diff options
Diffstat (limited to 'Configure')
| -rwxr-xr-x | Configure | 45 |
1 files changed, 37 insertions, 8 deletions
@@ -5240,9 +5240,6 @@ esac case "$usecbacktrace" in "$define") libswanted="$libswanted bfd" ;; esac -case "$usequadmath" in -"$define") libswanted="$libswanted quadmath" ;; -esac libsfound='' libsfiles='' libsdirs='' @@ -16852,17 +16849,49 @@ case "$usequadmath:$i_quadmath" in define:define) nvtype="__float128" nvsize=16 - case "$libs" in - *quadmath*) ;; - *) $cat <<EOM >&4 + : libquadmath is not in the usual places, and the place + : changes if the compiler is upgraded. So ask the compiler if it + : can find it. + : We do not need to save this, if it fails we abort. + libs="$libs -lquadmath" + set try + $cat >try.c <<EOM +#include <quadmath.h> +#include <stdio.h> +int main(int argc, char *argv[]) { + __float128 x = 1.0; + if (fabsq(logq(x)) > 1e-6) { + fputs("quadmath is broken\n", stderr); + return 1; + } + puts("define"); + return 0; +} +EOM + yyy='' + if eval $compile_ok; then + yyy=`$run ./try` + case "$yyy" in + define) ;; + *) cat <<EOM >&4 + +*** You requested the use of the quadmath library, but +*** it appears to be nonfunctional. +*** Cannot continue, aborting. + +EOM + exit 1 + ;; + esac + else + $cat <<EOM >&4 *** You requested the use of the quadmath library, but you *** do not seem to have the quadmath library installed. *** Cannot continue, aborting. EOM exit 1 - ;; - esac + fi ;; define:*) $cat <<EOM >&4 |