diff options
Diffstat (limited to 'pkgs/development/libraries/gsl/disable-fma.patch')
| -rw-r--r-- | pkgs/development/libraries/gsl/disable-fma.patch | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/pkgs/development/libraries/gsl/disable-fma.patch b/pkgs/development/libraries/gsl/disable-fma.patch new file mode 100644 index 000000000000..d5c0d620863e --- /dev/null +++ b/pkgs/development/libraries/gsl/disable-fma.patch @@ -0,0 +1,32 @@ +--- configure.ac 2011-09-22 16:13:22 +0000 ++++ configure.ac 2011-11-26 23:55:24 +0000 +@@ -381,6 +381,28 @@ + AC_SUBST(HAVE_DARWIN_IEEE_INTERFACE) + AC_SUBST(HAVE_DARWIN86_IEEE_INTERFACE) + ++dnl check for compiler flags to disable use of FMA ++save_cflags="$CFLAGS" ++AC_CACHE_CHECK([for compiler flags to disable use of FMA], ac_cv_c_fma_flags, ++[ ++if test X"$GCC" = Xyes; then ++ fma_flags='-ffp-contract=off' ++else ++ fma_flags= ++fi ++if test X"$fma_flags" != X; then ++ CFLAGS="$fma_flags $CFLAGS" ++ AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[]], [[int foo;]])],[ac_cv_c_fma_flags="$fma_flags"],[ac_cv_c_fma_flags="none"]) ++else ++ ac_cv_c_fma_flags="none" ++fi]) ++ ++if test "$ac_cv_c_fma_flags" != "none" ; then ++ CFLAGS="$ac_cv_c_fma_flags $save_cflags" ++else ++ CFLAGS="$save_cflags" ++fi ++ + dnl Check for IEEE control flags + + save_cflags="$CFLAGS" + |