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This is commitc8e759b421(Subversion r279708) "libgomp/test: Fix compilation for build sysroot" and follow-up commit749bd22ddc"libgomp/test: Remove a build sysroot fix regression" done differently, avoiding build-tree testing use of any random gunk that may appear in build-time 'CC', 'CXX', 'FC'. PR testsuite/91884 PR testsuite/109951 libgomp/ * configure.ac: Revert earlier changes, instead 'AC_SUBST(SYSROOT_CFLAGS_FOR_TARGET)'. * Makefile.in: Regenerate. * configure: Likewise. * testsuite/Makefile.in: Likewise. * testsuite/lib/libgomp.exp (libgomp_init): Remove "Fix up '-funconfigured-libstdc++-v3' in 'GXX_UNDER_TEST'" code. If '--with-build-sysroot=[...]' was specified, use it for build-tree testing. * testsuite/libgomp-site-extra.exp.in (GCC_UNDER_TEST) (GXX_UNDER_TEST, GFORTRAN_UNDER_TEST): Don't set. (SYSROOT_CFLAGS_FOR_TARGET): Set. * testsuite/libgomp.c++/c++.exp (lang_source_re) (lang_include_flags): Set for build-tree testing. * testsuite/libgomp.oacc-c++/c++.exp (lang_source_re) (lang_include_flags): Likewise. Co-authored-by: Chung-Lin Tang <cltang@codesourcery.com>
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