PATCH: libstdc++/5697

[Loren James Rittle <rittle at latour dot rsch dot comm dot mot dot com>]

Fully rebuilt libstdc++-v3 from scratch and checked install tree (with
no change in content or structure).  No 'make check' regressions on
i386-unknown-freebsd4.5.  I also manually created the race condition
seen by Brad with -j8 (by inserting a sleep in the action for
stamp-${target_alias}) and confirmed it was gone with this patch.

OK, Phil?  FYI, I think this broke when we started using $objdir
header staging.  I don't even want to know why stamp-target was being
checked in a different directory than where it was being created... ;-)

	libstdc++/5697
	* include/Makefile.am (thread_builddir): Remove (map all
	existing uses to target_builddir).
	(thread_headers): Rename to...
	(thread_target_headers): ...this.
	(stamp-thread): Remove.
	(stamp-target): Correctly state it position as built.
	Update all dependencies to match the new reality.  Remove all
	dependency calculations on directories.
	* include/Makefile.in: Rebuilt.

(Of special note: The whole reason to use stamp- files is to avoid
 creating dependencies on directories.  Thus, the comment about such
 use and all actual uses are gone.  Please inform me if I assume too
 much.)

Index: include/Makefile.am
===================================================================
RCS file: /cvs/gcc/gcc/libstdc++-v3/include/Makefile.am,v
retrieving revision 1.28
diff -c -r1.28 Makefile.am
*** Makefile.am	2002/02/12 04:35:55	1.28
--- Makefile.am	2002/02/16 01:03:20
***************
*** 284,303 ****
  	${target_builddir}/messages_members.h \
  	${target_builddir}/codecvt_specializations.h
  
! thread_builddir = ./${target_alias}/bits
! thread_headers = \
! 	${thread_builddir}/gthr.h \
! 	${thread_builddir}/gthr-single.h \
! 	${thread_builddir}/gthr-default.h
  
  # List of all timestamp files.  By keeping only one copy of this list, both
  # CLEANFILES and all-local are kept up-to-date.
  allstamps = stamp-std stamp-bits stamp-c_base stamp-backward stamp-ext \
! 	stamp-target stamp-thread 
  
  
  # Here are the rules for building the headers
! all-local: ${target_builddir}/c++config.h ${allstamps}
  
  # This rule is slightly different, in that we must change the name of the
  # local file from std_foo.h to foo.
--- 284,302 ----
  	${target_builddir}/messages_members.h \
  	${target_builddir}/codecvt_specializations.h
  
! thread_target_headers = \
! 	${target_builddir}/gthr.h \
! 	${target_builddir}/gthr-single.h \
! 	${target_builddir}/gthr-default.h
  
  # List of all timestamp files.  By keeping only one copy of this list, both
  # CLEANFILES and all-local are kept up-to-date.
  allstamps = stamp-std stamp-bits stamp-c_base stamp-backward stamp-ext \
! 	${target_builddir}/stamp-target
  
  
  # Here are the rules for building the headers
! all-local: ${target_builddir}/c++config.h ${thread_target_headers} ${allstamps}
  
  # This rule is slightly different, in that we must change the name of the
  # local file from std_foo.h to foo.
***************
*** 343,353 ****
  	(cd ${ext_builddir} && @LN_S@ $? . || true) ;\
  	echo `date` > stamp-ext
  
- # This target is special.  The timestamp on a directory gets modified
- # whenever a file it contains gets modified, and that'll throw off all the
- # build dependencies that need this target.  On the other hand, someone
- # could delete the directory and not the stamp file, faking out make.
- ${target_builddir}: stamp-${target_alias}
  stamp-${target_alias}:
  	@if [ ! -d ${target_builddir} ]; then \
  	  mkdir -p ${target_builddir} ;\
--- 342,347 ----
***************
*** 355,361 ****
  	fi
  
  # Target includes static.
! stamp-target: ${target_headers} ${target_builddir}
  	@cd ${target_builddir} ;\
  	if [ ! -f stamp-target ]; then \
  	  @LN_S@ ${target_headers} . || true ;\
--- 349,355 ----
  	fi
  
  # Target includes static.
! ${target_builddir}/stamp-target: ${target_headers} stamp-${target_alias}
  	@cd ${target_builddir} ;\
  	if [ ! -f stamp-target ]; then \
  	  @LN_S@ ${target_headers} . || true ;\
***************
*** 368,376 ****
  	fi
  
  # Target includes dynamic.
! ${target_builddir}/c++config.h: ../config.h \
  				${glibcpp_srcdir}/include/bits/c++config \
! 				${target_builddir}
  	@cat ${glibcpp_srcdir}/include/bits/c++config > $@ ;\
  	sed -e 's/HAVE_/_GLIBCPP_HAVE_/g' \
  	    -e 's/PACKAGE/_GLIBCPP_PACKAGE/g' \
--- 362,370 ----
  	fi
  
  # Target includes dynamic.
! ${target_builddir}/c++config.h: ${glibcpp_builddir}/config.h \
  				${glibcpp_srcdir}/include/bits/c++config \
! 				stamp-${target_alias}
  	@cat ${glibcpp_srcdir}/include/bits/c++config > $@ ;\
  	sed -e 's/HAVE_/_GLIBCPP_HAVE_/g' \
  	    -e 's/PACKAGE/_GLIBCPP_PACKAGE/g' \
***************
*** 383,403 ****
  glibcpp_thread_h = @glibcpp_thread_h@
  uppercase = [ABCDEFGHIJKLMNOPQRSTUVWXYZ_]
  
! stamp-thread: ${thread_headers} ${thread_builddir}
! 	@echo `date` > stamp-thread
! 
! 
! ${thread_builddir}/gthr.h:
  	sed -e '/^#/s/\(${uppercase}${uppercase}*\)/_GLIBCPP_\1/g' \
  	    -e 's,^#include "\(.*\)",#include <bits/\1>,g' \
  	    < ${toplevel_srcdir}/gcc/gthr.h > $@
  
! ${thread_builddir}/gthr-single.h:
  	sed -e 's/\(UNUSED\)/_GLIBCPP_\1/g' \
  	    -e 's/\(GCC${uppercase}*_H\)/_GLIBCPP_\1/g' \
  	    < ${toplevel_srcdir}/gcc/gthr-single.h > $@
  
! ${thread_builddir}/gthr-default.h:
  	sed -e 's/\(UNUSED\)/_GLIBCPP_\1/g' \
  	    -e 's/\(GCC${uppercase}*_H\)/_GLIBCPP_\1/g' \
  	    -e 's/\(${uppercase}*WEAK\)/_GLIBCPP_\1/g' \
--- 377,395 ----
  glibcpp_thread_h = @glibcpp_thread_h@
  uppercase = [ABCDEFGHIJKLMNOPQRSTUVWXYZ_]
  
! ${target_builddir}/gthr.h: ${toplevel_srcdir}/gcc/gthr.h stamp-${target_alias}
  	sed -e '/^#/s/\(${uppercase}${uppercase}*\)/_GLIBCPP_\1/g' \
  	    -e 's,^#include "\(.*\)",#include <bits/\1>,g' \
  	    < ${toplevel_srcdir}/gcc/gthr.h > $@
  
! ${target_builddir}/gthr-single.h: ${toplevel_srcdir}/gcc/gthr-single.h \
! 				  stamp-${target_alias}
  	sed -e 's/\(UNUSED\)/_GLIBCPP_\1/g' \
  	    -e 's/\(GCC${uppercase}*_H\)/_GLIBCPP_\1/g' \
  	    < ${toplevel_srcdir}/gcc/gthr-single.h > $@
  
! ${target_builddir}/gthr-default.h: ${toplevel_srcdir}/gcc/${glibcpp_thread_h} \
! 				   stamp-${target_alias}
  	sed -e 's/\(UNUSED\)/_GLIBCPP_\1/g' \
  	    -e 's/\(GCC${uppercase}*_H\)/_GLIBCPP_\1/g' \
  	    -e 's/\(${uppercase}*WEAK\)/_GLIBCPP_\1/g' \
***************
*** 434,444 ****
  	  $(INSTALL_DATA) ${std_builddir}/$${file} \
  	    ${gxx_include_dir}/${std_builddir}; done
  	$(INSTALL) -d ${gxx_include_dir}/${target_builddir}
! 	for file in ${target_headers} ${extra_target_headers}; do \
  	  $(INSTALL_DATA) $${file} ${gxx_include_dir}/${target_builddir}; done
- 	$(INSTALL) -d ${gxx_include_dir}/${thread_builddir}
- 	for file in ${thread_headers}; do \
- 	  $(INSTALL_DATA) $${file} ${gxx_include_dir}/${thread_builddir}; done
  
  # By adding these files here, automake will remove them for 'make clean'
  #CLEANFILES = ${allstamps}
--- 426,434 ----
  	  $(INSTALL_DATA) ${std_builddir}/$${file} \
  	    ${gxx_include_dir}/${std_builddir}; done
  	$(INSTALL) -d ${gxx_include_dir}/${target_builddir}
! 	for file in ${target_headers} ${extra_target_headers} \
! 	 ${thread_target_headers}; do \
  	  $(INSTALL_DATA) $${file} ${gxx_include_dir}/${target_builddir}; done
  
  # By adding these files here, automake will remove them for 'make clean'
  #CLEANFILES = ${allstamps}