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tinycc/tcc.c

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/*
* TCC - Tiny C Compiler
*
* Copyright (c) 2001-2004 Fabrice Bellard
*
* 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 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include "tcc.h"
#if ONE_SOURCE
# include "libtcc.c"
#endif
#include "tcctools.c"
static const char help[] =
"Tiny C Compiler "TCC_VERSION" - Copyright (C) 2001-2006 Fabrice Bellard\n"
"Usage: tcc [options...] [-o outfile] [-c] infile(s)...\n"
" tcc [options...] -run infile [arguments...]\n"
"General options:\n"
" -c compile only - generate an object file\n"
" -o outfile set output filename\n"
" -run run compiled source\n"
" -fflag set or reset (with 'no-' prefix) 'flag' (see tcc -hh)\n"
" -std=c99 Conform to the ISO 1999 C standard (default).\n"
" -std=c11 Conform to the ISO 2011 C standard.\n"
" -Wwarning set or reset (with 'no-' prefix) 'warning' (see tcc -hh)\n"
" -w disable all warnings\n"
" --version -v show version\n"
" -vv show search paths or loaded files\n"
" -h -hh show this, show more help\n"
" -bench show compilation statistics\n"
" - use stdin pipe as infile\n"
" @listfile read arguments from listfile\n"
"Preprocessor options:\n"
" -Idir add include path 'dir'\n"
" -Dsym[=val] define 'sym' with value 'val'\n"
" -Usym undefine 'sym'\n"
" -E preprocess only\n"
" -C keep comments (not yet implemented)\n"
"Linker options:\n"
" -Ldir add library path 'dir'\n"
" -llib link with dynamic or static library 'lib'\n"
" -r generate (relocatable) object file\n"
" -shared generate a shared library/dll\n"
" -rdynamic export all global symbols to dynamic linker\n"
" -soname set name for shared library to be used at runtime\n"
" -Wl,-opt[=val] set linker option (see tcc -hh)\n"
"Debugger options:\n"
" -g generate runtime debug info\n"
#ifdef CONFIG_TCC_BCHECK
" -b compile with built-in memory and bounds checker (implies -g)\n"
#endif
#ifdef CONFIG_TCC_BACKTRACE
" -bt[N] link with backtrace (stack dump) support [show max N callers]\n"
#endif
"Misc. options:\n"
" -x[c|a|b|n] specify type of the next infile (C,ASM,BIN,NONE)\n"
" -nostdinc do not use standard system include paths\n"
" -nostdlib do not link with standard crt and libraries\n"
" -Bdir set tcc's private include/library dir\n"
" -MD generate dependency file for make\n"
" -MF file specify dependency file name\n"
#if defined(TCC_TARGET_I386) || defined(TCC_TARGET_X86_64)
" -m32/64 defer to i386/x86_64 cross compiler\n"
#endif
"Tools:\n"
" create library : tcc -ar [rcsv] lib.a files\n"
#ifdef TCC_TARGET_PE
" create def file : tcc -impdef lib.dll [-v] [-o lib.def]\n"
#endif
;
static const char help2[] =
"Tiny C Compiler "TCC_VERSION" - More Options\n"
"Special options:\n"
" -P -P1 with -E: no/alternative #line output\n"
" -dD -dM with -E: output #define directives\n"
" -pthread same as -D_REENTRANT and -lpthread\n"
" -On same as -D__OPTIMIZE__ for n > 0\n"
" -Wp,-opt same as -opt\n"
" -include file include 'file' above each input file\n"
" -isystem dir add 'dir' to system include path\n"
" -static link to static libraries (not recommended)\n"
" -dumpversion print version\n"
" -print-search-dirs print search paths\n"
" -dt with -run/-E: auto-define 'test_...' macros\n"
"Ignored options:\n"
" --param -pedantic -pipe -s -traditional\n"
"-W... warnings:\n"
" all turn on some (*) warnings\n"
" error stop after first warning\n"
" unsupported warn about ignored options, pragmas, etc.\n"
" write-strings strings are const\n"
" implicit-function-declaration warn for missing prototype (*)\n"
"-f[no-]... flags:\n"
" unsigned-char default char is unsigned\n"
" signed-char default char is signed\n"
" common use common section instead of bss\n"
" leading-underscore decorate extern symbols\n"
" ms-extensions allow anonymous struct in struct\n"
" dollars-in-identifiers allow '$' in C symbols\n"
"-m... target specific options:\n"
" ms-bitfields use MSVC bitfield layout\n"
#ifdef TCC_TARGET_ARM
" float-abi hard/softfp on arm\n"
#endif
#ifdef TCC_TARGET_X86_64
" no-sse disable floats on x86_64\n"
#endif
"-Wl,... linker options:\n"
" -nostdlib do not link with standard crt/libs\n"
" -[no-]whole-archive load lib(s) fully/only as needed\n"
" -export-all-symbols same as -rdynamic\n"
" -export-dynamic same as -rdynamic\n"
" -image-base= -Ttext= set base address of executable\n"
" -section-alignment= set section alignment in executable\n"
#ifdef TCC_TARGET_PE
" -file-alignment= set PE file alignment\n"
" -stack= set PE stack reserve\n"
" -large-address-aware set related PE option\n"
" -subsystem=[console/windows] set PE subsystem\n"
" -oformat=[pe-* binary] set executable output format\n"
"Predefined macros:\n"
" tcc -E -dM - < nul\n"
#else
" -rpath= set dynamic library search path\n"
" -enable-new-dtags set DT_RUNPATH instead of DT_RPATH\n"
" -soname= set DT_SONAME elf tag\n"
" -Bsymbolic set DT_SYMBOLIC elf tag\n"
" -oformat=[elf32/64-* binary] set executable output format\n"
" -init= -fini= -as-needed -O (ignored)\n"
"Predefined macros:\n"
" tcc -E -dM - < /dev/null\n"
#endif
"See also the manual for more details.\n"
;
static const char version[] =
"tcc version "TCC_VERSION" ("
#ifdef TCC_TARGET_I386
"i386"
#elif defined TCC_TARGET_X86_64
"x86_64"
#elif defined TCC_TARGET_C67
"C67"
#elif defined TCC_TARGET_ARM
"ARM"
#elif defined TCC_TARGET_ARM64
"AArch64"
#elif defined TCC_TARGET_RISCV64
"riscv64"
#endif
#ifdef TCC_ARM_HARDFLOAT
" Hard Float"
#endif
#ifdef TCC_TARGET_PE
" Windows"
#elif defined(TCC_TARGET_MACHO)
" Darwin"
#elif defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
" FreeBSD"
#else
" Linux"
#endif
")\n"
;
static void print_dirs(const char *msg, char **paths, int nb_paths)
{
int i;
printf("%s:\n%s", msg, nb_paths ? "" : " -\n");
for(i = 0; i < nb_paths; i++)
printf(" %s\n", paths[i]);
}
static void print_search_dirs(TCCState *s)
{
printf("install: %s\n", s->tcc_lib_path);
/* print_dirs("programs", NULL, 0); */
print_dirs("include", s->sysinclude_paths, s->nb_sysinclude_paths);
print_dirs("libraries", s->library_paths, s->nb_library_paths);
#ifdef TCC_TARGET_PE
printf("libtcc1:\n %s/lib/"TCC_LIBTCC1"\n", s->tcc_lib_path);
#else
printf("libtcc1:\n %s/"TCC_LIBTCC1"\n", s->tcc_lib_path);
print_dirs("crt", s->crt_paths, s->nb_crt_paths);
printf("elfinterp:\n %s\n", DEFAULT_ELFINTERP(s));
#endif
}
static void set_environment(TCCState *s)
{
char * path;
path = getenv("C_INCLUDE_PATH");
if(path != NULL) {
tcc_add_sysinclude_path(s, path);
}
path = getenv("CPATH");
if(path != NULL) {
tcc_add_include_path(s, path);
}
path = getenv("LIBRARY_PATH");
if(path != NULL) {
tcc_add_library_path(s, path);
}
}
static char *default_outputfile(TCCState *s, const char *first_file)
{
char buf[1024];
char *ext;
const char *name = "a";
if (first_file && strcmp(first_file, "-"))
name = tcc_basename(first_file);
snprintf(buf, sizeof(buf), "%s", name);
ext = tcc_fileextension(buf);
#ifdef TCC_TARGET_PE
if (s->output_type == TCC_OUTPUT_DLL)
strcpy(ext, ".dll");
else
if (s->output_type == TCC_OUTPUT_EXE)
strcpy(ext, ".exe");
else
#endif
if (s->output_type == TCC_OUTPUT_OBJ && !s->option_r && *ext)
strcpy(ext, ".o");
else
strcpy(buf, "a.out");
return tcc_strdup(buf);
}
static unsigned getclock_ms(void)
{
#ifdef _WIN32
return GetTickCount();
#else
struct timeval tv;
gettimeofday(&tv, NULL);
return tv.tv_sec*1000 + (tv.tv_usec+500)/1000;
#endif
}
int main(int argc0, char **argv0)
{
TCCState *s, *s1;
int ret, opt, n = 0, t = 0, done;
unsigned start_time = 0;
const char *first_file;
int argc; char **argv;
FILE *ppfp = stdout;
redo:
argc = argc0, argv = argv0;
s = s1 = tcc_new();
opt = tcc_parse_args(s, &argc, &argv, 1);
if (n == 0) {
if (opt == OPT_HELP) {
fputs(help, stdout);
if (!s->verbose)
return 0;
++opt;
}
if (opt == OPT_HELP2) {
fputs(help2, stdout);
return 0;
}
if (opt == OPT_M32 || opt == OPT_M64)
tcc_tool_cross(s, argv, opt); /* never returns */
if (s->verbose)
printf(version);
if (opt == OPT_AR)
return tcc_tool_ar(s, argc, argv);
#ifdef TCC_TARGET_PE
if (opt == OPT_IMPDEF)
return tcc_tool_impdef(s, argc, argv);
#endif
if (opt == OPT_V)
return 0;
if (opt == OPT_PRINT_DIRS) {
/* initialize search dirs */
set_environment(s);
tcc_set_output_type(s, TCC_OUTPUT_MEMORY);
print_search_dirs(s);
return 0;
}
if (s->nb_files == 0)
tcc_error("no input files\n");
if (s->output_type == TCC_OUTPUT_PREPROCESS) {
if (s->outfile && 0!=strcmp("-",s->outfile)) {
ppfp = fopen(s->outfile, "w");
if (!ppfp)
tcc_error("could not write '%s'", s->outfile);
}
} else if (s->output_type == TCC_OUTPUT_OBJ && !s->option_r) {
if (s->nb_libraries)
tcc_error("cannot specify libraries with -c");
if (s->nb_files > 1 && s->outfile)
tcc_error("cannot specify output file with -c many files");
}
if (s->do_bench)
start_time = getclock_ms();
}
set_environment(s);
if (s->output_type == 0)
s->output_type = TCC_OUTPUT_EXE;
tcc_set_output_type(s, s->output_type);
s->ppfp = ppfp;
if ((s->output_type == TCC_OUTPUT_MEMORY
|| s->output_type == TCC_OUTPUT_PREPROCESS)
&& (s->dflag & 16)) { /* -dt option */
if (t)
s->dflag |= 32;
s->run_test = ++t;
if (n)
--n;
}
/* compile or add each files or library */
first_file = NULL, ret = 0;
do {
struct filespec *f = s->files[n];
s->filetype = f->type;
if (f->type & AFF_TYPE_LIB) {
if (tcc_add_library_err(s, f->name) < 0)
ret = 1;
} else {
if (1 == s->verbose)
printf("-> %s\n", f->name);
if (!first_file)
first_file = f->name;
if (tcc_add_file(s, f->name) < 0)
ret = 1;
}
done = ret || ++n >= s->nb_files;
} while (!done && (s->output_type != TCC_OUTPUT_OBJ || s->option_r));
if (s->run_test) {
t = 0;
} else if (s->output_type == TCC_OUTPUT_PREPROCESS) {
;
} else if (0 == ret) {
if (s->output_type == TCC_OUTPUT_MEMORY) {
#ifdef TCC_IS_NATIVE
ret = tcc_run(s, argc, argv);
#endif
} else {
if (!s->outfile)
s->outfile = default_outputfile(s, first_file);
if (tcc_output_file(s, s->outfile))
ret = 1;
else if (s->gen_deps)
gen_makedeps(s, s->outfile, s->deps_outfile);
}
}
if (s->do_bench && done && !(t | ret))
tcc_print_stats(s, getclock_ms() - start_time);
tcc_delete(s);
if (!done)
goto redo; /* compile more files with -c */
if (t)
goto redo; /* run more tests with -dt -run */
if (ppfp && ppfp != stdout)
fclose(ppfp);
return ret;
}
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