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on macOS find compilers that include correct system headers closes #979

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This commit is contained in:
Scott Fennell 2020-04-06 12:56:24 -05:00
parent da4163d2c7
commit cb575b7f5e
1 changed files with 20 additions and 1 deletions
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21
CMakeLists.txt
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@ -1,10 +1,29 @@
cmake_minimum_required(VERSION 3.1) cmake_minimum_required(VERSION 3.1)
project(trick)
# trick is a C/C++ project, but we have some macOS
# configuration to do before CMake searches for compilers
project(trick NONE)
set(TRICK_MAJOR 19) set(TRICK_MAJOR 19)
set(TRICK_MINOR 2) set(TRICK_MINOR 2)
set(TRICK_TINY 0) set(TRICK_TINY 0)
# set TRICK_PRERELEASE TO EMPTY STRING "" ON RELEASE # set TRICK_PRERELEASE TO EMPTY STRING "" ON RELEASE
set(TRICK_PRERELEASE "-beta") set(TRICK_PRERELEASE "-beta")
# On macOS Mojave and Catalina, the compilers in /usr/bin
# are the ones that include the correct C standard library system headers
if(CMAKE_SYSTEM_NAME MATCHES Darwin)
if ( (NOT DEFINED CMAKE_C_COMPILER) AND (NOT DEFINED ENV{CC}) AND (EXISTS /usr/bin/cc) )
set(CMAKE_C_COMPILER /usr/bin/cc)
endif()
if ( (NOT DEFINED CMAKE_CXX_COMPILER) AND (NOT DEFINED ENV{CXX}) AND (EXISTS /usr/bin/c++) )
set(CMAKE_CXX_COMPILER /usr/bin/c++)
endif()
endif()
enable_language(C)
enable_language(CXX)
#set(CMAKE_VERBOSE_MAKEFILE ON) #set(CMAKE_VERBOSE_MAKEFILE ON)
set(CMAKE_CXX_STANDARD 11) set(CMAKE_CXX_STANDARD 11)
set(CMAKE_CXX_STANDARD_REQUIRED ON) set(CMAKE_CXX_STANDARD_REQUIRED ON)