The dejagnu find_gcc function cannot handle if CC needs extra flags like --sysroot. So for testing target libraries use the same CC that was used for building the target libs.
New patch works even if runtest is not invoked from make as discussed https://gcc.gnu.org/ml/gcc-patches/2016-07/msg01320.html Szabolcs Nagy (4): [PR 71931] Fix libatomic tests [PR 71931] Fix libgomp tests [PR 71931] Fix libitm tests [RFC][PR 71931] Fix libvtv tests libatomic/configure | 5 +++- libatomic/configure.ac | 1 + libatomic/testsuite/Makefile.am | 2 ++ libatomic/testsuite/Makefile.in | 33 ++++++++++++--------- libatomic/testsuite/lib/libatomic.exp | 5 ++++ libatomic/testsuite/libatomic-test-support.exp.in | 1 + libgomp/testsuite/lib/libgomp.exp | 3 ++ libgomp/testsuite/libgomp-test-support.exp.in | 2 ++ libitm/configure | 7 +++-- libitm/configure.ac | 1 + libitm/testsuite/Makefile.am | 2 ++ libitm/testsuite/Makefile.in | 33 ++++++++++++--------- libitm/testsuite/lib/libitm.exp | 5 ++++ libitm/testsuite/libitm-test-support.exp.in | 1 + libvtv/Makefile.am | 4 +-- libvtv/Makefile.in | 4 +-- libvtv/configure | 3 ++ libvtv/configure.ac | 1 + libvtv/testsuite/Makefile.am | 2 ++ libvtv/testsuite/Makefile.in | 33 ++++++++++++--------- libvtv/testsuite/lib/libvtv.exp | 5 ++++ libvtv/testsuite/libvtv-test-support.exp.in | 1 + 22 files changed, 105 insertions(+), 49 deletions(-) create mode 100644 libatomic/testsuite/libatomic-test-support.exp.in create mode 100644 libitm/testsuite/libitm-test-support.exp.in create mode 100644 libvtv/testsuite/libvtv-test-support.exp.in -- 1.7.9.5