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Make Mac OS X portability and compatibility options overridable 

To allow personal builds on Mac OS X on 10.7 where no 10.9 SDK is
available, the key options have been made CMake ached variables so
that they may be overridden at configure time.

Merged from wsjtx-1.4 branch.



git-svn-id: svn+ssh://svn.code.sf.net/p/wsjt/wsjt/branches/wsjtx@4585 ab8295b8-cf94-4d9e-aec4-7959e3be5d79
This commit is contained in:
Bill Somerville 2014-11-04 20:59:51 +00:00
parent 1cf6756138
commit deb94dde78
1 changed files with 24 additions and 2 deletions
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26
CMakeLists.txt
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@ -446,9 +446,31 @@ if (WIN32)
set (CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -fno-keep-inline-dllexport")
endif (WIN32)
if (APPLE)
#
# The following variables define the portability and compatability attributes of the Mac OS X build
# they are choosen with care and should not be changed without good cause. Note that they preclude
# doing a default build on OS X 10.7 since there is no 10.9 SDK available for Mac OS X 10.7. This doesn't
# preclude builds on newer versions of OS X being installed on Mac OS X 10.7, in fact it is exacty these
# options that ensure offcial build run on 10.7 and newer versions of Mac OS X. At some point it may
# be that some new version cannot be supported as well as 10.7, at that point the deployment target below
# must be moved on to 10.8 and we can no longer support Mac OS X 10.7.
#
# Among other things these options are chosen to match the portability and compatability options of the
# Qt framework dylibs which can be checked as follows:
#
# otool -l <binary> | grep -A3 LC_VERSION_MIN_MACOSX
#
set (CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -stdlib=libc++")
set (CMAKE_OSX_DEPLOYMENT_TARGET 10.7) # Earliest version we can support with C++11 & libc++
set (CMAKE_OSX_SYSROOT /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.9.sdk)
set (CMAKE_OSX_DEPLOYMENT_TARGET 10.7
CACHE STRING "Earliest version of OS X supported
Earliest version we can support with C++11 & libc++ is 10.7.
Do not override this if you intend to build an official deployable installer.")
set (CMAKE_OSX_SYSROOT /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.9.sdk
CACHE STRING "Mac OS X SDK to build with
Change this to the newest SDK available that you can install on your system (10.9 preferred).
Do not override this if you intend to build an official deployable installer.")
else (APPLE)
set (CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -pthread")
set (CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -pthread")