gosthash2012: Provide cmake test for _addcarry_u64

[openssl-gost/engine.git] / CMakeLists.txt

diff --git a/CMakeLists.txt b/CMakeLists.txt
index ea6920e7af2528ae0fa115f7b974c5761cebe158..5d6da65729cab1fa0d0dd5a81c5be0d8c4cdd85c 100644 (file)
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -4,6 +4,7 @@ project(gost-engine LANGUAGES C)
 include(GNUInstallDirs)
 include(CheckLibraryExists)
 include(CheckFunctionExists)
+include(CheckCSourceRuns)
 
 enable_testing()
 
@@ -47,6 +48,23 @@ else()
  add_definitions(-DL_ENDIAN)
 endif()
 
+check_c_source_runs("
+  #ifdef _MSC_VER
+  # include <intrin.h>
+  #else
+  # include <x86intrin.h>
+  #endif
+  int main(void) {
+  unsigned long long x = -1, y = 1, r;
+    unsigned char cf;
+    cf = _addcarry_u64(1, (unsigned long)x, y, &r);
+    return !(cf == 1 && r == 1);
+  }
+  " ADDCARRY_U64)
+if (ADDCARRY_U64)
+  add_definitions(-DHAVE_ADDCARRY_U64)
+endif()
+
 set(BIN_DIRECTORY bin)
 
 # Same soversion as OpenSSL