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/*
* Copyright (C) 2000 Manuel Novoa III
*
* This is a crude wrapper to use uClibc with gcc.
* It was originally written to work around ./configure for ext2fs-utils.
* It certainly can be improved, but it works for me in the normal cases.
*
* TODO:
* Check/modify gcc-specific environment variables?
*/
#ifdef DEBUG
#include <stdio.h>
#endif
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include "gcc-uClibc.h"
#define UCLIBC_CRT0 UCLIBC_DIR"crt0.o"
#define UCLIBC_CRT0_G UCLIBC_CRT0
#define UCLIBC_LIB UCLIBC_DIR"libc.a"
#define UCLIBC_SHAREDLIB "-luClibc"
#if 1
#define UCLIBC_LIB_G UCLIBC_LIB
#define UCLIBC_SHAREDLIB_G UCLIBC_SHAREDLIB
#else
#define UCLIBC_LIB_G UCLIBC_DIR"libc.a-debug"
#endif
#define UCLIBC_INC "-I"UCLIBC_DIR"include/"
static char static_linking[] = "-static";
static char nostdinc[] = "-nostdinc";
static char nostartfiles[] = "-nostartfiles";
static char nodefaultlibs[] = "-nodefaultlibs";
static char nostdlib[] = "-nostdlib";
int main(int argc, char **argv)
{
int debugging = 0, linking = 1, use_static_linking = 0;
int use_stdinc = 1, use_start = 1, use_stdlib = 1;
int i, j;
int source_count;
char ** gcc_argv;
source_count = 0;
/* FIXME: We need to work out the install vs use-in-built-dir
* issue..*/
/* Apparently gcc doesn't accept this stuff via the command line */
setenv("COMPILER_PATH", UCLIBC_DIR"extra/gcc-uClibc/", 1);
setenv("LIBRARY_PATH", UCLIBC_DIR"lib/", 1);
/* The double '/' works around a gcc bug */
setenv("GCC_EXEC_PREFIX", UCLIBC_DIR"extra/gcc-uClibc//", 1);
for ( i = 1 ; i < argc ; i++ ) {
if (argv[i][0] == '-') { /* option */
switch (argv[i][1]) {
case 'c':
case 'S':
case 'E':
case 'r':
if (argv[i][2] == 0) linking = 0;
break;
case 'g':
if (argv[i][2] == 0) debugging = 1;
break;
case 'n':
if (strcmp(nostdinc,argv[i]) == 0) {
use_stdinc = 0;
} else if (strcmp(nostartfiles,argv[i]) == 0) {
use_start = 0;
} else if (strcmp(nodefaultlibs,argv[i]) == 0) {
use_stdlib = 0;
} else if (strcmp(nostdlib,argv[i]) == 0) {
use_start = 0;
use_stdlib = 0;
}
break;
case 's':
if (strcmp(static_linking,argv[i]) == 0) {
use_static_linking = 1;
}
break;
case 'W':
if (strncmp("-Wl,",argv[i],4) == 0) {
if (strstr(argv[i],static_linking) != 0) {
use_static_linking = 1;
}
}
break;
case '-':
if (strcmp(static_linking,argv[i]+1) == 0) {
use_static_linking = 1;
}
break;
}
} else { /* assume it is an existing source file */
++source_count;
}
}
#if 1
gcc_argv = __builtin_alloca(sizeof(char*) * (argc + 20));
#else
if (!(gcc_argv = malloc(sizeof(char) * (argc + 20)))) {
return EXIT_FAILURE;
}
#endif
i = 0;
gcc_argv[i++] = GCC_BIN;
for ( j = 1 ; j < argc ; j++ ) {
gcc_argv[i++] = argv[j];
}
if (use_stdinc) {
gcc_argv[i++] = nostdinc;
gcc_argv[i++] = UCLIBC_INC;
gcc_argv[i++] = GCC_INCDIR;
}
if (linking && source_count) {
if (use_start) {
if (debugging) {
gcc_argv[i++] = UCLIBC_CRT0_G;
} else {
gcc_argv[i++] = UCLIBC_CRT0;
}
}
if (use_stdlib) {
gcc_argv[i++] = nostdlib;
if (use_static_linking) {
if (debugging) {
gcc_argv[i++] = UCLIBC_LIB_G;
} else {
gcc_argv[i++] = UCLIBC_LIB;
}
} else {
if (DYNAMIC_LINKER[0]) { /* not empty string */
gcc_argv[i++] = "-Wl,--dynamic-linker,"DYNAMIC_LINKER;
}
if (debugging) {
gcc_argv[i++] = UCLIBC_SHAREDLIB_G;
} else {
gcc_argv[i++] = UCLIBC_SHAREDLIB;
}
}
gcc_argv[i++] = GCC_LIB;
}
}
gcc_argv[i++] = NULL;
#ifdef DEBUG
for ( j = 0 ; gcc_argv[j] ; j++ ) {
printf("arg[%2i] = %s\n", j, gcc_argv[j]);
}
return EXIT_SUCCESS;
#else
return execvp(GCC_BIN, gcc_argv);
#endif
}
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