1 files changed, 1 insertions, 1 deletions
diff --git a/configure b/configure
index 50a52cf4..81fde581 100755
--- a/configure
+++ b/configure
@@ -2288,7 +2288,7 @@ if check_cpp_condition features.h "defined __UCLIBC__"; then
     add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
 elif check_cpp_condition features.h "defined __GLIBC__"; then
     libc_type=glibc
-    add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
+    add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600 -D_DEFAULT_SOURCE
 # MinGW headers can be installed on Cygwin, so check for newlib first.
 elif check_cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
     libc_type=newlib