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Another attempt to "detect" multiarch

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This commit is contained in:
Thomas Preud'homme 2013-02-14 15:39:35 +01:00
parent 062efe6ab8
commit b1a8233562
2 changed files with 59 additions and 21 deletions
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22
configure vendored
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@ -296,7 +296,13 @@ if test -z "$cross_prefix" ; then
gcc_major="$($CONFTEST version)"
gcc_minor="$($CONFTEST minor)"
if test "$mingw32" = "no" ; then
libc_dir="$(ldd $CONFTEST | grep libc.so | sed 's|[^/]*/\(.*/\)[^/]*|\1|')"
triplet="$($CONFTEST triplet)"
if test -f "/usr/lib/$triplet/crti.o" ; then
tcc_lddir="lib/$triplet"
multiarch_triplet="$triplet"
elif test -f "usr/lib64/crti.o" ; then
tcc_lddir="lib64"
fi
# gr: FIXME
# ldd $CONFTEST gives (ubuntu 8)
@ -306,13 +312,13 @@ if test -z "$cross_prefix" ; then
# result is crap:
# CONFIG_LDDIR="lib/tls/i686/cmov"
# CONFIG_MUADIR="tls/i686/cmov"
multiarch_triplet=${libc_dir#*/}
multiarch_triplet=${multiarch_triplet%/}
tcc_lddir="${libc_dir%%/*}"
if test -n "$multiarch_triplet" ; then
tcc_lddir="$tcc_lddir/$multiarch_triplet"
fi
#
# multiarch_triplet=${libc_dir#*/}
# multiarch_triplet=${multiarch_triplet%/}
# tcc_lddir="${libc_dir%%/*}"
# if test -n "$multiarch_triplet" ; then
# tcc_lddir="$tcc_lddir/$multiarch_triplet"
# fi
# gr: maybe for after the release:
# tcc_elfinterp="$(ldd $CONFTEST | grep 'ld.*.so' | sed 's,\s*\(\S\+\).*,\1,')"

58
conftest.c
View File

@ -1,27 +1,59 @@
#include <stdio.h>
/* Define architecture */
#if defined(__i386__)
# define TRIPLET_ARCH "i386"
#elif defined(__x86_64__)
# define TRIPLET_ARCH "x86_64"
#elif defined(__arm__)
# define TRIPLET_ARCH "arm"
#else
# define TRIPLET_ARCH "unknown"
#endif
/* Define OS */
#if defined (__linux__)
# define TRIPLET_OS "linux"
#elif defined (__FreeBSD__) || defined (__FreeBSD_kernel__)
# define TRIPLET_OS "kfreebsd"
#elif !defined (__GNU__)
# define TRIPLET_OS "unknown"
#endif
/* Define calling convention and ABI */
#define TRIPLET_ABI "gnu"
#ifdef __GNU__
# define TRIPLET TRIPLET_ARCH "-" TRIPLET_ABI
#else
# define TRIPLET TRIPLET_ARCH "-" TRIPLET_OS "-" TRIPLET_ABI
#endif
int main(int argc, char *argv[])
{
switch(argc == 2 ? argv[1][0] : 0) {
#ifdef __GNUC__
case 'v':
printf("%d\n", __GNUC__);
break;
case 'm':
printf("%d\n", __GNUC_MINOR__);
break;
#else
case 'v':
case 'm':
puts("0");
break;
#endif
case 'b':
{
volatile unsigned foo = 0x01234567;
puts(*(unsigned char*)&foo == 0x67 ? "no" : "yes");
break;
}
#ifdef __GNUC__
case 'm':
printf("%d\n", __GNUC_MINOR__);
break;
case 'v':
printf("%d\n", __GNUC__);
break;
#else
case 'm':
case 'v':
puts("0");
break;
#endif
case 't':
puts(TRIPLET);
break;
case -1:
/* to test -Wno-unused-result */
fread(NULL, 1, 1, NULL);