Epeg is a jpeg thumbnail library - I'll talk about it more another day (if I like it). Libepeg installed nicely through Darwin Ports but the perl interface wouldn't compile. Compiling gives the following errors:
mysys$ perl Makefile.PLWARNING: Setting ABSTRACT via file 'Epeg.pm' failed at /opt/local/lib/perl5/5.8.8/ExtUtils/MakeMaker.pm line 615Writing Makefile for Image::Epegmysys$ make/usr/bin/gcc-4.0 -c -I/opt/local/include -fno-common -DPERL_DARWIN -no-cpp-precomp -fno-strict-aliasing -pipe -Wdeclaration-after-statement -I/opt/local/include -O3 -DVERSION=\"0.07\" -DXS_VERSION=\"0.07\" "-I/opt/local/lib/perl5/5.8.8/darwin-2level/CORE" Epeg.cEpeg.xs:20:37: error: /usr/local/include/Epeg.h: No such file or directoryEpeg.c: In function 'XS_Image__Epeg__epeg_file_open':Epeg.c:95: error: 'Epeg_Image' undeclared (first use in this function)Epeg.c:95: error: (Each undeclared identifier is reported only onceEpeg.c:95: error: for each function it appears in.)Epeg.c:95: error: 'RETVAL' undeclared (first use in this function)Epeg.xs:73: error: parse error before ')' tokenEpeg.c: In function 'XS_Image__Epeg__epeg_memory_open':Epeg.c:117: error: 'Epeg_Image' undeclared (first use in this function)Epeg.c:117: error: 'RETVAL' undeclared (first use in this function)Epeg.xs:84: error: parse error before ')' tokenEpeg.c: In function 'XS_Image__Epeg__epeg_size_get':Epeg.c:138: error: 'Epeg_Image' undeclared (first use in this function)Epeg.c:138: error: 'img' undeclared (first use in this function)Epeg.xs:93: warning: ISO C90 forbids mixed declarations and codeEpeg.c:145: error: parse error before ')' tokenEpeg.c: In function 'XS_Image__Epeg__epeg_decode_size_set':Epeg.c:170: error: 'Epeg_Image' undeclared (first use in this function)Epeg.c:170: error: 'img' undeclared (first use in this function)Epeg.c:171: warning: ISO C90 forbids mixed declarations and codeEpeg.c:176: error: parse error before ')' tokenEpeg.c: In function 'XS_Image__Epeg__epeg_decode_colorspace_set':Epeg.c:198: error: 'Epeg_Image' undeclared (first use in this function)Epeg.c:198: error: 'img' undeclared (first use in this function)Epeg.c:199: warning: ISO C90 forbids mixed declarations and codeEpeg.c:203: error: parse error before ')' tokenEpeg.c: In function 'XS_Image__Epeg__epeg_comment_get':Epeg.c:225: error: 'Epeg_Image' undeclared (first use in this function)Epeg.c:225: error: 'img' undeclared (first use in this function)Epeg.c:226: warning: ISO C90 forbids mixed declarations and codeEpeg.c:231: error: parse error before ')' tokenEpeg.xs:121: warning: assignment makes pointer from integer without a castEpeg.c: In function 'XS_Image__Epeg__epeg_comment_set':Epeg.c:254: error: 'Epeg_Image' undeclared (first use in this function)Epeg.c:254: error: 'img' undeclared (first use in this function)Epeg.c:255: warning: ISO C90 forbids mixed declarations and codeEpeg.c:259: error: parse error before ')' tokenEpeg.c: In function 'XS_Image__Epeg__epeg_quality_set':Epeg.c:281: error: 'Epeg_Image' undeclared (first use in this function)Epeg.c:281: error: 'img' undeclared (first use in this function)Epeg.c:282: warning: ISO C90 forbids mixed declarations and codeEpeg.c:286: error: parse error before ')' tokenEpeg.c: In function 'XS_Image__Epeg__epeg_get_data':Epeg.c:309: error: 'Epeg_Image' undeclared (first use in this function)Epeg.c:309: error: 'img' undeclared (first use in this function)Epeg.xs:146: warning: ISO C90 forbids mixed declarations and codeEpeg.c:318: error: parse error before ')' tokenEpeg.xs:154: warning: pointer targets in passing argument 1 of 'Perl_newSVpv' differ in signednessEpeg.c: In function 'XS_Image__Epeg__epeg_write_file':Epeg.c:352: error: 'Epeg_Image' undeclared (first use in this function)Epeg.c:352: error: 'img' undeclared (first use in this function)Epeg.c:353: warning: ISO C90 forbids mixed declarations and codeEpeg.c:360: error: parse error before ')' tokenEpeg.c: In function 'XS_Image__Epeg__epeg_close':Epeg.c:385: error: 'Epeg_Image' undeclared (first use in this function)Epeg.c:385: error: 'img' undeclared (first use in this function)Epeg.c:389: error: parse error before ')' tokenmake: *** [Epeg.o] Error 1
Hmmm.... I scratch my head for awhile, then dug into the Makefile.PL looking for answers. You'll notice right away that the library directory is hard coded to /usr/local... I changed this, I commented this out - neither fixes the problem. I changed this back. I ran 'perl Makefile.PL' and looked in the Epeg.c file for answers. The epeg.h has its path hard coded as /usr/local/include... I tried changing this to the correct path - nada. I tried removing the path all together just leaving the header name (like it should be) - nada, still broke. Finally, I dug into Epeg.xs.... ahhhh, yes. Removing the include path from the Epeg.h header line and rerunning 'perl Makefile.PL' fixes the problem. Cheers.
