build: compiler flags handling cleanup

Type: make
Change-Id: I51f30edb91e09525ba116fe3941f2e43f9718da7
Signed-off-by: Damjan Marion <damarion@cisco.com>

6 files changed, 50 insertions, 50 deletions

diff --git a/configure b/configure
index 369adedaab8..7d9b017252d 100755
--- a/configure
+++ b/configure
@@ -80,6 +80,7 @@ cmake \
   -B ${build_dir} \
   -DCMAKE_PREFIX_PATH=${prefix_path} \
   -DCMAKE_INSTALL_PREFIX=${install_dir} \
+  -DCMAKE_EXPORT_COMPILE_COMMANDS:BOOL=ON \
   -DCMAKE_BUILD_TYPE:STRING=${build_type}
 
   cat << __EOF__
@@ -89,7 +90,6 @@ cmake \
   ninja                   Build VPP
   ninja set-build-type-*  Change build type to <debug|release|gcov|...>
   ninja config            Start build configuration TUI
-  ninja compdb            Generate compile_commands.json
   ninja run               Runs VPP using startup.conf in the build directory
   ninja debug             Runs VPP inside GDB using startup.conf in the build directory
   ninja pkg-deb           Create .deb packages
diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index 635b663252c..ebf03bdad61 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -25,7 +25,13 @@ set(CMAKE_C_COMPILER_NAMES
 
 project(vpp C)
 
-set(CMAKE_EXPORT_COMPILE_COMMANDS on)
+if(CMAKE_VERSION VERSION_LESS 3.12)
+  macro(add_compile_definitions defs)
+    foreach(d ${defs})
+      add_compile_options(-D${d})
+    endforeach()
+  endmacro()
+endif()
 
 include(CheckCCompilerFlag)
 include(CheckIPOSupported)
@@ -69,49 +75,35 @@ set(CMAKE_LIBRARY_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/${VPP_LIBRARY_DIR})
 set(VPP_BINARY_DIR ${CMAKE_BINARY_DIR}/CMakeFiles)
 
 if (CMAKE_BUILD_TYPE)
-  set(CMAKE_C_FLAGS "-g -fPIC -Werror -Wall ${CMAKE_C_FLAGS}")
+  add_compile_options(-g -fPIC -Werror -Wall)
 endif()
 
 if (compiler_flag_no_address_of_packed_member)
-  set(CMAKE_C_FLAGS "-Wno-address-of-packed-member ${CMAKE_C_FLAGS}")
+  add_compile_options(-Wno-address-of-packed-member)
 endif()
 
-# release
-list(APPEND BUILD_TYPES "release")
-string(CONCAT CMAKE_C_FLAGS_RELEASE
-  "-O3 "
-  "-fstack-protector "
-  "-D_FORTIFY_SOURCE=2 "
-  "-fno-common "
-)
-
-string(CONCAT CMAKE_EXE_LINKER_FLAGS_RELEASE "-pie")
-
-# debug
-list(APPEND BUILD_TYPES "debug")
-string(CONCAT CMAKE_C_FLAGS_DEBUG
-  "-O0 "
-  "-DCLIB_DEBUG "
-  "-fstack-protector "
-  "-fno-common "
-)
-
-# coverity
-list(APPEND BUILD_TYPES "coverity")
-string(CONCAT CMAKE_C_FLAGS_COVERITY "-O2 -D__COVERITY__")
-
-# gcov
-list(APPEND BUILD_TYPES "gcov")
-string(CONCAT CMAKE_C_FLAGS_GCOV
-  "-O0 "
-  "-DCLIB_DEBUG "
-  "-DCLIB_GCOV "
-  "-fprofile-arcs "
-  "-ftest-coverage ")
-
+string(TOLOWER "${CMAKE_BUILD_TYPE}" CMAKE_BUILD_TYPE_LC)
 string(TOUPPER "${CMAKE_BUILD_TYPE}" CMAKE_BUILD_TYPE_UC)
 
+set(CMAKE_C_FLAGS_RELEASE "")
+set(CMAKE_C_FLAGS_DEBUG "")
+
+if (${CMAKE_BUILD_TYPE_LC} MATCHES "release")
+  add_compile_options(-O3 -fstack-protector -fno-common)
+  add_compile_definitions(_FORTIFY_SOURCE=2)
+  string(CONCAT CMAKE_EXE_LINKER_FLAGS_RELEASE "-pie")
+elseif (${CMAKE_BUILD_TYPE_LC} MATCHES "debug")
+  add_compile_options(-O0 -fstack-protector -fno-common)
+  add_compile_definitions(CLIB_DEBUG)
+elseif (${CMAKE_BUILD_TYPE_LC} MATCHES "coverity")
+  add_compile_options(-O0)
+  add_compile_definitions(__COVERITY__)
+elseif (${CMAKE_BUILD_TYPE_LC} MATCHES "gcov")
+  add_compile_options(-O0 -fprofile-arcs -ftest-coverage)
+  add_compile_definitions(CLIB_DEBUG CLIB_GCOV)
+endif()
 
+set(BUILD_TYPES release debug coverity gcov)
 string(REPLACE ";" " " BUILD_TYPES_STR "${BUILD_TYPES}")
 set_property(CACHE CMAKE_BUILD_TYPE PROPERTY
 	     HELPSTRING "Build type - valid options are: ${BUILD_TYPES_STR}")
@@ -138,7 +130,8 @@ set(VPP_SANITIZE_ADDR_OPTIONS
 )
 
 if (VPP_ENABLE_SANITIZE_ADDR)
-  set(CMAKE_C_FLAGS "-fsanitize=address -DCLIB_SANITIZE_ADDR ${CMAKE_C_FLAGS}")
+  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}")
 endif (VPP_ENABLE_SANITIZE_ADDR)
@@ -149,7 +142,7 @@ endif (VPP_ENABLE_SANITIZE_ADDR)
 
 option(VPP_ENABLE_TRAJECTORY_TRACE "Build vpp with trajectory tracing enabled" OFF)
 if(VPP_ENABLE_TRAJECTORY_TRACE)
-  set(CMAKE_C_FLAGS "-DVLIB_BUFFER_TRACE_TRAJECTORY=1 ${CMAKE_C_FLAGS}")
+  add_compile_definitions(VLIB_BUFFER_TRACE_TRAJECTORY=1)
 endif()
 
 ##############################################################################
@@ -239,14 +232,6 @@ add_custom_target(config
   USES_TERMINAL
 )
 
-add_custom_target(compdb
-  COMMAND ninja -C ${CMAKE_BINARY_DIR} -t compdb |
-          ${CMAKE_SOURCE_DIR}/scripts/compdb_cleanup.py >
-	  ${CMAKE_BINARY_DIR}/compile_commands.json
-  COMMENT "Generating compile_commands.json"
-  USES_TERMINAL
-)
-
 foreach(bt ${BUILD_TYPES})
   add_custom_target(set-build-type-${bt}
     COMMAND cmake -DCMAKE_BUILD_TYPE:STRING=${bt} .
@@ -255,6 +240,16 @@ foreach(bt ${BUILD_TYPES})
   )
 endforeach()
 
+mark_as_advanced(CLEAR
+  CMAKE_C_FLAGS
+  CMAKE_C_COMPILER
+  CMAKE_EXPORT_COMPILE_COMMANDS
+  CMAKE_INSTALL_PREFIX
+  CMAKE_LINKER
+  CMAKE_SHARED_LINKER_FLAGS
+  CMAKE_VERBOSE_MAKEFILE
+)
+
 ##############################################################################
 # print configuration
 ##############################################################################
diff --git a/src/cmake/cpu.cmake b/src/cmake/cpu.cmake
index 539f7c803a9..f4a57a34281 100644
--- a/src/cmake/cpu.cmake
+++ b/src/cmake/cpu.cmake
@@ -115,7 +115,7 @@ macro(add_vpp_march_variant v)
 endmacro()
 
 if(CMAKE_SYSTEM_PROCESSOR MATCHES "amd64.*|x86_64.*|AMD64.*")
-  set(CMAKE_C_FLAGS "-march=corei7 -mtune=corei7-avx ${CMAKE_C_FLAGS}")
+  set(VPP_DEFAULT_MARCH_FLAGS -march=corei7 -mtune=corei7-avx)
 
   add_vpp_march_variant(hsw
     FLAGS -march=haswell -mtune=haswell
@@ -138,7 +138,7 @@ if(CMAKE_SYSTEM_PROCESSOR MATCHES "amd64.*|x86_64.*|AMD64.*")
     )
   endif()
 elseif(CMAKE_SYSTEM_PROCESSOR MATCHES "^(aarch64.*|AARCH64.*)")
-  set(CMAKE_C_FLAGS "-march=armv8-a+crc ${CMAKE_C_FLAGS}")
+  set(VPP_DEFAULT_MARCH_FLAGS -march=armv8-a+crc)
 
   add_vpp_march_variant(qdf24xx
     FLAGS -march=armv8-a+crc+crypto -mtune=qdf24xx
@@ -198,7 +198,7 @@ macro(vpp_library_set_multiarch_sources lib)
       add_dependencies(${l} ${ARG_DEPENDS})
     endif()
     set_target_properties(${l} PROPERTIES POSITION_INDEPENDENT_CODE ON)
-    target_compile_options(${l} PUBLIC "-DCLIB_MARCH_VARIANT=${VARIANT}")
+    target_compile_definitions(${l} PUBLIC CLIB_MARCH_VARIANT=${VARIANT})
     separate_arguments(VARIANT_FLAGS)
     target_compile_options(${l} PUBLIC ${VARIANT_FLAGS})
     target_sources(${lib} PRIVATE $<TARGET_OBJECTS:${l}>)
diff --git a/src/cmake/exec.cmake b/src/cmake/exec.cmake
index 7bfd5751c83..3ccbeee751c 100644
--- a/src/cmake/exec.cmake
+++ b/src/cmake/exec.cmake
@@ -20,6 +20,7 @@ macro(add_vpp_executable exec)
   )
 
   add_executable(${exec} ${ARG_SOURCES})
+  target_compile_options(${exec} PUBLIC ${VPP_DEFAULT_MARCH_FLAGS})
   if(ARG_LINK_LIBRARIES)
     target_link_libraries(${exec} ${ARG_LINK_LIBRARIES})
   endif()
diff --git a/src/cmake/library.cmake b/src/cmake/library.cmake
index 5a7d2cdfef7..560b2c97d5c 100644
--- a/src/cmake/library.cmake
+++ b/src/cmake/library.cmake
@@ -22,6 +22,7 @@ macro(add_vpp_library lib)
   set (lo ${lib}_objs)
   add_library(${lo} OBJECT ${ARG_SOURCES})
   set_target_properties(${lo} PROPERTIES POSITION_INDEPENDENT_CODE ON)
+  target_compile_options(${lo} PUBLIC ${VPP_DEFAULT_MARCH_FLAGS})
 
   add_library(${lib} SHARED)
   target_sources(${lib} PRIVATE $<TARGET_OBJECTS:${lo}>)
@@ -118,6 +119,7 @@ macro(add_vpp_test_library lib)
     get_filename_component(name ${file} NAME_WE)
     set(test_lib ${lib}_${name}_plugin)
     add_library(${test_lib} SHARED ${file}_test2.c)
+    target_compile_options(${test_lib} PUBLIC ${VPP_DEFAULT_MARCH_FLAGS})
     if(NOT VPP_EXTERNAL_PROJECT)
       add_dependencies(${test_lib} api_headers)
     endif()
diff --git a/src/cmake/plugin.cmake b/src/cmake/plugin.cmake
index 8038dfa1981..b399470db02 100644
--- a/src/cmake/plugin.cmake
+++ b/src/cmake/plugin.cmake
@@ -45,6 +45,7 @@ macro(add_vpp_plugin name)
     )
   endforeach()
   add_library(${plugin_name} SHARED ${api_includes} ${PLUGIN_SOURCES})
+  target_compile_options(${plugin_name} PUBLIC ${VPP_DEFAULT_MARCH_FLAGS})
   set_target_properties(${plugin_name} PROPERTIES NO_SONAME 1)
   target_compile_options(${plugin_name} PRIVATE "-fvisibility=hidden")
   target_compile_options (${plugin_name} PRIVATE "-ffunction-sections")
@@ -90,6 +91,7 @@ macro(add_vpp_plugin name)
     set(test_plugin_name ${name}_test_plugin)
     add_library(${test_plugin_name} SHARED ${PLUGIN_API_TEST_SOURCES}
 		${api_includes})
+    target_compile_options(${test_plugin_name} PUBLIC ${VPP_DEFAULT_MARCH_FLAGS})
     set_target_properties(${test_plugin_name} PROPERTIES NO_SONAME 1)
     if(NOT VPP_EXTERNAL_PROJECT)
       add_dependencies(${test_plugin_name} api_headers)