Moved pdkim declaration to satisfy older compilers

[exim.git] / src / src / exim.h

diff --git a/src/src/exim.h b/src/src/exim.h
index 601dfed7485d220c57028ee8b046827c8ecc21e7..c18c9aef3f906d2e9b59133093ce7068d71a2786 100644 (file)
--- a/src/src/exim.h
+++ b/src/src/exim.h
@@ -20,6 +20,13 @@ This call dates back at least as far as SUSv2. */
 
 #define HAVE_SRANDOM
 
+/* This is primarily for the Gnu C library; we define it before os.h so that
+os.h has a chance to hurriedly undef it, Just In Case.  We need C99 for some
+64-bit math support, and defining _ISOC99_SOURCE breaks <resolv.h> and friends.
+*/
+
+#define _GNU_SOURCE 1
+
 /* First of all include the os-specific header, which might set things that
 are needed by any of the other headers, including system headers. */