From faa4bcf3ce51352458080e664dc68eb408dbf87f Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Anders=20F=20Bj=C3=B6rklund?= <anders.f.bjorklund@gmail.com>
Date: Wed, 3 Oct 2018 20:25:24 +0200
Subject: Add configure option for silent make rules

Adopted from AM_SILENT_RULES, default to no
---
 Makefile.in  | 25 +++++++++++++++++++------
 configure.ac | 10 ++++++++++
 2 files changed, 29 insertions(+), 6 deletions(-)

diff --git a/Makefile.in b/Makefile.in
index dcec0af0..a4097f3a 100644
--- a/Makefile.in
+++ b/Makefile.in
@@ -1,3 +1,5 @@
+verbose = @verbose@
+
 srcdir = @srcdir@
 builddir = @builddir@
 VPATH = @srcdir@
@@ -24,6 +26,11 @@ all_cflags = $(CFLAGS)
 all_cppflags = @DEFS@ -DSYSCONFDIR=$(sysconfdir) -I. -I$(srcdir)/src -I$(builddir)/unittest $(CPPFLAGS)
 extra_libs = @extra_libs@
 
+v_at_0 = yes
+v_at_ = $(v_at_$(verbose))
+quiet := $(v_at_$(V))
+Q=$(if $(quiet),@)
+
 non_3pp_sources = \
     src/args.c \
     src/ccache.c \
@@ -95,7 +102,8 @@ files_to_distclean = Makefile config.h config.log config.status
 all: ccache$(EXEEXT)
 
 ccache$(EXEEXT): $(ccache_objs) $(extra_libs)
-	$(CC) $(all_cflags) -o $@ $(ccache_objs) $(LDFLAGS) $(extra_libs) $(LIBS)
+	$(if $(quiet),@echo "    [LD] $@")
+	$(Q)$(CC) $(all_cflags) -o $@ $(ccache_objs) $(LDFLAGS) $(extra_libs) $(LIBS)
 
 ccache.1: doc/ccache.1
 	cp $< $@
@@ -117,8 +125,10 @@ $(zlib_objs): CPPFLAGS += -include config.h
 $(zlib_objs): CFLAGS += @no_implicit_fallthrough_warning@
 
 src/zlib/libz.a: $(zlib_objs)
-	$(AR) cr $@ $(zlib_objs)
-	$(RANLIB) $@
+	$(if $(quiet),@echo "    [AR] $@")
+	$(Q)$(AR) cr $@ $(zlib_objs)
+	$(if $(quiet),@echo "    [RANLIB] $@")
+	$(Q)$(RANLIB) $@
 
 .PHONY: perf
 perf: ccache$(EXEEXT)
@@ -134,12 +144,14 @@ unittest: unittest/run$(EXEEXT)
 	unittest/run$(EXEEXT)
 
 unittest/run$(EXEEXT): $(base_objs) $(test_objs) $(extra_libs)
-	$(CC) $(all_cflags) -o $@ $(base_objs) $(test_objs) $(LDFLAGS) $(extra_libs) $(LIBS)
+	$(if $(quiet),@echo "    [LD] $@")
+	$(Q)$(CC) $(all_cflags) -o $@ $(base_objs) $(test_objs) $(LDFLAGS) $(extra_libs) $(LIBS)
 
 unittest/main.o: unittest/suites.h
 
 unittest/suites.h: $(test_suites) Makefile
-	ls $^ | grep -v Makefile | xargs sed -n 's/TEST_SUITE(\(.*\))/SUITE(\1)/p' >$@
+	$(if $(quiet),@echo "    [GEN] $@")
+	$(Q)ls $^ | grep -v Makefile | xargs sed -n 's/TEST_SUITE(\(.*\))/SUITE(\1)/p' >$@
 
 .PHONY: check
 check: test
@@ -154,6 +166,7 @@ installcheck: ccache$(EXEEXT) unittest/run$(EXEEXT)
 	CCACHE=$(bindir)/ccache CC='$(CC)' $(BASH) $(srcdir)/test/run
 
 .c.o:
-	$(CC) $(all_cppflags) $(all_cflags) -c -o $@ $<
+	$(if $(quiet),@echo "    [CC] $@")
+	$(Q)$(CC) $(all_cppflags) $(all_cflags) -c -o $@ $<
 
 @include_dev_mk@
diff --git a/configure.ac b/configure.ac
index 8dfba4bc..c1ac101d 100644
--- a/configure.ac
+++ b/configure.ac
@@ -16,6 +16,16 @@ case $host in
         ;;
 esac
 
+AC_ARG_ENABLE([silent-rules],
+  [AS_HELP_STRING([--enable-silent-rules],
+    [less verbose build output (undo: `make V=1')])])
+case $enable_silent_rules in
+	 yes) verbose=0;;
+	 no)  verbose=1;;
+	 *)   verbose=1;;
+esac
+
+AC_SUBST(verbose)
 AC_SUBST(extra_libs)
 AC_SUBST(no_implicit_fallthrough_warning)
 AC_SUBST(getopt_long_c)
-- 
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