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rtld: unconditionally generate map file during build

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It is needed at least to ensure that undesirable code is not linked into
rtld from libsys/libc, and adding the map file option each time is not
productive.

Reviewed by:	brooks, emaste
Sponsored by:	The FreeBSD Foundation
MFC after:	1 week
Differential revision:	https://reviews.freebsd.org/D44136
This commit is contained in:
Konstantin Belousov 2024-02-28 02:04:37 +02:00
parent 7ee47c3bb7
commit 799940154c
1 changed files with 6 additions and 0 deletions
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6
libexec/rtld-elf/Makefile
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@ -73,6 +73,12 @@ SYMBOL_MAPS+= ${RTLD_ELF_DIR}/${RTLD_ARCH}/Symbol.map
.sinclude "${RTLD_ELF_DIR}/${RTLD_ARCH}/Makefile.inc"
RTLD_ENTRY?= .rtld_start
# Always produce the map file so that may be inspected to confirm
# undesired code is not linked from libsys/libc.
MAPFILE= ld-elf.so.1.map
LDFLAGS+= -Wl,-Map=${MAPFILE} -Wl,--cref
CLEANFILES+= ${MAPFILE}
# Since moving rtld-elf to /libexec, we need to create a symlink.
# Fixup the existing binary that's there so we can symlink over it.
beforeinstall: