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Use standard C11 and C++11

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Retain GNU extensions for C99 and C++98 since testing old compilers
is especially difficult and these compilation modes exist to maintain
compatability.
This commit is contained in:
Chris Thrasher 2021-06-29 20:04:27 -06:00
parent ca8e30ed48
commit 4fc83178aa
2 changed files with 5 additions and 5 deletions
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8
CMakeLists.txt
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@ -113,15 +113,15 @@ endif()
if (NOT MSVC)
if(NOT CMAKE_CXX_FLAGS MATCHES "-std=")
# use C++11 by default if supported
check_cxx_compiler_flag("-std=gnu++11" COMPILER_SUPPORTS_CXX11)
check_cxx_compiler_flag("-std=c++11" COMPILER_SUPPORTS_CXX11)
if(COMPILER_SUPPORTS_CXX11)
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=gnu++11")
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++11")
endif()
endif()
if(NOT CMAKE_C_FLAGS MATCHES "-std=")
check_c_compiler_flag("-std=gnu11" COMPILER_SUPPORTS_C11)
check_c_compiler_flag("-std=c11" COMPILER_SUPPORTS_C11)
if(COMPILER_SUPPORTS_C11)
set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -std=gnu11")
set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -std=c11")
else()
set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -std=gnu99")
endif()

2
configure.ac
View File

@ -65,7 +65,7 @@ ZMQ_ORIG_CXXFLAGS="${CXXFLAGS:-none}"
# Checks for programs.
AC_PROG_CC
AX_CHECK_COMPILE_FLAG([-std=gnu11], [CFLAGS+=" -std=gnu11"], [AC_PROG_CC_C99])
AX_CHECK_COMPILE_FLAG([-std=c11], [CFLAGS+=" -std=c11"], [AC_PROG_CC_C99])
AC_PROG_CXX
AX_CODE_COVERAGE
AM_PROG_CC_C_O