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| author | Nick Lewycky <nicholas@mxc.ca> | 2009-03-12 03:34:19 +0000 |
|---|---|---|
| committer | Nick Lewycky <nicholas@mxc.ca> | 2009-03-12 03:34:19 +0000 |
| commit | 8bc080358f15ab814822e29795b17dbaceb769e7 (patch) | |
| tree | 844c95faa0e52d5837ec138f798e597b13ceaf0f /autoconf/m4 | |
| parent | 054401b9f2f90e07d06ce0550f6df4f4ecbe2f18 (diff) | |
Set ARCH to x86 on mixed 32/64-bit Linux systems.
Remove the explicit if OS = Darwin test around the setting of -m32/-m64.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@66765 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'autoconf/m4')
| -rw-r--r-- | autoconf/m4/linux_mixed_64_32.m4 | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/autoconf/m4/linux_mixed_64_32.m4 b/autoconf/m4/linux_mixed_64_32.m4 new file mode 100644 index 0000000000..7c781ac280 --- /dev/null +++ b/autoconf/m4/linux_mixed_64_32.m4 @@ -0,0 +1,17 @@ +# +# Some Linux machines run a 64-bit kernel with a 32-bit userspace. 'uname -m' +# shows these at x86_64, so in that case, ask the system 'gcc' what it thinks. +# +AC_DEFUN([AC_IS_LINUX_MIXED], +[AC_CACHE_CHECK(for 32-bit userspace on 64-bit system,llvm_cv_linux_mixed, +[ AC_LANG_PUSH([C]) + AC_COMPILE_IFELSE([AC_LANG_PROGRAM( + [[#ifndef __x86_64__ + error: Not x86-64 even if uname says so! + #endif + ]])], + [llvm_cv_linux_mixed=no], + [llvm_cv_linux_mixed=yes]) + AC_LANG_POP([C]) +]) +]) |