[build] Move CMake and Visual build systems to build/

Fixes #852.

2 files changed, 237 insertions, 0 deletions

diff --git a/build/cmake/.gitignore b/build/cmake/.gitignore
new file mode 100644
index 0000000..d39505d
--- /dev/null
+++ b/build/cmake/.gitignore
@@ -0,0 +1,9 @@
+# cmake artefact
+
+CMakeCache.txt
+CMakeFiles
+*.cmake
+Makefile
+liblz4.pc
+lz4c
+install_manifest.txt
diff --git a/build/cmake/CMakeLists.txt b/build/cmake/CMakeLists.txt
new file mode 100644
index 0000000..42d92ea
--- /dev/null
+++ b/build/cmake/CMakeLists.txt
@@ -0,0 +1,228 @@
+# CMake support for LZ4
+#
+# To the extent possible under law, the author(s) have dedicated all
+# copyright and related and neighboring rights to this software to
+# the public domain worldwide. This software is distributed without
+# any warranty.
+#
+# For details, see <http://creativecommons.org/publicdomain/zero/1.0/>.
+#
+# LZ4's CMake support is maintained by Evan Nemerson; when filing
+# bugs please mention @nemequ to make sure I see it.
+
+set(LZ4_TOP_SOURCE_DIR "${CMAKE_CURRENT_SOURCE_DIR}/../..")
+
+option(LZ4_BUILD_LEGACY_LZ4C "Build lz4c progam with legacy argument support" ON)
+
+# Parse version information
+file(STRINGS "${LZ4_TOP_SOURCE_DIR}/lib/lz4.h" LZ4_VERSION_MAJOR REGEX "^#define LZ4_VERSION_MAJOR +([0-9]+) +.*$")
+string(REGEX REPLACE "^#define LZ4_VERSION_MAJOR +([0-9]+) +.*$" "\\1" LZ4_VERSION_MAJOR "${LZ4_VERSION_MAJOR}")
+file(STRINGS "${LZ4_TOP_SOURCE_DIR}/lib/lz4.h" LZ4_VERSION_MINOR REGEX "^#define LZ4_VERSION_MINOR +([0-9]+) +.*$")
+string(REGEX REPLACE "^#define LZ4_VERSION_MINOR +([0-9]+) +.*$" "\\1" LZ4_VERSION_MINOR "${LZ4_VERSION_MINOR}")
+file(STRINGS "${LZ4_TOP_SOURCE_DIR}/lib/lz4.h" LZ4_VERSION_RELEASE REGEX "^#define LZ4_VERSION_RELEASE +([0-9]+) +.*$")
+string(REGEX REPLACE "^#define LZ4_VERSION_RELEASE +([0-9]+) +.*$" "\\1" LZ4_VERSION_RELEASE "${LZ4_VERSION_RELEASE}")
+set(LZ4_VERSION_STRING "${LZ4_VERSION_MAJOR}.${LZ4_VERSION_MINOR}.${LZ4_VERSION_RELEASE}")
+mark_as_advanced(LZ4_VERSION_STRING LZ4_VERSION_MAJOR LZ4_VERSION_MINOR LZ4_VERSION_RELEASE)
+
+if("${CMAKE_VERSION}" VERSION_LESS "3.0")
+  project(LZ4 C)
+else()
+  cmake_policy (SET CMP0048 NEW)
+  project(LZ4
+    VERSION ${LZ4_VERSION_STRING}
+    LANGUAGES C)
+endif()
+
+cmake_minimum_required (VERSION 2.8.6)
+
+# If LZ4 is being bundled in another project, we don't want to
+# install anything.  However, we want to let people override this, so
+# we'll use the LZ4_BUNDLED_MODE variable to let them do that; just
+# set it to OFF in your project before you add_subdirectory(lz4/contrib/cmake_unofficial).
+get_directory_property(LZ4_PARENT_DIRECTORY PARENT_DIRECTORY)
+if("${LZ4_BUNDLED_MODE}" STREQUAL "")
+  # Bundled mode hasn't been set one way or the other, set the default
+  # depending on whether or not we are the top-level project.
+  if("${LZ4_PARENT_DIRECTORY}" STREQUAL "")
+    set(LZ4_BUNDLED_MODE OFF)
+  else()
+    set(LZ4_BUNDLED_MODE ON)
+  endif()
+endif()
+mark_as_advanced(LZ4_BUNDLED_MODE)
+
+# CPack
+if(NOT LZ4_BUNDLED_MODE AND NOT CPack_CMake_INCLUDED)
+  set(CPACK_PACKAGE_DESCRIPTION_SUMMARY "LZ4 compression library")
+  set(CPACK_PACKAGE_DESCRIPTION_FILE "${LZ4_TOP_SOURCE_DIR}/README.md")
+  set(CPACK_RESOURCE_FILE_LICENSE "${LZ4_TOP_SOURCE_DIR}/LICENSE")
+  set(CPACK_PACKAGE_VERSION_MAJOR ${LZ4_VERSION_MAJOR})
+  set(CPACK_PACKAGE_VERSION_MINOR ${LZ4_VERSION_MINOR})
+  set(CPACK_PACKAGE_VERSION_PATCH ${LZ4_VERSION_RELEASE})
+  include(CPack)
+endif(NOT LZ4_BUNDLED_MODE AND NOT CPack_CMake_INCLUDED)
+
+# Allow people to choose whether to build shared or static libraries
+# via the BUILD_SHARED_LIBS option unless we are in bundled mode, in
+# which case we always use static libraries.
+include(CMakeDependentOption)
+CMAKE_DEPENDENT_OPTION(BUILD_SHARED_LIBS "Build shared libraries" ON "NOT LZ4_BUNDLED_MODE" OFF)
+CMAKE_DEPENDENT_OPTION(BUILD_STATIC_LIBS "Build static libraries" OFF "BUILD_SHARED_LIBS" ON)
+
+if(NOT BUILD_SHARED_LIBS AND NOT BUILD_STATIC_LIBS)
+  message(FATAL_ERROR "Both BUILD_SHARED_LIBS and BUILD_STATIC_LIBS have been disabled")
+endif()
+
+set(LZ4_LIB_SOURCE_DIR "${LZ4_TOP_SOURCE_DIR}/lib")
+set(LZ4_PROG_SOURCE_DIR "${LZ4_TOP_SOURCE_DIR}/programs")
+
+include_directories("${LZ4_LIB_SOURCE_DIR}")
+
+# CLI sources
+set(LZ4_SOURCES
+  "${LZ4_LIB_SOURCE_DIR}/lz4.c"
+  "${LZ4_LIB_SOURCE_DIR}/lz4hc.c"
+  "${LZ4_LIB_SOURCE_DIR}/lz4.h"
+  "${LZ4_LIB_SOURCE_DIR}/lz4hc.h"
+  "${LZ4_LIB_SOURCE_DIR}/lz4frame.c"
+  "${LZ4_LIB_SOURCE_DIR}/lz4frame.h"
+  "${LZ4_LIB_SOURCE_DIR}/xxhash.c")
+set(LZ4_CLI_SOURCES
+  "${LZ4_PROG_SOURCE_DIR}/bench.c"
+  "${LZ4_PROG_SOURCE_DIR}/lz4cli.c"
+  "${LZ4_PROG_SOURCE_DIR}/lz4io.c"
+  "${LZ4_PROG_SOURCE_DIR}/datagen.c")
+
+# Whether to use position independent code for the static library.  If
+# we're building a shared library this is ignored and PIC is always
+# used.
+option(LZ4_POSITION_INDEPENDENT_LIB "Use position independent code for static library (if applicable)" ON)
+
+# liblz4
+set(LZ4_LIBRARIES_BUILT)
+if(BUILD_SHARED_LIBS)
+  add_library(lz4_shared SHARED ${LZ4_SOURCES})
+  set_target_properties(lz4_shared PROPERTIES
+    OUTPUT_NAME lz4
+    SOVERSION "${LZ4_VERSION_MAJOR}"
+    VERSION "${LZ4_VERSION_STRING}")
+  list(APPEND LZ4_LIBRARIES_BUILT lz4_shared)
+endif()
+if(BUILD_STATIC_LIBS)
+  add_library(lz4_static STATIC ${LZ4_SOURCES})
+  set_target_properties(lz4_static PROPERTIES
+    OUTPUT_NAME lz4
+    POSITION_INDEPENDENT_CODE ${LZ4_POSITION_INDEPENDENT_LIB})
+  list(APPEND LZ4_LIBRARIES_BUILT lz4_static)
+endif()
+
+# link to shared whenever possible, to static otherwise
+if(BUILD_SHARED_LIBS)
+  set(LZ4_LINK_LIBRARY lz4_shared)
+else()
+  set(LZ4_LINK_LIBRARY lz4_static)
+endif()
+
+# lz4
+set(LZ4_PROGRAMS_BUILT lz4cli)
+add_executable(lz4cli ${LZ4_CLI_SOURCES})
+set_target_properties(lz4cli PROPERTIES OUTPUT_NAME lz4)
+target_link_libraries(lz4cli ${LZ4_LINK_LIBRARY})
+
+# lz4c
+if (LZ4_BUILD_LEGACY_LZ4C)
+  list(APPEND LZ4_PROGRAMS_BUILT lz4c)
+  add_executable(lz4c ${LZ4_CLI_SOURCES})
+  set_target_properties(lz4c PROPERTIES COMPILE_DEFINITIONS "ENABLE_LZ4C_LEGACY_OPTIONS")
+  target_link_libraries(lz4c ${LZ4_LINK_LIBRARY})
+endif()
+
+# Extra warning flags
+include (CheckCCompilerFlag)
+foreach (flag
+    # GCC-style
+    -Wall
+    -Wextra
+    -Wundef
+    -Wcast-qual
+    -Wcast-align
+    -Wshadow
+    -Wswitch-enum
+    -Wdeclaration-after-statement
+    -Wstrict-prototypes
+    -Wpointer-arith
+
+    # MSVC-style
+    /W4)
+  # Because https://gcc.gnu.org/wiki/FAQ#wnowarning
+  string(REGEX REPLACE "\\-Wno\\-(.+)" "-W\\1" flag_to_test "${flag}")
+  string(REGEX REPLACE "[^a-zA-Z0-9]+" "_" test_name "CFLAG_${flag_to_test}")
+
+  check_c_compiler_flag("${ADD_COMPILER_FLAGS_PREPEND} ${flag_to_test}" ${test_name})
+
+  if(${test_name})
+    set(CMAKE_C_FLAGS "${flag} ${CMAKE_C_FLAGS}")
+  endif()
+
+  unset(test_name)
+  unset(flag_to_test)
+endforeach (flag)
+
+if(NOT LZ4_BUNDLED_MODE)
+  include(GNUInstallDirs)
+
+  install(TARGETS ${LZ4_PROGRAMS_BUILT}
+    BUNDLE	DESTINATION "${CMAKE_INSTALL_BINDIR}"
+    RUNTIME DESTINATION "${CMAKE_INSTALL_BINDIR}")
+  install(TARGETS ${LZ4_LIBRARIES_BUILT}
+    LIBRARY DESTINATION "${CMAKE_INSTALL_LIBDIR}"
+    ARCHIVE DESTINATION "${CMAKE_INSTALL_LIBDIR}"
+    RUNTIME DESTINATION "${CMAKE_INSTALL_BINDIR}")
+  install(FILES
+    "${LZ4_LIB_SOURCE_DIR}/lz4.h"
+    "${LZ4_LIB_SOURCE_DIR}/lz4frame.h"
+    "${LZ4_LIB_SOURCE_DIR}/lz4hc.h"
+    DESTINATION "${CMAKE_INSTALL_INCLUDEDIR}")
+  install(FILES "${LZ4_PROG_SOURCE_DIR}/lz4.1"
+    DESTINATION "${CMAKE_INSTALL_MANDIR}/man1")
+  install(FILES "${CMAKE_CURRENT_BINARY_DIR}/liblz4.pc"
+    DESTINATION "${CMAKE_INSTALL_LIBDIR}/pkgconfig")
+
+  # install lz4cat and unlz4 symlinks on *nix
+  if(UNIX)
+    install(CODE "
+      foreach(f lz4cat unlz4)
+        set(dest \"\$ENV{DESTDIR}${CMAKE_INSTALL_FULL_BINDIR}/\${f}\")
+        message(STATUS \"Symlinking: \${dest} -> lz4\")
+        execute_process(
+          COMMAND \"${CMAKE_COMMAND}\" -E create_symlink lz4 \"\${dest}\")
+      endforeach()
+    ")
+
+    # create manpage aliases
+    foreach(f lz4cat unlz4)
+      file(WRITE "${CMAKE_CURRENT_BINARY_DIR}/${f}.1" ".so man1/lz4.1\n")
+      install(FILES "${CMAKE_CURRENT_BINARY_DIR}/${f}.1"
+        DESTINATION "${CMAKE_INSTALL_MANDIR}/man1")
+    endforeach()
+  endif(UNIX)
+endif(NOT LZ4_BUNDLED_MODE)
+
+# pkg-config
+set(PREFIX "${CMAKE_INSTALL_PREFIX}")
+
+if("${CMAKE_INSTALL_FULL_LIBDIR}" STREQUAL "${CMAKE_INSTALL_PREFIX}/${CMAKE_INSTALL_LIBDIR}")
+  set(LIBDIR "\${prefix}/${CMAKE_INSTALL_LIBDIR}")
+else()
+  set(LIBDIR "${CMAKE_INSTALL_FULL_LIBDIR}")
+endif()
+
+if("${CMAKE_INSTALL_FULL_INCLUDEDIR}" STREQUAL "${CMAKE_INSTALL_PREFIX}/${CMAKE_INSTALL_INCLUDEDIR}")
+  set(INCLUDEDIR "\${prefix}/${CMAKE_INSTALL_INCLUDEDIR}")
+else()
+  set(INCLUDEDIR "${CMAKE_INSTALL_FULL_INCLUDEDIR}")
+endif()
+
+# for liblz4.pc substitution
+set(VERSION ${LZ4_VERSION_STRING})
+configure_file(${LZ4_LIB_SOURCE_DIR}/liblz4.pc.in liblz4.pc @ONLY)