PHP 4.0 Bug #3636: recode library crashes AC_TRY_LINK() macro

From: kk@netuse.de Operating system: Linux valiant 2.2.13 #1 Mon Nov 8 15:37:25 CET 1999 i686 unknown PHP version: 4.0 Latest CVS (26/02/2000) PHP Bug Type: Compile Failure Bug description: recode library crashes AC_TRY_LINK() macro I tried to port the GNU recode module to PHP4, but the different build system makes that impossible. The GNU recode library is faulty in the sense that it requires the symbol program_name to be exported to link successfully. In PHP3, the build process AC_TRY_LINK()ed every library that was bind tested for individually, so that I could AC_TRY_LINK([ char *program_name; ],[ recode_format_table(); ],[],[ AC_MSG_ERROR(Cannot find librecode. Please install recode-3.5 or higher)]) for GNU recode and all other AC_TRY_LINK() for other libraries were unaffected. In PHP4, the build systems incrementally builds the library configuration so that once the recode library has been found, all subsequent AC_TRY_LINK() calls to all other libraries are linked against GNU recode as well, which requires the above program_name symbol. This symbol is not present in these calls, though, so all subsequent AC_TRY_LINK() macros fail. I request that the build system is changes to record the list of libraries in a different, nonactive variable and only builds the linker and library configuration in a final stage. Unless that is changes porting the GNU recode module will be difficult. The recode maintainer has been informed of the problem for quite some time and has promised a fix of the library in a 3.6 release, which has not yet arrived, though.