Propagate CONF_CFLAGS (from makeoptions) to the module build too.

Discussed with:	jhb (on arch@)

sys/conf/kern.post.mk

@@ -15,6 +15,10 @@ MKMODULESENV+=	DESTDIR="${DESTDIR}"
 SYSDIR?= ${S:C;^[^/];${.CURDIR}/&;}
 MKMODULESENV+=	KERNBUILDDIR="${.CURDIR}" SYSDIR="${SYSDIR}"
 
+.if defined(CONF_CFLAGS)
+MKMODULESENV+=	CONF_CFLAGS="${CONF_CFLAGS}"
+.endif
+
 .MAIN: all
 
 .for target in all clean cleandepend cleandir clobber depend install \

sys/conf/kmod.mk

@@ -325,6 +325,9 @@ ${_src}:
 .endfor
 .endif
 
+# Repsect configuration-specific C flags.
+CFLAGS+=	${CONF_CFLAGS}
+
 MFILES?= dev/acpica/acpi_if.m dev/acpi_support/acpi_wmi_if.m \
 	dev/agp/agp_if.m dev/ata/ata_if.m dev/eisa/eisa_if.m \
 	dev/iicbus/iicbb_if.m dev/iicbus/iicbus_if.m \