Eugene Grosbein 5973cbeb09 lang/gprolog: recover GNU Prolog under FreeBSD. ... Update to version 1.4.5 released in 2020. Make it build and run with Clang 10: - clang has no register reservation for x86, hence patch-EnginePl_machine.h and -DNO_MACHINE_REG_FOR_REG_BANK to prevent using missing feature; - add patch-Ma2Asm_x86__64__any.c fetched from upstream SourceForge post-release commit dealing with PIC issues; - disable usage of spinlocks that results in a hang eating all available CPU cycles; fixed with -DUSE_LOCKS=1 -DUSE_RECURSIVE_LOCKS=1 -DUSE_SPIN_LOCKS=0; - the software uses bundled dlmalloc dated back 2011 that replaces functions like calloc() with own implemenations and it's calloc() sometimes fails to clear allocated memory; this results in SIGSEGV when its own hash-table implementation dereferences junk that supposed to be NULL pointer, so it fails to complete build; fixed with MMAP_CLEARS=0. PR: 231393		2020-11-23 13:26:14 +00:00
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