File: helpers.cmake

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if(__cmake_helpers_included)
	return()
endif()
set(__cmake_helpers_included YES)

# check for list of headers, ;-separated. For every existing header.h
# the HAVE_HEADER_H became defined as 1
include (CheckIncludeFile)
macro (ac_check_headers _HEADERS)
	foreach (it ${_HEADERS})
		string(REGEX REPLACE "[/.]" "_" _it "${it}")
		string(TOUPPER "${_it}" _it)
		check_include_file ("${it}" "HAVE_${_it}")
	endforeach (it)
endmacro(ac_check_headers)

# check for list of functions, ;-separated. For every existing
# function the HAVE_FUNCION became defined as 1
include (CheckFunctionExists)
macro (ac_check_funcs _FUNCTIONS)
	foreach (it ${_FUNCTIONS})
		string(TOUPPER "${it}" _it)
		check_function_exists ("${it}" "HAVE_${_it}")
	endforeach(it)
endmacro(ac_check_funcs)

# remove cr lf from input string
#macro (remove_crlf _SOURCE _DESTINATION)
#	string(REGEX REPLACE "\n" "" _DESTINATION "${_SOURCE}")
#endmacro(remove_crlf)

# AWI, downloaded from KDE repository since has not yet been transferred
# to cmake repository as of 2006-07-31.
# http://websvn.kde.org/trunk/KDE/kdelibs/cmake/modules/CheckPrototypeExists.cmake?rev=505849&view=markup
#
# - Check if the prototype for a function exists.
# CHECK_PROTOTYPE_EXISTS (FUNCTION HEADER VARIABLE)
#
# FUNCTION - the name of the function you are looking for
# HEADER - the header(s) where the prototype should be declared
# VARIABLE - variable to store the result
#

include(CheckCXXSourceCompiles)
macro(check_prototype_exists _SYMBOL _HEADER _RESULT)
	set(_INCLUDE_FILES)
	foreach(it ${_HEADER})
		set(_INCLUDE_FILES "${_INCLUDE_FILES}#include <${it}>\n")
	endforeach(it)

	set(_CHECK_PROTO_EXISTS_SOURCE_CODE "
${_INCLUDE_FILES}
void cmakeRequireSymbol(int dummy,...){(void)dummy;}
int main()
{
#ifndef ${_SYMBOL}
#ifndef _MSC_VER
cmakeRequireSymbol(0,&${_SYMBOL});
#else
char i = sizeof(&${_SYMBOL});
#endif
#endif
return 0;
}
")
	CHECK_CXX_SOURCE_COMPILES("${_CHECK_PROTO_EXISTS_SOURCE_CODE}" ${_RESULT})
endmacro(check_prototype_exists _SYMBOL _HEADER _RESULT)

# - Check if the DIR symbol exists like in AC_HEADER_DIRENT.
# CHECK_DIRSYMBOL_EXISTS(FILES VARIABLE)
#
# FILES - include files to check
# VARIABLE - variable to return result
#
# This module is a small but important variation on CheckSymbolExists.cmake.
# The symbol always searched for is DIR, and the test programme follows
# the AC_HEADER_DIRENT test programme rather than the CheckSymbolExists.cmake
# test programme which always fails since DIR tends to be typedef'd
# rather than #define'd.
#
# 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(CHECK_DIRSYMBOL_EXISTS FILES VARIABLE)
	IF(NOT DEFINED ${VARIABLE})
		SET(CMAKE_CONFIGURABLE_FILE_CONTENT "/* */\n")
		SET(MACRO_CHECK_DIRSYMBOL_EXISTS_FLAGS ${CMAKE_REQUIRED_FLAGS})
		IF(CMAKE_REQUIRED_LIBRARIES)
			SET(CHECK_DIRSYMBOL_EXISTS_LIBS
				"-DLINK_LIBRARIES:STRING=${CMAKE_REQUIRED_LIBRARIES}")
		ELSE(CMAKE_REQUIRED_LIBRARIES)
			SET(CHECK_DIRSYMBOL_EXISTS_LIBS)
		ENDIF(CMAKE_REQUIRED_LIBRARIES)
		IF(CMAKE_REQUIRED_INCLUDES)
			SET(CMAKE_DIRSYMBOL_EXISTS_INCLUDES
				"-DINCLUDE_DIRECTORIES:STRING=${CMAKE_REQUIRED_INCLUDES}")
		ELSE(CMAKE_REQUIRED_INCLUDES)
			SET(CMAKE_DIRSYMBOL_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}\nint main()\n{if ((DIR *) 0) return 0;}\n")

		CONFIGURE_FILE("${CMAKE_ROOT}/Modules/CMakeConfigurableFile.in"
			"${CMAKE_BINARY_DIR}/CMakeFiles/CMakeTmp/CheckDIRSymbolExists.c" @ONLY)

		MESSAGE(STATUS "Looking for DIR in ${FILES}")
		TRY_COMPILE(${VARIABLE}
			${CMAKE_BINARY_DIR}
			${CMAKE_BINARY_DIR}/CMakeFiles/CMakeTmp/CheckDIRSymbolExists.c
			COMPILE_DEFINITIONS ${CMAKE_REQUIRED_DEFINITIONS}
			CMAKE_FLAGS
			-DCOMPILE_DEFINITIONS:STRING=${MACRO_CHECK_DIRSYMBOL_EXISTS_FLAGS}
			"${CHECK_DIRSYMBOL_EXISTS_LIBS}"
			"${CMAKE_DIRSYMBOL_EXISTS_INCLUDES}"
			OUTPUT_VARIABLE OUTPUT)
		IF(${VARIABLE})
			MESSAGE(STATUS "Looking for DIR in ${FILES} - found")
			SET(${VARIABLE} 1 CACHE INTERNAL "Have symbol DIR")
			FILE(APPEND ${CMAKE_BINARY_DIR}/CMakeFiles/CMakeOutput.log
				"Determining if the DIR symbol is defined as in AC_HEADER_DIRENT "
				"passed with the following output:\n"
				"${OUTPUT}\nFile ${CMAKE_BINARY_DIR}/CMakeFiles/CMakeTmp/CheckDIRSymbolExists.c:\n"
				"${CMAKE_CONFIGURABLE_FILE_CONTENT}\n")
		ELSE(${VARIABLE})
			MESSAGE(STATUS "Looking for DIR in ${FILES} - not found.")
			SET(${VARIABLE} "" CACHE INTERNAL "Have symbol DIR")
			FILE(APPEND ${CMAKE_BINARY_DIR}/CMakeFiles/CMakeError.log
				"Determining if the DIR symbol is defined as in AC_HEADER_DIRENT "
				"failed with the following output:\n"
				"${OUTPUT}\nFile ${CMAKE_BINARY_DIR}/CMakeFiles/CMakeTmp/CheckDIRSymbolExists.c:\n"
				"${CMAKE_CONFIGURABLE_FILE_CONTENT}\n")
		ENDIF(${VARIABLE})
	ENDIF(NOT DEFINED ${VARIABLE})
ENDMACRO(CHECK_DIRSYMBOL_EXISTS)


include(CheckLibraryExists)
macro( AC_SEARCH_LIBS LIB_REQUIRED FUNCTION_NAME TARGET_VAR LIB_DIR)
# check if we can use FUNCTION_NAME first.
# if possible without extra libs - ok. If no - try to use LIB_REQUIRED list.
# finally define TARGET_VAR as 1 if found, and also append found (if necessary) library path to LIB_DIR
#if(${LIB_REQUIRED})
	string(TOUPPER "${FUNCTION_NAME}" _upcase_name)
	check_function_exists ("${FUNCTION_NAME}" "HAVE_${_upcase_name}")
	if (HAVE_${_upcase_name} )
		set (${TARGET_VAR} 1 )
	else (HAVE_${_upcase_name})
	foreach( LIB ${LIB_REQUIRED} )
		UNSET(_LIB_PATH CACHE)
			find_library(_LIB_PATH ${LIB})
			UNSET (_LIB_FUNCTION_FOUND CACHE)
			check_library_exists(${LIB} ${FUNCTION_NAME} ${_LIB_PATH} _LIB_FUNCTION_FOUND )
			if( ${_LIB_FUNCTION_FOUND} )
				set(${TARGET_VAR} 1)
				set (${LIB_DIR} "${${LIB_DIR}};${_LIB_PATH}")
				break()
			endif()
		endforeach( LIB )
		UNSET(_LIB_PATH CACHE)
	endif()
#endif(${LIB_REQUIRED})
endmacro()


macro(REMOVE_CRLF RETVAL INSTR)
	if (NOT INSTR EQUAL "")
		string(REGEX REPLACE "\n" "" ${RETVAL} ${INSTR})
	endif()
#	set(${RETVAL} "${RETVAL}" PARENT_SCOPE)
endmacro()

# check if PACKAGE is available.
# if so, add the option to use or don't use the package.
# if the option set, set OUTVAR to 1, append the lib path to LIB_DIR, include directories
include (CMakeDependentOption)
macro(OPTION_MENU PACKAGE PROMPT OUTVAR LIB_DIR)
	find_package (${PACKAGE} QUIET)
	CMAKE_DEPENDENT_OPTION (WITH_${PACKAGE} "${PROMPT}" ON "${PACKAGE}_FOUND" OFF)
	IF (WITH_${PACKAGE})
		set (${OUTVAR} 1)
		if (${PACKAGE}_LIBRARIES)
			list (APPEND ${LIB_DIR} ${${PACKAGE}_LIBRARIES})
		endif (${PACKAGE}_LIBRARIES)
		include_directories (${${PACKAGE}_INCLUDE_DIRS})
	ENDIF (WITH_${PACKAGE})
endmacro()

# add debug symbols to the target
function (INSTALL_DBG BINARYNAME)
	if (MSVC)
		# windows case. The pdbs are located in bin/config/*.pdb
		set (PDB_PATH "${CMAKE_CURRENT_BINARY_DIR}/\${CMAKE_INSTALL_CONFIG_NAME}")
		INSTALL (FILES ${PDB_PATH}/${BINARYNAME}.pdb DESTINATION debug COMPONENT DBGSYMBOLS)
	elseif (APPLE)
		# Mac OS case. We have to explicitly extract dSYM and then strip the binary
		if (NOT DEFINED CMAKE_DSYMUTIL)
			find_program (CMAKE_DSYMUTIL dsymutil)
		endif ()
		if (NOT DEFINED CMAKE_DSYMUTIL)
			message (SEND_ERROR "Missed objcopy prog. Can't split symbols!")
			unset (SPLIT_SYMBOLS CACHE)
		endif ()
		mark_as_advanced (CMAKE_DSYMUTIL)

		ADD_CUSTOM_COMMAND (TARGET ${BINARYNAME} POST_BUILD
				COMMAND ${CMAKE_DSYMUTIL} -f $<TARGET_FILE:${BINARYNAME}> -o $<TARGET_FILE:${BINARYNAME}>.dSYM
				COMMAND strip -S $<TARGET_FILE:${BINARYNAME}>
		)
		INSTALL (FILES ${SPHINXSEARCH_BINARY_DIR}/src/${BINARYNAME}.dSYM
				DESTINATION lib/debug/usr/bin COMPONENT DBGSYMBOLS)
	else()
		# non-windows case. For linux - use objcopy to make 'clean' and 'debug' binaries
		if (NOT DEFINED CMAKE_OBJCOPY)
			find_package (BinUtils QUIET)
		endif ()
		if (NOT DEFINED CMAKE_OBJCOPY)
			find_program (CMAKE_OBJCOPY objcopy)
		endif ()
		if (NOT DEFINED CMAKE_OBJCOPY)
			message (SEND_ERROR "Missed objcopy prog. Can't split symbols!")
			unset (SPLIT_SYMBOLS CACHE)
		endif (NOT DEFINED CMAKE_OBJCOPY)
		mark_as_advanced (CMAKE_OBJCOPY)
		mark_as_advanced (BinUtils_DIR)

		ADD_CUSTOM_COMMAND (TARGET ${BINARYNAME} POST_BUILD
				COMMAND ${CMAKE_OBJCOPY} --only-keep-debug $<TARGET_FILE:${BINARYNAME}> $<TARGET_FILE:${BINARYNAME}>.dbg
				COMMAND ${CMAKE_OBJCOPY} --strip-debug $<TARGET_FILE:${BINARYNAME}>
				COMMAND ${CMAKE_OBJCOPY} --add-gnu-debuglink=$<TARGET_FILE:${BINARYNAME}>.dbg $<TARGET_FILE:${BINARYNAME}>
		)
		INSTALL (FILES ${SPHINXSEARCH_BINARY_DIR}/src/${BINARYNAME}.dbg
				DESTINATION lib/debug/usr/bin COMPONENT DBGSYMBOLS RENAME ${BINARYNAME})
	endif ()
endfunction()