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| author | Daniel Dunbar <daniel@zuster.org> | 2010-08-11 23:53:59 +0000 |
|---|---|---|
| committer | Daniel Dunbar <daniel@zuster.org> | 2010-08-11 23:53:59 +0000 |
| commit | ee0f32d723431cdae943e8a8d45ecdb856a0e76c (patch) | |
| tree | a87f1f927894d4596886dd8c3642f3a7ef66bf2a /autoconf | |
| parent | 7def14f40f0b47551e2d66ec2f140a18b5bbbea4 (diff) | |
| download | external_llvm-ee0f32d723431cdae943e8a8d45ecdb856a0e76c.zip external_llvm-ee0f32d723431cdae943e8a8d45ecdb856a0e76c.tar.gz external_llvm-ee0f32d723431cdae943e8a8d45ecdb856a0e76c.tar.bz2 | |
configure: Add detection of the linker version string.
- Review appreciated, as long as you understand that I understand that this is
a horrible hack.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110883 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'autoconf')
| -rw-r--r-- | autoconf/configure.ac | 3 | ||||
| -rw-r--r-- | autoconf/m4/link_options.m4 | 21 |
2 files changed, 24 insertions, 0 deletions
diff --git a/autoconf/configure.ac b/autoconf/configure.ac index 29a57b8..7211fe1 100644 --- a/autoconf/configure.ac +++ b/autoconf/configure.ac @@ -1041,6 +1041,9 @@ AC_PATH_PROGS(OCAMLDEP, [ocamldep]) AC_PATH_PROGS(OCAMLDOC, [ocamldoc]) AC_PATH_PROGS(GAS, [gas as]) +dnl Get the version of the linker in use. +AC_LINK_GET_VERSION + dnl Determine whether the linker supports the -R option. AC_LINK_USE_R diff --git a/autoconf/m4/link_options.m4 b/autoconf/m4/link_options.m4 index b48710c..4c5f2f4 100644 --- a/autoconf/m4/link_options.m4 +++ b/autoconf/m4/link_options.m4 @@ -1,4 +1,25 @@ # +# Get the linker version string. +# +# This macro is specific to LLVM. +# +AC_DEFUN([AC_LINK_GET_VERSION], + [AC_CACHE_CHECK([for linker version],[llvm_cv_link_version], + [ + version_string="$(ld -v 2>&1 | head -1)" + + # Check for ld64. + if (echo "$version_string" | grep -q "ld64"); then + llvm_cv_link_version=$(echo "$version_string" | sed -e "s#.*ld64-\([^ ]*\)#\1#") + else + llvm_cv_link_version=$(echo "$version_string" | sed -e "s#[^0-9]*\([0-9.]*\).*#\1#") + fi + ]) + AC_DEFINE_UNQUOTED([HOST_LINK_VERSION],"$llvm_cv_link_version", + [Linker version detected at compile time.]) +]) + +# # Determine if the system can handle the -R option being passed to the linker. # # This macro is specific to LLVM. |