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| author | Richard Guenther <rguenther@suse.de> | 2006-02-01 10:30:43 +0000 |
|---|---|---|
| committer | Richard Biener <rguenth@gcc.gnu.org> | 2006-02-01 10:30:43 +0000 |
| commit | 36cbd091c564540e008703e1abc1707194beb5b4 (patch) | |
| tree | c30e66a064809facf023ce1ded0881049b3b0adc /libgcc-math/configure.ac | |
| parent | 916b63c37110524381d529d8b82c9ef79615fc8b (diff) | |
| download | gcc-36cbd091c564540e008703e1abc1707194beb5b4.zip gcc-36cbd091c564540e008703e1abc1707194beb5b4.tar.gz gcc-36cbd091c564540e008703e1abc1707194beb5b4.tar.bz2 | |
re PR bootstrap/26055 (libgcc-math declaration of __isinf conflicts with system header, fails bootstrap)
2006-02-01 Richard Guenther <rguenther@suse.de>
PR bootstrap/26055
* configure.ac: Disable libgcc-math if we cannot mix
declaration of __isinf and math.h inclusion.
* configure: Re-generate.
From-SVN: r110469
Diffstat (limited to 'libgcc-math/configure.ac')
| -rw-r--r-- | libgcc-math/configure.ac | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/libgcc-math/configure.ac b/libgcc-math/configure.ac index 3928552..7fa9e72 100644 --- a/libgcc-math/configure.ac +++ b/libgcc-math/configure.ac @@ -124,6 +124,25 @@ else fi +# Check for target library dependencies +cannot_build=no + +AC_MSG_CHECKING([whether math.h conflicts with defining __isinf]) +AC_TRY_LINK([ +#include "math.h" +int __isinf (double x) +{ +} +], [ +return __isinf (1.0); +], [ +AC_MSG_RESULT([no]) +], [ +AC_MSG_RESULT([yes]) +cannot_build=yes +]) + + # Now check which parts we include in the library. arch_subdirs= @@ -141,6 +160,9 @@ esac AC_SUBST(arch_subdirs) AC_SUBST(arch_libraries) AC_SUBST(arch_maps) +if test "$cannot_build" = "yes"; then + arch_subdirs= +fi AM_CONDITIONAL(BUILD_LIBGCC_MATH, [test "x$arch_subdirs" != x]) |