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| author | Ben Gamari <bgamari.foss@gmail.com> | 2016-11-11 12:05:21 -0500 |
|---|---|---|
| committer | Ben Gamari <ben@smart-cactus.org> | 2016-11-11 12:05:40 -0500 |
| commit | d421a7e22e0be3de32376970b8c38ec308f959da (patch) | |
| tree | 80e298beed878f74532e46d2249c78ab0a8e3630 /aclocal.m4 | |
| parent | ec0bf8117d1aefd20711a6152ebbca63f3bd0774 (diff) | |
| download | haskell-d421a7e22e0be3de32376970b8c38ec308f959da.tar.gz | |
Pass -no-pie to GCC
Certain distributions (e.g. Debian and Ubuntu) have enabled PIE be
default in their GCC packaging. This breaks our abuse of GCC as a linker
which requires that we pass -Wl,-r, which is incompatible with
PIE (since the former implies that we are generating a relocatable
object file and the latter an executable).
This is a second attempt at D2691. This attempt constrasts with D2691 in that
it preserves the "does gcc support -no-pie" flag in settings, allowing this to
be reconfigured by `configure` during installation of a binary distribution.
Thanks for @rwbarton for drawing attention to this issue.
Test Plan: Validate
Reviewers: austin, hvr, erikd
Reviewed By: erikd
Subscribers: thomie, rwbarton, erikd
Differential Revision: https://phabricator.haskell.org/D2693
GHC Trac Issues: #12759
Diffstat (limited to 'aclocal.m4')
| -rw-r--r-- | aclocal.m4 | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/aclocal.m4 b/aclocal.m4 index df9d42028d..aea85f4908 100644 --- a/aclocal.m4 +++ b/aclocal.m4 @@ -509,12 +509,14 @@ AC_DEFUN([FP_SETTINGS], SettingsCCompilerFlags="$CONF_CC_OPTS_STAGE2" SettingsCCompilerLinkFlags="$CONF_GCC_LINKER_OPTS_STAGE2" + SettingsCCompilerSupportsNoPie="$CONF_GCC_SUPPORTS_NO_PIE" SettingsLdFlags="$CONF_LD_LINKER_OPTS_STAGE2" AC_SUBST(SettingsCCompilerCommand) AC_SUBST(SettingsHaskellCPPCommand) AC_SUBST(SettingsHaskellCPPFlags) AC_SUBST(SettingsCCompilerFlags) AC_SUBST(SettingsCCompilerLinkFlags) + AC_SUBST(SettingsCCompilerSupportsNoPie) AC_SUBST(SettingsLdCommand) AC_SUBST(SettingsLdFlags) AC_SUBST(SettingsArCommand) @@ -1322,6 +1324,25 @@ AC_SUBST(GccIsClang) rm -f conftest.txt ]) +# FP_GCC_SUPPORTS_NO_PIE +# ---------------------- +# Does gcc support the -no-pie option? If so we should pass it to gcc when +# joining objects since -pie may be enabled by default. +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 + CONF_GCC_SUPPORTS_NO_PIE=YES + AC_MSG_RESULT([yes]) + else + CONF_GCC_SUPPORTS_NO_PIE=NO + AC_MSG_RESULT([no]) + fi + rm -f conftest.c conftest.o conftest +]) + dnl Small feature test for perl version. Assumes PerlCmd dnl contains path to perl binary. dnl |