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libpmc: Use LIB_CXX instead of explicit LDADD to link a C++ library.

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This uses the C++ compiler as the linker instead of the C compiler
letting the compiler driver pick the right libraries.  This is a no-op
on main and stable/13 but matters for stable/12 where the current
logic breaks for external GCC since it tries to use a non-existent
libstdc++.

Reviewed by:	emaste
MFC after:	1 week
Differential Revision:	https://reviews.freebsd.org/D39197
This commit is contained in:
John Baldwin 2023-03-23 09:31:29 -07:00
parent e2427c6917
commit c6b3f47fed
1 changed files with 1 additions and 2 deletions
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3
lib/libpmc/Makefile
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@ -1,12 +1,11 @@
# $FreeBSD$
LIB= pmc
LIB_CXX= pmc
SRCS= libpmc.c pmclog.c libpmc_pmu_util.c libpmc_json.cc
INCS= pmc.h pmclog.h pmcformat.h
CFLAGS+= -I${SRCTOP}/${RELDIR:H}/libpmcstat
LDADD+= -lc++
.if ${MACHINE_CPUARCH} == "aarch64"
EVENT_ARCH="arm64"