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-rw-r--r--tools/d2c/Makefile.am3
1 files changed, 3 insertions, 0 deletions
diff --git a/tools/d2c/Makefile.am b/tools/d2c/Makefile.am
index d876ab1..53904be 100644
--- a/tools/d2c/Makefile.am
+++ b/tools/d2c/Makefile.am
@@ -30,6 +30,9 @@ d2c_SOURCES = \
qckcall.h qckcall.c \
spec.h spec.c
+# _GNU_SOURCE : asprintf
+d2c_CFLAGS = -D_GNU_SOURCE
+
d2c_LDADD = \
bits/libd2cbits.la \
conv/libd2cconv.la \