head	1.1;
branch	1.1.1;
access;
symbols
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	netbsd-11-0-RC3:1.1.1.1
	netbsd-11-0-RC2:1.1.1.1
	netbsd-11-0-RC1:1.1.1.1
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	perseant-exfatfs:1.1.1.1.0.8
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	netbsd-10-0-RC6:1.1.1.1
	netbsd-10-0-RC5:1.1.1.1
	netbsd-10-0-RC4:1.1.1.1
	netbsd-10-0-RC3:1.1.1.1
	netbsd-10-0-RC2:1.1.1.1
	netbsd-10-0-RC1:1.1.1.1
	netbsd-10:1.1.1.1.0.6
	netbsd-10-base:1.1.1.1
	cjep_sun2x-base1:1.1.1.1
	cjep_sun2x:1.1.1.1.0.4
	cjep_sun2x-base:1.1.1.1
	cjep_staticlib_x:1.1.1.1.0.2
	cjep_staticlib_x-base1:1.1.1.1
	LLVM-249b40b558955afe5ac2b549edcf2d7f859c8cc9:1.1.1.1
	LLVM:1.1.1;
locks; strict;
comment	@# @;


1.1
date	2021.05.30.01.29.21;	author joerg;	state Exp;
branches
	1.1.1.1;
next	;
commitid	ELgSWj1pehxUV6VC;

1.1.1.1
date	2021.05.30.01.29.21;	author joerg;	state Exp;
branches
	1.1.1.1.2.1;
next	;
commitid	ELgSWj1pehxUV6VC;

1.1.1.1.2.1
date	2021.05.30.01.29.21;	author cjep;	state dead;
branches;
next	1.1.1.1.2.2;
commitid	eWz9SBW0XqKjJlVC;

1.1.1.1.2.2
date	2021.05.31.22.07.37;	author cjep;	state Exp;
branches;
next	;
commitid	eWz9SBW0XqKjJlVC;


desc
@@


1.1
log
@Initial revision
@
text
@# - Compile and run code to check for C++ features
#
# This functions compiles a source file under the `cmake` folder
# and adds the corresponding `HAVE_[FILENAME]` flag to the CMake
# environment
#
#  cxx_feature_check(<FLAG> [<VARIANT>])
#
# - Example
#
# include(CXXFeatureCheck)
# cxx_feature_check(STD_REGEX)
# Requires CMake 2.8.12+

if(__cxx_feature_check)
  return()
endif()
set(__cxx_feature_check INCLUDED)

function(cxx_feature_check FILE)
  string(TOLOWER ${FILE} FILE)
  string(TOUPPER ${FILE} VAR)
  string(TOUPPER "HAVE_${VAR}" FEATURE)
  if (DEFINED HAVE_${VAR})
    set(HAVE_${VAR} 1 PARENT_SCOPE)
    add_definitions(-DHAVE_${VAR})
    return()
  endif()

  if (NOT DEFINED COMPILE_${FEATURE})
    message(STATUS "Performing Test ${FEATURE}")
    if(CMAKE_CROSSCOMPILING)
      try_compile(COMPILE_${FEATURE}
              ${CMAKE_BINARY_DIR} ${CMAKE_CURRENT_SOURCE_DIR}/cmake/${FILE}.cpp
              CMAKE_FLAGS ${BENCHMARK_CXX_LINKER_FLAGS}
              LINK_LIBRARIES ${BENCHMARK_CXX_LIBRARIES})
      if(COMPILE_${FEATURE})
        message(WARNING
              "If you see build failures due to cross compilation, try setting HAVE_${VAR} to 0")
        set(RUN_${FEATURE} 0)
      else()
        set(RUN_${FEATURE} 1)
      endif()
    else()
      message(STATUS "Performing Test ${FEATURE}")
      try_run(RUN_${FEATURE} COMPILE_${FEATURE}
              ${CMAKE_BINARY_DIR} ${CMAKE_CURRENT_SOURCE_DIR}/cmake/${FILE}.cpp
              CMAKE_FLAGS ${BENCHMARK_CXX_LINKER_FLAGS}
              LINK_LIBRARIES ${BENCHMARK_CXX_LIBRARIES})
    endif()
  endif()

  if(RUN_${FEATURE} EQUAL 0)
    message(STATUS "Performing Test ${FEATURE} -- success")
    set(HAVE_${VAR} 1 PARENT_SCOPE)
    add_definitions(-DHAVE_${VAR})
  else()
    if(NOT COMPILE_${FEATURE})
      message(STATUS "Performing Test ${FEATURE} -- failed to compile")
    else()
      message(STATUS "Performing Test ${FEATURE} -- compiled but failed to run")
    endif()
  endif()
endfunction()
@


1.1.1.1
log
@Import libc++ 249b40b558955afe5ac2b549edcf2d7f859c8cc9
@
text
@@


1.1.1.1.2.1
log
@file CXXFeatureCheck.cmake was added on branch cjep_staticlib_x on 2021-05-31 22:07:37 +0000
@
text
@d1 64
@


1.1.1.1.2.2
log
@sync with head
@
text
@a0 64
# - Compile and run code to check for C++ features
#
# This functions compiles a source file under the `cmake` folder
# and adds the corresponding `HAVE_[FILENAME]` flag to the CMake
# environment
#
#  cxx_feature_check(<FLAG> [<VARIANT>])
#
# - Example
#
# include(CXXFeatureCheck)
# cxx_feature_check(STD_REGEX)
# Requires CMake 2.8.12+

if(__cxx_feature_check)
  return()
endif()
set(__cxx_feature_check INCLUDED)

function(cxx_feature_check FILE)
  string(TOLOWER ${FILE} FILE)
  string(TOUPPER ${FILE} VAR)
  string(TOUPPER "HAVE_${VAR}" FEATURE)
  if (DEFINED HAVE_${VAR})
    set(HAVE_${VAR} 1 PARENT_SCOPE)
    add_definitions(-DHAVE_${VAR})
    return()
  endif()

  if (NOT DEFINED COMPILE_${FEATURE})
    message(STATUS "Performing Test ${FEATURE}")
    if(CMAKE_CROSSCOMPILING)
      try_compile(COMPILE_${FEATURE}
              ${CMAKE_BINARY_DIR} ${CMAKE_CURRENT_SOURCE_DIR}/cmake/${FILE}.cpp
              CMAKE_FLAGS ${BENCHMARK_CXX_LINKER_FLAGS}
              LINK_LIBRARIES ${BENCHMARK_CXX_LIBRARIES})
      if(COMPILE_${FEATURE})
        message(WARNING
              "If you see build failures due to cross compilation, try setting HAVE_${VAR} to 0")
        set(RUN_${FEATURE} 0)
      else()
        set(RUN_${FEATURE} 1)
      endif()
    else()
      message(STATUS "Performing Test ${FEATURE}")
      try_run(RUN_${FEATURE} COMPILE_${FEATURE}
              ${CMAKE_BINARY_DIR} ${CMAKE_CURRENT_SOURCE_DIR}/cmake/${FILE}.cpp
              CMAKE_FLAGS ${BENCHMARK_CXX_LINKER_FLAGS}
              LINK_LIBRARIES ${BENCHMARK_CXX_LIBRARIES})
    endif()
  endif()

  if(RUN_${FEATURE} EQUAL 0)
    message(STATUS "Performing Test ${FEATURE} -- success")
    set(HAVE_${VAR} 1 PARENT_SCOPE)
    add_definitions(-DHAVE_${VAR})
  else()
    if(NOT COMPILE_${FEATURE})
      message(STATUS "Performing Test ${FEATURE} -- failed to compile")
    else()
      message(STATUS "Performing Test ${FEATURE} -- compiled but failed to run")
    endif()
  endif()
endfunction()
@