tbb-backend effective target should check ability to link TBB
PR libstdc++/90252 * testsuite/lib/libstdc++.exp (check_effective_target_tbb-backend): Changed v3_target_compile check from preprocess to executable. Added "-ltbb" to v3_target_compile flags. From-SVN: r271451
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2019-05-20 Thomas Rodgers <trodgers@redhat.com>
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PR libstdc++/90252
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* testsuite/lib/libstdc++.exp (check_effective_target_tbb-backend):
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Changed v3_target_compile check from preprocess to executable.
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Added "-ltbb" to v3_target_compile flags.
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2019-05-20 Thomas Rodgers <trodgers@redhat.com>
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* testsuite/lib/libstdc++.exp (check_effective_target_tbb-backend):
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@ -1586,15 +1586,20 @@ proc check_effective_target_tbb-backend { } {
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# Set up and preprocess a C++ test program that depends
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# on tbb
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set src tbb_backend[pid].cc
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set exe tbb_backend[pid].x
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set f [open $src "w"]
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puts $f "#include <tbb/tbb.h>"
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puts $f "#if TBB_INTERFACE_VERSION < 10000"
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puts $f "# error Intel(R) Threading Building Blocks 2018 is required; older versions are not supported."
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puts $f "#endif"
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puts $f "int main ()"
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puts $f "{"
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puts $f " return 0;"
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puts $f "}"
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close $f
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set lines [v3_target_compile $src /dev/null preprocess ""]
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set lines [v3_target_compile $src $exe executable "-ltbb"]
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file delete $src
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if [string match "" $lines] {
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