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| author | Ben Gamari <bgamari.foss@gmail.com> | 2016-11-14 14:13:30 -0500 |
|---|---|---|
| committer | Ben Gamari <ben@smart-cactus.org> | 2017-04-20 17:38:44 -0400 |
| commit | 0f9f1da3d76ccbd1c19a08929f8aa4a8b73cac29 (patch) | |
| tree | af55d855a49e508be5c3d8dcc7a1acd59d23555e | |
| parent | 2dfae4d5d5c509f09d8e67a52094b3719fd75e8c (diff) | |
| download | haskell-ghc-7.10.tar.gz | |
configure: Verify that GCC recognizes -no-pie flagghc-7.10
It seems like GCC versions prior to 4.8 exit with code 0 when faced with
an unrecognized flag. Silly compilers.
Test Plan: Validate
Reviewers: hvr, austin, ggreif
Reviewed By: ggreif
Subscribers: thomie, erikd
Differential Revision: https://phabricator.haskell.org/D2707
GHC Trac Issues: #12759
(cherry picked from commit 011af2bf448c28db68a55293abaa5b294f170e37)
| -rw-r--r-- | aclocal.m4 | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/aclocal.m4 b/aclocal.m4 index b58d18176c..2c69b78480 100644 --- a/aclocal.m4 +++ b/aclocal.m4 @@ -1260,7 +1260,8 @@ AC_DEFUN([FP_GCC_SUPPORTS_NO_PIE], AC_REQUIRE([AC_PROG_CC]) AC_MSG_CHECKING([whether GCC supports -no-pie]) echo 'int main() { return 0; }' > conftest.c - if ${CC-cc} -o conftest -no-pie conftest.c > /dev/null 2>&1; then + # Some GCC versions only warn when passed an unrecognized flag. + if $CC -no-pie -x c /dev/null -dM -E > conftest.txt 2>&1 && ! grep -i unrecognized conftest.txt > /dev/null 2>&1; then CONF_GCC_SUPPORTS_NO_PIE=YES AC_MSG_RESULT([yes]) else |