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-rw-r--r--libstdc++-v3/include/Makefile.am2
1 files changed, 1 insertions, 1 deletions
diff --git a/libstdc++-v3/include/Makefile.am b/libstdc++-v3/include/Makefile.am
index 6e7b28303e1..6a9c4f09ed4 100644
--- a/libstdc++-v3/include/Makefile.am
+++ b/libstdc++-v3/include/Makefile.am
@@ -852,7 +852,7 @@ pch_output_dirs = \
${pch1_output_builddir} ${pch2_output_builddir} ${pch3_output_builddir}
pch_output_anchors = \
${pch1_output_anchor} ${pch2_output_anchor} ${pch3_output_anchor}
-PCHFLAGS=-Winvalid-pch -x c++-header $(CXXFLAGS)
+PCHFLAGS=-x c++-header $(CXXFLAGS)
if GLIBCXX_BUILD_PCH
pch_build = ${pch_output}
else