Date: Tue, 25 Mar 2014 22:32:13 +0000 (UTC) From: Warner Losh <imp@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r263750 - head/sys/conf Message-ID: <201403252232.s2PMWDkE031033@svn.freebsd.org>
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Author: imp Date: Tue Mar 25 22:32:13 2014 New Revision: 263750 URL: http://svnweb.freebsd.org/changeset/base/263750 Log: Add a '*' to the M modifier string so we match any -gdwarf string (even though it works w/o it for some reason, contrary to our reading of make(1)). Also add a comment explaining things a bit better so there's one less mystery that must be answered with svn blame. Submitted by: ian@ Modified: head/sys/conf/kern.mk Modified: head/sys/conf/kern.mk ============================================================================== --- head/sys/conf/kern.mk Tue Mar 25 22:08:31 2014 (r263749) +++ head/sys/conf/kern.mk Tue Mar 25 22:32:13 2014 (r263750) @@ -164,8 +164,10 @@ CFLAGS+= -fstack-protector .endif # -# Add -gdwarf-2 when compiling -g +# Add -gdwarf-2 when compiling -g on clang. The default starting in v3.4 +# is to generate DWARF version 4. However, our tools don't cope well with +# DWARF 4, so force it to genereate DWARF2, which they understand. # -.if ${COMPILER_TYPE} == "clang" && ${CFLAGS:M-g} != "" && ${CFLAGS:M-gdwarf} == "" +.if ${COMPILER_TYPE} == "clang" && ${CFLAGS:M-g} != "" && ${CFLAGS:M-gdwarf*} == "" CFLAGS+= -gdwarf-2 .endif
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