X-Git-Url: https://gerrit.fd.io/r/gitweb?a=blobdiff_plain;f=src%2FCMakeLists.txt;h=fb4463e332e58801b43a71aff5612442023a0495;hb=a923ce5915b69da86d0f4b2457c38cabe62a2e65;hp=75e4253245bac669ee68333825494d5ccb3ecdd4;hpb=21feecf71da8b1f63c37f4bd684834699c04da7d;p=vpp.git

diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index 75e4253245b..fb4463e332e 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -11,28 +11,11 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-cmake_minimum_required(VERSION 3.10)
-
-set(CMAKE_C_COMPILER_NAMES
-  clang-13
-  clang-12
-  clang-11
-  clang-10
-  clang-9
-  gcc-10
-  gcc-9
-  cc
-)
+cmake_minimum_required(VERSION 3.13)
 
-project(vpp C)
+set(CMAKE_C_COMPILER_NAMES clang gcc cc)
 
-if(CMAKE_VERSION VERSION_LESS 3.12)
-  macro(add_compile_definitions defs)
-    foreach(d ${defs})
-      add_compile_options(-D${d})
-    endforeach()
-  endmacro()
-endif()
+project(vpp C)
 
 if(NOT DEFINED CMAKE_INSTALL_LIBDIR AND EXISTS "/etc/debian_version")
   set(CMAKE_INSTALL_LIBDIR "lib/${CMAKE_LIBRARY_ARCHITECTURE}")
@@ -57,6 +40,43 @@ execute_process(
 string(REPLACE "-" ";" VPP_LIB_VERSION ${VPP_VERSION})
 list(GET VPP_LIB_VERSION 0 VPP_LIB_VERSION)
 
+##############################################################################
+# compiler specifics
+##############################################################################
+
+set(MIN_SUPPORTED_CLANG_C_COMPILER_VERSION 9.0.0)
+set(MIN_SUPPORTED_GNU_C_COMPILER_VERSION 9.0.0)
+
+if(CMAKE_C_COMPILER_ID STREQUAL "Clang")
+  if (CMAKE_C_COMPILER_VERSION VERSION_LESS MIN_SUPPORTED_CLANG_C_COMPILER_VERSION)
+    set(COMPILER_TOO_OLD TRUE)
+  endif()
+elseif(CMAKE_C_COMPILER_ID STREQUAL "GNU")
+  if (CMAKE_C_COMPILER_VERSION VERSION_LESS MIN_SUPPORTED_GNU_C_COMPILER_VERSION)
+    set(COMPILER_TOO_OLD TRUE)
+  endif()
+  set(GCC_STRING_OVERFLOW_WARNING_DISABLE_VERSION 10.0.0)
+  if (CMAKE_C_COMPILER_VERSION VERSION_GREATER_EQUAL GCC_STRING_OVERFLOW_WARNING_DISABLE_VERSION)
+    add_compile_options(-Wno-stringop-overflow)
+  endif()
+else()
+  message(WARNING "WARNING: Unsupported C compiler `${CMAKE_C_COMPILER_ID}` is used")
+  set (PRINT_MIN_C_COMPILER_VER TRUE)
+endif()
+if (COMPILER_TOO_OLD)
+  message(WARNING "WARNING: C compiler version is too old and it's usage may result")
+  message(WARNING "         in sub-optimal binaries or lack of support for specific CPU types.")
+  set (PRINT_MIN_C_COMPILER_VER TRUE)
+endif()
+
+if (PRINT_MIN_C_COMPILER_VER)
+  string (APPEND _t "Supported C compilers are ")
+  string (APPEND _t "Clang ${MIN_SUPPORTED_CLANG_C_COMPILER_VERSION} or higher ")
+  string (APPEND _t "and GNU ${MIN_SUPPORTED_GNU_C_COMPILER_VERSION} or higher.")
+  message(WARNING "         ${_t}")
+  unset (_t)
+endif()
+
 ##############################################################################
 # cross compiling
 ##############################################################################
@@ -79,10 +99,10 @@ set(VPP_LIBRARY_DIR ${CMAKE_INSTALL_LIBDIR} CACHE STRING "Relative library direc
 set(CMAKE_RUNTIME_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/${VPP_RUNTIME_DIR})
 set(CMAKE_LIBRARY_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/${VPP_LIBRARY_DIR})
 set(VPP_BINARY_DIR ${CMAKE_BINARY_DIR}/CMakeFiles)
-set(PYENV PYTHONPYCACHEPREFIX=${CMAKE_BINARY_DIR}/CMakeFile/__pycache__)
+set(PYENV PYTHONPYCACHEPREFIX=${CMAKE_BINARY_DIR}/CMakeFiles/__pycache__)
 
 if (CMAKE_BUILD_TYPE)
-  add_compile_options(-g -fPIC -Werror -Wall)
+  add_compile_options(-g -Werror -Wall)
 endif()
 
 if (compiler_flag_no_address_of_packed_member)
@@ -98,7 +118,6 @@ set(CMAKE_C_FLAGS_DEBUG "")
 if (${CMAKE_BUILD_TYPE_LC} MATCHES "release")
   add_compile_options(-O3 -fstack-protector -fno-common)
   add_compile_definitions(_FORTIFY_SOURCE=2)
-  set(CMAKE_EXE_LINKER_FLAGS_RELEASE "-pie")
 elseif (${CMAKE_BUILD_TYPE_LC} MATCHES "debug")
   add_compile_options(-O0 -fstack-protector -fno-common)
   add_compile_definitions(CLIB_DEBUG)
@@ -125,6 +144,10 @@ if (CMAKE_BUILD_TYPE_UC STREQUAL "RELEASE")
   endif()
 endif()
 
+if(VPP_USE_LTO)
+  check_c_compiler_flag("-Wno-stringop-overflow"
+		        compiler_flag_no_stringop_overflow)
+endif()
 ##############################################################################
 # sanitizers
 ##############################################################################
@@ -138,9 +161,7 @@ set(VPP_SANITIZE_ADDR_OPTIONS
 
 if (VPP_ENABLE_SANITIZE_ADDR)
   add_compile_options(-fsanitize=address)
-  add_compile_definitions(CLIB_SANITIZE_ADDR)
-  set(CMAKE_EXE_LINKER_FLAGS "-fsanitize=address ${CMAKE_EXE_LINKER_FLAGS}")
-  set(CMAKE_SHARED_LINKER_FLAGS "-fsanitize=address ${CMAKE_SHARED_LINKER_FLAGS}")
+  add_link_options(-fsanitize=address)
 endif (VPP_ENABLE_SANITIZE_ADDR)
 
 ##############################################################################
@@ -152,6 +173,14 @@ if(VPP_ENABLE_TRAJECTORY_TRACE)
   add_compile_definitions(VLIB_BUFFER_TRACE_TRAJECTORY=1)
 endif()
 
+##############################################################################
+# unittest with clang ode coverage
+##############################################################################
+
+if("${CMAKE_VERSION}" VERSION_GREATER_EQUAL "3.13" AND "${CMAKE_C_COMPILER_ID}" MATCHES "(Apple)?[Cc]lang")
+  option(VPP_BUILD_TESTS_WITH_COVERAGE "Build unit tests with code coverage" OFF)
+endif()
+
 ##############################################################################
 # install config
 ##############################################################################
@@ -265,6 +294,7 @@ pr("VPP version" ${VPP_VERSION})
 pr("VPP library version" ${VPP_LIB_VERSION})
 pr("GIT toplevel dir" ${VPP_GIT_TOPLEVEL_DIR})
 pr("Build type" ${CMAKE_BUILD_TYPE})
+pr("C compiler" "${CMAKE_C_COMPILER} (${CMAKE_C_COMPILER_ID} ${CMAKE_C_COMPILER_VERSION})")
 pr("C flags" ${CMAKE_C_FLAGS}${CMAKE_C_FLAGS_${CMAKE_BUILD_TYPE_UC}})
 pr("Linker flags (apps)" ${CMAKE_EXE_LINKER_FLAGS} ${CMAKE_EXE_LINKER_FLAGS_${CMAKE_BUILD_TYPE_UC}})
 pr("Linker flags (libs)" ${CMAKE_SHARED_LINKER_FLAGS} ${CMAKE_SHARED_LINKER_FLAGS_${CMAKE_BUILD_TYPE_UC}})
@@ -272,3 +302,5 @@ pr("Host processor" ${CMAKE_HOST_SYSTEM_PROCESSOR})
 pr("Target processor" ${CMAKE_SYSTEM_PROCESSOR})
 pr("Prefix path" ${CMAKE_PREFIX_PATH})
 pr("Install prefix" ${CMAKE_INSTALL_PREFIX})
+pr("Library dir" ${VPP_LIBRARY_DIR})
+pr("Multiarch variants" ${MARCH_VARIANTS_NAMES})