diff options
Diffstat (limited to 'sysdeps/unix/sysv/linux/powerpc/configure.ac')
| -rw-r--r-- | sysdeps/unix/sysv/linux/powerpc/configure.ac | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/sysdeps/unix/sysv/linux/powerpc/configure.ac b/sysdeps/unix/sysv/linux/powerpc/configure.ac index bcf0c62..8d2ec60 100644 --- a/sysdeps/unix/sysv/linux/powerpc/configure.ac +++ b/sysdeps/unix/sysv/linux/powerpc/configure.ac @@ -2,6 +2,40 @@ sinclude(./aclocal.m4)dnl Autoconf lossage GLIBC_PROVIDES dnl See aclocal.m4 in the top level source directory. # Local configure fragment for sysdeps/unix/sysv/linux/powerpc/. +AC_CACHE_CHECK(whether $CC $CFLAGS -mlong-double-128 uses IBM extended format, + libc_cv_mlong_double_128ibm, [dnl +save_CFLAGS="$CFLAGS" +CFLAGS="$CFLAGS -mlong-double-128" +AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <float.h>]], [[ +#if LDBL_MANT_DIG != 106 +# error "compiler doesn't implement IBM extended format of long double" +#endif +long double foobar (long double x) { return x; }]])], + libc_cv_mlong_double_128ibm=yes, + libc_cv_mlong_double_128ibm=no) +CFLAGS="$save_CFLAGS"]) + +if test "$libc_cv_mlong_double_128ibm" = no; then + AC_CACHE_CHECK(whether $CC $CFLAGS supports -mabi=ibmlongdouble, + libc_cv_mabi_ibmlongdouble, [dnl + save_CFLAGS="$CFLAGS" + CFLAGS="$CFLAGS -mlong-double-128 -mabi=ibmlongdouble" + AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <float.h>]], [[ +#if LDBL_MANT_DIG != 106 +# error "compiler doesn't implement IBM extended format of long double" +#endif +long double foobar (long double x) { return x; }]])], + libc_cv_mabi_ibmlongdouble=yes, + libc_cv_mabi_ibmlongdouble=no) + CFLAGS="$save_CFLAGS"]) + + if test "$libc_cv_mabi_ibmlongdouble" = yes; then + CFLAGS="$CFLAGS -mabi=ibmlongdouble" + else + AC_MSG_ERROR([this configuration requires -mlong-double-128 IBM extended format support]) + fi +fi + LIBC_LINKER_FEATURE([--no-tls-get-addr-optimize], [-Wl,--no-tls-get-addr-optimize], [libc_cv_tls_get_addr_optimize=yes], [libc_cv_tls_get_addr_optimize=no]) LIBC_CONFIG_VAR([have-tls-get-addr-optimize], [$libc_cv_tls_get_addr_optimize]) |