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Date: Wed, 21 Mar 2001 23:21:51 -0800 (PST)
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Subject: misc/25984: bsd.prog.mk doesn't link C++ programs properly
Sender: owner-freebsd-bugs@FreeBSD.ORG
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>Number:         25984
>Category:       misc
>Synopsis:       bsd.prog.mk doesn't link C++ programs properly
>Confidential:   no
>Severity:       non-critical
>Priority:       low
>Responsible:    freebsd-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Wed Mar 21 23:30:02 PST 2001
>Closed-Date:
>Last-Modified:
>Originator:     Chris L. Bond
>Release:        FreeBSD 4.3-BETA i386
>Organization:
None
>Environment:
>Description:

bsd.prog.mk from /usr/share/mk/ doesn't properly link programs with C++ source
files against -lstdc++ as it should.  The majority of C++ programs hence fail to
build.

>How-To-Repeat:

Construct a Makefile in the standard bsd.prog.mk format and include C++ files in
the $SRCS variable (.cc, .C, .cxx, etc.).  Be sure to use a piece of the
C++ standard library in your code (e.g., iostreams).

>Fix:

--- /usr/src/share/mk/bsd.prog.mk.orig	Wed Mar 21 22:30:10 2001
+++ /usr/src/share/mk/bsd.prog.mk	Wed Mar 21 23:18:52 2001
@@ -27,10 +27,14 @@
 .if defined(PROG)
 .if defined(SRCS)
 
-# If there are Objective C sources, link with Objective C libraries.
+# If there are Objective C or C++ sources, link with appropriate libraries.
 .if ${SRCS:M*.m} != ""
 OBJCLIBS?= -lobjc
 LDADD+=	${OBJCLIBS}
+.endif
+.if ${SRCS:C/\.(cc\$|C\$|cxx\$|cpp\$)//} != ${SRCS}
+CXXLIBS?= -lstdc++
+LDADD+=	${CXXLIBS}
 .endif
 
 OBJS+=  ${SRCS:N*.h:R:S/$/.o/g}
>Release-Note:
>Audit-Trail:
>Unformatted:

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