monero-gui/cmake/CheckLinkerFlag.cmake
TheCharlatan 8dd2a20ff8 Migrate build system to cmake
The content in this commit is not split in order to preserve working
compilation. Once this is added to master, the old build script will no
longer work and all existing build toolings will require changes.

Monero's cmake directory's files need to be copied to this project's cmake
directory in order for the linking and function definitions to work correctly.

Monero-gui has its own version check and generate file in order to not
conflict with monero's destination version files.

Most of the source files that are currently in monero-gui's root
directory are now moved to subdirectories. This is done to preserve
compilation order properly and to give some content structure.

The original CMakeList file included all headers it found in
subdirectories. Make sure that they are set manually to evade linking
errors.

The current build script always checks out latest master of the monero
submodule. The submodule rules in the current CMakeLists.txt file do not
enforce. An override to compile master nevertheless can still be given
with `-D DEV_MODE`.

To enable the linux X11 xcb linking the libraries had to be hardcoded. There
does not seem to be good support for this in pkgconfig, or in
existing cmake checks.
2019-11-27 22:59:27 +01:00

47 lines
1.5 KiB
CMake

include(CheckCCompilerFlag)
macro(CHECK_LINKER_FLAG flag VARIABLE)
if(NOT DEFINED "${VARIABLE}")
if(NOT CMAKE_REQUIRED_QUIET)
message(STATUS "Looking for ${flag} linker flag")
endif()
set(_cle_source ${CMAKE_SOURCE_DIR}/cmake/CheckLinkerFlag.c)
set(saved_CMAKE_C_FLAGS ${CMAKE_C_FLAGS})
set(CMAKE_C_FLAGS "${flag}")
try_compile(${VARIABLE}
${CMAKE_BINARY_DIR}
${_cle_source}
COMPILE_DEFINITIONS ${CMAKE_REQUIRED_DEFINITIONS} ${flag}
CMAKE_FLAGS
OUTPUT_VARIABLE OUTPUT)
unset(_cle_source)
set(CMAKE_C_FLAGS ${saved_CMAKE_C_FLAGS})
unset(saved_CMAKE_C_FLAGS)
if ("${OUTPUT}" MATCHES "warning.*ignored")
set(${VARIABLE} 0)
endif()
if(${VARIABLE})
if(NOT CMAKE_REQUIRED_QUIET)
message(STATUS "Looking for ${flag} linker flag - found")
endif()
set(${VARIABLE} 1 CACHE INTERNAL "Have linker flag ${flag}")
file(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeOutput.log
"Determining if the ${flag} linker flag is supported "
"passed with the following output:\n"
"${OUTPUT}\n\n")
else()
if(NOT CMAKE_REQUIRED_QUIET)
message(STATUS "Looking for ${flag} linker flag - not found")
endif()
set(${VARIABLE} "" CACHE INTERNAL "Have linker flag ${flag}")
file(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeError.log
"Determining if the ${flag} linker flag is supported "
"failed with the following output:\n"
"${OUTPUT}\n\n")
endif()
endif()
endmacro()