buildsys: add support for building a profiled executable

.gitignore

@@ -1,6 +1,7 @@
 *.h.in~
 *.o
 *.og
+*.op
 *.gcno
 *.gcda
 *.gcov
@@ -27,5 +28,6 @@ core
 /configure
 /pkgconf
 /pkgconf-gcov
+/pkgconf-profile
 
 Makefile

Makefile.in

@@ -14,6 +14,7 @@ PROG			= pkgconf@EXEEXT@
 SRCS			= main.c cache.c pkg.c bsdstubs.c getopt_long.c fragment.c argvsplit.c fileio.c tuple.c dependency.c queue.c
 OBJS			= ${SRCS:.c=.o}
 GCOV_OBJS		= ${SRCS:.c=.og}
+PROF_OBJS		= ${SRCS:.c=.op}
 CFLAGS			= @CFLAGS@
 LDFLAGS			= @LDFLAGS@
 CFLAGS			+= -DLIBDIR=\"${libdir}\" -DINCLUDEDIR=\"${includedir}\" -DPKG_DEFAULT_PATH=\"${pkgconfigdir}\" -DSYSTEM_INCLUDEDIR=\"${system_includedir}\" -DSYSTEM_LIBDIR=\"${system_libdir}\" -Wall -Wextra -Wformat=2 -std=gnu99 -D_FORTIFY_SOURCE=2
@@ -47,8 +48,20 @@ gcov-check: $(PROG)-gcov
 	$(SHELL) tests/run.sh ./$(PROG)-gcov
 	@echo "gcov(1) reporting data should now be generated..."
 
+$(PROG)-profile: $(PROF_OBJS)
+	${CC} ${LDFLAGS} -pg -o $@ $(PROF_OBJS)
+
+profile-check: $(PROG)-profile
+	$(SHELL) tests/run.sh ./$(PROG)-profile
+	@echo "gprof(1) reporting data should now be generated..."
+
 .c.o:
 	${CC} ${CFLAGS} -c $< -o $@
 
 .c.og:
 	${CC} ${CFLAGS} -fprofile-arcs -ftest-coverage -c $< -o $@
+
+.c.op:
+	${CC} ${CFLAGS} -pg -c $< -o $@
+
+.SUFFIXES: .og .op