Add summary of compiler flags for foam-python

use -march=native in Python code.

CMakeLists.txt

@@ -7,6 +7,10 @@
 cmake_minimum_required(VERSION 3.13)
 project(extra-foam LANGUAGES CXX)
 
+message(STATUS "    C++ flags (Release):        ${CMAKE_CXX_FLAGS} ")
+message(STATUS "    C++ flags (Release):        ${CMAKE_CXX_FLAGS_DEBUG} ")
+message(STATUS "    C++ flags (Release):        ${CMAKE_CXX_FLAGS_RELEASE}")
+
 set(CMAKE_CXX_STANDARD 14)
 set(CMAKE_CXX_STANDARD_REQUIRED ON)
 set(CMAKE_CXX_EXTENSIONS OFF)
@@ -146,6 +150,17 @@ if(BUILD_FOAM_TESTS)
     add_subdirectory(test)
 endif()
 
+# ============
+# Build flags
+# ============
+
+if(CMAKE_CXX_COMPILER_VERSION)
+    set(FOAM_COMPILER_STR "${CMAKE_CXX_COMPILER} ${CMAKE_CXX_COMPILER_ARG1} (version ${CMAKE_CXX_COMPILER_VERSION})")
+else()
+    set(FOAM_COMPILER_STR "${CMAKE_CXX_COMPILER} ${CMAKE_CXX_COMPILER_ARG1}")
+endif()
+string(STRIP "${FOAM_COMPILER_STR}" FOAM_COMPILER_STR)
+
 # ============
 # Installation
 # ============

src/extra_foam/CMakeLists.txt

@@ -4,6 +4,33 @@
 # All rights reserved.                                            #
 ###################################################################
 
+# ============
+# Build flags
+# ============
+
+if (CMAKE_CXX_COMPILER_ID MATCHES "Clang" OR CMAKE_CXX_COMPILER_ID MATCHES "GNU" OR CMAKE_CXX_COMPILER_ID MATCHES "Intel")
+    if(NOT CMAKE_CXX_FLAGS MATCHES "-march")
+        set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -march=native")
+    endif()
+endif()
+
+message(STATUS "=========================== EXtra-foam Python ============================")
+message(STATUS "")
+message(STATUS "    C++ Compiler:               ${FOAM_COMPILER_STR}")
+message(STATUS "    C++ flags (Release):        ${CMAKE_CXX_FLAGS} ${CMAKE_CXX_FLAGS_RELEASE}")
+message(STATUS "    C++ flags (Debug):          ${CMAKE_CXX_FLAGS} ${CMAKE_CXX_FLAGS_DEBUG}")
+message(STATUS "    Linker flags (Release):     ${CMAKE_SHARED_LINKER_FLAGS} ${CMAKE_SHARED_LINKER_FLAGS_RELEASE}")
+message(STATUS "    Linker flags (Debug):       ${CMAKE_SHARED_LINKER_FLAGS} ${CMAKE_SHARED_LINKER_FLAGS_DEBUG}")
+message(STATUS "")
+message(STATUS "    USE TBB in FOAM/XTENSOR:    ${FOAM_USE_TBB}/${XTENSOR_USE_TBB}")
+message(STATUS "    USE XSIMD in FOAM/XTENSOR:  ${FOAM_USE_XSIMD}/${XTENSOR_USE_XSIMD}")
+message(STATUS "")
+message(STATUS "==========================================================================")
+
+# ===============
+# Build libraries
+# ===============
+
 set(_FOAM_MODULE_FILES
     f_canny.cpp
     f_datamodel.cpp

test/CMakeLists.txt

@@ -4,10 +4,6 @@
 # All rights reserved.                                            #
 ###################################################################
 
-if(NOT CMAKE_CXX_FLAGS MATCHES "-march")
-    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -march=native")
-endif()
-
 # Download and unpack googletest at configure time
 configure_file(downloadGTest.cmake.in googletest-download/CMakeLists.txt)
 
@@ -61,6 +57,20 @@ set(_FOAM_UNITTEST_TARGETS_NEED_BLAS
 
 set(CMAKE_BUILD_RPATH "${CMAKE_PREFIX_PATH}/lib")
 
+if (CMAKE_CXX_COMPILER_ID MATCHES "Clang" OR CMAKE_CXX_COMPILER_ID MATCHES "GNU" OR CMAKE_CXX_COMPILER_ID MATCHES "Intel")
+    if(NOT CMAKE_CXX_FLAGS MATCHES "-march")
+        set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -march=native")
+    endif()
+endif()
+
+if (CMAKE_CXX_COMPILER_ID MATCHES "GNU")
+    if(CMAKE_CXX_COMPILER_VERSION VERSION_GREATER "7")
+        # solve the linker error with test_tbb.cpp:
+        #     undefined reference to symbol 'clock_gettime@@GLIBC_2.2.5'
+        set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -lrt")
+    endif()
+endif()
+
 foreach(pathname IN LISTS _FOAM_UNITTESTS)
     get_filename_component(filename ${pathname} NAME)
     string(REPLACE ".cpp" "" targetname ${filename})