PortGroup cmake

[Bradley Giesbrecht]

Hi,


Changes in cmake 2.8.10 are causing problems for the cmake PortGroup.

Setting -DCMAKE_OSX_SYSROOT=/ is a problem. I believe cmake expects CMAKE_OSX_SYSROOT to be a path to an sdk.
cmake-1.0.tcl:
...
pre-configure {
...
    configure.universal_args-append \
        -DCMAKE_OSX_ARCHITECTURES=\"[join ${configure.universal_archs} \;]\"
    if {${configure.sdkroot} != ""} {
        configure.args-append -DCMAKE_OSX_SYSROOT="${configure.sdkroot}"
    } else {
        configure.args-append -DCMAKE_OSX_SYSROOT=/
    }
}
...


The svn log for r78651 says:
...
cmake portgroup: set sysroot to / when an SDK is not needed (see #29008, #29452)
...


Would something like this be a safe replacement for the default "/":
    if {[vercmp ${xcodeversion} 4.3] < 0} {
        set sdks.path ${developer_dir}/SDKs
    } else {
        set sdks.path ${developer_dir}/Platforms/MacOSX.platform/Developer/SDKs
    }
    set os.sdk ""
    array set os.sdks {
         8  10.4u
         9  10.5
        10  10.6
        11  10.7
        12  10.8
    }
    foreach {key value} [array get os.sdks]  {
        if {${key} == ${os.major}} {
            set os.sdk ${value}
        }
    }
    if {[file exists ${sdks.path}/MacOSX${os.sdk}.sdk]} {
        configure.args-append -DCMAKE_OSX_SYSROOT:PATH=${sdks.path}/MacOSX${os.sdk}.sdk
    } else {
        configure.args-append -DCMAKE_OSX_SYSROOT:PATH=/
    }


Regards,
Bradley Giesbrecht (pixilla)

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