ENH: Add a test for C source file like AC_TRY_COMPILE

1 files changed, 53 insertions, 0 deletions

diff --git a/Modules/CheckCSourceCompiles.cmake b/Modules/CheckCSourceCompiles.cmake
new file mode 100644
index 0000000000..f43ebf3ce4
--- /dev/null
+++ b/Modules/CheckCSourceCompiles.cmake
@@ -0,0 +1,53 @@
+#
+# Check if the source code provided in the SOURCE argument compiles.
+#
+# CHECK_C_SOURCE_COMPILES - macro which checks if the source code compiles\
+# SOURCE   - source code to try to compile
+# VARIABLE - variable to store size if the type exists.
+#
+# Checks the following optional VARIABLES (not arguments)
+# CMAKE_REQUIRED_LIBRARIES - Link to extra libraries
+# CMAKE_REQUIRED_FLAGS - Extra flags to C compiler
+#
+
+MACRO(CHECK_C_SOURCE_COMPILES SOURCE VAR)
+  IF("${VAR}" MATCHES "^${VAR}$")
+    SET(MACRO_CHECK_FUNCTION_DEFINITIONS 
+      "-D${VAR} ${CMAKE_REQUIRED_FLAGS}")
+    IF(CMAKE_REQUIRED_LIBRARIES)
+      SET(CHECK_C_SOURCE_COMPILES_ADD_LIBRARIES
+        "-DLINK_LIBRARIES:STRING=${CMAKE_REQUIRED_LIBRARIES}")
+    ENDIF(CMAKE_REQUIRED_LIBRARIES)
+    IF(CMAKE_REQUIRED_INCLUDES)
+      SET(CHECK_C_SOURCE_COMPILES_ADD_INCLUDES
+        "-DINCLUDE_DIRECTORIES:STRING=${CMAKE_REQUIRED_INCLUDES}")
+    ENDIF(CMAKE_REQUIRED_INCLUDES)
+    FILE(WRITE "${CMAKE_BINARY_DIR}/CMakeTmp/src.c"
+      "${SOURCE}")
+
+    MESSAGE(STATUS "Performing Test ${VAR}")
+    TRY_COMPILE(${VAR}
+      ${CMAKE_BINARY_DIR}
+      ${CMAKE_BINARY_DIR}/CMakeTmp/src.c
+      CMAKE_FLAGS 
+      "${CHECK_C_SOURCE_COMPILES_ADD_LIBRARIES}"
+      "${CHECK_C_SOURCE_COMPILES_ADD_INCLUDES}"
+      OUTPUT_VARIABLE OUTPUT)
+    IF(${VAR})
+      SET(${VAR} 1 CACHE INTERNAL "Test ${FUNCTION}")
+      MESSAGE(STATUS "Performing Test ${VAR} - Success")
+      WRITE_FILE(${CMAKE_BINARY_DIR}/CMakeOutput.log 
+        "Performing C SOURCE FILE Test ${VAR} succeded with the following output:\n"
+        "${OUTPUT}\n"
+        "Source file was:\n${SOURCE}\n" APPEND)
+    ELSE(${VAR})
+      MESSAGE(STATUS "Performing Test ${VAR} - Failed")
+      SET(${VAR} "" CACHE INTERNAL "Test ${FUNCTION}")
+      WRITE_FILE(${CMAKE_BINARY_DIR}/CMakeError.log 
+        "Performing C SOURCE FILE Test ${VAR} failed with the following output:\n"
+        "${OUTPUT}\n"
+        "Source file was:\n${SOURCE}\n" APPEND)
+    ENDIF(${VAR})
+  ENDIF("${VAR}" MATCHES "^${VAR}$")
+ENDMACRO(CHECK_C_SOURCE_COMPILES)
+