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| author | Ben Gamari <bgamari.foss@gmail.com> | 2018-04-19 15:05:50 -0400 |
|---|---|---|
| committer | Ben Gamari <ben@smart-cactus.org> | 2018-04-19 18:06:15 -0400 |
| commit | cbd73bbbb7df080d5204098aa02e5f5d0d48823c (patch) | |
| tree | 444ad64033e36ca256ce6917fc5a343d3d0a726b | |
| parent | 3c3e73103a45c9acee1682300727bad7b6a62d30 (diff) | |
| download | haskell-cbd73bbbb7df080d5204098aa02e5f5d0d48823c.tar.gz | |
configure: Use -Werror to check for existence of -no-pie
Clang throws a warning instead of an error when it is passed -no-pie,
clang: warning: argument unused during compilation: '-nopie'
[-Wunused-command-line-argument]
Consequently configure concludes that it supports -no-pie. However, this
will fail when used with -Werror. The solution is to simply use -Werror
in the configure check.
Thanks to @goldfire for reporting this.
Reviewers: hvr
Subscribers: thomie, carter, goldfire
Differential Revision: https://phabricator.haskell.org/D4557
| -rw-r--r-- | aclocal.m4 | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/aclocal.m4 b/aclocal.m4 index a48a5af238..1cef8427fc 100644 --- a/aclocal.m4 +++ b/aclocal.m4 @@ -1294,7 +1294,7 @@ AC_DEFUN([FP_GCC_SUPPORTS_NO_PIE], AC_MSG_CHECKING([whether GCC supports -no-pie]) echo 'int main() { return 0; }' > conftest.c # 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 + if $CC -no-pie -Werror -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 |