mirror of
https://port.numenaute.org/aleajactaest/khanat-opennel-code.git
synced 2024-12-15 14:08:42 +00:00
103 lines
3.8 KiB
CMake
103 lines
3.8 KiB
CMake
# Macros to check if a library needs to be manually linked to another one
|
|
# because it's using a symbol from it but it's not linked to
|
|
#
|
|
# Syntax:
|
|
# CHECK_DEPENDS(MYLIBRARY OTHERLIBRARY SYMBOL MUSTLINK)
|
|
#
|
|
# Sets the following variables:
|
|
# XYZ_LIBRARY_MUSTLINK
|
|
#
|
|
# Example:
|
|
# Check if we need to explicitly link to libz with libpng
|
|
# CHECK_DEPENDS(PNG_LIBRARY ZLIB_LIBRARY inflate)
|
|
# objdump -p /usr/lib/libwwwxml.so | grep expat
|
|
# objdump -T /usr/lib/libwwwxml.so | grep "*UND*" | grep XML_ParserCreate
|
|
# objdump -p <lib> | grep <libray>
|
|
# objdump -T <lib> | grep "*UND*" | grep <function>
|
|
#
|
|
|
|
# CHECK_UNDEFINED_SYMBOL
|
|
# Macro to check if a library is calling an undefined symbol
|
|
#
|
|
# Syntax:
|
|
# CHECK_UNDEFINED_SYMBOL(MYLIBRARY SYMBOL SYMBOL_FOUND)
|
|
# SYMBOL_FOUND will be set to TRUE or FALSE
|
|
#
|
|
# Example:
|
|
# CHECK_UNDEFINED_SYMBOL(PNG_LIBRARY inflate INFLATE_FOUND)
|
|
#
|
|
MACRO(CHECK_UNDEFINED_SYMBOL MYLIBRARY SYMBOL SYMBOL_FOUND)
|
|
SET(${SYMBOL_FOUND} TRUE)
|
|
IF(WIN32)
|
|
# Always TRUE under Windows because we are using static libraries
|
|
ELSEIF(APPLE)
|
|
# TODO: use otool to detect if a library is using a symbol
|
|
ELSEIF(UNIX)
|
|
IF(CMAKE_OBJDUMP)
|
|
# Use objdump to check if a library is using an external symbol
|
|
EXEC_PROGRAM(${CMAKE_OBJDUMP} ARGS "-T ${MYLIBRARY} | grep ${SYMBOL}" OUTPUT_VARIABLE OBJDUMP_SYMBOL)
|
|
message(STATUS "OBJDUMP_SYMBOL = ${OBJDUMP_SYMBOL}")
|
|
IF(NOT OBJDUMP_SYMBOL MATCHES "UND")
|
|
SET(${SYMBOL_FOUND} FALSE)
|
|
ENDIF(OBJDUMP_SYMBOL MATCHES "UND")
|
|
ENDIF(CMAKE_OBJDUMP)
|
|
ENDIF(WIN32)
|
|
ENDMACRO(CHECK_UNDEFINED_SYMBOL)
|
|
|
|
MACRO(CHECK_LINKED_LIBRARY MYLIBRARY OTHERLIBRARY LIBRARY_FOUND)
|
|
SET(${LIBRARY_FOUND} FALSE)
|
|
IF(WIN32)
|
|
# Always FALSE under Windows because we are using static libraries
|
|
ELSEIF(APPLE)
|
|
# TODO: use otool to detect if a library is using a symbol
|
|
ELSEIF(UNIX)
|
|
IF(CMAKE_OBJDUMP)
|
|
# Use objdump to check if a library is linked to another library
|
|
EXEC_PROGRAM(${CMAKE_OBJDUMP} ARGS "-p ${MYLIBRARY} | grep ${OTHERLIBRARY}" OUTPUT_VARIABLE OBJDUMP_LIBRARY)
|
|
IF(OBJDUMP_LIBRARY MATCHES "NEEDED")
|
|
SET(${LIBRARY_FOUND} TRUE)
|
|
ENDIF(OBJDUMP_LIBRARY MATCHES "NEEDED")
|
|
ENDIF(CMAKE_OBJDUMP)
|
|
ENDIF(WIN32)
|
|
ENDMACRO(CHECK_LINKED_LIBRARY)
|
|
|
|
MACRO(CHECK_DEPENDS MYLIBRARY OTHERLIBRARY SYMBOL MUSTLINK)
|
|
CHECK_UNDEFINED_SYMBOL(MYLIBRARY SYMBOL SYMBOL_FOUND)
|
|
|
|
IF(SYMBOL_FOUND)
|
|
CHECK_LINKED_LIBRARY(MYLIBRARY OTHERLIBRARY LIBRARY_FOUND)
|
|
ENDIF(SYMBOL_FOUND)
|
|
|
|
IF(SYMBOL_FOUND AND NOT LIBRARY_FOUND)
|
|
SET(${MUSTLINK} YES)
|
|
ELSE(SYMBOL_FOUND AND NOT LIBRARY_FOUND)
|
|
SET(${MUSTLINK} NO)
|
|
ENDIF(SYMBOL_FOUND AND NOT LIBRARY_FOUND)
|
|
ENDMACRO(CHECK_DEPENDS)
|
|
|
|
MACRO(LINK_DEPENDS LIBRARIES MYLIBRARY OTHERLIBRARY SYMBOL)
|
|
SET(MUST_LINK FALSE)
|
|
IF(${MYLIBRARY} AND ${OTHERLIBRARY} AND NOT ${OTHERLIBRARY}_LINKED)
|
|
IF(WIN32 OR WITH_STATIC)
|
|
# In static, we link all libraries because it will keep only used symbols
|
|
SET(MUST_LINK TRUE)
|
|
ELSE(WIN32 OR WITH_STATIC)
|
|
CHECK_UNDEFINED_SYMBOL(${MYLIBRARY} ${SYMBOL} SYMBOL_FOUND)
|
|
|
|
IF(SYMBOL_FOUND)
|
|
CHECK_LINKED_LIBRARY(${MYLIBRARY} ${OTHERLIBRARY} LIBRARY_FOUND)
|
|
ENDIF(SYMBOL_FOUND)
|
|
|
|
# CHECK_DEPENDS(${MYLIBRARY} ${${OTHERLIBRARY}} ${SYMBOL} MUST_LINK)
|
|
IF(SYMBOL_FOUND AND NOT LIBRARY_FOUND)
|
|
MESSAGE(STATUS "Underlinking found: ${${MYLIBRARY}} needs ${${OTHERLIBRARY}} but is not linked to, manually linking...")
|
|
SET(MUST_LINK TRUE)
|
|
ENDIF(SYMBOL_FOUND AND NOT LIBRARY_FOUND)
|
|
ENDIF(WIN32 OR WITH_STATIC)
|
|
ENDIF(${MYLIBRARY} AND ${OTHERLIBRARY} AND NOT ${OTHERLIBRARY}_LINKED)
|
|
IF(MUST_LINK)
|
|
MESSAGE(STATUS "Linking with ${${OTHERLIBRARY}}")
|
|
SET(${OTHERLIBRARY}_LINKED TRUE)
|
|
SET(${LIBRARIES} ${${LIBRARIES}} ${${OTHERLIBRARY}})
|
|
ENDIF(MUST_LINK)
|
|
ENDMACRO(LINK_DEPENDS)
|