5
2
I compiled GCC 4.4.3 and installed it in /usr/local/bin, but whenever I install a port via MacPorts 1.8.2 the verbose output says MacPorts is using /usr/bin/gcc-4.2:
checking for gcc... /usr/bin/gcc-4.2
How do I make MacPorts find my own GCC 4.4.3? Here is my existing path:
/opt/local/bin:/opt/local/sbin:/usr/local/bin:/usr/local/lib:/usr/bin:/bin:/usr/sbin:/sbin:/usr/local/bin:/usr/X11/bin
I am running Mac OS X 10.6.2 Snow Leopard.
hpy
Posted 2010-03-28T18:23:02.930
Reputation: 5 269
3
First answer: Don't! In my experience, GCC 4.4.3 will not work properly on Snow Leopard. It will cause problems with zero-length strings.
Second answer: edit your symbolic links in /usr/bin to refer to the 4.4 stuff. Here's a script I wrote to do so:
rm /usr/bin/c++
ln -s /usr/bin/c++-${1} /usr/bin/c++
rm /usr/bin/cc
ln -s /usr/bin/cc-${1} /usr/bin/cc
rm /usr/bin/cpp
ln -s /usr/bin/cpp-${1} /usr/bin/cpp
rm /usr/bin/g++
ln -s /usr/bin/g++-${1} /usr/bin/g++
rm /usr/bin/gcc
ln -s /usr/bin/gcc-${1} /usr/bin/gcc
rm /usr/bin/gcov
ln -s /usr/bin/gcov-${1} /usr/bin/gcov
I called it chgCver, so to change my compiler to 4.4, I'd type chgCver 4.4. Of course, before you run this, you'll also need to make sure that, for example, c++-4.4 points to the correct place (probably /opt/local/bin/gcc-mp-4.4), etc. I can give you more specifics, if you're inclined to ignore my first and third answers.
Third answer: Don't! (See first answer.)
Ben Hocking
Posted 2010-03-28T18:23:02.930
Reputation: 546
7
MacPorts is using Apple supplied compilers wherever possible as they are highly patched for the platform. For example, they allow to build for multiple architectures by specifying -arch flags which is not possible with FSF gcc.
If you change symlinks in /usr/bin/cc, MacPorts will still try to use flags which are only understood by the Apple version. This could make it impossible to compile anything using MacPorts.
Just trust the MacPorts developers that using Apple provided compilers is the best way.
raimue
Posted 2010-03-28T18:23:02.930
Reputation: 610
7
Set configure.compiler variable in Portfile accordingly:
configure.compiler macports-gcc-4.3
or append configure.compiler=macports-gcc-4.3 to your command.
cf. this wiki page.
anddam
Posted 2010-03-28T18:23:02.930
Reputation: 425
Is this still known to cause problems like in the other answer? Thanks! – hpy – 2010-12-11T06:08:05.223
2I wasn't able to determine what the problems were, first Google result for "gcc 4.4.3 zero lenght string problem" is this very same superuser question. – anddam – 2011-03-26T06:03:05.470
Didn't know GCC 4.4.3 had this problem, thanks! – hpy – 2010-03-28T19:10:38.193
3No need for this, just use
gcc_select. – Adam Rosenfield – 2010-12-27T14:04:41.1833As we're talking about using MacPorts there's the "gcc_select" port that will do the same job and a little more. – anddam – 2011-03-26T06:00:06.380