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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