large improvement for parallel builds. works without V=99 now and without warnings...
[openwrt-10.03/.git] / include / verbose.mk
1
2 # Copyright (C) 2006 OpenWrt.org
3 #
4 # This is free software, licensed under the GNU General Public License v2.
5 # See /LICENSE for more information.
6 #
7 # $Id:$
8
9 ifeq ($(NO_TRACE_MAKE),)
10 NO_TRACE_MAKE := $(MAKE) V=99
11 export NO_TRACE_MAKE
12 endif
13
14 ifndef KBUILD_VERBOSE
15   KBUILD_VERBOSE:=0
16 endif
17 ifeq ("$(origin V)", "command line")
18   KBUILD_VERBOSE:=$(V)
19 endif
20
21 ifeq ($(IS_TTY),1)
22   _Y:=\\033[33m
23   _N:=\\033[m
24 endif
25
26 ifneq ($(KBUILD_VERBOSE),99)
27   define MESSAGE
28         printf "$(_Y)%s$(_N)\n" "$(1)" >&254
29   endef
30
31   ifeq ($(QUIET),1)
32     ifneq ($(CURDIR),$(TOPDIR))
33       _DIR:=$(patsubst $(TOPDIR)/%,%,${CURDIR})
34     else
35       _DIR:=
36     endif
37     _NULL:=$(if $(MAKECMDGOALS),$(shell \
38                 $(call MESSAGE, make[$(MAKELEVEL)]$(if $(_DIR), -C $(_DIR)) $(MAKECMDGOALS)); \
39     ))
40     SUBMAKE=$(MAKE)
41   else
42     ifeq ($(KBUILD_VERBOSE),0)
43       SILENT:=>/dev/null 2>&1
44     else
45       SILENT:=
46     endif
47     export QUIET:=1
48     SUBMAKE=cmd() { $(SILENT) $(MAKE) -s $$* || { echo "make $$*: build failed. Please re-run make with V=99 to see what's going on"; false; } } 254>&1 255>&2; cmd
49   endif
50
51   .SILENT: $(MAKECMDGOALS)
52 else
53   SUBMAKE=$(MAKE)
54   define MESSAGE
55     printf "%s\n" "$(1)"
56   endef
57 endif