cmake: introduce cmake as alternative build system

see #27

Signed-off-by: Alexander Dahl <post@lespocky.de>

.gitignore

@@ -9,3 +9,4 @@ libcgi.so
 autom4te.cache
 configure
 src/config.h
+*swp

CMakeLists.txt

@@ -0,0 +1,46 @@
+#
+# Copyright 2013,2016 Alexander Dahl <post@lespocky.de>
+#
+cmake_minimum_required(VERSION 2.8.8)
+
+project(cgi)
+string(TOUPPER ${PROJECT_NAME} PROJECT_NAME_UC)
+string(TOLOWER ${PROJECT_NAME} PROJECT_NAME_LC)
+set(LIBPREFIX ${PROJECT_NAME})
+set(LIBPREFIX_LC ${PROJECT_NAME_LC})
+set(LIBPREFIX_UC ${PROJECT_NAME_UC})
+
+set(PACKAGE_MAJOR_VERSION "1")
+set(PACKAGE_MINOR_VERSION "0")
+set(PACKAGE_BUILD_VERSION "0")
+set(PACKAGE_VERSION "${PACKAGE_MAJOR_VERSION}.${PACKAGE_MINOR_VERSION}.${PACKAGE_BUILD_VERSION}")
+
+# includes
+include(CMakePackageConfigHelpers)	# cmake 2.8.8
+include(FeatureSummary)
+include(GNUInstallDirs)				# cmake 2.8.5
+
+# subdirectories
+add_subdirectory("src")
+
+# cmake package stuff
+configure_package_config_file(${PROJECT_NAME_LC}-config.cmake.in
+	"${CMAKE_CURRENT_BINARY_DIR}/${PROJECT_NAME_LC}-config.cmake"
+	INSTALL_DESTINATION "${CMAKE_INSTALL_LIBDIR}/cmake/${PROJECT_NAME}"
+	PATH_VARS CMAKE_INSTALL_INCLUDEDIR
+	NO_CHECK_REQUIRED_COMPONENTS_MACRO
+)
+write_basic_package_version_file(
+	"${CMAKE_CURRENT_BINARY_DIR}/${PROJECT_NAME_LC}-config-version.cmake"
+	VERSION ${PACKAGE_VERSION}
+	COMPATIBILITY AnyNewerVersion
+)
+install(FILES
+	"${CMAKE_CURRENT_BINARY_DIR}/${PROJECT_NAME_LC}-config.cmake"
+	"${CMAKE_CURRENT_BINARY_DIR}/${PROJECT_NAME_LC}-config-version.cmake"
+	DESTINATION "${CMAKE_INSTALL_LIBDIR}/cmake/${PROJECT_NAME}"
+)
+
+# feature summary
+message(STATUS "CMAKE_BUILD_TYPE: ${CMAKE_BUILD_TYPE}")
+feature_summary(WHAT ALL)

cgi-config.cmake.in

@@ -0,0 +1,14 @@
+#
+# Copyright 2013 Alexander Dahl <post@lespocky.de>
+#
+
+# paths
+@PACKAGE_INIT@
+set_and_check(CGI_INCLUDE_DIRS "@PACKAGE_CMAKE_INSTALL_INCLUDEDIR@/@PROJECT_NAME@")
+
+# targets
+get_filename_component(_dir "${CMAKE_CURRENT_LIST_FILE}" PATH)
+if(NOT TARGET @PROJECT_NAME@-shared)
+	include("${_dir}/@PROJECT_NAME@-targets.cmake")
+endif(NOT TARGET @PROJECT_NAME@-shared)
+set(CGI_LIBRARIES @PROJECT_NAME@-shared)

src/CMakeLists.txt

@@ -0,0 +1,50 @@
+#
+# Copyright 2013,2016 Alexander Dahl <post@lespocky.de>
+#
+configure_file(
+	"${CMAKE_CURRENT_SOURCE_DIR}/config.h.cmake.in"
+	"${CMAKE_CURRENT_BINARY_DIR}/config.h"
+)
+
+include_directories(
+	"${CMAKE_CURRENT_BINARY_DIR}"
+)
+
+set(CGI_SRC
+	base64.c
+	cgi.c
+	cookie.c
+	error.c
+	general.c
+	list.c
+	#	md5.c
+	session.c
+	string.c
+)
+
+# create binary
+add_library(${PROJECT_NAME}-shared SHARED ${CGI_SRC})
+set_target_properties(${PROJECT_NAME}-shared PROPERTIES
+	OUTPUT_NAME	${PROJECT_NAME}
+	SOVERSION	${PACKAGE_MAJOR_VERSION}
+	VERSION		${PACKAGE_VERSION}
+)
+
+# install binary
+install(TARGETS ${PROJECT_NAME}-shared
+	EXPORT ${PROJECT_NAME}-targets
+	LIBRARY DESTINATION "${CMAKE_INSTALL_LIBDIR}"
+)
+
+# install cmake targets
+install(EXPORT ${PROJECT_NAME}-targets
+	DESTINATION "${CMAKE_INSTALL_LIBDIR}/cmake/${PROJECT_NAME}"
+)
+
+# install headers
+install(FILES
+	cgi.h
+	error.h
+	session.h
+	DESTINATION "${CMAKE_INSTALL_INCLUDEDIR}/${PROJECT_NAME}"
+)

src/config.h.cmake.in

@@ -0,0 +1 @@
+#define	HAVE_MD5	0