Hi,
This message is only of interest for MacOS X users that have upgraded to Lion
(MacOS X 10.7) and which to compile GNU Prolog 1.4.0 from sources.
Lion's Xcode 4.1 changes the default C compiler from gcc-4.2 to llvm-gcc-4.2.
The first part of the workaround for now is, you guessed it, to revert to
gcc-4.2 when compiling GNU Prolog. If you're using MacPorts, you can patch the
swi-prolog-devel portfile by adding the following lines:
platform darwin 11 {
configure.compiler gcc-4.2
}
If you're not using MacPorts, you should be able to set the CC environment
variable to gcc-4.2.
The issue with the default llvm-gcc-4.2 compiler (which also affects other
Prolog compilers such as YAP and SWI-Prolog) seems to be related to memory
management.
The second part of the workaround is to patch configure to make it aware of
Lion. Open the configure file in a text editor and search for the two
occurrences of the "darwin10" string, replacing it by "darwin1".
Cheers,
Paulo
-----------------------------------------------------------------
Paulo Jorge Lopes de Moura, PhD
Assistant Professor
Dep. of Computer Science, University of Beira Interior
6201-001 Covilhã, Portugal
Office 3.18 Ext. 3276
Phone: +351 275319891 Fax: +351 275319899
Email: <mailto:[email protected]>
Home page: <http://www.di.ubi.pt/~pmoura>
Research: <http://logtalk.org/> Blog: <http://blog.logtalk.org/>
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