casa-mp-base

# add all working Clang compilers to the variable compilers based on ${os.major}

​

# does Clang work on all i386 and x86_64 systems?

# according to https://packages.macports.org/clang-7.0/,

#    clang builds back to Mac OS X 10.6

lappend compilers macports-clang-8.0

lappend compilers macports-clang-7.0

lappend compilers macports-clang-6.0

lappend compilers macports-clang-5.0

if {${os.major} < 18} {

    # see https://github.com/macports/macports-ports/commit/d387f4e4a47b298b1775ea8bf61772e2c2e6cd8b

    lappend compilers macports-clang-4.0

    if {${os.major} < 17} {

    # The High Sierra SDK requires a toolchain that can apply nullability to uuid_t

    lappend compilers macports-clang-3.9

    if {${os.major} < 16} {

        # The Sierra SDK requires a toolchain that supports class properties

        lappend compilers macports-clang-3.7

        lappend compilers macports-clang-3.4

        if {${os.major} < 9} {

        lappend compilers macports-clang-3.3

        }

    }

    }

}