add cmake compile script

CMakeLists.txt

@@ -0,0 +1,82 @@
+cmake_minimum_required (VERSION 3.12)
+
+project(BSDIFF VERSION )
+enable_language(C)
+
+option(BUILD_SAMPLE "Build sample" OFF)
+set(BUILD_SHARED_LIBS FALSE CACHE BOOL "If TRUE, BSDIFF is built as a shared library, otherwise as a static library")
+
+set(TARGET_NAME bsdiff_bspatch)
+set(TARGET_SAMPLE_NAME_BSDIFF bsdiff)
+set(TARGET_SAMPLE_NAME_BSPATCH bspatch)
+
+set(TARGET_INSTALL_INCLUDEDIR include)
+set(TARGET_INSTALL_BINDIR bin)
+set(TARGET_INSTALL_LIBDIR lib)
+
+find_package(BZip2 MODULE REQUIRED)
+
+set(TARGET_SRC_PATH ${CMAKE_CURRENT_SOURCE_DIR})
+set(TARGET_SRC ${TARGET_SRC_PATH}/bspatch.c
+	       ${TARGET_SRC_PATH}/bsdiff.c)
+
+set(TARGET_INCLUDE ${TARGET_SRC_PATH})
+
+add_library(${TARGET_NAME} ${TARGET_SRC})
+target_include_directories(${TARGET_NAME} PRIVATE ${TARGET_INCLUDE})
+
+if(BUILD_SAMPLE)
+    add_executable(${TARGET_SAMPLE_NAME_BSDIFF} ${TARGET_SRC_PATH}/bsdiff.c)
+    target_compile_definitions(${TARGET_SAMPLE_NAME_BSDIFF} PRIVATE -DBSDIFF_EXECUTABLE)
+    target_include_directories(${TARGET_SAMPLE_NAME_BSDIFF} PRIVATE ${TARGET_INCLUDE})
+    target_link_libraries(${TARGET_SAMPLE_NAME_BSDIFF} PRIVATE ${TARGET_NAME} ${BZIP2_LIBRARIES})
+    target_include_directories(${TARGET_SAMPLE_NAME_BSDIFF} PRIVATE ${BZIP2_INCLUDE_DIR})
+
+    add_executable(${TARGET_SAMPLE_NAME_BSPATCH} ${TARGET_SRC_PATH}/bspatch.c)
+    target_compile_definitions(${TARGET_SAMPLE_NAME_BSPATCH} PRIVATE -DBSPATCH_EXECUTABLE)
+    target_include_directories(${TARGET_SAMPLE_NAME_BSPATCH} PRIVATE ${TARGET_INCLUDE})
+    target_link_libraries(${TARGET_SAMPLE_NAME_BSPATCH} PRIVATE ${TARGET_NAME} ${BZIP2_LIBRARIES})
+    target_include_directories(${TARGET_SAMPLE_NAME_BSPATCH} PRIVATE ${BZIP2_INCLUDE_DIR})
+endif()
+
+install(
+    TARGETS ${TARGET_NAME}
+    EXPORT ${TARGET_NAME}
+    PUBLIC_HEADER DESTINATION ${TARGET_INSTALL_INCLUDEDIR}
+    PRIVATE_HEADER DESTINATION ${TARGET_INSTALL_INCLUDEDIR}
+    RUNTIME DESTINATION ${TARGET_INSTALL_BINDIR}
+    LIBRARY DESTINATION ${TARGET_INSTALL_LIBDIR}
+    ARCHIVE DESTINATION ${TARGET_INSTALL_LIBDIR})
+
+install(FILES ${TARGET_SRC_PATH}/bspatch.h 
+              ${TARGET_SRC_PATH}/bsdiff.h
+    DESTINATION ${TARGET_INSTALL_INCLUDEDIR})
+
+install(
+    FILES ${CMAKE_CURRENT_BINARY_DIR}/${TARGET_SAMPLE_NAME_BSPATCH}
+          ${CMAKE_CURRENT_BINARY_DIR}/${TARGET_SAMPLE_NAME_BSDIFF}
+    DESTINATION ${TARGET_INSTALL_BINDIR})
+
+install(
+    EXPORT ${TARGET_NAME}
+    FILE ${TARGET_NAME}Targets.cmake
+    DESTINATION ${TARGET_INSTALL_LIBDIR}/cmake/${TARGET_NAME}
+)
+
+include(CMakePackageConfigHelpers)
+
+write_basic_package_version_file(
+    ${TARGET_NAME}ConfigVersion.cmake
+    VERSION ${PROJECT_VERSION_MAJOR}.${PROJECT_VERSION_MINOR}.${PROJECT_VERSION_PATCH}
+    COMPATIBILITY SameMajorVersion
+)
+
+configure_package_config_file(
+    cmake/PackageConfig.cmake.in ${TARGET_NAME}Config.cmake
+    INSTALL_DESTINATION ${TARGET_INSTALL_LIBDIR}/cmake/${TARGET_NAME}
+)
+
+install(FILES ${CMAKE_CURRENT_BINARY_DIR}/${TARGET_NAME}Config.cmake 
+	      ${CMAKE_CURRENT_BINARY_DIR}/${TARGET_NAME}ConfigVersion.cmake
+    DESTINATION ${TARGET_INSTALL_LIBDIR}/cmake/${TARGET_NAME}
+)

cmake/PackageConfig.cmake.in

@@ -0,0 +1,11 @@
+@PACKAGE_INIT@
+
+set(@PROJECT_NAME@_INCLUDE_DIRS ${PACKAGE_PREFIX_DIR}/include ${PACKAGE_PREFIX_DIR}/include/@TARGET_NAME@)
+
+set(@PROJECT_NAME@_SHARED_LIBRARIES ${PACKAGE_PREFIX_DIR}/lib/lib@TARGET_NAME@.so)
+set(@PROJECT_NAME@_STATIC_LIBRARIES ${PACKAGE_PREFIX_DIR}/lib/lib@TARGET_NAME@.a)
+
+include(CMakeFindDependencyMacro)
+
+include(${CMAKE_CURRENT_LIST_DIR}/@TARGET_NAME@Targets.cmake)
+check_required_components(@TARGET_NAME@)