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freebsd-ports/print/openprinting
Ed Maste db43eccd90 print/openprinting: fix build when lld is the system linker
This port passes an invalid argument -Mmapfile to the linker.  Per GNU
BFD ld's manpage, link map options are -M or --print-map to print a link
map to stdout, or -Map mapfile to print a link map to mapfile.

It appears that ld.bfd accepts -Mmapfile as a synonym for -M due to some
quirk of its parser; lld simply fails with an unknown argument error.

This port's embedded copy of libtool was also too old to know that it
should pass the -fuse-ld flag from LDFLAGS through to the linker, and
also too old to match the sed expression in Mk/Uses/libtool.mk that
patches in knowledge of -fuse-ld.  Thus, patch ltmain.sh to add
-fuse-ld=bfd as a passthrough flag.

I do not know why libtool's authors believed that silently dropping
flags from a user's provided LDFLAGS was (is) a sensible thing to do.

PR:		221809
Approved by:	ler
Sponsored by:	The FreeBSD Foundation
Differential Revision:	https://reviews.freebsd.org/D14968
2018-04-05 02:43:07 +00:00
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