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makefiles/color: detect if writing to terminal.

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The current code for detecting whether colors should be used by default
was not working. Normally what programs such as git or grep do is check
if they are writing to a pipe.

To see the issue by yourself:

$ BOARD=samr21-xpro make -C tests/periph_qdec > I_SHOULD_NOT_HAVE_COLORS 2>&1

This commit uses MAKE_TERMOUT, MAKE_TERMERR and if ANY of them is NOT
a terminal, colors are disabled.
This commit is contained in:
Juan Carrano 2019-08-30 16:30:41 +02:00
parent 93fa48df71
commit 0d6a8879bc
1 changed files with 2 additions and 6 deletions
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8
makefiles/color.inc.mk
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@ -8,12 +8,8 @@ COLOR_RESET :=
COLOR_ECHO := /bin/echo
ifeq ($(CC_NOCOLOR),)
available_colors:=$(shell tput colors 2> /dev/null)
ifeq ($(available_colors),)
CC_NOCOLOR = 1
else ifeq ($(available_colors),-1)
CC_NOCOLOR = 1
else ifeq ($(available_colors),0)
IS_TERMINAL = $(if $(MAKE_TERMOUT),$(MAKE_TERMERR),)
ifeq ($(IS_TERMINAL),)
CC_NOCOLOR = 1
else
CC_NOCOLOR = 0