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| author | Marian Balakowicz <m8@semihalf.com> | 2006-09-01 17:49:50 (GMT) |
|---|---|---|
| committer | Marian Balakowicz <m8@semihalf.com> | 2006-09-01 17:49:50 (GMT) |
| commit | f93286397ed2a7084efb0362a43ee09f11702349 (patch) | |
| tree | 11e0c11781ba0b867831eff47a4178a464cf00b3 /rules.mk | |
| parent | 24d3d3754634532ae262075484e7c1d00d447152 (diff) | |
| download | u-boot-f93286397ed2a7084efb0362a43ee09f11702349.tar.xz | |
Add support for a saving build objects in a separate directory.
Modifications are based on the linux kernel approach and
support two use cases:
1) Add O= to the make command line
'make O=/tmp/build all'
2) Set environement variable BUILD_DIR to point to the desired location
'export BUILD_DIR=/tmp/build'
'make'
The second approach can also be used with a MAKEALL script
'export BUILD_DIR=/tmp/build'
'./MAKEALL'
Command line 'O=' setting overrides BUILD_DIR environent variable.
When none of the above methods is used the local build is performed and
the object files are placed in the source directory.
Diffstat (limited to 'rules.mk')
| -rw-r--r-- | rules.mk | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/rules.mk b/rules.mk new file mode 100644 index 0000000..a77451b --- /dev/null +++ b/rules.mk @@ -0,0 +1,35 @@ +# +# (C) Copyright 2006 +# Wolfgang Denk, DENX Software Engineering, wd@denx.de. +# +# See file CREDITS for list of people who contributed to this +# project. +# +# This program is free software; you can redistribute it and/or +# modify it under the terms of the GNU General Public License as +# published by the Free Software Foundation; either version 2 of +# the License, or (at your option) any later version. +# +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program; if not, write to the Free Software +# Foundation, Inc., 59 Temple Place, Suite 330, Boston, +# MA 02111-1307 USA +# + +######################################################################### + +_depend: $(obj).depend + +$(obj).depend: $(src)Makefile $(TOPDIR)/config.mk $(SRCS) + @rm -f $@ + @for f in $(SRCS); do \ + g=`basename $$f | sed -e 's/\(.*\)\.\w/\1.o/'`; \ + $(CC) -M $(HOST_CFLAGS) $(CPPFLAGS) -MQ $(obj)$$g $$f >> $@ ; \ + done + +######################################################################### |