refactor(cmake): split CMakeLists into modules (#1587)

cmake/macros/common.cmake

@@ -0,0 +1,15 @@
+# common macros
+# this file will also load platform specific macros
+
+# platform specific macros
+if(WIN32)
+    include(${CMAKE_MODULE_PATH}/macros/windows.cmake)
+elseif(UNIX)
+    include(${CMAKE_MODULE_PATH}/macros/unix.cmake)
+
+    if(APPLE)
+        include(${CMAKE_MODULE_PATH}/macros/macos.cmake)
+    else()
+        include(${CMAKE_MODULE_PATH}/macros/linux.cmake)
+    endif()
+endif()

cmake/macros/linux.cmake

@@ -0,0 +1,31 @@
+# linux specific macros
+
+# GEN_WAYLAND: args = `filename`
+macro(GEN_WAYLAND filename)
+    file(MAKE_DIRECTORY ${CMAKE_BINARY_DIR}/generated-src)
+
+    message("wayland-scanner private-code \
+${CMAKE_SOURCE_DIR}/third-party/wayland-protocols/${filename}.xml \
+${CMAKE_BINARY_DIR}/generated-src/${filename}.c")
+    message("wayland-scanner client-header \
+${CMAKE_SOURCE_DIR}/third-party/wayland-protocols/${filename}.xml \
+${CMAKE_BINARY_DIR}/generated-src/${filename}.h")
+    execute_process(
+            COMMAND wayland-scanner private-code
+            ${CMAKE_SOURCE_DIR}/third-party/wayland-protocols/${filename}.xml
+            ${CMAKE_BINARY_DIR}/generated-src/${filename}.c
+            COMMAND wayland-scanner client-header
+            ${CMAKE_SOURCE_DIR}/third-party/wayland-protocols/${filename}.xml
+            ${CMAKE_BINARY_DIR}/generated-src/${filename}.h
+
+            RESULT_VARIABLE EXIT_INT
+    )
+
+    if(NOT ${EXIT_INT} EQUAL 0)
+        message(FATAL_ERROR "wayland-scanner failed")
+    endif()
+
+    list(APPEND PLATFORM_TARGET_FILES
+            ${CMAKE_BINARY_DIR}/generated-src/${filename}.c
+            ${CMAKE_BINARY_DIR}/generated-src/${filename}.h)
+endmacro()

cmake/macros/macos.cmake

@@ -0,0 +1,16 @@
+# macos specific macros
+
+# ADD_FRAMEWORK: args = `fwname`, `appname`
+macro(ADD_FRAMEWORK fwname appname)
+    find_library(FRAMEWORK_${fwname}
+            NAMES ${fwname}
+            PATHS ${CMAKE_OSX_SYSROOT}/System/Library
+            PATH_SUFFIXES Frameworks
+            NO_DEFAULT_PATH)
+    if( ${FRAMEWORK_${fwname}} STREQUAL FRAMEWORK_${fwname}-NOTFOUND)
+        MESSAGE(ERROR ": Framework ${fwname} not found")
+    else()
+        TARGET_LINK_LIBRARIES(${appname} "${FRAMEWORK_${fwname}}/${fwname}")
+        MESSAGE(STATUS "Framework ${fwname} found at ${FRAMEWORK_${fwname}}")
+    endif()
+endmacro(ADD_FRAMEWORK)

cmake/macros/unix.cmake

@@ -0,0 +1,2 @@
+# unix specific macros
+# put anything here that applies to both linux and macos

cmake/macros/windows.cmake

@@ -0,0 +1 @@
+# windows specific macros