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-rw-r--r--buildlib/environment.mak.in2
1 files changed, 1 insertions, 1 deletions
diff --git a/buildlib/environment.mak.in b/buildlib/environment.mak.in
index 3166c2e7f..4f001cc97 100644
--- a/buildlib/environment.mak.in
+++ b/buildlib/environment.mak.in
@@ -3,7 +3,7 @@
# C++ compiler options
CC = @CC@
-CPPFLAGS+= @CPPFLAGS@ @DEFS@
+CPPFLAGS+= @CPPFLAGS@ @DEFS@ -D_REENTRANT
CXX = @CXX@
CXXFLAGS+= @CXXFLAGS@ @X_CFLAGS@