1 files changed, 75 insertions, 0 deletions
diff --git a/CMake/CurlCheckCSourceCompiles.cmake b/CMake/CurlCheckCSourceCompiles.cmake
new file mode 100644
index 000000000..d025769aa
--- /dev/null
+++ b/CMake/CurlCheckCSourceCompiles.cmake
@@ -0,0 +1,75 @@
+# - Check if the source code provided in the SOURCE argument compiles.
+# CURL_CHECK_C_SOURCE_COMPILES(SOURCE VAR)
+# - macro which checks if the source code compiles
+#  SOURCE   - source code to try to compile
+#  VAR      - variable to store whether the source code compiled
+#
+# The following variables may be set before calling this macro to
+# modify the way the check is run:
+#
+#  CMAKE_REQUIRED_FLAGS = string of compile command line flags
+#  CMAKE_REQUIRED_DEFINITIONS = list of macros to define (-DFOO=bar)
+#  CMAKE_REQUIRED_INCLUDES = list of include directories
+#  CMAKE_REQUIRED_LIBRARIES = list of libraries to link
+
+MACRO(CURL_CHECK_C_SOURCE_COMPILES SOURCE VAR)
+  IF("${VAR}" MATCHES "^${VAR}$" OR "${VAR}" MATCHES "UNKNOWN")
+    SET(message "${VAR}")
+    # If the number of arguments is greater than 2 (SOURCE VAR)
+    IF(${ARGC} GREATER 2)
+      # then add the third argument as a message
+      SET(message "${ARGV2} (${VAR})")
+    ENDIF(${ARGC} GREATER 2)
+    SET(MACRO_CHECK_FUNCTION_DEFINITIONS
+      "-D${VAR} ${CMAKE_REQUIRED_FLAGS}")
+    IF(CMAKE_REQUIRED_LIBRARIES)
+      SET(CURL_CHECK_C_SOURCE_COMPILES_ADD_LIBRARIES
+        "-DLINK_LIBRARIES:STRING=${CMAKE_REQUIRED_LIBRARIES}")
+    ELSE(CMAKE_REQUIRED_LIBRARIES)
+      SET(CURL_CHECK_C_SOURCE_COMPILES_ADD_LIBRARIES)
+    ENDIF(CMAKE_REQUIRED_LIBRARIES)
+    IF(CMAKE_REQUIRED_INCLUDES)
+      SET(CURL_CHECK_C_SOURCE_COMPILES_ADD_INCLUDES
+        "-DINCLUDE_DIRECTORIES:STRING=${CMAKE_REQUIRED_INCLUDES}")
+    ELSE(CMAKE_REQUIRED_INCLUDES)
+      SET(CURL_CHECK_C_SOURCE_COMPILES_ADD_INCLUDES)
+    ENDIF(CMAKE_REQUIRED_INCLUDES)
+    SET(src "")
+    FOREACH(def ${EXTRA_DEFINES})
+      SET(src "${src}#define ${def} 1\n")
+    ENDFOREACH(def)
+    FOREACH(inc ${HEADER_INCLUDES})
+      SET(src "${src}#include <${inc}>\n")
+    ENDFOREACH(inc)
+
+    SET(src "${src}\nint main() { ${SOURCE} ; return 0; }")
+    SET(CMAKE_CONFIGURABLE_FILE_CONTENT "${src}")
+    CONFIGURE_FILE(${CMAKE_CURRENT_SOURCE_DIR}/CMake/CMakeConfigurableFile.in
+      "${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeTmp/src.c"
+      IMMEDIATE)
+    MESSAGE(STATUS "Performing Test ${message}")
+    TRY_COMPILE(${VAR}
+      ${CMAKE_BINARY_DIR}
+      ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeTmp/src.c
+      COMPILE_DEFINITIONS ${CMAKE_REQUIRED_DEFINITIONS}
+      CMAKE_FLAGS -DCOMPILE_DEFINITIONS:STRING=${MACRO_CHECK_FUNCTION_DEFINITIONS}
+      "${CURL_CHECK_C_SOURCE_COMPILES_ADD_LIBRARIES}"
+      "${CURL_CHECK_C_SOURCE_COMPILES_ADD_INCLUDES}"
+      OUTPUT_VARIABLE OUTPUT)
+    IF(${VAR})
+      SET(${VAR} 1 CACHE INTERNAL "Test ${message}")
+      MESSAGE(STATUS "Performing Test ${message} - Success")
+      FILE(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeOutput.log
+        "Performing C SOURCE FILE Test ${message} succeded with the following output:\n"
+        "${OUTPUT}\n"
+        "Source file was:\n${src}\n")
+    ELSE(${VAR})
+      MESSAGE(STATUS "Performing Test ${message} - Failed")
+      SET(${VAR} "" CACHE INTERNAL "Test ${message}")
+      FILE(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeError.log
+        "Performing C SOURCE FILE Test ${message} failed with the following output:\n"
+        "${OUTPUT}\n"
+        "Source file was:\n${src}\n")
+    ENDIF(${VAR})
+  ENDIF("${VAR}" MATCHES "^${VAR}$" OR "${VAR}" MATCHES "UNKNOWN")
+ENDMACRO(CURL_CHECK_C_SOURCE_COMPILES)