; if ((output_name = strrchr(output_file, '/'))) output_name++; else output_name = output_file; if (!strchr(output_name, '.')) output_file = strmake("%s.%s", output_file, opts->shared ? "dll" : "exe"); /* get the filename from the path */ if ((output_name = strrchr(output_file, '/'))) output_name++; else output_name = output_file; /* prepare the linking path */ if (!opts->wine_objdir) { char *lib_dir = get_lib_dir( opts ); lib_dirs = strarray_dup(opts->lib_dirs); strarray_add( lib_dirs, strmake( "%s/wine", lib_dir )); strarray_add( lib_dirs, lib_dir ); } else { lib_dirs = strarray_alloc(); strarray_add(lib_dirs, strmake("%s/dlls", opts->wine_objdir)); strarray_add(lib_dirs, strmake("%s/libs/wine", opts->wine_objdir)); strarray_addall(lib_dirs, opts->lib_dirs); } /* mark the files with their appropriate type */ spec_file = lang = 0; files = strarray_alloc(); link_args = strarray_alloc(); for ( j = 0; j < opts->files->size; j++ ) { const char* file = opts->files->base[j]; if (file[0] != '-') { switch(get_file_type(file)) { case file_def: case file_spec: if (spec_file) error("Only one spec file can be specified\n"); spec_file = file; break; case file_rc: /* FIXME: invoke wrc to build it */ error("Can't compile .rc file at the moment: %s\n", file); break; case file_res: strarray_add(files, strmake("-r%s", file)); break; case file_obj: strarray_add(files, strmake("-o%s", file)); break; case file_arh: strarray_add(files, strmake("-a%s", file)); break; case file_so: strarray_add(files, strmake("-s%s", file)); break; case file_na: error("File does not exist: %s\n", file); break; default: file = compile_to_object(opts, file, lang); strarray_add(files, strmake("-o%s", file)); break; } } else if (file[1] == 'l') add_library(opts, lib_dirs, files, file + 2 ); else if (file[1] == 'x') lang = file; } /* building for Windows is completely different */ if (opts->target_platform == PLATFORM_WINDOWS || opts->target_platform == PLATFORM_CYGWIN) { strarray *resources = strarray_alloc(); char *res_o_name = NULL; if (opts->win16_app) error( "Building 16-bit code is not supported for Windows\n" ); strarray_addall(link_args, get_translator(opts)); if (opts->shared) { /* run winebuild to generate the .def file */ char *spec_def_name = get_temp_file(output_name, ".spec.def"); spec_args = get_winebuild_args( opts ); strarray_add(spec_args, "--def"); strarray_add(spec_args, "-o"); strarray_add(spec_args, spec_def_name); if (spec_file) { strarray_add(spec_args, "--export"); strarray_add(spec_args, spec_file); } spawn(opts->prefix, spec_args, 0); strarray_free(spec_args); strarray_add(link_args, "-shared"); if (verbose) strarray_add(link_args, "-v"); strarray_add(link_args, "-Wl,--kill-at"); strarray_add(link_args, spec_def_name); } else { strarray_add(link_args, opts->gui_app ? "-mwindows" : "-mconsole"); if (opts->nodefaultlibs) strarray_add(link_args, "-nodefaultlibs"); } for ( j = 0 ; j < opts->linker_args->size ; j++ ) strarray_add(link_args, opts->linker_args->base[j]); strarray_add(link_args, "-o"); strarray_add(link_args, output_file); if (opts->image_base) strarray_add(link_args, strmake("-Wl,--image-base,%s", opts->image_base)); if (opts->large_address_aware && opts->target_cpu == CPU_x86) strarray_add( link_args, "-Wl,--large-address-aware" ); if (opts->unicode_app && !opts->shared) strarray_add(link_args, mingw_unicode_hack(opts)); for ( j = 0; j < lib_dirs->size; j++ ) strarray_add(link_args, strmake("-L%s", lib_dirs->base[j])); if (!opts->nodefaultlibs) { add_library(opts, lib_dirs, files, "winecrt0"); add_library(opts, lib_dirs, files, "kernel32"); add_library(opts, lib_dirs, files, "ntdll"); } if (!opts->shared && opts->use_msvcrt && opts->target_platform == PLATFORM_CYGWIN) add_library(opts, lib_dirs, files, "msvcrt"); for ( j = 0; j < files->size; j++ ) { const char* name = files->base[j] + 2; switch(files->base[j][1]) { case 'l': case 'd': strarray_add(link_args, strmake("-l%s", name)); break; case 's': case 'o': strarray_add(link_args, name); break; case 'a': if (strchr(name, '/')) { /* turn the path back into -Ldir -lfoo options * this makes sure that we use the specified libs even * when mingw adds its own import libs to the link */ char *lib = xstrdup( name ); char *p = strrchr( lib, '/' ); *p++ = 0; if (!strncmp( p, "lib", 3 )) { char *ext = strrchr( p, '.' ); if (ext) *ext = 0; p += 3; strarray_add(link_args, strmake("-L%s", lib )); strarray_add(link_args, strmake("-l%s", p )); free( lib ); break; } free( lib ); } strarray_add(link_args, name); break; case 'r': if (!res_o_name) { res_o_name = get_temp_file( output_name, ".res.o" ); strarray_add( link_args, res_o_name ); } strarray_add( resources, name ); break; } } if (res_o_name) compile_resources_to_object( opts, resources, res_o_name ); spawn(opts->prefix, link_args, 0); strarray_free (resources); strarray_free (link_args); strarray_free (lib_dirs); strarray_free (files); return; } /* add the default libraries, if needed */ if (!opts->nostdlib && opts->use_msvcrt) add_library(opts, lib_dirs, files, "msvcrt"); if (!opts->wine_objdir && !opts->nodefaultlibs) { if (opts->gui_app) { add_library(opts, lib_dirs, files, "shell32"); add_library(opts, lib_dirs, files, "comdlg32"); add_library(opts, lib_dirs, files, "gdi32"); } add_library(opts, lib_dirs, files, "advapi32"); add_library(opts, lib_dirs, files, "user32"); } if (!opts->nodefaultlibs) { add_library(opts, lib_dirs, files, "winecrt0"); if (opts->win16_app) add_library(opts, lib_dirs, files, "kernel"); add_library(opts, lib_dirs, files, "kernel32"); add_library(opts, lib_dirs, files, "ntdll"); } if (!opts->nostdlib) add_library(opts, lib_dirs, files, "wine"); /* run winebuild to generate the .spec.o file */ spec_args = get_winebuild_args( opts ); strarray_add( spec_args, strmake( "--cc-cmd=%s", build_tool_name( opts, "gcc", CC ))); strarray_add( spec_args, strmake( "--ld-cmd=%s", build_tool_name( opts, "ld", LD ))); spec_o_name = get_temp_file(output_name, ".spec.o"); if (opts->force_pointer_size) strarray_add(spec_args, strmake("-m%u", 8 * opts->force_pointer_size )); strarray_add(spec_args, "-D_REENTRANT"); strarray_add(spec_args, "-fPIC"); strarray_add(spec_args, opts->shared ? "--dll" : "--exe"); if (fake_module) { strarray_add(spec_args, "--fake-module"); strarray_add(spec_args, "-o"); strarray_add(spec_args, output_file); } else { strarray_add(spec_args, "-o"); strarray_add(spec_args, spec_o_name); } if (spec_file) { strarray_add(spec_args, "-E"); strarray_add(spec_args, spec_file); } if (opts->win16_app) strarray_add(spec_args, "-m16"); if (!opts->shared) { strarray_add(spec_args, "-F"); strarray_add(spec_args, output_name); strarray_add(spec_args, "--subsystem"); strarray_add(spec_args, opts->gui_app ? "windows" : "console"); if (opts->unicode_app) { strarray_add(spec_args, "--entry"); strarray_add(spec_args, "__wine_spec_exe_wentry"); } if (opts->large_address_aware) strarray_add( spec_args, "--large-address-aware" ); } for ( j = 0; j < lib_dirs->size; j++ ) strarray_add(spec_args, strmake("-L%s", lib_dirs->base[j])); for ( j = 0 ; j < opts->winebuild_args->size ; j++ ) strarray_add(spec_args, opts->winebuild_args->base[j]); /* add resource files */ for ( j = 0; j < files->size; j++ ) if (files->base[j][1] == 'r') strarray_add(spec_args, files->base[j]); /* add other files */ strarray_add(spec_args, "--"); for ( j = 0; j < files->size; j++ ) { switch(files->base[j][1]) { case 'd': case 'a': case 'o': strarray_add(spec_args, files->base[j] + 2); break; } } spawn(opts->prefix, spec_args, 0); strarray_free (spec_args); if (fake_module) return; /* nothing else to do */ /* link everything together now */ strarray_addall(link_args, get_translator(opts)); strarray_addall(link_args, get_lddllflags(opts, link_args)); strarray_add(link_args, "-o"); strarray_add(link_args, strmake("%s.so", output_file)); for ( j = 0 ; j < opts->linker_args->size ; j++ ) strarray_add(link_args, opts->linker_args->base[j]); switch (opts->target_platform) { case PLATFORM_APPLE: if (opts->image_base) { strarray_add(link_args, "-image_base"); strarray_add(link_args, opts->image_base); } if (opts->strip) strarray_add(link_args, "-Wl,-x"); break; case PLATFORM_SOLARIS: { char *mapfile = get_temp_file( output_name, ".map" ); const char *align = opts->section_align ? opts->section_align : "0x1000"; create_file( mapfile, 0644, "text = A%s;\ndata = A%s;\n", align, align ); strarray_add(link_args, strmake("-Wl,-M,%s", mapfile)); strarray_add(tmp_files, mapfile); } break; default: break; } for ( j = 0; j < lib_dirs->size; j++ ) strarray_add(link_args, strmake("-L%s", lib_dirs->base[j])); strarray_add(link_args, spec_o_name); for ( j = 0; j < files->size; j++ ) { const char* name = files->base[j] + 2; switch(files->base[j][1]) { case 'l': strarray_add(link_args, strmake("-l%s", name)); break; case 's': case 'a': case 'o': strarray_add(link_args, name); break; } } if (!opts->nostdlib) { strarray_add(link_args, "-lm"); strarray_add(link_args, "-lc"); } spawn(opts->prefix, link_args, 0); strarray_free (link_args); /* set the base address */ if (opts->image_base && !opts->target) { const char *prelink = PRELINK; if (prelink[0] && strcmp(prelink,"false")) { strarray *prelink_args = strarray_alloc(); strarray_add(prelink_args, prelink); strarray_add(prelink_args, "--reloc-only"); strarray_add(prelink_args, opts->image_base); strarray_add(prelink_args, strmake("%s.so", output_file)); spawn(opts->prefix, prelink_args, 1); strarray_free(prelink_args); } } /* create the loader script */ if (generate_app_loader) create_file(output_file, 0755, app_loader_template, strmake("%s.so", output_name)); } static void forward(int argc, char **argv, struct options* opts) { strarray* args = strarray_alloc(); int j; strarray_addall(args, get_translator(opts)); for( j = 1; j < argc; j++ ) strarray_add(args, argv[j]); spawn(opts->prefix, args, 0); strarray_free (args); } /* * Linker Options * object-file-name -llibrary -nostartfiles -nodefaultlibs * -nostdlib -s -static -static-libgcc -shared -shared-libgcc * -symbolic -Wl,option -Xlinker option -u symbol * -framework name */ static int is_linker_arg(const char* arg) { static const char* link_switches[] = { "-nostartfiles", "-nostdlib", "-s", "-static", "-static-libgcc", "-shared", "-shared-libgcc", "-symbolic", "-framework", "--coverage", "-fprofile-generate", "-fprofile-use" }; unsigned int j; switch (arg[1]) { case 'R': case 'z': case 'l': case 'u': return 1; case 'W': if (strncmp("-Wl,", arg, 4) == 0) return 1; break; case 'X': if (strcmp("-Xlinker", arg) == 0) return 1; break; case 'a': if (strcmp("-arch", arg) == 0) return 1; break; } for (j = 0; j < sizeof(link_switches)/sizeof(link_switches[0]); j++) if (strcmp(link_switches[j], arg) == 0) return 1; return 0; } /* * Target Options * -b machine -V version */ static int is_target_arg(const char* arg) { return arg[1] == 'b' || arg[1] == 'V'; } /* * Directory Options * -Bprefix -Idir -I- -Ldir -specs=file */ static int is_directory_arg(const char* arg) { return arg[1] == 'B' || arg[1] == 'L' || arg[1] == 'I' || strncmp("-specs=", arg, 7) == 0; } /* * MinGW Options * -mno-cygwin -mwindows -mconsole -mthreads -municode */ static int is_mingw_arg(const char* arg) { static const char* mingw_switches[] = { "-mno-cygwin", "-mwindows", "-mconsole", "-mthreads", "-municode" }; unsigned int j; for (j = 0; j < sizeof(mingw_switches)/sizeof(mingw_switches[0]); j++) if (strcmp(mingw_switches[j], arg) == 0) return 1; return 0; } static void parse_target_option( struct options *opts, const char *target ) { char *p, *platform, *spec = xstrdup( target ); unsigned int i; /* target specification is in the form CPU-MANUFACTURER-OS or CPU-MANUFACTURER-KERNEL-OS */ /* get the CPU part */ if ((p = strchr( spec, '-' ))) { *p++ = 0; for (i = 0; i < sizeof(cpu_names)/sizeof(cpu_names[0]); i++) { if (!strcmp( cpu_names[i].name, spec )) { opts->target_cpu = cpu_names[i].cpu; break; } } if (i == sizeof(cpu_names)/sizeof(cpu_names[0])) error( "Unrecognized CPU '%s'\n", spec ); platform = p; if ((p = strrchr( p, '-' ))) platform = p + 1; } else if (!strcmp( spec, "mingw32" )) { opts->target_cpu = CPU_x86; platform = spec; } else error( "Invalid target specification '%s'\n", target ); /* get the OS part */ opts->target_platform = PLATFORM_UNSPECIFIED; /* default value */ for (i = 0; i < sizeof(platform_names)/sizeof(platform_names[0]); i++) { if (!strncmp( platform_names[i].name, platform, strlen(platform_names[i].name) )) { opts->target_platform = platform_names[i].platform; break; } } free( spec ); opts->target = xstrdup( target ); } int main(int argc, char **argv) { int i, c, next_is_arg = 0, linking = 1; int raw_compiler_arg, raw_linker_arg; const char* option_arg; struct options opts; char* lang = 0; char* str; #ifdef SIGHUP signal( SIGHUP, exit_on_signal ); #endif signal( SIGTERM, exit_on_signal ); signal( SIGINT, exit_on_signal ); #ifdef HAVE_SIGADDSET sigemptyset( &signal_mask ); sigaddset( &signal_mask, SIGHUP ); sigaddset( &signal_mask, SIGTERM ); sigaddset( &signal_mask, SIGINT ); #endif /* setup tmp file removal at exit */ tmp_files = strarray_alloc(); atexit(clean_temp_files); /* initialize options */ memset(&opts, 0, sizeof(opts)); opts.target_cpu = build_cpu; opts.target_platform = build_platform; opts.lib_dirs = strarray_alloc(); opts.files = strarray_alloc(); opts.linker_args = strarray_alloc(); opts.compiler_args = strarray_alloc(); opts.winebuild_args = strarray_alloc(); /* determine the processor type */ if (strendswith(argv[0], "winecpp")) opts.processor = proc_cpp; else if (strendswith(argv[0], "++")) opts.processor = proc_cxx; /* parse options */ for ( i = 1 ; i < argc ; i++ ) { if (argv[i][0] == '-') /* option */ { /* determine if this switch is followed by a separate argument */ next_is_arg = 0; option_arg = 0; switch(argv[i][1]) { case 'x': case 'o': case 'D': case 'U': case 'I': case 'A': case 'l': case 'u': case 'b': case 'V': case 'G': case 'L': case 'B': case 'R': case 'z': if (argv[i][2]) option_arg = &argv[i][2]; else next_is_arg = 1; break; case 'i': next_is_arg = 1; break; case 'a': if (strcmp("-aux-info", argv[i]) == 0) next_is_arg = 1; if (strcmp("-arch", argv[i]) == 0) next_is_arg = 1; break; case 'X': if (strcmp("-Xlinker", argv[i]) == 0) next_is_arg = 1; break; case 'M': c = argv[i][2]; if (c == 'F' || c == 'T' || c == 'Q') { if (argv[i][3]) option_arg = &argv[i][3]; else next_is_arg = 1; } break; case 'f': if (strcmp("-framework", argv[i]) == 0) next_is_arg = 1; break; case '-': if (strcmp("--param", argv[i]) == 0) next_is_arg = 1; break; } if (next_is_arg) { if (i + 1 >= argc) error("option -%c requires an argument\n", argv[i][1]); option_arg = argv[i+1]; } /* determine what options go 'as is' to the linker & the compiler */ raw_compiler_arg = raw_linker_arg = 0; if (is_linker_arg(argv[i])) { raw_linker_arg = 1; } else { if (is_directory_arg(argv[i]) || is_target_arg(argv[i])) raw_linker_arg = 1; raw_compiler_arg = !is_mingw_arg(argv[i]); } /* these things we handle explicitly so we don't pass them 'as is' */ if (argv[i][1] == 'l' || argv[i][1] == 'I' || argv[i][1] == 'L') raw_linker_arg = 0; if (argv[i][1] == 'c' || argv[i][1] == 'L') raw_compiler_arg = 0; if (argv[i][1] == 'o' || argv[i][1] == 'b' || argv[i][1] == 'V') raw_compiler_arg = raw_linker_arg = 0; /* do a bit of semantic analysis */ switch (argv[i][1]) { case 'B': str = strdup(option_arg); if (strendswith(str, "/")) str[strlen(str) - 1] = 0; if (strendswith(str, "/tools/winebuild")) { char *objdir = strdup(str); objdir[strlen(objdir) - sizeof("/tools/winebuild") + 1] = 0; opts.wine_objdir = objdir; /* don't pass it to the compiler, this generates warnings */ raw_compiler_arg = raw_linker_arg = 0; } if (!opts.prefix) opts.prefix = strarray_alloc(); strarray_add(opts.prefix, str); break; case 'b': parse_target_option( &opts, option_arg ); break; case 'V': opts.version = xstrdup( option_arg ); break; case 'c': /* compile or assemble */ if (argv[i][2] == 0) opts.compile_only = 1; /* fall through */ case 'S': /* generate assembler code */ case 'E': /* preprocess only */ if (argv[i][2] == 0) linking = 0; break; case 'f': if (strcmp("-fno-short-wchar", argv[i]) == 0) opts.noshortwchar = 1; else if (!strcmp("-fasynchronous-unwind-tables", argv[i])) opts.unwind_tables = 1; else if (!strcmp("-fno-asynchronous-unwind-tables", argv[i])) opts.unwind_tables = 0; break; case 'l': strarray_add(opts.files, strmake("-l%s", option_arg)); break; case 'L': strarray_add(opts.lib_dirs, option_arg); break; case 'M': /* map file generation */ linking = 0; break; case 'm': if (strcmp("-mno-cygwin", argv[i]) == 0) opts.use_msvcrt = 1; else if (strcmp("-mwindows", argv[i]) == 0) opts.gui_app = 1; else if (strcmp("-mconsole", argv[i]) == 0) opts.gui_app = 0; else if (strcmp("-municode", argv[i]) == 0) opts.unicode_app = 1; else if (strcmp("-m16", argv[i]) == 0) opts.win16_app = 1; else if (strcmp("-m32", argv[i]) == 0) { if (opts.target_cpu == CPU_x86_64) opts.target_cpu = CPU_x86; else if (opts.target_cpu == CPU_ARM64) opts.target_cpu = CPU_ARM; opts.force_pointer_size = 4; raw_linker_arg = 1; } else if (strcmp("-m64", argv[i]) == 0) { if (opts.target_cpu == CPU_x86) opts.target_cpu = CPU_x86_64; else if (opts.target_cpu == CPU_ARM) opts.target_cpu = CPU_ARM64; opts.force_pointer_size = 8; raw_linker_arg = 1; } else if (!strcmp("-marm", argv[i] ) || !strcmp("-mthumb", argv[i] )) { strarray_add(opts.winebuild_args, argv[i]); raw_linker_arg = 1; } else if (strncmp("-mcpu=", argv[i], 6) == 0) strarray_add(opts.winebuild_args, argv[i]); break; case 'n': if (strcmp("-nostdinc", argv[i]) == 0) opts.nostdinc = 1; else if (strcmp("-nodefaultlibs", argv[i]) == 0) opts.nodefaultlibs = 1; else if (strcmp("-nostdlib", argv[i]) == 0) opts.nostdlib = 1; else if (strcmp("-nostartfiles", argv[i]) == 0) opts.nostartfiles = 1; break; case 'o': opts.output_name = option_arg; break; case 's': if (strcmp("-static", argv[i]) == 0) linking = -1; else if(strcmp("-save-temps", argv[i]) == 0) keep_generated = 1; else if(strcmp("-shared", argv[i]) == 0) { opts.shared = 1; raw_compiler_arg = raw_linker_arg = 0; } else if (strcmp("-s", argv[i]) == 0 && opts.target_platform == PLATFORM_APPLE) { /* On Mac, change -s into -Wl,-x. ld's -s switch * is deprecated, and it doesn't work on Tiger with * MH_BUNDLEs anyway */ opts.strip = 1; raw_linker_arg = 0; } break; case 'v': if (argv[i][2] == 0) verbose++; break; case 'W': if (strncmp("-Wl,", argv[i], 4) == 0) { unsigned int j; strarray* Wl = strarray_fromstring(argv[i] + 4, ","); for (j = 0; j < Wl->size; j++) { if (!strcmp(Wl->base[j], "--image-base") && j < Wl->size - 1) { opts.image_base = strdup( Wl->base[++j] ); continue; } if (!strcmp(Wl->base[j], "--section-alignment") && j < Wl->size - 1) { opts.section_align = strdup( Wl->base[++j] ); continue; } if (!strcmp(Wl->base[j], "--large-address-aware")) { opts.large_address_aware = 1; continue; } if (!strcmp(Wl->base[j], "-static")) linking = -1; strarray_add(opts.linker_args, strmake("-Wl,%s",Wl->base[j])); } strarray_free(Wl); raw_compiler_arg = raw_linker_arg = 0; } else if (strncmp("-Wb,", argv[i], 4) == 0) { strarray* Wb = strarray_fromstring(argv[i] + 4, ","); strarray_addall(opts.winebuild_args, Wb); strarray_free(Wb); /* don't pass it to the compiler, it generates errors */ raw_compiler_arg = raw_linker_arg = 0; } break; case 'x': lang = strmake("-x%s", option_arg); strarray_add(opts.files, lang); /* we'll pass these flags ourselves, explicitly */ raw_compiler_arg = raw_linker_arg = 0; break; case '-': if (strcmp("-static", argv[i]+1) == 0) linking = -1; else if (!strncmp("--sysroot", argv[i], 9) && opts.wine_objdir) { if (argv[i][9] == '=') opts.wine_objdir = argv[i] + 10; else opts.wine_objdir = argv[++i]; raw_compiler_arg = raw_linker_arg = 0; } else if (!strncmp("--lib-suffix", argv[i], 12) && opts.wine_objdir) { if (argv[i][12] == '=') opts.lib_suffix = argv[i] + 13; else opts.lib_suffix = argv[++i]; raw_compiler_arg = raw_linker_arg = 0; } break; } /* put the arg into the appropriate bucket */ if (raw_linker_arg) { strarray_add(opts.linker_args, argv[i]); if (next_is_arg && (i + 1 < argc)) strarray_add(opts.linker_args, argv[i + 1]); } if (raw_compiler_arg) { strarray_add(opts.compiler_args, argv[i]); if (next_is_arg && (i + 1 < argc)) strarray_add(opts.compiler_args, argv[i + 1]); } /* skip the next token if it's an argument */ if (next_is_arg) i++; } else { strarray_add(opts.files, argv[i]); } } if (opts.processor == proc_cpp) linking = 0; if (linking == -1) error("Static linking is not supported\n"); if (opts.files->size == 0) forward(argc, argv, &opts); else if (linking) build(&opts); else compile(&opts, lang); return 0; }