[yocto] [PATCH 1/3] Makefile: add verbosity and debug options to Makefile

[Todor Minchev]

By default Makefile verbosity is disabled (V=0). Verbosity can be enabled by
setting the V environment variable to any value not equal to 0 (e.g V=1)

Example:
make clean V=1; make V=1

A debug version of the rmc binary can be built by using the debug
Makefile target. This will include debug symbols and will disable compiler
optimizations when compiling rmc.

Example:

make debug

Signed-off-by: Todor Minchev <todor.minchev at linux.intel.com>
---
 Makefile | 31 +++++++++++++++++++++----------
 1 file changed, 21 insertions(+), 10 deletions(-)

diff --git a/Makefile b/Makefile
index 9ade775..d85d8e9 100644
--- a/Makefile
+++ b/Makefile
@@ -1,5 +1,12 @@
 # Copyright (C) 2016 Jianxun Zhang <jianxun.zhang at intel.com>
 
+V ?= 0
+ifeq ($(V),0)
+  VERBOSITY = @
+else
+  VERBOSITY =
+endif
+
 TOPDIR = $(shell if [ -z "$$PWD" ]; then pwd; else echo "$$PWD"; fi)
 
 RMC_TOOL_SRC := $(wildcard src/*.c)
@@ -20,28 +27,32 @@ RMC_INSTALL_HEADER_PATH := $(RMC_INSTALL_PREFIX)/include/rmc/
 
 ALL_OBJS := $(RMC_TOOL_OBJ) $(RMC_LIB_OBJ)
 
+
 RMC_CFLAGS := -Wall -I$(TOPDIR)/inc
 
 all: rmc
+debug: RMC_CFLAGS += -DDEBUG -g -O0
+debug: rmc
 
 $(ALL_OBJS): %.o: %.c
-	@$(CC) -c $(CFLAGS) $(RMC_CFLAGS) $< -o $@
+	$(VERBOSITY)$(CC) -c $(CFLAGS) $(RMC_CFLAGS) $< -o $@
 
 librmc: $(RMC_LIB_OBJ)
-	@$(AR) rcs src/lib/$@.a $^
+	$(VERBOSITY)$(AR) rcs src/lib/$@.a $^
 
 rmc: $(RMC_TOOL_OBJ) librmc
-	@$(CC) $(CFLAGS) $(RMC_CFLAGS) -Lsrc/lib/ -lrmc $(RMC_TOOL_OBJ) src/lib/librmc.a -o src/$@
+	$(VERBOSITY)$(CC) $(CFLAGS) $(RMC_CFLAGS) -Lsrc/lib/ -lrmc $(RMC_TOOL_OBJ) \
+  src/lib/librmc.a -o src/$@
 
 clean:
-	@rm -f $(ALL_OBJS) src/rmc src/lib/librmc.a
+	$(VERBOSITY)rm -f $(ALL_OBJS) src/rmc src/lib/librmc.a
 
 .PHONY: clean rmc librmc
 
 install:
-	@mkdir -p $(RMC_INSTALL_BIN_PATH)
-	@install -m 755 src/rmc $(RMC_INSTALL_BIN_PATH)
-	@mkdir -p $(RMC_INSTALL_LIB_PATH)
-	@install -m 644 src/lib/librmc.a $(RMC_INSTALL_LIB_PATH)
-	@mkdir -p $(RMC_INSTALL_HEADER_PATH)
-	@install -m 644 $(RMC_INSTALL_HEADERS) $(RMC_INSTALL_HEADER_PATH)
+	$(VERBOSITY)mkdir -p $(RMC_INSTALL_BIN_PATH)
+	$(VERBOSITY)install -m 755 src/rmc $(RMC_INSTALL_BIN_PATH)
+	$(VERBOSITY)mkdir -p $(RMC_INSTALL_LIB_PATH)
+	$(VERBOSITY)install -m 644 src/lib/librmc.a $(RMC_INSTALL_LIB_PATH)
+	$(VERBOSITY)mkdir -p $(RMC_INSTALL_HEADER_PATH)
+	$(VERBOSITY)install -m 644 $(RMC_INSTALL_HEADERS) $(RMC_INSTALL_HEADER_PATH)
-- 
2.11.0