summaryrefslogtreecommitdiffstats
path: root/cmake
diff options
context:
space:
mode:
authorChris Robinson <[email protected]>2011-07-23 00:48:19 -0700
committerChris Robinson <[email protected]>2011-07-23 00:48:19 -0700
commit8dfa2560b142a6dd6e9a386ca05cbadf7d6c6c40 (patch)
tree5a4586ba1ca7ac92ad3aba859ab3f42fe5ed2c2a /cmake
parent0c8c3b16d232558b7c23e3cbf784fb3cfc88d792 (diff)
Use a better method for determining if shared functions exist
Diffstat (limited to 'cmake')
-rw-r--r--cmake/CheckSharedFunctionExists.c38
-rw-r--r--cmake/CheckSharedFunctionExists.cmake92
-rw-r--r--cmake/CheckSharedLibraryExists.cmake70
3 files changed, 92 insertions, 108 deletions
diff --git a/cmake/CheckSharedFunctionExists.c b/cmake/CheckSharedFunctionExists.c
deleted file mode 100644
index 31e3fa92..00000000
--- a/cmake/CheckSharedFunctionExists.c
+++ /dev/null
@@ -1,38 +0,0 @@
-#ifdef CHECK_SHARED_FUNCTION_EXISTS
-
-#include <stdlib.h>
-
-#ifndef CALLSTACK
-#define CALLSTACK
-#endif
-
-#ifdef _WIN32
-#ifdef ARGSTACK
-char __stdcall CHECK_SHARED_FUNCTION_EXISTS(ARGSTACK);
-#else
-char __stdcall CHECK_SHARED_FUNCTION_EXISTS(void);
-#endif
-#else
-char CHECK_SHARED_FUNCTION_EXISTS();
-#endif
-
-#ifdef __CLASSIC_C__
-int main(){
- int ac;
- char*av[];
-#else
-int main(int ac, char*av[]){
-#endif
- CHECK_SHARED_FUNCTION_EXISTS(CALLSTACK);
- if(ac > 1000)
- {
- return *av[0];
- }
- return 0;
-}
-
-#else /* CHECK_SHARED_FUNCTION_EXISTS */
-
-# error "CHECK_SHARED_FUNCTION_EXISTS has to specify the function"
-
-#endif /* CHECK_SHARED_FUNCTION_EXISTS */
diff --git a/cmake/CheckSharedFunctionExists.cmake b/cmake/CheckSharedFunctionExists.cmake
new file mode 100644
index 00000000..4980effa
--- /dev/null
+++ b/cmake/CheckSharedFunctionExists.cmake
@@ -0,0 +1,92 @@
+# - Check if a symbol exists as a function, variable, or macro
+# CHECK_SYMBOL_EXISTS(<symbol> <files> <variable>)
+#
+# Check that the <symbol> is available after including given header
+# <files> and store the result in a <variable>. Specify the list
+# of files in one argument as a semicolon-separated list.
+#
+# If the header files define the symbol as a macro it is considered
+# available and assumed to work. If the header files declare the
+# symbol as a function or variable then the symbol must also be
+# available for linking. If the symbol is a type or enum value
+# it will not be recognized (consider using CheckTypeSize or
+# CheckCSourceCompiles).
+#
+# 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
+
+#=============================================================================
+# Copyright 2003-2011 Kitware, Inc.
+#
+# Distributed under the OSI-approved BSD License (the "License");
+# see accompanying file Copyright.txt for details.
+#
+# This software is distributed WITHOUT ANY WARRANTY; without even the
+# implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+# See the License for more information.
+#=============================================================================
+# (To distribute this file outside of CMake, substitute the full
+# License text for the above reference.)
+
+MACRO(CHECK_SHARED_FUNCTION_EXISTS SYMBOL FILES LIBRARY LOCATION VARIABLE)
+ IF("${VARIABLE}" MATCHES "^${VARIABLE}$")
+ SET(CMAKE_CONFIGURABLE_FILE_CONTENT "/* */\n")
+ SET(MACRO_CHECK_SYMBOL_EXISTS_FLAGS ${CMAKE_REQUIRED_FLAGS})
+ IF(CMAKE_REQUIRED_LIBRARIES)
+ SET(CHECK_SYMBOL_EXISTS_LIBS
+ "-DLINK_LIBRARIES:STRING=${CMAKE_REQUIRED_LIBRARIES};${LIBRARY}")
+ ELSE(CMAKE_REQUIRED_LIBRARIES)
+ SET(CHECK_SYMBOL_EXISTS_LIBS
+ "-DLINK_LIBRARIES:STRING=${LIBRARY}")
+ ENDIF(CMAKE_REQUIRED_LIBRARIES)
+ IF(CMAKE_REQUIRED_INCLUDES)
+ SET(CMAKE_SYMBOL_EXISTS_INCLUDES
+ "-DINCLUDE_DIRECTORIES:STRING=${CMAKE_REQUIRED_INCLUDES}")
+ ELSE(CMAKE_REQUIRED_INCLUDES)
+ SET(CMAKE_SYMBOL_EXISTS_INCLUDES)
+ ENDIF(CMAKE_REQUIRED_INCLUDES)
+ FOREACH(FILE ${FILES})
+ SET(CMAKE_CONFIGURABLE_FILE_CONTENT
+ "${CMAKE_CONFIGURABLE_FILE_CONTENT}#include <${FILE}>\n")
+ ENDFOREACH(FILE)
+ SET(CMAKE_CONFIGURABLE_FILE_CONTENT
+ "${CMAKE_CONFIGURABLE_FILE_CONTENT}\nvoid cmakeRequireSymbol(int dummy,...){(void)dummy;}\nint main()\n{\n cmakeRequireSymbol(0,&${SYMBOL});\n return 0;\n}\n")
+
+ CONFIGURE_FILE("${CMAKE_ROOT}/Modules/CMakeConfigurableFile.in"
+ "${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeTmp/CheckSymbolExists.c" @ONLY)
+
+ MESSAGE(STATUS "Looking for ${SYMBOL} in ${LIBRARY}")
+ TRY_COMPILE(${VARIABLE}
+ ${CMAKE_BINARY_DIR}
+ ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeTmp/CheckSymbolExists.c
+ COMPILE_DEFINITIONS ${CMAKE_REQUIRED_DEFINITIONS}
+ CMAKE_FLAGS
+ -DCOMPILE_DEFINITIONS:STRING=${MACRO_CHECK_SYMBOL_EXISTS_FLAGS}
+ -DLINK_DIRECTORIES:STRING=${LOCATION}
+ "${CHECK_SYMBOL_EXISTS_LIBS}"
+ "${CMAKE_SYMBOL_EXISTS_INCLUDES}"
+ OUTPUT_VARIABLE OUTPUT)
+ IF(${VARIABLE})
+ MESSAGE(STATUS "Looking for ${SYMBOL} in ${LIBRARY} - found")
+ SET(${VARIABLE} 1 CACHE INTERNAL "Have symbol ${SYMBOL} in ${LIBRARY}")
+ FILE(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeOutput.log
+ "Determining if the ${SYMBOL} "
+ "exist in ${LIBRARY} passed with the following output:\n"
+ "${OUTPUT}\nFile ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeTmp/CheckSymbolExists.c:\n"
+ "${CMAKE_CONFIGURABLE_FILE_CONTENT}\n")
+ ELSE(${VARIABLE})
+ MESSAGE(STATUS "Looking for ${SYMBOL} in ${LIBRARY} - not found.")
+ SET(${VARIABLE} "" CACHE INTERNAL "Have symbol ${SYMBOL} in ${LIBRARY}")
+ FILE(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeError.log
+ "Determining if the ${SYMBOL} "
+ "exist in ${LIBRARY} failed with the following output:\n"
+ "${OUTPUT}\nFile ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeTmp/CheckSymbolExists.c:\n"
+ "${CMAKE_CONFIGURABLE_FILE_CONTENT}\n")
+ ENDIF(${VARIABLE})
+ ENDIF("${VARIABLE}" MATCHES "^${VARIABLE}$")
+ENDMACRO(CHECK_SHARED_FUNCTION_EXISTS)
diff --git a/cmake/CheckSharedLibraryExists.cmake b/cmake/CheckSharedLibraryExists.cmake
deleted file mode 100644
index 0069d892..00000000
--- a/cmake/CheckSharedLibraryExists.cmake
+++ /dev/null
@@ -1,70 +0,0 @@
-# - Check if the function exists.
-# CHECK_LIBRARY_EXISTS (LIBRARY FUNCTION LOCATION VARIABLE)
-#
-# LIBRARY - the name of the library you are looking for
-# FUNCTION - the name of the function
-# ARGCOUNT - number of arguments for stdcall functions
-# LOCATION - location where the library should be found
-# VARIABLE - variable to store the result
-#
-# The following variables may be set before calling this macro to
-# modify the way the check is run:
-#
-# CMAKE_REQUIRED_FLAGS = string of compile command line flags
-# CMAKE_REQUIRED_DEFINITIONS = list of macros to define (-DFOO=bar)
-# CMAKE_REQUIRED_LIBRARIES = list of libraries to link
-
-MACRO(CHECK_SHARED_LIBRARY_EXISTS LIBRARY FUNCTION ARGCOUNT LOCATION VARIABLE)
- IF("${VARIABLE}" MATCHES "^${VARIABLE}$")
- SET(MACRO_CHECK_LIBRARY_EXISTS_DEFINITION
- "-DCHECK_SHARED_FUNCTION_EXISTS=${FUNCTION} ${CMAKE_REQUIRED_FLAGS}")
- IF(WIN32)
- IF(${ARGCOUNT} GREATER 0)
- SET(ARGSTACK "void*")
- SET(CALLSTACK "NULL")
- SET(CURARG 1)
- WHILE(${ARGCOUNT} GREATER ${CURARG})
- SET(ARGSTACK "${ARGSTACK},void*")
- SET(CALLSTACK "${CALLSTACK},NULL")
- MATH(EXPR CURARG "${CURARG} + 1")
- ENDWHILE(${ARGCOUNT} GREATER ${CURARG})
- SET(MACRO_CHECK_LIBRARY_EXISTS_DEFINITION
- "-D_WIN32 -DARGSTACK=\"${ARGSTACK}\" -DCALLSTACK=\"${CALLSTACK}\" ${MACRO_CHECK_LIBRARY_EXISTS_DEFINITION}")
- ELSE(${ARGCOUNT} GREATER 0)
- SET(MACRO_CHECK_LIBRARY_EXISTS_DEFINITION
- "-D_WIN32 ${MACRO_CHECK_LIBRARY_EXISTS_DEFINITION}")
- ENDIF(${ARGCOUNT} GREATER 0)
- ENDIF(WIN32)
- MESSAGE(STATUS "Looking for ${FUNCTION} in ${LIBRARY}")
- SET(CHECK_LIBRARY_EXISTS_LIBRARIES ${LIBRARY})
- IF(CMAKE_REQUIRED_LIBRARIES)
- SET(CHECK_LIBRARY_EXISTS_LIBRARIES
- ${CHECK_LIBRARY_EXISTS_LIBRARIES} ${CMAKE_REQUIRED_LIBRARIES})
- ENDIF(CMAKE_REQUIRED_LIBRARIES)
- TRY_COMPILE(${VARIABLE}
- ${CMAKE_BINARY_DIR}
- ${CMAKE_SOURCE_DIR}/cmake/CheckSharedFunctionExists.c
- COMPILE_DEFINITIONS ${CMAKE_REQUIRED_DEFINITIONS}
- CMAKE_FLAGS
- -DCOMPILE_DEFINITIONS:STRING=${MACRO_CHECK_LIBRARY_EXISTS_DEFINITION}
- -DLINK_DIRECTORIES:STRING=${LOCATION}
- "-DLINK_LIBRARIES:STRING=${CHECK_LIBRARY_EXISTS_LIBRARIES}"
- OUTPUT_VARIABLE OUTPUT)
-
- IF(${VARIABLE})
- MESSAGE(STATUS "Looking for ${FUNCTION} in ${LIBRARY} - found")
- SET(${VARIABLE} 1 CACHE INTERNAL "Have library ${LIBRARY}")
- FILE(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeOutput.log
- "Determining if the function ${FUNCTION} exists in the ${LIBRARY} "
- "passed with the following output:\n"
- "${OUTPUT}\n\n")
- ELSE(${VARIABLE})
- MESSAGE(STATUS "Looking for ${FUNCTION} in ${LIBRARY} - not found")
- SET(${VARIABLE} "" CACHE INTERNAL "Have library ${LIBRARY}")
- FILE(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeError.log
- "Determining if the function ${FUNCTION} exists in the ${LIBRARY} "
- "failed with the following output:\n"
- "${OUTPUT}\n\n")
- ENDIF(${VARIABLE})
- ENDIF("${VARIABLE}" MATCHES "^${VARIABLE}$")
-ENDMACRO(CHECK_SHARED_LIBRARY_EXISTS)