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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
*/
#ifdef ONE_SOURCE
#include "libtcc.c"
#else
#include "tcc.h"
#endif
#include "tcctools.c"
static void help(void)
{
printf("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 man page)\n"
" -Wwarning set or reset (with 'no-' prefix) 'warning' (see man page)\n"
" -w disable all warnings\n"
" -v show version\n"
" -vv show included files (as sole argument show search paths)\n"
" -h show this help\n"
" -bench show compilation statistics\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"
" -P[1] no / alternative #line output with -E\n"
" -dD -dM output #define directives with -E\n"
" -include file include file above each input file\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\n"
" -rdynamic export all global symbols to dynamic linker\n"
" -soname set name for shared library to be used at runtime\n"
" -static static linking\n"
" -pthread link with -lpthread and -D_REENTRANT (POSIX Linux)\n"
" -Wl,-opt[=val] set linker option (see manual)\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 show N callers in stack traces\n"
#endif
"Misc options:\n"
" -x[c|a|n] specify type of the next infile\n"
" -nostdinc do not use standard system include paths\n"
" -nostdlib do not link with standard crt and libraries\n"
" -Bdir use 'dir' as tcc's private library/include path\n"
" -MD generate target dependencies for make\n"
" -MF depfile put generated dependencies here\n"
" -dumpversion print version\n"
" - use stdin pipe as infile\n"
" @listfile read arguments from listfile\n"
"Target specific options:\n"
" -m32/64 execute i386/x86-64 cross compiler\n"
" -mms-bitfields use MSVC bitfield layout\n"
#ifdef TCC_TARGET_ARM
" -mfloat-abi hard/softfp on arm\n"
#endif
#ifdef TCC_TARGET_X86_64
" -mno-sse disable floats on x86-64\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 void version(void)
{
printf("tcc version %s ("
#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"
# ifdef TCC_ARM_HARDFLOAT
" Hard Float"
# endif
#elif defined TCC_TARGET_ARM64
"AArch64"
# ifdef TCC_ARM_HARDFLOAT
" Hard Float"
# endif
#endif
#ifdef TCC_TARGET_PE
" Windows"
#elif defined(__APPLE__)
/* Current Apple OS name as of 2016 */
" macOS"
#elif defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
" FreeBSD"
#elif defined(__DragonFly__)
" DragonFly BSD"
#elif defined(__NetBSD__)
" NetBSD"
#elif defined(__OpenBSD__)
" OpenBSD"
#elif defined(__linux__)
" Linux"
#else
" Unidentified system"
#endif
")\n", TCC_VERSION);
}
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);
#ifndef TCC_TARGET_PE
print_dirs("crt", s->crt_paths, s->nb_crt_paths);
printf("elfinterp:\n %s\n", DEFAULT_ELFINTERP(s));
#endif
}
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 argc, char **argv)
{
TCCState *s;
int ret, opt, n = 0;
unsigned start_time = 0;
const char *first_file;
redo:
s = tcc_new();
opt = tcc_parse_args(s, &argc, &argv, 1);
if (n == 0) {
if (opt == OPT_HELP)
return help(), 1;
if (opt == OPT_M32 || opt == OPT_M64)
tcc_tool_cross(s, argv, opt); /* never returns */
if (s->verbose)
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;
tcc_set_environment(s);
if (opt == OPT_PRINT_DIRS) {
/* initialize search dirs */
tcc_set_output_type(s, TCC_OUTPUT_MEMORY);
print_search_dirs(s);
return 0;
}
n = s->nb_files;
if (n == 0)
tcc_error("no input files\n");
if (s->output_type == TCC_OUTPUT_PREPROCESS) {
if (!s->outfile) {
s->ppfp = stdout;
} else {
s->ppfp = fopen(s->outfile, "w");
if (!s->ppfp)
tcc_error("could not write '%s'", s->outfile);
}
} else if (s->output_type == TCC_OUTPUT_OBJ) {
if (s->nb_libraries != 0 && !s->option_r)
tcc_error("cannot specify libraries with -c");
if (n > 1 && s->outfile)
tcc_error("cannot specify output file with -c many files");
} else {
if (s->option_pthread)
tcc_set_options(s, "-lpthread");
}
if (s->do_bench)
start_time = getclock_ms();
}
if (s->output_type == 0)
s->output_type = TCC_OUTPUT_EXE;
tcc_set_output_type(s, s->output_type);
/* compile or add each files or library */
for (first_file = NULL, ret = 0;;) {
struct filespec *f = s->files[s->nb_files - n];
s->filetype = f->type;
s->alacarte_link = f->alacarte;
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;
}
s->filetype = 0;
s->alacarte_link = 1;
if (ret || --n == 0 || s->output_type == TCC_OUTPUT_OBJ)
break;
}
if (s->output_type == TCC_OUTPUT_PREPROCESS) {
if (s->outfile)
fclose(s->ppfp);
} 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 && ret == 0 && n == 0)
tcc_print_stats(s, getclock_ms() - start_time);
tcc_delete(s);
if (ret == 0 && n)
goto redo; /* compile more files with -c */
return ret;
}
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