Add a build.h macro BOTAN_GCC_VERSION which is set to major*100+minor*10+patch

if we are compiling under GCC, or 0 otherwise.

Use it in cpuid.cpp for use of GCC's cpuid.h header file.

If we don't have a method of calling cpuid, print a warning.

1 files changed, 7 insertions, 0 deletions

diff --git a/src/build-data/buildh.in b/src/build-data/buildh.in
index 724801040..90d274d58 100644
--- a/src/build-data/buildh.in
+++ b/src/build-data/buildh.in
@@ -35,6 +35,13 @@
   #define BOTAN_USE_GCC_INLINE_ASM 0
 #endif
 
+#ifdef __GNUC__
+  #define BOTAN_GCC_VERSION \
+     (__GNUC__ * 100 + __GNUC_MINOR__ * 10 + __GNUC_PATCH__)
+#else
+  #define BOTAN_GCC_VERSION 0
+#endif
+
 /* Target identification and feature test macros */
 %{target_os_defines}