CMake as an alternative to autotools (experimental)

Change-Id: Ibc59323e849810531dd0963e85493efad3b86857
Signed-off-by: Damjan Marion <damarion@cisco.com>

1 files changed, 161 insertions, 0 deletions

diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
new file mode 100644
index 00000000000..13ae93d6e24
--- /dev/null
+++ b/src/CMakeLists.txt
@@ -0,0 +1,161 @@
+# Copyright (c) 2018 Cisco and/or its affiliates.
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at:
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+cmake_minimum_required(VERSION 3.5 FATAL_ERROR)
+
+project(vpp C)
+
+include(CheckCCompilerFlag)
+
+##############################################################################
+# CPU optimizations and multiarch support
+##############################################################################
+if(CMAKE_SYSTEM_PROCESSOR MATCHES "amd64.*|x86_64.*|AMD64.*")
+  set(CMAKE_C_FLAGS "-march=corei7 -mtune=corei7-avx ${CMAKE_C_FLAGS}")
+  check_c_compiler_flag("-march=core-avx2" AVX2)
+  if(AVX2)
+    list(APPEND MARCH_VARIANTS "avx2\;-march=core-avx2 -mtune=core-avx2")
+  endif()
+  check_c_compiler_flag("-march=skylake-avx512" AVX512)
+  if(AVX512)
+    list(APPEND MARCH_VARIANTS "avx512\;-march=skylake-avx512 -mtune=skylake-avx512")
+  endif()
+elseif(CMAKE_SYSTEM_PROCESSOR MATCHES "^(aarch64.*|AARCH64.*)")
+  set(CMAKE_C_FLAGS "-march=armv8-a+crc ${CMAKE_C_FLAGS}")
+endif()
+
+macro(vpp_library_set_multiarch_sources lib)
+  foreach(V ${MARCH_VARIANTS})
+    list(GET V 0 VARIANT)
+    list(GET V 1 VARIANT_FLAGS)
+    set(l ${lib}_${VARIANT})
+    add_library(${l} OBJECT ${ARGN})
+    set_target_properties(${l} PROPERTIES POSITION_INDEPENDENT_CODE ON)
+    target_compile_options(${l} PUBLIC "-DCLIB_MARCH_VARIANT=${VARIANT}")
+    separate_arguments(VARIANT_FLAGS)
+    target_compile_options(${l} PUBLIC ${VARIANT_FLAGS})
+    target_sources(${lib} PRIVATE $<TARGET_OBJECTS:${l}>)
+  endforeach()
+endmacro()
+
+##############################################################################
+# build config
+##############################################################################
+set(CMAKE_RUNTIME_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/bin)
+set(CMAKE_LIBRARY_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/lib)
+set(CMAKE_C_FLAGS_COMMON "-DFORTIFY_SOURCE=2 -fstack-protector-all -Werror")
+set(CMAKE_C_FLAGS_DEBUG "${CMAKE_C_FLAGS_DEBUG} ${CMAKE_C_FLAGS_COMMON} -DCLIB_DEBUG")
+set(CMAKE_C_FLAGS_RELEASE "${CMAKE_C_FLAGS_RELEASE} ${CMAKE_C_FLAGS_COMMON}")
+
+##############################################################################
+# ccache
+##############################################################################
+option(VPP_USE_CCACHE "Use ccache compiler cache." ON)
+if(VPP_USE_CCACHE)
+  find_program(CCACHE_FOUND ccache)
+  message(STATUS "Looking for ccache")
+  if(CCACHE_FOUND)
+    message(STATUS "Looking for ccache - found")
+    set_property(GLOBAL PROPERTY RULE_LAUNCH_COMPILE ccache)
+    set_property(GLOBAL PROPERTY RULE_LAUNCH_LINK ccache)
+  else(CCACHE_FOUND)
+    message(STATUS "Looking for ccache - not found")
+  endif(CCACHE_FOUND)
+endif(VPP_USE_CCACHE)
+
+##############################################################################
+# install config
+##############################################################################
+set(CMAKE_INSTALL_RPATH "${CMAKE_INSTALL_PREFIX}/lib")
+set(CMAKE_INSTALL_MESSAGE NEVER)
+
+message(STATUS "CMAKE_C_FLAGS: ${CMAKE_C_FLAGS}")
+message(STATUS "We are on a ${CMAKE_SYSTEM_NAME} system")
+message(STATUS "The host processor is ${CMAKE_HOST_SYSTEM_PROCESSOR}")
+
+include_directories (
+	${CMAKE_SOURCE_DIR}
+	${CMAKE_BINARY_DIR}
+	${CMAKE_BINARY_DIR}/include
+)
+set(CMAKE_INSTALL_DEFAULT_COMPONENT_NAME "vpp")
+
+set(THREADS_PREFER_PTHREAD_FLAG ON)
+find_package(Threads REQUIRED)
+find_package(OpenSSL REQUIRED)
+include_directories(${OPENSSL_INCLUDE_DIR})
+
+add_definitions(-DHAVE_MEMFD_CREATE -DVPP_API_TEST_BUILTIN=1)
+
+##############################################################################
+# API
+##############################################################################
+function(vpp_generate_api_header file)
+  set (output_name ${CMAKE_CURRENT_BINARY_DIR}/${file}.h)
+  get_filename_component(output_dir ${output_name} DIRECTORY)
+  add_custom_command (OUTPUT ${output_name}
+    COMMAND mkdir -p ${output_dir}
+    COMMAND ${CMAKE_SOURCE_DIR}/tools/vppapigen/vppapigen
+    ARGS --includedir ${CMAKE_SOURCE_DIR} --input ${CMAKE_CURRENT_SOURCE_DIR}/${file} --output ${output_name}
+    DEPENDS ${CMAKE_CURRENT_SOURCE_DIR}/${file}
+    COMMENT "Generating API header ${file}.h"
+  )
+endfunction()
+
+function(vpp_add_api_files target)
+  unset(header_files)
+  foreach(file ${ARGN})
+    vpp_generate_api_header (${file})
+    list (APPEND header_files ${file}.h)
+  endforeach()
+  add_custom_target(${target} DEPENDS ${header_files})
+endfunction()
+
+add_custom_target(api_headers
+  DEPENDS vlibmemory_api_headers vnet_api_headers vpp_api_headers
+)
+
+##############################################################################
+# header files
+##############################################################################
+function (vpp_add_header_files path)
+  foreach(file ${ARGN})
+    get_filename_component(dir ${file} DIRECTORY)
+    install(FILES ${file} DESTINATION include/${path}/${dir})
+  endforeach()
+endfunction()
+
+##############################################################################
+# subdirs
+##############################################################################
+foreach (DIR vppinfra svm vlib vlibmemory vnet vpp vcl plugins)
+  add_subdirectory(${DIR})
+endforeach ()
+
+##############################################################################
+# DEB Packaging
+##############################################################################
+set(CPACK_GENERATOR "DEB")
+set(CPACK_DEBIAN_PACKAGE_MAINTAINER "VPP Team")
+set(CPACK_PACKAGE_NAME "vpp")
+set(CPACK_PACKAGE_VENDOR "fd.io")
+set(CPACK_PACKAGE_VERSION "18.08")
+set(CPACK_DEB_COMPONENT_INSTALL ON)
+set(CPACK_COMPONENTS_IGNORE_GROUPS 1)
+set(CPACK_DEBIAN_VPP_PACKAGE_NAME "vpp")
+set(CPACK_DEBIAN_VPP_FILE_NAME "vpp.deb")
+set(CPACK_DEBIAN_DEV_PACKAGE_NAME "vpp-dev")
+set(CPACK_DEBIAN_DEV_FILE_NAME "vpp-dev.deb")
+set(CPACK_DEBIAN_PLUGINS_PACKAGE_NAME "vpp-plugins")
+set(CPACK_DEBIAN_PLUGINS_FILE_NAME "vpp-plugins.deb")
+include(CPack)