cryptopp: fix build with host-gcc 4.7.x

Fixes:
 - http://autobuild.buildroot.org/results/9ab386124e4a09b50598c6f95ad40b25a83d227e

Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

diff --git a/package/cryptopp/0001-Fix-GCC-version-for-RDSEED-intrinsic.patch b/package/cryptopp/0001-Fix-GCC-version-for-RDSEED-intrinsic.patch
new file mode 100644 (file)
index 0000000..e059601
--- /dev/null
+++ b/package/cryptopp/0001-Fix-GCC-version-for-RDSEED-intrinsic.patch
@@ -0,0 +1,49 @@
+From 31465400675c75d8ea0556d708a7efbf915bc366 Mon Sep 17 00:00:00 2001
+From: Fabrice Fontaine <fontaine.fabrice@gmail.com>
+Date: Sat, 10 Mar 2018 12:14:23 +0100
+Subject: [PATCH] Fix GCC version for RDSEED intrinsic
+
+rdseed is only available on gcc 4.8.x, not on gcc 4.7.x
+
+Fixes:
+ - http://autobuild.buildroot.org/results/9ab386124e4a09b50598c6f95ad40b25a83d227e
+
+Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
+---
+ rdrand.cpp | 6 +++---
+ 1 file changed, 3 insertions(+), 3 deletions(-)
+
+diff --git a/rdrand.cpp b/rdrand.cpp
+index 900fcd96..64b12208 100644
+--- a/rdrand.cpp
++++ b/rdrand.cpp
+@@ -74,7 +74,7 @@
+ #  else\r
+ #    define GCC_RDRAND_ASM_AVAILABLE 1\r
+ #  endif\r
+-#  if defined(__RDSEED__) && (CRYPTOPP_GCC_VERSION >= 40700) && !defined(__OPTIMIZE__)\r
++#  if defined(__RDSEED__) && (CRYPTOPP_GCC_VERSION >= 40800) && !defined(__OPTIMIZE__)\r
+ #    define ALL_RDSEED_INTRIN_AVAILABLE 1\r
+ #  else\r
+ #    define GCC_RDSEED_ASM_AVAILABLE 1\r
+@@ -291,7 +291,7 @@ inline void RDSEED32(void* output)
+         : "=a" (*reinterpret_cast<word32*>(output))\r
+         : : "cc"\r
+     );\r
+-#elif defined(GCC_RDSEED_ASM_AVAILABLE) && (CRYPTOPP_GCC_VERSION >= 40700)\r
++#elif defined(GCC_RDSEED_ASM_AVAILABLE) && (CRYPTOPP_GCC_VERSION >= 40800)\r
+     __asm__ __volatile__\r
+     (\r
+         INTEL_NOPREFIX\r
+@@ -333,7 +333,7 @@ inline void RDSEED64(void* output)
+         : "=a" (*reinterpret_cast<word64*>(output))\r
+         : : "cc"\r
+     );\r
+-#elif defined(GCC_RDSEED_ASM_AVAILABLE) && (CRYPTOPP_GCC_VERSION >= 40700)\r
++#elif defined(GCC_RDSEED_ASM_AVAILABLE) && (CRYPTOPP_GCC_VERSION >= 40800)\r
+     __asm__ __volatile__\r
+     (\r
+         INTEL_NOPREFIX\r
+-- 
+2.11.0
+