diff options
Diffstat (limited to 'sysdeps/x86_64/preconfigure.ac')
| -rw-r--r-- | sysdeps/x86_64/preconfigure.ac | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/sysdeps/x86_64/preconfigure.ac b/sysdeps/x86_64/preconfigure.ac new file mode 100644 index 0000000000..600700ea1a --- /dev/null +++ b/sysdeps/x86_64/preconfigure.ac @@ -0,0 +1,20 @@ +GLIBC_PROVIDES dnl See aclocal.m4 in the top level source directory. +# Local preconfigure fragment for sysdeps/x86_64 + +test -n "$base_machine" || case "$machine" in +x86_64) + base_machine=x86_64 + # Check if we are building for x32. + AC_CACHE_CHECK(whether $CC compiles in -mx32 mode by default, + libc_cv_x32, [dnl + AC_TRY_COMPILE(dnl +[#ifndef __ILP32__ +# error not x32 +#endif], [], libc_cv_x32=yes, libc_cv_x32=no)]) + if test $libc_cv_x32 = yes; then + machine=x86_64/x32 + else + machine=x86_64/64 + fi + ;; +esac |