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tcp: avoid fr segments less than mss if possible
[vpp.git] / src / CMakeLists.txt
diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index 4be2473..68d0a4f 100644 (file)
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -13,16 +13,26 @@
 
 cmake_minimum_required(VERSION 3.13)
 
-set(CMAKE_C_COMPILER_NAMES
-  clang-13
-  clang-12
-  clang-11
-  clang-10
-  clang-9
-  gcc-10
-  gcc-9
-  cc
-)
+if(DEFINED VPP_PLATFORM AND VPP_PLATFORM STREQUAL "default")
+  unset(VPP_PLATFORM)
+  unset(VPP_PLATFORM CACHE)
+  set(VPP_PLATFORM_NAME "default")
+elseif(DEFINED VPP_PLATFORM)
+  set(platform_file ${CMAKE_SOURCE_DIR}/cmake/platform/${VPP_PLATFORM}.cmake)
+  if(NOT EXISTS ${platform_file})
+     message(FATAL_ERROR "unknown platform ${VPP_PLATFORM}")
+  endif()
+  include(${platform_file})
+  set(VPP_PLATFORM_NAME ${VPP_PLATFORM})
+else()
+  set(VPP_PLATFORM_NAME "default")
+endif()
+
+if (DEFINED VPP_PLATFORM_C_COMPILER_NAMES)
+  set(CMAKE_C_COMPILER_NAMES ${VPP_PLATFORM_C_COMPILER_NAME})
+else()
+  set(CMAKE_C_COMPILER_NAMES clang gcc cc)
+endif()
 
 project(vpp C)
 
@@ -46,20 +56,76 @@ execute_process(
   OUTPUT_VARIABLE VPP_VERSION
   OUTPUT_STRIP_TRAILING_WHITESPACE
 )
+
+if (VPP_PLATFORM)
+  set(VPP_VERSION ${VPP_VERSION}-${VPP_PLATFORM_NAME})
+endif()
+
 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()
+  set(GCC_STRING_OVERREAD_WARNING_DISABLE_VERSION 12.0.0)
+  if (CMAKE_C_COMPILER_VERSION VERSION_GREATER_EQUAL GCC_STRING_OVERREAD_WARNING_DISABLE_VERSION)
+    add_compile_options(-Wno-stringop-overread)
+  endif()
+  set(GCC_ARRAY_BOUNDS_WARNING_DISABLE_VERSION 12.0.0)
+  if (CMAKE_C_COMPILER_VERSION VERSION_GREATER_EQUAL GCC_ARRAY_BOUNDS_WARNING_DISABLE_VERSION)
+    add_compile_options(-Wno-array-bounds)
+  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 "         ${_t}")
+  unset (_t)
+endif()
+
 ##############################################################################
 # cross compiling
 ##############################################################################
+
+if (${CMAKE_SYSTEM_NAME} MATCHES "Linux")
+  set(COMPILER_SUFFIX "linux-gnu")
+elseif (${CMAKE_SYSTEM_NAME} MATCHES "FreeBSD")
+  set(COMPILER_SUFFIX "freebsd")
+endif()
+
 if(CMAKE_CROSSCOMPILING)
   set(CMAKE_IGNORE_PATH
-    /usr/lib/${CMAKE_HOST_SYSTEM_PROCESSOR}-linux-gnu/
-    /usr/lib/${CMAKE_HOST_SYSTEM_PROCESSOR}-linux-gnu/lib/
+    /usr/lib/${CMAKE_HOST_SYSTEM_PROCESSOR}-${COMPILER_SUFFIX}/
+    /usr/lib/${CMAKE_HOST_SYSTEM_PROCESSOR}-${COMPILER_SUFFIX}/lib/
   )
 endif()
-set(CMAKE_C_COMPILER_TARGET ${CMAKE_SYSTEM_PROCESSOR}-linux-gnu)
-
+  set(CMAKE_C_COMPILER_TARGET ${CMAKE_SYSTEM_PROCESSOR}-${COMPILER_SUFFIX})
 ##############################################################################
 # build config
 ##############################################################################
@@ -99,6 +165,7 @@ elseif (${CMAKE_BUILD_TYPE_LC} MATCHES "coverity")
 elseif (${CMAKE_BUILD_TYPE_LC} MATCHES "gcov")
   add_compile_options(-O0 -fprofile-arcs -ftest-coverage)
   add_compile_definitions(CLIB_DEBUG CLIB_GCOV)
+  link_libraries(gcov)
 endif()
 
 set(BUILD_TYPES release debug coverity gcov)
@@ -133,7 +200,6 @@ set(VPP_SANITIZE_ADDR_OPTIONS
 
 if (VPP_ENABLE_SANITIZE_ADDR)
   add_compile_options(-fsanitize=address)
-  add_compile_definitions(CLIB_SANITIZE_ADDR)
   add_link_options(-fsanitize=address)
 endif (VPP_ENABLE_SANITIZE_ADDR)
 
@@ -147,7 +213,7 @@ if(VPP_ENABLE_TRAJECTORY_TRACE)
 endif()
 
 ##############################################################################
-# unittest with clang ode coverage
+# unittest with clang code coverage
 ##############################################################################
 
 if("${CMAKE_VERSION}" VERSION_GREATER_EQUAL "3.13" AND "${CMAKE_C_COMPILER_ID}" MATCHES "(Apple)?[Cc]lang")
@@ -178,13 +244,36 @@ include(cmake/library.cmake)
 include(cmake/exec.cmake)
 include(cmake/plugin.cmake)
 
+##############################################################################
+# FreeBSD - use epoll-shim
+##############################################################################
+set(EPOLL_LIB "")
+if("${CMAKE_SYSTEM_NAME}" STREQUAL "FreeBSD")
+  find_path(EPOLL_SHIM_INCLUDE_DIR NAMES sys/epoll.h HINTS /usr/local/include/libepoll-shim)
+  find_library(EPOLL_SHIM_LIB NAMES epoll-shim HINTS /usr/local/lib)
+
+  if(EPOLL_SHIM_INCLUDE_DIR AND EPOLL_SHIM_LIB)
+    message(STATUS "Found epoll-shim in ${EPOLL_SHIM_INCLUDE_DIR}")
+    include_directories(${EPOLL_SHIM_INCLUDE_DIR})
+    string(JOIN " " EPOLL_LIB "${EPOLL_SHIM_LIB}")
+  endif()
+endif()
+
 ##############################################################################
 # subdirs - order matters
 ##############################################################################
 option(VPP_HOST_TOOLS_ONLY "Build only host tools" OFF)
 if(VPP_HOST_TOOLS_ONLY)
   set(SUBDIRS tools/vppapigen cmake)
-elseif("${CMAKE_SYSTEM_NAME}" STREQUAL "Linux")
+  install(
+    PROGRAMS
+    vpp-api/vapi/vapi_c_gen.py
+    vpp-api/vapi/vapi_cpp_gen.py
+    vpp-api/vapi/vapi_json_parser.py
+    DESTINATION ${VPP_RUNTIME_DIR}
+    COMPONENT vpp-dev
+  )
+elseif(${CMAKE_SYSTEM_NAME} MATCHES "Linux|FreeBSD")
   find_package(OpenSSL)
   set(SUBDIRS
     vppinfra svm vlib vlibmemory vlibapi vnet vpp vat vat2 vcl vpp-api
@@ -263,11 +352,12 @@ mark_as_advanced(CLEAR
 # print configuration
 ##############################################################################
 message(STATUS "Configuration:")
+pr("VPP platform" ${VPP_PLATFORM_NAME})
 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" ${CMAKE_C_COMPILER})
+pr("C compiler" "${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}})
@@ -276,3 +366,4 @@ 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})
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