Add -fno-common compile option

[vpp.git] / src / cmake / cpu.cmake

diff --git a/src/cmake/cpu.cmake b/src/cmake/cpu.cmake
index ef03936..60cf3b9 100644 (file)
--- a/src/cmake/cpu.cmake
+++ b/src/cmake/cpu.cmake
@@ -14,7 +14,10 @@
 ##############################################################################
 # Cache line size detection
 ##############################################################################
-if(CMAKE_SYSTEM_PROCESSOR MATCHES "^(aarch64.*|AARCH64.*)")
+if(CMAKE_CROSSCOMPILING)
+  message(STATUS "Cross-compiling - cache line size detection disabled")
+  set(VPP_LOG2_CACHE_LINE_SIZE 6)
+elseif(CMAKE_SYSTEM_PROCESSOR MATCHES "^(aarch64.*|AARCH64.*)")
   file(READ "/proc/cpuinfo" cpuinfo)
   string(REPLACE "\n" ";" cpuinfo ${cpuinfo})
   foreach(l ${cpuinfo})
@@ -25,17 +28,21 @@ if(CMAKE_SYSTEM_PROCESSOR MATCHES "^(aarch64.*|AARCH64.*)")
     string(STRIP ${value} value)
     if(${name} STREQUAL "CPU implementer")
       set(CPU_IMPLEMENTER ${value})
-     endif()
+    endif()
     if(${name} STREQUAL "CPU part")
       set(CPU_PART ${value})
-     endif()
+    endif()
   endforeach()
   # Implementer 0x43 - Cavium
   #  Part 0x0af - ThunderX2 is 64B, rest all are 128B
-  if (${CPU_IMPLEMENTER} STREQUAL "0x43" AND ${CPU_PART} STREQUAL "0x0af")
-    set(VPP_LOG2_CACHE_LINE_SIZE 6)
+  if (${CPU_IMPLEMENTER} STREQUAL "0x43")
+    if (${CPU_PART} STREQUAL "0x0af")
+      set(VPP_LOG2_CACHE_LINE_SIZE 6)
+    else()
+      set(VPP_LOG2_CACHE_LINE_SIZE 7)
+    endif()
   else()
-    set(VPP_LOG2_CACHE_LINE_SIZE 7)
+      set(VPP_LOG2_CACHE_LINE_SIZE 6)
   endif()
   math(EXPR VPP_CACHE_LINE_SIZE "1 << ${VPP_LOG2_CACHE_LINE_SIZE}")
   message(STATUS "ARM AArch64 CPU implementer ${CPU_IMPLEMENTER} part ${CPU_PART} cacheline size ${VPP_CACHE_LINE_SIZE}")
@@ -51,7 +58,6 @@ set(VPP_LOG2_CACHE_LINE_SIZE ${VPP_LOG2_CACHE_LINE_SIZE}
 ##############################################################################
 if(CMAKE_SYSTEM_PROCESSOR MATCHES "amd64.*|x86_64.*|AMD64.*")
   set(CMAKE_C_FLAGS "-march=corei7 -mtune=corei7-avx ${CMAKE_C_FLAGS}")
-  set(VPP_LIB_DIR_NAME lib64)
   check_c_compiler_flag("-march=core-avx2" compiler_flag_march_core_avx2)
   if(compiler_flag_march_core_avx2)
     list(APPEND MARCH_VARIANTS "avx2\;-march=core-avx2 -mtune=core-avx2")
@@ -62,9 +68,22 @@ 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_LIB_DIR_NAME lib64)
-else()
-  set(VPP_LIB_DIR_NAME lib)
+  check_c_compiler_flag("-march=armv8-a+crc+crypto -mtune=qdf24xx" compiler_flag_march_core_qdf24xx)
+  if(compiler_flag_march_core_qdf24xx)
+    list(APPEND MARCH_VARIANTS "qdf24xx\;-march=armv8-a+crc+crypto -DCLIB_N_PREFETCHES=8")
+  endif()
+  check_c_compiler_flag("-march=armv8.1-a+crc+crypto -mtune=thunderx2t99" compiler_flag_march_thunderx2t99)
+  if(compiler_flag_march_thunderx2t99)
+    if (CMAKE_C_COMPILER_VERSION VERSION_GREATER 7.3)
+      list(APPEND MARCH_VARIANTS "thunderx2t99\;-march=armv8.1-a+crc+crypto -mtune=thunderx2t99 -DCLIB_N_PREFETCHES=8")
+    else()
+      list(APPEND MARCH_VARIANTS "thunderx2t99\;-march=armv8.1-a+crc+crypto -DCLIB_N_PREFETCHES=8")
+    endif()
+  endif()
+  check_c_compiler_flag("-march=armv8-a+crc+crypto -mtune=cortex-a72" compiler_flag_march_cortexa72)
+  if(compiler_flag_march_cortexa72)
+    list(APPEND MARCH_VARIANTS "cortexa72\;-march=armv8-a+crc+crypto -mtune=cortex-a72 -DCLIB_N_PREFETCHES=6")
+  endif()
 endif()
 
 macro(vpp_library_set_multiarch_sources lib)
@@ -74,7 +93,7 @@ macro(vpp_library_set_multiarch_sources lib)
     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}")
+    target_compile_options(${l} PUBLIC "-DCLIB_MARCH_VARIANT=${VARIANT}" -Wall -fno-common)
     separate_arguments(VARIANT_FLAGS)
     target_compile_options(${l} PUBLIC ${VARIANT_FLAGS})
     target_sources(${lib} PRIVATE $<TARGET_OBJECTS:${l}>)