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Revision 5cc2d95f0d5a464bdbac6f15fe57e78f592f468a authored by Fredrik Salomonsson on 15 September 2022, 23:22:58 UTC, committed by Fredrik Salomonsson on 15 September 2022, 23:22:58 UTC 
Add cmake option LIBWETHAIR_FIND_DEPENDENCIES
 
Which allows to find dependencies instead of downloading them. This is
off by default.

Downloading and vendoring dependencies does not fit well with package
managers on linux. The dependency graph is hidden from the view of the
package manager. Making it both wasteful (both disk space and compile
time) and more opaque when it comes to debugging dependency related
issues.

This option will allow the best of both worlds. If you are building
this without a package manager, you can leave it off. But if you are
packaging this up for a package manager, you can enable this and leave
the dependencies for the package manager.
1 parent faeacb7
Raw File
CMakeLists.txt 
# Require a fairly modern cmake version
cmake_minimum_required (VERSION 3.14.0)

project (libWetHair)

set(CMAKE_CXX_STANDARD          11)
set(CMAKE_CXX_STANDARD_REQUIRED ON)
set(CMAKE_CXX_EXTENSIONS        OFF)

option(LIBWETHAIR_BUILD_CORE "Enable the core library, it is ON by default. Use BUILD_SHARED_LIBS to control the type of the library" ON)
option(LIBWETHAIR_BUILD_APP "Enable the libWetHair executable, it is ON by default." ON)
option(LIBWETHAIR_INSTALL_ASSETS "Install the assests, it is ON by default." ON)
option(LIBWETHAIR_FIND_DEPENDENCIES "Find dependencies instead of downloading them" OFF)

include(GNUInstallDirs)

if (NOT CMAKE_INSTALL_PREFIX)
  set(CMAKE_INSTALL_PREFIX "${CMAKE_SOURCE_DIR}/install")
endif (NOT CMAKE_INSTALL_PREFIX)

# Initialize the build type (Release, Debug, etc)
if (NOT CMAKE_BUILD_TYPE)
  set (CMAKE_BUILD_TYPE Release CACHE STRING
    "Choose the type of build, options are: Debug Release."
    FORCE)
endif (NOT CMAKE_BUILD_TYPE)

add_definitions (-DCMAKE_BUILD_TYPE="${CMAKE_BUILD_TYPE}")

if (CMAKE_BUILD_TYPE MATCHES Debug)
  add_definitions (-DDEBUG)
endif (CMAKE_BUILD_TYPE MATCHES Debug)

# Add directory with macros
list (APPEND CMAKE_MODULE_PATH "${PROJECT_SOURCE_DIR}/cmake")

# Don't build in the source directory
if ("${CMAKE_BINARY_DIR}" STREQUAL "${CMAKE_SOURCE_DIR}")
  message (SEND_ERROR "Do not build in the source directory.")
  message (FATAL_ERROR "Remove the created \"CMakeCache.txt\" file and the \"CMakeFiles\" directory, then create a build directory and call \"${CMAKE_COMMAND} <path to the sources>\".")
endif ("${CMAKE_BINARY_DIR}" STREQUAL "${CMAKE_SOURCE_DIR}")

if (LIBWETHAIR_BUILD_CORE)
  add_subdirectory (libWetHair)
endif (LIBWETHAIR_BUILD_CORE)

if (LIBWETHAIR_BUILD_APP)
  add_subdirectory (App)
endif (LIBWETHAIR_BUILD_APP)

if (LIBWETHAIR_INSTALL_ASSETS)
  install(DIRECTORY ${CMAKE_SOURCE_DIR}/assets
    DESTINATION ${CMAKE_INSTALL_DATADIR}/libWetHair)
endif (LIBWETHAIR_INSTALL_ASSETS)
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