X-Git-Url: https://git.exim.org/exim.git/blobdiff_plain/1d7a353eb367991d8de63c32efa64f8224f3089f..9d26b8c05f5308b474b560fa2a8a1046e2f5c1b6:/src/OS/os.h-Linux

diff --git a/src/OS/os.h-Linux b/src/OS/os.h-Linux
index eb7036d0f..5186ec89d 100644
--- a/src/OS/os.h-Linux
+++ b/src/OS/os.h-Linux
@@ -1,5 +1,12 @@
 /* Exim: OS-specific C header file for Linux */
 
+/* Some weird variants may require invocation with C99 and features.h
+inclusion to build, with the 64-bit arithmetic. Make compiler selection
+their problem, but build anyway. */
+
+#include <features.h>
+
+
 #define CRYPT_H
 #define GLIBC_IP_OPTIONS
 #define HAVE_MMAP