cmake: add compiler minimum version check for GNU and Clang.

1 files changed, 50 insertions, 1 deletions

diff --git a/host/CMakeLists.txt b/host/CMakeLists.txt
index 46615bd19..412154fcd 100644
--- a/host/CMakeLists.txt
+++ b/host/CMakeLists.txt
@@ -31,6 +31,55 @@ ENABLE_TESTING()
 list(INSERT CMAKE_MODULE_PATH 0 ${CMAKE_SOURCE_DIR}/cmake/Modules)
 
 ########################################################################
+# Check Compiler Version
+########################################################################
+# Full C++11 came with GCC 4.7.
+SET(GCC_MIN_VERSION "4.4.0")
+# for c++0x or c++11 support, require:
+#   Apple Clang >= 500
+# or
+#   Clang >= 3.3.0
+SET(CLANG_MIN_VERSION "3.3.0")
+SET(APPLECLANG_MIN_VERSION "500")
+
+IF(${CMAKE_CXX_COMPILER_ID} STREQUAL "GNU")
+    IF(DEFINED CMAKE_CXX_COMPILER_VERSION)
+        IF(${CMAKE_CXX_COMPILER_VERSION} VERSION_LESS ${GCC_MIN_VERSION})
+            MESSAGE(WARNING "\nThe compiler selected to build UHD (GCC version ${CMAKE_CXX_COMPILER_VERSION} : ${CMAKE_CXX_COMPILER}) is older than that officially supported (${GCC_MIN_VERSION} minimum). This build may or not work. We highly recommend using a more recent GCC version.")
+         ENDIF()
+    ELSE()
+        MESSAGE(WARNING "\nCannot determine the version of the compiler selected to build UHD (GCC : ${CMAKE_CXX_COMPILER}). This build may or not work. We highly recommend using GCC version ${GCC_MIN_VERSION} or more recent.")
+    ENDIF()
+ELSEIF(${CMAKE_CXX_COMPILER_ID} STREQUAL "Clang")
+    EXECUTE_PROCESS(COMMAND
+        ${CMAKE_CXX_COMPILER} -v
+        RESULT_VARIABLE res ERROR_VARIABLE err
+        ERROR_STRIP_TRAILING_WHITESPACE)
+    IF(${res} STREQUAL "0")
+        # output is in error stream
+        STRING(REGEX MATCH "^Apple.*" IS_APPLE ${err})
+        IF("${IS_APPLE}" STREQUAL "")
+            SET(MIN_VERSION ${CLANG_MIN_VERSION})
+            SET(APPLE_STR "")
+            # retrieve the compiler's version from it
+            STRING(REGEX MATCH "clang version [0-9.]+" CLANG_OTHER_VERSION ${err})
+            STRING(REGEX MATCH "[0-9.]+" CLANG_VERSION ${CLANG_OTHER_VERSION})
+        ELSE()
+            SET(MIN_VERSION ${APPLECLANG_MIN_VERSION})
+            SET(APPLE_STR "Apple ")
+            # retrieve the compiler's version from it
+            STRING(REGEX MATCH "(clang-[0-9.]+)" CLANG_APPLE_VERSION ${err})
+            STRING(REGEX MATCH "[0-9.]+" CLANG_VERSION ${CLANG_APPLE_VERSION})
+        ENDIF()
+        IF(${CLANG_VERSION} VERSION_LESS "${MIN_VERSION}")
+            MESSAGE(WARNING "\nThe compiler selected to build UHD (${APPLE_STR}Clang version ${CLANG_VERSION} : ${CMAKE_CXX_COMPILER}) is older than that officially supported (${MIN_VERSION} minimum). This build may or not work. We highly recommend using Apple Clang version ${APPLECLANG_MIN_VERSION} or more recent, or Clang version ${CLANG_MIN_VERSION} or more recent.")
+        ENDIF()
+    ELSE()
+        MESSAGE(WARNING "\nCannot determine the version of the compiler selected to build UHD (${APPLE_STR}Clang : ${CMAKE_CXX_COMPILER}). This build may or not work. We highly recommend using Apple Clang version ${APPLECLANG_MIN_VERSION} or more recent, or Clang version ${CLANG_MIN_VERSION} or more recent.")
+    ENDIF()
+ENDIF()
+
+########################################################################
 # Packaging Variables
 ########################################################################
 
@@ -214,7 +263,7 @@ ENDIF(MSVC)
 SET(Boost_ADDITIONAL_VERSIONS
     "1.46.0" "1.46" "1.47.0" "1.47" "1.48.0" "1.48" "1.48.0" "1.49" "1.50.0" "1.50"
     "1.51.0" "1.51" "1.52.0" "1.52" "1.53.0" "1.53" "1.54.0" "1.54" "1.55.0" "1.55"
-    "1.56.0" "1.56"
+    "1.56.0" "1.56" "1.57" "1.57" "1.58" "1.59" "1.60"
 )
 FIND_PACKAGE(Boost 1.46 COMPONENTS ${BOOST_REQUIRED_COMPONENTS})