git: 9c59d7533731 - stable/12 - libpmc: fix linking with C programs

[Alan Somers]

The branch stable/12 has been updated by asomers:

URL: https://cgit.FreeBSD.org/src/commit/?id=9c59d753373189f83b4447fe6a5456573451e014

commit 9c59d753373189f83b4447fe6a5456573451e014
Author:     Alan Somers <asomers at FreeBSD.org>
AuthorDate: 2021-02-21 20:56:57 +0000
Commit:     Alan Somers <asomers at FreeBSD.org>
CommitDate: 2021-02-22 05:23:12 +0000

    libpmc: fix linking with C programs
    
    Revision r334749 Added some C++ code to libpmc.  It didn't change the ABI,
    but it did introduce a dependency on libc++.  Nobody noticed because every
    program that in the base system that uses libpmc is also C++.
    
    Reported-by:    Dom Dwyer <dom at itsallbroken.com>
    Reviewed By:    vangyzen
    Differential Revision: https://reviews.freebsd.org/D28550
    
    (cherry picked from commit 04e34c0202ea50cea67d5779f54bc612c74e6532)
---
 lib/libpmc/Makefile | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/lib/libpmc/Makefile b/lib/libpmc/Makefile
index 35bacb26bd11..1e204e13fdb2 100644
--- a/lib/libpmc/Makefile
+++ b/lib/libpmc/Makefile
@@ -8,6 +8,12 @@ INCS=	pmc.h pmclog.h pmcformat.h
 
 CFLAGS+= -I${.CURDIR}
 CWARNFLAGS.gcc+= -Wno-shadow -Wno-cast-align
+.include <bsd.compiler.mk>
+.if ${COMPILER_TYPE} == "gcc"
+LDADD+=	-lstdc++
+.else
+LDADD+=	-lc++
+.endif
 
 .if ${MACHINE_ARCH} == "amd64" || ${MACHINE_ARCH} == "i386"