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-rw-r--r--libstdc++-v3/configure.ac2
1 files changed, 1 insertions, 1 deletions
diff --git a/libstdc++-v3/configure.ac b/libstdc++-v3/configure.ac
index f5e306acc26..5d0a54f9c4c 100644
--- a/libstdc++-v3/configure.ac
+++ b/libstdc++-v3/configure.ac
@@ -117,7 +117,7 @@ if $GLIBCXX_IS_NATIVE; then
# Check for available headers.
AC_CHECK_HEADERS([nan.h ieeefp.h endian.h sys/isa_defs.h machine/endian.h \
machine/param.h sys/machine.h fp.h locale.h float.h inttypes.h gconv.h \
- sys/types.h])
+ sys/types.h sys/ipc.h sys/sem.h])
GLIBCXX_CHECK_COMPILER_FEATURES
GLIBCXX_CHECK_LINKER_FEATURES