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Create config-print program to test $cc

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Create a helper program called config-print to print informations
relative to the BUILD/HOST environment in the case of native
compilation.
This commit is contained in:
Thomas Preud'homme 2013-02-13 22:35:36 +01:00
parent a4cbd9b002
commit e298f60838
2 changed files with 41 additions and 46 deletions
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35
config-print.c Normal file
View File

@ -0,0 +1,35 @@
#include <inttypes.h>
#include <stdio.h>
int main(int argc, char *argv[]) {
switch(argc == 2 ? argv[1][0] : 0) {
case 'v':
#ifdef __GNUC__
# if __GNUC__ >= 4
puts("4");
# elif __GNUC__ > 3 || (__GNUC__ == 3 && __GNUC_MINOR__ >= 2)
puts("3");
# else
puts("2");
# endif
#else
puts("0");
#endif
break;
case 'm':
#ifdef __GNUC__
printf("%d\n", __GNUC_MINOR__);
#else
puts("-1");
#endif
break;
case 'e':
{
volatile uint32_t i=0x01234567;
if ((*((uint8_t*)(&i))) == 0x67)
puts("yes");
}
break;
}
return 0;
}

52
configure vendored
View File

@ -22,10 +22,7 @@ fi
# bashism: TMPN="${TMPDIR1}/tcc-conf-${RANDOM}-$$-${RANDOM}.c"
TMPN="./conftest-$$"
TMPC=$TMPN.c
TMPH=$TMPN.h
TMPO=$TMPN.o
TMPE=$TMPN
# default parameters
build_cross="no"
@ -206,20 +203,11 @@ fi
if test -z "$cross_prefix" ; then
# ---
# big/little endian test
cat > $TMPC << EOF
#include <inttypes.h>
int main(int argc, char ** argv){
volatile uint32_t i=0x01234567;
return (*((uint8_t*)(&i))) == 0x67;
}
EOF
if $cc -o $TMPE $TMPC 2>/dev/null ; then
$TMPE && bigendian="yes"
if ! $cc -o config-print config-print.c 2>/dev/null ; then
echo "$cc is not able to compile TCC"
else
echo big/little test failed
bigendian="$(./config-print e)"
gcc_major="$(./config-print v)"
fi
else
@ -231,37 +219,8 @@ esac
fi
# check gcc version
cat > $TMPC <<EOF
int main(void) {
#if __GNUC__ > 3 || (__GNUC__ == 3 && __GNUC_MINOR__ >= 2)
return 0;
#else
#error gcc < 3.2
#endif
}
EOF
gcc_major="2"
if $cc -o $TMPO $TMPC 2> /dev/null ; then
gcc_major="3"
fi
cat > $TMPC <<EOF
int main(void) {
#if __GNUC__ >= 4
return 0;
#else
#error gcc < 4
#endif
}
EOF
if $cc -o $TMPO $TMPC 2> /dev/null ; then
gcc_major="4"
fi
if test -z "$cross_prefix" ; then
libc_dir="$(ldd $TMPO | grep libc.so | sed 's|[^/]*/\(.*/\)[^/]*|\1|')"
libc_dir="$(ldd ./config-print | grep libc.so | sed 's|[^/]*/\(.*/\)[^/]*|\1|')"
multiarch_triplet=${libc_dir#*/}
multiarch_triplet=${multiarch_triplet%/}
lddir="${libc_dir%%/*}"
@ -269,6 +228,7 @@ if test -z "$cross_prefix" ; then
lddir="$lddir/$multiarch_triplet"
fi
fi
rm config-print
if test x"$show_help" = "xyes" ; then
cat << EOF