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2001-12-12 Ben Elliston <bje@redhat.com>

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* config.guess: Speed up detection of x86 Linux systems by using
	just the C preprocessor rather than assembling and linking a final
	executable.
This commit is contained in:
Ben Elliston 2001-12-12 03:14:13 +00:00
parent d13007a85c
commit 7bf0cf7b2b
2 changed files with 23 additions and 25 deletions
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6
ChangeLog
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@ -1,3 +1,9 @@
2001-12-12 Ben Elliston <bje@redhat.com>
* config.guess: Speed up detection of x86 Linux systems by using
just the C preprocessor rather than assembling and linking a final
executable.
2001-12-12 Jason Thorpe <thorpej@wasabisystems.com> 2001-12-12 Jason Thorpe <thorpej@wasabisystems.com>
* config.guess: Simplify assignment of machine for NetBSD targets, * config.guess: Simplify assignment of machine for NetBSD targets,

42
config.guess vendored
View File

@ -841,32 +841,24 @@ EOF
esac esac
# Determine whether the default compiler is a.out or elf # Determine whether the default compiler is a.out or elf
eval $set_cc_for_build eval $set_cc_for_build
cat >$dummy.c <<EOF sed 's/^ //' << EOF >$dummy.c
#include <features.h> #include <features.h>
#ifdef __cplusplus #ifdef __ELF__
#include <stdio.h> /* for printf() prototype */ # ifdef __GLIBC__
int main (int argc, char *argv[]) { # if __GLIBC__ >= 2
#else gnu
int main (argc, argv) int argc; char *argv[]; { # else
#endif gnulibc1
#ifdef __ELF__ # endif
# ifdef __GLIBC__ # else
# if __GLIBC__ >= 2 gnulibc1
printf ("%s-pc-linux-gnu\n", argv[1]); # endif
# else #else
printf ("%s-pc-linux-gnulibc1\n", argv[1]); gnuaout
# endif #endif
# else
printf ("%s-pc-linux-gnulibc1\n", argv[1]);
# endif
#else
printf ("%s-pc-linux-gnuaout\n", argv[1]);
#endif
return 0;
}
EOF EOF
$CC_FOR_BUILD $dummy.c -o $dummy 2>/dev/null && ./$dummy "${UNAME_MACHINE}" && rm -f $dummy.c $dummy && exit 0 libc=`$CC_FOR_BUILD -E $dummy.c 2>/dev/null | grep ^gnu` && test -n $libc && rm -f $dummy.c && echo "${UNAME_MACHINE}-pc-linux-$libc" && exit 0
rm -f $dummy.c $dummy rm -f $dummy.c
test x"${TENTATIVE}" != x && echo "${TENTATIVE}" && exit 0 test x"${TENTATIVE}" != x && echo "${TENTATIVE}" && exit 0
;; ;;
i*86:DYNIX/ptx:4*:*) i*86:DYNIX/ptx:4*:*)