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# Copyright 2012 Intel Corporation
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
project(waffle C)
set(waffle_version 0.0)
cmake_minimum_required(VERSION 2.8)
# ------------------------------------------------------------------------------
# Find Libraries
# ------------------------------------------------------------------------------
function(waffle_find_library var name)
find_library("${var}" "${name}")
if("${var}")
message(STATUS "Library ${name} found: ${${var}}")
else("${var}")
message(STATUS "Library ${name} not found")
endif("${var}")
endfunction(waffle_find_library)
if(CMAKE_SYSTEM_NAME STREQUAL "Linux")
waffle_find_library(waffle_EGL_library EGL)
waffle_find_library(waffle_X11-xcb_library X11-xcb)
endif(CMAKE_SYSTEM_NAME STREQUAL "Linux")
# ------------------------------------------------------------------------------
# Waffle Options
# ------------------------------------------------------------------------------
# All options here are prefixed with `waffle_`. Most options are cache
# variables set by the user.
# ----------------------------------------------
# Set waffle options
# ----------------------------------------------
option(waffle_build_tests "Build tests" ON)
option(waffle_build_examples "Build examples" ON)
#
# Set waffle_default_platform.
#
if(CMAKE_SYSTEM_NAME STREQUAL "Linux")
set(waffle_default_platform_choices "x11_egl (just one choice for now)")
set(waffle_default_platform_regex "x11_egl")
set(waffle_default_platform "NOTFOUND"
CACHE STRING "One of ${waffle_default_platform_choices}")
endif(CMAKE_SYSTEM_NAME STREQUAL "Linux")
#
# Set waffle_default_gl_api.
#
set(waffle_default_gl_api_choices "gl, gles1, gles2")
set(waffle_default_gl_api_regex "gl|gles1|gles2")
set(waffle_default_gl_api "NOTFOUND"
CACHE STRING "One of ${waffle_default_gl_api_choices}")
#
# Set waffle_has_{platform}.
#
if(CMAKE_SYSTEM_NAME STREQUAL "Linux")
# Set waffle_has_x11_egl.
set(waffle_has_x11_egl_default OFF)
if(waffle_EGL_library AND waffle_X11-xcb_library)
set(waffle_has_x11_egl_default ON)
endif(waffle_EGL_library AND waffle_X11-xcb_library)
option(waffle_has_x11_egl
"Build support for X11/EGL"
${waffle_has_x11_egl_default})
endif(CMAKE_SYSTEM_NAME STREQUAL "Linux")
#
# Set internal option waffle_has_egl.
#
if(waffle_has_x11_egl)
set(waffle_has_egl TRUE)
else(waffle_has_x11_egl)
set(waffle_has_egl FALSE)
endif(waffle_has_x11_egl)
#
# Set internal option waffle_has_x11.
#
if(waffle_has_x11_egl)
set(waffle_has_x11 TRUE)
else(waffle_has_x11_egl)
set(waffle_has_x11 FALSE)
endif(waffle_has_x11_egl)
# ----------------------------------------------
# Validate waffle options
# ----------------------------------------------
#
# Validate waffle_default_platform.
#
if(NOT DEFINED waffle_default_platform)
message(FATAL_ERROR "Option waffle_default_platform is not defined. Must be one of ${waffle_default_platform_choices}.")
endif(NOT DEFINED waffle_default_platform)
if(NOT waffle_default_platform MATCHES ${waffle_default_platform_regex})
message(FATAL_ERROR "Option waffle_default_platform has bad value '${waffle_default_platform}'. Must be one of ${waffle_default_platform_choices}.")
endif(NOT waffle_default_platform MATCHES ${waffle_default_platform_regex})
#
# Validate waffle_default_gl_api.
#
if(NOT DEFINED waffle_default_gl_api)
message(FATAL_ERROR "Option waffle_default_gl_api is not defined. Must be one of ${waffle_default_gl_api_choices}.")
endif(NOT DEFINED waffle_default_gl_api)
if(NOT waffle_default_gl_api MATCHES ${waffle_default_gl_api_regex})
message(FATAL_ERROR "Option waffle_default_gl_api has bad value '${waffle_default_gl_api}'. Must be one of ${waffle_default_gl_api_choices}.")
endif(NOT waffle_default_gl_api MATCHES ${waffle_default_gl_api_regex})
# ------------------------------------------------------------------------------
# Compiler Flags
# ------------------------------------------------------------------------------
# FIXME: Only enable c99 if compiler supports it.
set(CMAKE_C_FLAGS "--std=c99 -Wall -Werror")
set(CMAKE_C_FLAGS_DEBUG "-g3 -O0 -DDEBUG")
# Produce enough debug info for generating backtraces, but not
# single-stepping.
set(CMAKE_C_FLAGS_RELEASE "-g1 -02 -DNDEBUG")
#
# Define WAFFLE_PLATFORM_DEFAULT.
#
if(waffle_default_platform STREQUAL "glx")
add_definitions(-DWAFFLE_PLATFORM_DEFAULT=WAFFLE_PLATFORM_GLX)
elseif(waffle_default_platform STREQUAL "wayland")
add_definitions(-DWAFFLE_PLATFORM_DEFAULT=WAFFLE_PLATFORM_WAYLAND)
elseif(waffle_default_platform STREQUAL "x11_egl")
add_definitions(-DWAFFLE_PLATFORM_DEFAULT=WAFFLE_PLATFORM_X11_EGL)
endif(waffle_default_platform STREQUAL "glx")
#
# Define macro WAFFLE_GL_API_DEFAULT.
#
if(waffle_default_gl_api STREQUAL "gl")
add_definitions(-DWAFFLE_GL_API_DEFAULT=WAFFLE_GL)
elseif(waffle_default_gl_api STREQUAL "gles1")
add_definitions(-DWAFFLE_GL_API_DEFAULT=WAFFLE_GLES1)
elseif(waffle_default_gl_api STREQUAL "gles2")
add_definitions(-DWAFFLE_GL_API_DEFAULT=WAFFLE_GLES2)
endif(waffle_default_gl_api STREQUAL "gl")
#
# Define macros WAFFLE_HAS_{PLATFORM}.
#
# Android is not in this list because it uses a separate build system.
#
if(waffle_has_x11_egl)
add_definitions(-DWAFFLE_HAS_X11_EGL)
endif(waffle_has_x11_egl)
# ------------------------------------------------------------------------------
# Target: check
# ------------------------------------------------------------------------------
if(waffle_build_tests)
# Subdirectories should add dependencies.
add_custom_target(check)
endif(waffle_build_tests)
# ------------------------------------------------------------------------------
# Add subdirectories
# ------------------------------------------------------------------------------
include_directories(include src)
add_subdirectory(src)
if(waffle_build_tests)
add_subdirectory(tests)
endif(waffle_build_tests)
if(waffle_build_examples)
add_subdirectory(examples)
endif(waffle_build_examples)
# ------------------------------------------------------------------------------
# Print summary
# ------------------------------------------------------------------------------
# CMake is annoyingly silent compared to autoconf. The user wants to know what
# was configured how.
message("-----------------------------------------------")
message("")
message("Waffle configuration summary")
message("")
message("Supported platforms: ")
if(waffle_has_x11_egl)
message(" x11_egl")
endif(waffle_has_x11_egl)
message("")
message("Libraries:")
if(DEFINED waffle_EGL_library)
message(" EGL: ${waffle_EGL_library}")
endif(DEFINED waffle_EGL_library)
if(DEFINED waffle_X11-xcb_library)
message(" X11-xcb: ${waffle_X11-xcb_library}")
endif(DEFINED waffle_X11-xcb_library)
message("")
message("Defaults:")
message(" default platform: ${waffle_default_platform}")
message(" default GL API: ${waffle_default_gl_api}")
message("")
message("Build type:")
message(" ${CMAKE_BUILD_TYPE}")
message("")
message("Tools:")
message(" cc: ${CMAKE_C_COMPILER}")
message(" CFLAGS_base: ${CMAKE_C_FLAGS}")
message(" CFLAGS_debug: ${CMAKE_C_FLAGS_DEBUG}")
message(" CFLAGS_release: ${CMAKE_C_FLAGS_RELEASE}")
message("-----------------------------------------------")
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