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authorDamjan Marion <damarion@cisco.com>2022-04-25 12:38:40 +0200
committerDamjan Marion <damarion@cisco.com>2022-04-25 13:49:37 +0200
commit45e05396399b7ead25d87e79a806f0c03b78965b (patch)
treebcd50ce7d197e2351d2f1d1816b9428111dd7825 /src
parent4e6222d598d5ec9db1b1e06bb3a45aca76a37daa (diff)
build: add option to build only for native CPU
Significantly reduces compilation time for uses who are interested to run binaries only on the build machine. Type: make Change-Id: I431f6f7374b6dfa8b3f7c72dc69f3d5cafd1f6bb Signed-off-by: Damjan Marion <damarion@cisco.com>
Diffstat (limited to 'src')
-rw-r--r--src/CMakeLists.txt1
-rw-r--r--src/cmake/cpu.cmake16
2 files changed, 16 insertions, 1 deletions
diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index de0c24135d7..2fb0703e174 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -299,3 +299,4 @@ 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" ${MARCH_VARIANTS_NAMES})
diff --git a/src/cmake/cpu.cmake b/src/cmake/cpu.cmake
index dbe0f17b94f..7fb7b591851 100644
--- a/src/cmake/cpu.cmake
+++ b/src/cmake/cpu.cmake
@@ -56,6 +56,16 @@ endif()
##############################################################################
# CPU optimizations and multiarch support
##############################################################################
+
+option(VPP_BUILD_NATIVE_ONLY "Build only for native CPU." OFF)
+
+if(VPP_BUILD_NATIVE_ONLY)
+ check_c_compiler_flag("-march=native" compiler_flag_march_native)
+ if(NOT compiler_flag_march_native)
+ message(FATAL_ERROR "Native-only build not supported by compiler")
+ endif()
+endif()
+
macro(add_vpp_march_variant v)
cmake_parse_arguments(ARG
"OFF"
@@ -93,6 +103,7 @@ macro(add_vpp_march_variant v)
endif()
if (VPP_MARCH_VARIANT_${uv})
list(APPEND MARCH_VARIANTS "${v}\;${fs}")
+ list(APPEND MARCH_VARIANTS_NAMES "${v}")
else()
list(APPEND MARCH_VARIANTS_DISABLED "${v}\;${fs}")
endif()
@@ -100,7 +111,10 @@ macro(add_vpp_march_variant v)
endif()
endmacro()
-if(CMAKE_SYSTEM_PROCESSOR MATCHES "amd64.*|x86_64.*|AMD64.*")
+if(VPP_BUILD_NATIVE_ONLY)
+ set(VPP_DEFAULT_MARCH_FLAGS -march=native)
+ set(MARCH_VARIANTS_NAMES "native-only")
+elseif(CMAKE_SYSTEM_PROCESSOR MATCHES "amd64.*|x86_64.*|AMD64.*")
set(VPP_DEFAULT_MARCH_FLAGS -march=corei7 -mtune=corei7-avx)
add_vpp_march_variant(hsw