> The Lion buildbot was initially set up with Xcode 4.1 so the Lion packages
> were initially built with that. The buildbot has since then been updated to
> Xcode 4.3.2 but no new version/revision of gmp has been committed since then
> so the package has not been rebuilt on that.
>
> The gmp port contains this block:
>
> # llvm-gcc-4.2 fails make check
> if {${configure.compiler} == "llvm-gcc-4.2"} {
> if {[vercmp $xcodeversion 4.1] >= 0} {
> configure.compiler clang
> } else {
> configure.compiler gcc-4.2
> }
> }
>
> Xcode 4.0 and 4.1 default to llvm-gcc-4.2, so this block means on Xcode 4.1
> the compiler will be changed to clang, and on Xcode 4.0 the compiler will be
> changed to gcc-4.2.
>
> Note that the block used to read:
>
> # llvm-gcc-4.2 fails make check
> if {${configure.compiler} == "llvm-gcc-4.2"} {
> configure.compiler clang
> }
>
> But this was changed in r81117 to fix #30294. The version of clang in Xcode
> 4.0 was too old to even compile the gmp code. Perhaps the version of clang in
> Xcode 4.1 is new enough to compile the code but not new enough to do so
> correctly.
>
> If anybody here has Xcode 4.1 installed, or can install Xcode 4.1, they
> should build gmp from source as is:
>
> sudo port -ns upgrade --force gmp
I only have XCode 4.2 and 4.3, but I can confirm that gmp is
definitely the problematic package, because if I have a clean install
with only binary packages required for gcc45 on MacOS 10.7, then
things don't work, but if I use the above command to force re-install
gmp from source, it works as expected.
Cheers,
Tom
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