bsd.lib.mk: Prevent "profiling impossible" warning

The flag combination of "-pg" and "-ffunction-sections" do not mix.
GCC will emit the warning: "-ffunction-sections disabled; it makes
profiling impossible"

This simple modification to bsd.lib.mk will filter out
-ffunction-sections flag whenever it tries to build profile
objects.  The seemingly hundreds of warning in the world build
log are now gone.

diff --git a/share/mk/bsd.lib.mk b/share/mk/bsd.lib.mk
index 5d1a073..d3d9b30 100644 (file)
--- a/share/mk/bsd.lib.mk
+++ b/share/mk/bsd.lib.mk
@@ -47,12 +47,14 @@ PICFLAG=-fpic
 .endif
 
 PO_FLAG=-pg
+PO_CFLAGS=${CFLAGS:N-ffunction-sections}
+PO_CXXFLAGS=${CXXFLAGS:N-ffunction-sections}
 
 .c.o:
        ${CC} ${_${.IMPSRC:T}_FLAGS} ${CFLAGS} -c ${.IMPSRC} -o ${.TARGET}
 
 .c.po:
-       ${CC} ${_${.IMPSRC:T}_FLAGS} ${PO_FLAG} ${CFLAGS} -c ${.IMPSRC} -o ${.TARGET}
+       ${CC} ${_${.IMPSRC:T}_FLAGS} ${PO_FLAG} ${PO_CFLAGS} -c ${.IMPSRC} -o ${.TARGET}
 
 .c.So:
        ${CC} ${_${.IMPSRC:T}_FLAGS} ${PICFLAG} -DPIC ${CFLAGS} -c ${.IMPSRC} -o ${.TARGET}
@@ -61,7 +63,7 @@ PO_FLAG=-pg
        ${CXX} ${_${.IMPSRC:T}_FLAGS} ${CXXFLAGS} -c ${.IMPSRC} -o ${.TARGET}
 
 .cc.po .C.po .cpp.po .cxx.po:
-       ${CXX} ${_${.IMPSRC:T}_FLAGS} ${PO_FLAG} ${CXXFLAGS} -c ${.IMPSRC} -o ${.TARGET}
+       ${CXX} ${_${.IMPSRC:T}_FLAGS} ${PO_FLAG} ${PO_CXXFLAGS} -c ${.IMPSRC} -o ${.TARGET}
 
 .cc.So .C.So .cpp.So .cxx.So:
        ${CXX} ${_${.IMPSRC:T}_FLAGS} ${PICFLAG} -DPIC ${CXXFLAGS} -c ${.IMPSRC} -o ${.TARGET}
@@ -70,7 +72,7 @@ PO_FLAG=-pg
        ${FC} ${_${.IMPSRC:T}_FLAGS} ${FFLAGS} -o ${.TARGET} -c ${.IMPSRC} 
 
 .f.po:
-       ${FC} ${_${.IMPSRC:T}_FLAGS} -pg ${FFLAGS} -o ${.TARGET} -c ${.IMPSRC} 
+       ${FC} ${_${.IMPSRC:T}_FLAGS} ${PO_FLAG} ${FFLAGS} -o ${.TARGET} -c ${.IMPSRC}
 
 .f.So:
        ${FC} ${_${.IMPSRC:T}_FLAGS} ${PICFLAG} -DPIC ${FFLAGS} -o ${.TARGET} -c ${.IMPSRC}
@@ -79,7 +81,7 @@ PO_FLAG=-pg
        ${OBJC} ${_${.IMPSRC:T}_FLAGS} ${OBJCFLAGS} -c ${.IMPSRC} -o ${.TARGET}
 
 .m.po:
-       ${OBJC} ${_${.IMPSRC:T}_FLAGS} ${OBJCFLAGS} -pg -c ${.IMPSRC} -o ${.TARGET}
+       ${OBJC} ${_${.IMPSRC:T}_FLAGS} ${OBJCFLAGS} ${PO_FLAG} -c ${.IMPSRC} -o ${.TARGET}
 
 .m.So:
        ${OBJC} ${_${.IMPSRC:T}_FLAGS} ${PICFLAG} -DPIC ${OBJCFLAGS} -c ${.IMPSRC} -o ${.TARGET}