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winegcc: Use -print-libgcc-file-name to find libgcc. 

Signed-off-by: Jacek Caban <jacek@codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>
This commit is contained in:
Jacek Caban 2019-09-23 13:57:57 +02:00 committed by Alexandre Julliard
parent d63c51fd30
commit 6cba24ef1f
1 changed files with 52 additions and 2 deletions
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54
tools/winegcc/winegcc.c
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@ -96,6 +96,7 @@
#include <stdarg.h>
#include <string.h>
#include <errno.h>
#include <ctype.h>
#include "utils.h"
@ -891,6 +892,49 @@ static char *find_static_lib( const char *dll )
return NULL;
}
static const char *find_libgcc(const strarray *prefix, const strarray *link_tool)
{
const char *out = get_temp_file( "find_libgcc", ".out" );
const char *err = get_temp_file( "find_libgcc", ".err" );
strarray *link = strarray_dup( link_tool );
int sout = -1, serr = -1;
char *libgcc, *p;
struct stat st;
size_t cnt;
int ret;
strarray_add( link, "-print-libgcc-file-name" );
sout = dup( fileno(stdout) );
freopen( out, "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 );
if (ret || stat(out, &st) || !st.st_size) return NULL;
libgcc = xmalloc(st.st_size + 1);
sout = open(out, O_RDONLY);
if (sout == -1) return NULL;
cnt = read(sout, libgcc, st.st_size);
close(sout);
libgcc[cnt] = 0;
if ((p = strchr(libgcc, '\n'))) *p = 0;
return libgcc;
}
/* add specified library to the list of files */
static void add_library( struct options *opts, strarray *lib_dirs, strarray *files, const char *library )
{
@ -923,7 +967,7 @@ static void build(struct options* opts)
strarray *lib_dirs, *files;
strarray *spec_args, *link_args;
char *output_file, *output_path;
const char *spec_o_name;
const char *spec_o_name, *libgcc = NULL;
const char *output_name, *spec_file, *lang;
int generate_app_loader = 1;
const char* crt_lib = NULL;
@ -1147,6 +1191,12 @@ static void build(struct options* opts)
/* link everything together now */
link_args = get_link_args( opts, output_name );
if ((opts->nodefaultlibs || opts->shared) && is_pe)
{
libgcc = find_libgcc(opts->prefix, link_args);
if (!libgcc) libgcc = "-lgcc";
}
strarray_add(link_args, "-o");
strarray_add(link_args, output_path);
@ -1201,7 +1251,7 @@ static void build(struct options* opts)
strarray_add(link_args, "-lc");
}
if ((opts->nodefaultlibs || opts->shared) && is_pe) strarray_add( link_args, "-lgcc" );
if (libgcc) strarray_add(link_args, libgcc);
spawn(opts->prefix, link_args, 0);
strarray_free (link_args);