[gentoo-commits] repo/gentoo:master commit in: eclass/, eclass/tests/

["Michał Górny" <mgorny@gentoo.org>]

commit:     6f0e2e53c401a01ee8015e356699bbfb9d246e35
Author:     Michał Górny <mgorny <AT> gentoo <DOT> org>
AuthorDate: Sat Jul  1 16:14:44 2017 +0000
Commit:     Michał Górny <mgorny <AT> gentoo <DOT> org>
CommitDate: Fri Aug 25 13:53:18 2017 +0000
URL:        https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=6f0e2e53

flag-o-matic.eclass: Strip LDFLAGS unsupported by the C compiler, #621274

Include LDFLAGS in the variables stripped by strip-unsupported-flags.
The code reuses the current functions for testing CC, and so only remove
LDFLAGS that are rejected by the C compiler and not the linker. This
solves the case of bug #621274 where LDFLAGS contained GCC-specific
-flto flag.

 eclass/flag-o-matic.eclass   | 3 +++
 eclass/tests/flag-o-matic.sh | 2 +-
 2 files changed, 4 insertions(+), 1 deletion(-)

diff --git a/eclass/flag-o-matic.eclass b/eclass/flag-o-matic.eclass
index 79866e04a48..4e3cfff5afd 100644
--- a/eclass/flag-o-matic.eclass
+++ b/eclass/flag-o-matic.eclass
@@ -546,6 +546,9 @@ strip-unsupported-flags() {
 	export CXXFLAGS=$(test-flags-CXX ${CXXFLAGS})
 	export FFLAGS=$(test-flags-F77 ${FFLAGS})
 	export FCFLAGS=$(test-flags-FC ${FCFLAGS})
+	# note: this does not verify the linker flags but it is enough
+	# to strip invalid C flags which are much more likely, #621274
+	export LDFLAGS=$(test-flags-CC ${LDFLAGS})
 }
 
 # @FUNCTION: get-flag

diff --git a/eclass/tests/flag-o-matic.sh b/eclass/tests/flag-o-matic.sh
index 5e7ee354bf3..53af9f862c4 100755
--- a/eclass/tests/flag-o-matic.sh
+++ b/eclass/tests/flag-o-matic.sh
@@ -55,7 +55,7 @@ done <<<"
 
 tbegin "strip-unsupported-flags"
 strip-unsupported-flags
-[[ ${CFLAGS} == "" ]] && [[ ${CXXFLAGS} == "-z=2" ]]
+[[ ${CFLAGS} == "" ]] && [[ ${CXXFLAGS} == "-z=2" ]] && [[ ${LDFLAGS} == "" ]]
 ftend
 
 for var in $(all-flag-vars) ; do