CMakeLists.txt

# This is a rewrite over time of the CMake file from the libe57 reference implementation
#   https://en.wikipedia.org/wiki/Ship_of_Theseus
#
# Use git blame to see all the changes and who has contributed.
#
# The original cmake file is:
# Copyright 2010-2012 Roland Schwarz, Riegl LMS GmbH
#
# Permission is hereby granted, free of charge, to any person or organization
# obtaining a copy of the software and accompanying documentation covered by
# this license (the "Software") to use, reproduce, display, distribute,
# execute, and transmit the Software, and to prepare derivative works of the
# Software, and to permit third-parties to whom the Software is furnished to
# do so, all subject to the following:
#
# The copyright notices in the Software and this entire statement, including
# the above license grant, this restriction and the following disclaimer,
# must be included in all copies of the Software, in whole or in part, and
# all derivative works of the Software, unless such copies or derivative
# works are solely in the form of machine-executable object code generated by
# a source language processor.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT
# SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
# FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
# ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
# DEALINGS IN THE SOFTWARE.

cmake_minimum_required( VERSION 3.10.0 )

# Override flags to enable linking to static runtime
set( CMAKE_USER_MAKE_RULES_OVERRIDE ${CMAKE_CURRENT_SOURCE_DIR}/cmake/c_flag_overrides.cmake )
set( CMAKE_USER_MAKE_RULES_OVERRIDE_CXX ${CMAKE_CURRENT_SOURCE_DIR}/cmake/cxx_flag_overrides.cmake )

# Set a private module find path
set( CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} "${CMAKE_CURRENT_SOURCE_DIR}/cmake/Modules/" )

project( E57Format
    VERSION 2.1.0
)

include( Tags )

# Check if we are building ourself or being included and use this to set some defaults
if ( ${PROJECT_NAME} STREQUAL ${CMAKE_PROJECT_NAME} )
    set( E57_BUILDING_SELF ON )
endif()

# propose a default installation directory
if ( E57_BUILDING_SELF )
    if( CMAKE_INSTALL_PREFIX_INITIALIZED_TO_DEFAULT )
        string( REGEX REPLACE "/${PROJECT_NAME}" "" CMAKE_INSTALL_PREFIX ${CMAKE_INSTALL_PREFIX} )
        set( T_ ${PROJECT_NAME} )
        set( T_ ${T_}-${PROJECT_VERSION_MAJOR} )
        set( T_ ${T_}.${PROJECT_VERSION_MINOR} )
        set( T_ ${T_}-${${PROJECT_NAME}_BUILD_TAG} )
        set( CMAKE_INSTALL_PREFIX ${CMAKE_INSTALL_PREFIX}/${T_}
                CACHE PATH
                "Install path prefix, prepended onto install directories."
                FORCE
        )
    endif()
endif()

find_package( Threads REQUIRED )

# Xerces-c
find_package( XercesC REQUIRED )

# Target
add_library( E57Format STATIC
    include/E57Exception.h
    include/E57Format.h
    extern/CRCpp/inc/CRC.h
)

add_subdirectory( src )

# Target properties
set_target_properties( E57Format PROPERTIES
	CXX_STANDARD 11
	CXX_STANDARD_REQUIRED YES
	CXX_EXTENSIONS NO
	DEBUG_POSTFIX "-d"
	POSITION_INDEPENDENT_CODE ON
)

# Target definitions
target_compile_definitions( E57Format
    PRIVATE
        -DCRCPP_USE_CPP11
        -DCRCPP_BRANCHLESS
        -DREVISION_ID="${PROJECT_NAME}-${PROJECT_VERSION_MAJOR}.${PROJECT_VERSION_MINOR}.${PROJECT_VERSION_PATCH}-${${PROJECT_NAME}_BUILD_TAG}"
)

if ( WIN32 )
    option( USING_STATIC_XERCES "Turn on if you are linking with Xerces as a static lib" OFF )
    if ( USING_STATIC_XERCES )
        target_compile_definitions( E57Format
            PUBLIC
                XERCES_STATIC_LIBRARY
        )
    endif()
endif()

# Target includes
target_include_directories( E57Format
    PUBLIC
        $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include>
        $<INSTALL_INTERFACE:include/E57Format>
    PRIVATE
        extern/CRCpp/inc   # CRCpp from here: https://github.com/d-bahr/CRCpp
)

# Target Libraries
target_link_libraries( E57Format PRIVATE XercesC::XercesC )

# Install
install(
    TARGETS
        E57Format
    EXPORT
        E57Format-export
    ARCHIVE DESTINATION lib
)

install(
    FILES
        include/E57Exception.h
        include/E57Format.h
    DESTINATION include/E57Format
)

# CMake package files
install(
    EXPORT
        E57Format-export
    DESTINATION lib/cmake/E57Format
)

install(
    FILES
        ${CMAKE_CURRENT_SOURCE_DIR}/cmake/E57Format-config.cmake
    DESTINATION
        lib/cmake/E57Format
)