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Merge branch 'fk/make-auto-header-dependencies' 

* fk/make-auto-header-dependencies:
  Makefile: Use computed header dependencies if the compiler supports it
This commit is contained in:
Junio C Hamano 2011-10-05 12:36:16 -07:00
parent 75abfa62fb 111ee18c31
commit 7af4d3468f
1 changed files with 9 additions and 4 deletions
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13
Makefile
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@ -250,10 +250,6 @@ all::
# DEFAULT_EDITOR='$GIT_FALLBACK_EDITOR',
# DEFAULT_EDITOR='"C:\Program Files\Vim\gvim.exe" --nofork'
#
# Define COMPUTE_HEADER_DEPENDENCIES if your compiler supports the -MMD option
# and you want to avoid rebuilding objects when an unrelated header file
# changes.
#
# Define CHECK_HEADER_DEPENDENCIES to check for problems in the hard-coded
# dependency rules.
#
@ -1242,6 +1238,15 @@ endif
ifdef CHECK_HEADER_DEPENDENCIES
COMPUTE_HEADER_DEPENDENCIES =
USE_COMPUTED_HEADER_DEPENDENCIES =
else
ifndef COMPUTE_HEADER_DEPENDENCIES
dep_check = $(shell sh -c \
'$(CC) -c -MF /dev/null -MMD -MP -x c /dev/null -o /dev/null 2>&1; \
echo $$?')
ifeq ($(dep_check),0)
COMPUTE_HEADER_DEPENDENCIES=YesPlease
endif
endif
endif
ifdef COMPUTE_HEADER_DEPENDENCIES