Re: [PATCH, v2 1/2] xfstests: a few fixes to Makefile

[Eric Sandeen <sandeen@sandeen.net>]

On 3/9/11 12:37 PM, Alex Elder wrote:
> Change the top-level Makefile, to make it clearer just what makes
> what, and what depends on what:
> - Separate the rules for "configure" and "include/builddefs" into
>   two parts, each of which generate one of the files
> - Get rid of the rule for include/config.h, and group it with the
>   one for include/builddefs (the same command creates both files)
> 
> Having done this, we find that having both "include/builddefs" and
> "include/config.h" as dependencies for the default target results in
> a parallel invocation of "make" spawning two concurrent attempts to
> do the configure step--and that doesn't work.
> 
> Creating one of those two will result in the other getting created,
> so just list one of them as a dependency for the default rule.
> 
> A couple of other small fixes:
> - Get rid of the "new", "remake" and "check" dependencies for the
>   default rule, which serve no purpose
> - Use the $(Q) convention in a few missed spots
> - Stop a DMAPI-only comment from getting echoed on default build
> 
> This updated version folds in the content of a patch previously
> posted separately to fix the problem with parallel builds.
> 
> Signed-off-by: Alex Elder <aelder@sgi.com>

Reviewed-by: Eric Sandeen <sandeen@sandeen.net>

> ---
>  Makefile |   23 ++++++++++-------------
>  1 file changed, 10 insertions(+), 13 deletions(-)
> 
> Index: b/Makefile
> ===================================================================
> --- a/Makefile
> +++ b/Makefile
> @@ -39,14 +39,14 @@ TOOL_SUBDIRS = ltp src m4
>  
>  SUBDIRS = $(LIB_SUBDIRS) $(TOOL_SUBDIRS)
>  
> -default: include/builddefs include/config.h $(DMAPI_MAKEFILE) new remake check $(TESTS)
> +default: include/builddefs $(DMAPI_MAKEFILE) $(TESTS)
>  ifeq ($(HAVE_BUILDDEFS), no)
>  	$(Q)$(MAKE) $(MAKEOPTS) $@
>  else
>  	$(Q)$(MAKE) $(MAKEOPTS) $(SUBDIRS)
> +ifeq ($(HAVE_DMAPI), true)
>  	# automake doesn't always support "default" target 
>  	# so do dmapi make explicitly with "all"
> -ifeq ($(HAVE_DMAPI), true)
>  	$(Q)$(MAKE) $(MAKEOPTS) -C $(TOPDIR)/dmapi all
>  endif
>  endif
> @@ -60,22 +60,19 @@ else
>  clean:  # if configure hasn't run, nothing to clean
>  endif
>  
> -configure include/builddefs:
> +configure: configure.in
>  	autoheader
>  	autoconf
> +
> +include/builddefs include/config.h: configure
>  	./configure \
>                  --libexecdir=/usr/lib \
>                  --enable-lib64=yes
>  
> -include/config.h: include/builddefs
> -## Recover from the removal of $@
> -	@if test -f $@; then :; else \
> -		rm -f include/builddefs; \
> -		$(MAKE) $(AM_MAKEFLAGS) include/builddefs; \
> -	fi
> -
> +ifeq ($(HAVE_DMAPI), true)
>  $(DMAPI_MAKEFILE):
> -	cd $(TOPDIR)/dmapi/ ; ./configure
> +	$(Q)cd $(TOPDIR)/dmapi && ./configure
> +endif
>  
>  aclocal.m4::
>  	aclocal --acdir=`pwd`/m4 --output=$@
> @@ -97,5 +94,5 @@ install-dev install-lib:
>  	$(MAKE) $(MAKEOPTS) -C $* install
>  
>  realclean distclean: clean
> -	rm -f $(LDIRT) $(CONFIGURE)
> -	rm -rf autom4te.cache Logs
> +	$(Q)rm -f $(LDIRT) $(CONFIGURE)
> +	$(Q)rm -rf autom4te.cache Logs
> 

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