How can I highlight the warning and error lines in the make output?

Question

Sometimes, make\'s output fills the screen. It\'s a little bit hard to identify all the warning and error message lines. I know may shell color output can help Can anyone can he

Answer 1

How about the following?

It is produced by a simplified version of this Makefile.

PROJECT = programname
SHELL   = /bin/bash
OBJS    = $(patsubst src/%.cc,obj/%.o,$(wildcard src/*.cc))

RESET          = \033[0m
make_std_color = \033[3$1m      # defined for 1 through 7
make_color     = \033[38;5;$1m  # defined for 1 through 255
WRN_COLOR = $(strip $(call make_std_color,3))
ERR_COLOR = $(strip $(call make_std_color,1))
STD_COLOR = $(strip $(call make_color,8))

COLOR_OUTPUT = 2>&1 |                                   \
    while IFS='' read -r line; do                       \
        if  [[ $$line == *:[\ ]error:* ]]; then         \
            echo -e "$(ERR_COLOR)$${line}$(RESET)";     \
        elif [[ $$line == *:[\ ]warning:* ]]; then      \
            echo -e "$(WRN_COLOR)$${line}$(RESET)";     \
        else                                            \
            echo -e "$(STD_COLOR)$${line}$(RESET)";     \
        fi;                                             \
    done; exit $${PIPESTATUS[0]};

.PHONY: $(PROJECT)

$(PROJECT): bin/$(PROJECT)

bin/$(PROJECT): $(OBJS)
    @mkdir -p bin
    @echo g++ -o $@ $(OBJS) -Iinclude
    @g++ -o $@ $(OBJS) -Iinclude $(COLOR_OUTPUT)

obj/%.o: src/%.cc
    @mkdir -p obj
    @echo g++ -o $@ -c $< -Wall -Wextra
    @g++ -o $@ -c $< -Wall -Wextra $(COLOR_OUTPUT)

It assumes all C++ source files are in the src directory (extention .cc) and header files are in the include directory.