BUG: Need to use the new CheckSymbolExists because the one in CMake 1.6 can be broken

Source/CTest/Curl/CMake/CheckSymbolExists.cmake

@@ -0,0 +1,58 @@
+#
+# Check if the symbol exists in include files
+#
+# CHECK_SYMBOL_EXISTS - macro which checks the symbol exists in include files.
+# SYMBOL - symbol
+# FILES  - include files to check
+# VARIABLE - variable to return result
+#
+
+MACRO(CHECK_SYMBOL_EXISTS SYMBOL FILES VARIABLE)
+  IF("${VARIABLE}" MATCHES "^${VARIABLE}$")
+    SET(CHECK_SYMBOL_EXISTS_CONTENT "/* */\n")
+    SET(MACRO_CHECK_SYMBOL_EXISTS_FLAGS ${CMAKE_REQUIRED_FLAGS})
+    STRING(ASCII 35 POUND)
+    STRING(ASCII 40 OPEN_PARENT)
+    STRING(ASCII 41 CLOSE_PARENT)
+    SET(PARENTS "${OPEN_PARENT}${CLOSE_PARENT}")
+    IF(CMAKE_REQUIRED_LIBRARIES)
+      SET(CHECK_SYMBOL_EXISTS_LIBS 
+        "-DLINK_LIBRARIES:STRING=${CMAKE_REQUIRED_LIBRARIES}")
+    ENDIF(CMAKE_REQUIRED_LIBRARIES)
+    FOREACH(FILE ${FILES})
+      SET(CHECK_SYMBOL_EXISTS_CONTENT
+            "${CHECK_SYMBOL_EXISTS_CONTENT}${POUND}include <${FILE}>\n")
+    ENDFOREACH(FILE)
+    SET(CHECK_SYMBOL_EXISTS_CONTENT
+      "${CHECK_SYMBOL_EXISTS_CONTENT}\nvoid cmakeRequireSymbol${OPEN_PARENT}int dummy,...${CLOSE_PARENT}{${OPEN_PARENT}void${CLOSE_PARENT}dummy;}\nint main${PARENTS}\n{\n${POUND}ifndef ${SYMBOL}\n  cmakeRequireSymbol${OPEN_PARENT}0,&${SYMBOL}${CLOSE_PARENT};\n${POUND}endif\n  return 0;\n}\n")
+
+    WRITE_FILE(${CMAKE_BINARY_DIR}/CMakeTmp/CheckSymbolExists.c 
+               "${CHECK_SYMBOL_EXISTS_CONTENT}")
+    
+    MESSAGE(STATUS "Looking for ${SYMBOL}")
+    TRY_COMPILE(${VARIABLE}
+               ${CMAKE_BINARY_DIR}
+               ${CMAKE_BINARY_DIR}/CMakeTmp/CheckSymbolExists.c
+               CMAKE_FLAGS 
+                -DCOMPILE_DEFINITIONS:STRING=${MACRO_CHECK_SYMBOL_EXISTS_FLAGS}
+               "${CHECK_SYMBOL_EXISTS_LIBS}"
+               OUTPUT_VARIABLE OUTPUT)
+    IF(${VARIABLE})
+      MESSAGE(STATUS "Looking for ${SYMBOL} - found")
+      SET(${VARIABLE} 1 CACHE INTERNAL "Have symbol ${SYMBOL}")
+      WRITE_FILE(${CMAKE_BINARY_DIR}/CMakeOutput.log 
+        "Determining if the ${SYMBOL} "
+        "exist passed with the following output:\n"
+        "${OUTPUT}\nFile ${CMAKE_BINARY_DIR}/CMakeTmp/CheckSymbolExists.c:\n"
+        "${CHECK_SYMBOL_EXISTS_CONTENT}" APPEND)
+    ELSE(${VARIABLE})
+      MESSAGE(STATUS "Looking for ${SYMBOL} - not found.")
+      SET(${VARIABLE} "" CACHE INTERNAL "Have symbol ${SYMBOL}")
+      WRITE_FILE(${CMAKE_BINARY_DIR}/CMakeError.log 
+        "Determining if the ${SYMBOL} "
+        "exist failed with the following output:\n"
+        "${OUTPUT}\nFile ${CMAKE_BINARY_DIR}/CMakeTmp/CheckSymbolExists.c:\n"
+        "${CHECK_SYMBOL_EXISTS_CONTENT}" APPEND)
+    ENDIF(${VARIABLE})
+  ENDIF("${VARIABLE}" MATCHES "^${VARIABLE}$")
+ENDMACRO(CHECK_SYMBOL_EXISTS)

Source/CTest/Curl/CMakeLists.txt

@@ -25,7 +25,7 @@ INCLUDE (${CMAKE_ROOT}/Modules/CheckFunctionExists.cmake)
 INCLUDE (${CMAKE_ROOT}/Modules/CheckIncludeFile.cmake)
 INCLUDE (${CMAKE_ROOT}/Modules/CheckIncludeFiles.cmake)
 INCLUDE (${CMAKE_ROOT}/Modules/CheckLibraryExists.cmake)
-INCLUDE (${CMAKE_ROOT}/Modules/CheckSymbolExists.cmake)
+INCLUDE (${LIBCURL_SOURCE_DIR}/CMake/CheckSymbolExists.cmake)
 INCLUDE (${CMAKE_ROOT}/Modules/CheckTypeSize.cmake)
 
 SET(libCurl_SRCS