Reorganization between variables/build options

Move compilation/link option to build options and all custom
variables stuff in variable file. Make build options as first
file to be included then all custom stuff.

Change-Id: I530268574745edcc414e29cac59eb542954d73cc
Signed-off-by: Romain Forlot <romain.forlot@iot.bzh>

1 files changed, 113 insertions, 0 deletions

diff --git a/cmake/cmake.d/01-build_options.cmake b/cmake/cmake.d/01-build_options.cmake
new file mode 100644
index 0000000..246d650
--- /dev/null
+++ b/cmake/cmake.d/01-build_options.cmake
@@ -0,0 +1,113 @@
+###########################################################################
+# Copyright 2015, 2016, 2017 IoT.bzh
+#
+# author: Fulup Ar Foll <fulup@iot.bzh>
+# contrib: Romain Forlot <romain.forlot@iot.bzh>
+#
+# 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.
+###########################################################################
+
+
+#--------------------------------------------------------------------------
+#  WARNING:
+#     Do not change this cmake template
+#     Customise your preferences in "./conf.d/cmake/config.cmake"
+#--------------------------------------------------------------------------
+
+# (BUG!!!) as PKG_CONFIG_PATH does not work [should be en env variable]
+set(PKG_CONFIG_USE_CMAKE_PREFIX_PATH ON CACHE BOOLEAN "Flag for using prefix path")
+
+INCLUDE(FindPkgConfig)
+INCLUDE(CheckIncludeFiles)
+INCLUDE(CheckLibraryExists)
+INCLUDE(GNUInstallDirs)
+
+set(CMAKE_BUILD_TYPE Debug CACHE STRING "the type of build")
+set(CMAKE_POSITION_INDEPENDENT_CODE ON)
+set(CMP0048 1)
+
+# Default compilation options
+############################################################################
+link_libraries(-Wl,--as-needed -Wl,--gc-sections)
+set(COMPILE_OPTIONS "-Wall" "-Wextra" "-Wconversion" "-Wno-unused-parameter" "-Wno-sign-compare" "-Wno-sign-conversion" "-Werror=maybe-uninitialized" "-Werror=implicit-function-declaration" "-ffunction-sections" "-fdata-sections" "-fPIC" CACHE STRING "Compilation flags")
+foreach(option ${COMPILE_OPTIONS})
+	add_compile_options($<$<CONFIG:PROFILING>:${option}>)
+endforeach()
+
+# Compilation OPTIONS depending on language
+#########################################
+foreach(option ${COMPILE_OPTIONS})
+	add_compile_options(${option})
+endforeach()
+foreach(option ${C_COMPILE_OPTIONS})
+	add_compile_options($<$<COMPILE_LANGUAGE:C>:${option}>)
+endforeach()
+foreach(option ${CXX_COMPILE_OPTIONS})
+	add_compile_options($<$<COMPILE_LANGUAGE:CXX>:${option}>)
+endforeach()
+
+# Compilation option depending on CMAKE_BUILD_TYPE
+##################################################
+set(PROFILING_COMPILE_OPTIONS "-g" "-O0" "-pg" "-Wp,-U_FORTIFY_SOURCE" CACHE STRING "Compilation flags for PROFILING build type.")
+set(DEBUG_COMPILE_OPTIONS "-g" "-ggdb" "-Wp,-U_FORTIFY_SOURCE" CACHE STRING "Compilation flags for DEBUG build type.")
+set(CCOV_COMPILE_OPTIONS "-g" "-O2" "--coverage" CACHE STRING "Compilation flags for CCOV build type.")
+set(RELEASE_COMPILE_OPTIONS "-g" "-O2" CACHE STRING "Compilation flags for RELEASE build type.")
+foreach(option ${PROFILING_COMPILE_OPTIONS})
+	add_compile_options($<$<CONFIG:PROFILING>:${option}>)
+endforeach()
+foreach(option ${DEBUG_COMPILE_OPTIONS})
+	add_compile_options($<$<CONFIG:PROFILING>:${option}>)
+endforeach()
+foreach(option ${CCOV_COMPILE_OPTIONS})
+	add_compile_options($<$<CONFIG:PROFILING>:${option}>)
+endforeach()
+foreach(option ${RELEASE_COMPILE_OPTIONS})
+	add_compile_options($<$<CONFIG:PROFILING>:${option}>)
+endforeach()
+
+# Env variable overload default
+if(DEFINED ENV{INSTALL_PREFIX})
+	set(INSTALL_PREFIX $ENV{INSTALL_PREFIX} CACHE PATH "The path where to install")
+else()
+	set(INSTALL_PREFIX "${CMAKE_SOURCE_DIR}/Install" CACHE PATH "The path where to install")
+endif()
+set(CMAKE_INSTALL_PREFIX ${INSTALL_PREFIX} CACHE STRING "Installation Prefix")
+
+# Loop on required package and add options
+foreach (PKG_CONFIG ${PKG_REQUIRED_LIST})
+	string(REGEX REPLACE "[<>]?=.*$" "" XPREFIX ${PKG_CONFIG})
+	PKG_CHECK_MODULES(${XPREFIX} REQUIRED ${PKG_CONFIG})
+
+	INCLUDE_DIRECTORIES(${${XPREFIX}_INCLUDE_DIRS})
+	list(APPEND link_libraries ${${XPREFIX}_LDFLAGS})
+	add_compile_options (${${XPREFIX}_CFLAGS})
+endforeach(PKG_CONFIG)
+
+# Optional LibEfence Malloc debug library
+IF(CMAKE_BUILD_TYPE MATCHES DEBUG)
+CHECK_LIBRARY_EXISTS(efence malloc "" HAVE_LIBEFENCE)
+IF(HAVE_LIBEFENCE)
+	MESSAGE(STATUS "Linking with ElectricFence for debugging purposes...")
+	SET(libefence_LIBRARIES "-lefence")
+	list (APPEND link_libraries ${libefence_LIBRARIES})
+ENDIF(HAVE_LIBEFENCE)
+ENDIF(CMAKE_BUILD_TYPE MATCHES DEBUG)
+
+# set default include directories
+INCLUDE_DIRECTORIES(${EXTRA_INCLUDE_DIRS})
+
+# Default Linkflag
+set (PKG_TEMPLATE_PREFIX ${CMAKE_SOURCE_DIR}/${PROJECT_APP_TEMPLATES_DIR} CACHE PATH "Default Package Templates Directory")
+if(NOT BINDINGS_LINK_FLAG)
+	set(BINDINGS_LINK_FLAG "-Wl,--version-script=${PKG_TEMPLATE_PREFIX}/cmake/export.map")
+endif()