glibc/Makefile
Joseph Myers 7db1fe38de Fix testroot.pristine creation copying dynamic linker.
This patch addresses an issue reported in
<https://sourceware.org/ml/libc-alpha/2019-07/msg00661.html> where the
creation of testroot.pristine, on encountering
LD_TRACE_LOADED_OBJECTS=1 of the form

        libc.so.6 => /scratch/jmyers/glibc/mbs/obj/glibc-8-0-mips64-linux-gnu-x86_64-linux-gnu/default/libc.so.6 (0x772dd000)
        /lib32/ld.so.1 => /scratch/jmyers/glibc/mbs/obj/glibc-8-0-mips64-linux-gnu-x86_64-linux-gnu/default/elf/ld.so.1 (0x7747b000)

tries to copy /lib32/ld.so.1 (which does not exist) into the testroot
instead of copying the path on the RHS of "=>", which does exist,
because the Makefile logic assumes that the path on such a line with
'/' should be copied, when if there are such paths on both the LHS and
the RHS of "=>", only the one on the RHS necessarily exists and so
only that should be copied.  The patch follows the approach suggested
by DJ in <https://sourceware.org/ml/libc-alpha/2019-07/msg00662.html>,
with the suggestion from Andreas in
<https://sourceware.org/ml/libc-alpha/2019-10/msg00514.html> of a
single sed command in place of pipeline of grep and three sed
commands.

Tested for x86_64, with and without --enable-hardcoded-path-in-tests;
a previous version with multiple sed commands, implementing the same
logic, also tested for MIPS, with and without
--enable-hardcoded-path-in-tests, to confirm it fixes the original
problem.

Co-authored-by: DJ Delorie <dj@redhat.com>
2019-10-22 20:24:10 +00:00

690 lines
20 KiB
Makefile
Raw Blame History

This file contains invisible Unicode characters

This file contains invisible Unicode characters that are indistinguishable to humans but may be processed differently by a computer. If you think that this is intentional, you can safely ignore this warning. Use the Escape button to reveal them.

# Copyright (C) 1991-2019 Free Software Foundation, Inc.
# This file is part of the GNU C Library.
# The GNU C Library is free software; you can redistribute it and/or
# modify it under the terms of the GNU Lesser General Public
# License as published by the Free Software Foundation; either
# version 2.1 of the License, or (at your option) any later version.
# The GNU C Library 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
# Lesser General Public License for more details.
# You should have received a copy of the GNU Lesser General Public
# License along with the GNU C Library; if not, see
# <https://www.gnu.org/licenses/>.
#
# Master Makefile for the GNU C library
#
ifneq (,)
This makefile requires GNU Make.
endif
include Makeconfig
# This is the default target; it makes everything except the tests.
.PHONY: all help minihelp
all: minihelp lib others
help:
@sed '0,/^help-starts-here$$/d' Makefile.help
minihelp:
@echo
@echo type \"make help\" for help with common glibc makefile targets
@echo
ifneq ($(AUTOCONF),no)
define autoconf-it
@-rm -f $@.new
$(AUTOCONF) $(ACFLAGS) $< > $@.new
chmod a-w$(patsubst %,$(comma)a+x,$(filter .,$(@D))) $@.new
mv -f $@.new $@
endef
configure: configure.ac aclocal.m4; $(autoconf-it)
%/configure: %/configure.ac aclocal.m4; $(autoconf-it)
%/preconfigure: %/preconfigure.ac aclocal.m4; $(autoconf-it)
endif # $(AUTOCONF) = no
# We don't want to run anything here in parallel.
.NOTPARALLEL:
# These are the targets that are made by making them in each subdirectory.
+subdir_targets := subdir_lib objects objs others subdir_mostlyclean \
subdir_clean subdir_distclean subdir_realclean \
tests xtests \
subdir_update-abi subdir_check-abi \
subdir_update-all-abi \
subdir_echo-headers \
subdir_install \
subdir_objs subdir_stubs subdir_testclean \
$(addprefix install-, no-libc.a bin lib data headers others)
headers := limits.h values.h features.h gnu-versions.h \
bits/xopen_lim.h gnu/libc-version.h stdc-predef.h \
bits/libc-header-start.h
echo-headers: subdir_echo-headers
# The headers are in the include directory.
subdir-dirs = include
vpath %.h $(subdir-dirs)
# What to install.
install-others = $(inst_includedir)/gnu/stubs.h
install-bin-script =
ifeq (yes,$(build-shared))
headers += gnu/lib-names.h
endif
include Makerules
ifeq ($(build-programs),yes)
others: $(addprefix $(objpfx),$(install-bin-script))
endif
# Install from subdirectories too.
install: subdir_install
# Explicit dependency so that `make install-headers' works
install-headers: install-headers-nosubdir
# Make sure that the dynamic linker is installed before libc.
$(inst_slibdir)/libc-$(version).so: elf/ldso_install
.PHONY: elf/ldso_install
elf/ldso_install:
$(MAKE) -C $(@D) $(@F)
# Create links for shared libraries using the `ldconfig' program if possible.
# Ignore the error if we cannot update /etc/ld.so.cache.
ifeq (no,$(cross-compiling))
ifeq (yes,$(build-shared))
install: install-symbolic-link
.PHONY: install-symbolic-link
install-symbolic-link: subdir_install
$(symbolic-link-prog) $(symbolic-link-list)
rm -f $(symbolic-link-list)
install:
-test ! -x $(elf-objpfx)ldconfig || LC_ALL=C \
$(elf-objpfx)ldconfig $(addprefix -r ,$(install_root)) \
$(slibdir) $(libdir)
ifneq (no,$(PERL))
ifeq (/usr,$(prefix))
ifeq (,$(install_root))
LD_SO=$(ld.so-version) CC="$(CC)" $(PERL) scripts/test-installation.pl $(common-objpfx)
endif
endif
endif
endif
endif
# Build subdirectory lib objects.
lib-noranlib: subdir_lib
ifeq (yes,$(build-shared))
# Build the shared object from the PIC object library.
lib: $(common-objpfx)libc.so $(common-objpfx)linkobj/libc.so
endif # $(build-shared)
# Used to build testrun.sh.
define testrun-script
#!/bin/bash
builddir=`dirname "$$0"`
GCONV_PATH="$${builddir}/iconvdata"
usage () {
echo "usage: $$0 [--tool=strace] PROGRAM [ARGUMENTS...]" 2>&1
echo " $$0 --tool=valgrind PROGRAM [ARGUMENTS...]" 2>&1
exit 1
}
toolname=default
while test $$# -gt 0 ; do
case "$$1" in
--tool=*)
toolname="$${1:7}"
shift
;;
--*)
usage
;;
*)
break
;;
esac
done
if test $$# -eq 0 ; then
usage
fi
case "$$toolname" in
default)
exec $(subst $(common-objdir),"$${builddir}", $(test-program-prefix)) \
$${1+"$$@"}
;;
strace)
exec strace $(patsubst %, -E%, $(run-program-env)) \
$(test-via-rtld-prefix) $${1+"$$@"}
;;
valgrind)
exec env $(run-program-env) valgrind $(test-via-rtld-prefix) $${1+"$$@"}
;;
*)
usage
;;
esac
endef
# This is a handy script for running any dynamically linked program against
# the current libc build for testing.
$(common-objpfx)testrun.sh: $(common-objpfx)config.make \
$(..)Makeconfig $(..)Makefile
$(file >$@T,$(testrun-script))
chmod a+x $@T
mv -f $@T $@
postclean-generated += testrun.sh
define debugglibc
#!/bin/bash
SOURCE_DIR="$(CURDIR)"
BUILD_DIR="$(common-objpfx)"
CMD_FILE="$(common-objpfx)debugglibc.gdb"
DIRECT=true
SYMBOLSFILE=true
unset TESTCASE
unset BREAKPOINTS
unset ENVVARS
usage()
{
cat << EOF
Usage: $$0 [OPTIONS] <program>
Or: $$0 [OPTIONS] -- <program> [<args>]...
where <program> is the path to the program being tested,
and <args> are the arguments to be passed to it.
Options:
-h, --help
Prints this message and leaves.
The following options require one argument:
-b, --breakpoint
Breakpoints to set at the beginning of the execution
(each breakpoint demands its own -b option, e.g. -b foo -b bar)
-e, --environment-variable
Environment variables to be set with 'exec-wrapper env' in GDB
(each environment variable demands its own -e option, e.g.
-e FOO=foo -e BAR=bar)
The following options do not take arguments:
-i, --no-direct
Selects whether to pass the --direct flag to the program.
--direct is useful when debugging glibc test cases. It inhibits the
tests from forking and executing in a subprocess.
Default behaviour is to pass the --direct flag, except when the
program is run with user specified arguments using the "--" separator.
-s, --no-symbols-file
Do not tell GDB to load debug symbols from the program.
EOF
}
# Parse input options
while [[ $$# > 0 ]]
do
key="$$1"
case $$key in
-h|--help)
usage
exit 0
;;
-b|--breakpoint)
BREAKPOINTS="break $$2\n$$BREAKPOINTS"
shift
;;
-e|--environment-variable)
ENVVARS="$$2 $$ENVVARS"
shift
;;
-i|--no-direct)
DIRECT=false
;;
-s|--no-symbols-file)
SYMBOLSFILE=false
;;
--)
shift
TESTCASE=$$1
COMMANDLINE="$$@"
# Don't add --direct when user specifies program arguments
DIRECT=false
break
;;
*)
TESTCASE=$$1
COMMANDLINE=$$TESTCASE
;;
esac
shift
done
# Check for required argument
if [ ! -v TESTCASE ]
then
usage
exit 1
fi
# Expand environment setup command
if [ -v ENVVARS ]
then
ENVVARSCMD="set exec-wrapper env $$ENVVARS"
fi
# Expand direct argument
if [ "$$DIRECT" == true ]
then
DIRECT="--direct"
else
DIRECT=""
fi
# Expand symbols loading command
if [ "$$SYMBOLSFILE" == true ]
then
SYMBOLSFILE="add-symbol-file $${TESTCASE}"
else
SYMBOLSFILE=""
fi
# GDB commands template
template ()
{
cat <<EOF
set environment C -E -x c-header
set auto-load safe-path $${BUILD_DIR}/nptl_db:\$$debugdir:\$$datadir/auto-load
set libthread-db-search-path $${BUILD_DIR}/nptl_db
__ENVVARS__
__SYMBOLSFILE__
break _dl_start_user
run --library-path $(rpath-link):$${BUILD_DIR}/nptl_db \
__COMMANDLINE__ __DIRECT__
__BREAKPOINTS__
EOF
}
# Generate the commands file for gdb initialization
template | sed \
-e "s|__ENVVARS__|$$ENVVARSCMD|" \
-e "s|__SYMBOLSFILE__|$$SYMBOLSFILE|" \
-e "s|__COMMANDLINE__|$$COMMANDLINE|" \
-e "s|__DIRECT__|$$DIRECT|" \
-e "s|__BREAKPOINTS__|$$BREAKPOINTS|" \
> $$CMD_FILE
echo
echo "Debugging glibc..."
echo "Build directory : $$BUILD_DIR"
echo "Source directory : $$SOURCE_DIR"
echo "GLIBC Testcase : $$TESTCASE"
echo "GDB Commands : $$CMD_FILE"
echo "Env vars : $$ENVVARS"
echo
# Start the test case debugging in two steps:
# 1. the following command invokes gdb to run the loader;
# 2. the commands file tells the loader to run the test case.
gdb -q \
-x $${CMD_FILE} \
-d $${SOURCE_DIR} \
$${BUILD_DIR}/elf/ld.so
endef
# This is another handy script for debugging dynamically linked program
# against the current libc build for testing.
$(common-objpfx)debugglibc.sh: $(common-objpfx)config.make \
$(..)Makeconfig $(..)Makefile
$(file >$@T,$(debugglibc))
chmod a+x $@T
mv -f $@T $@
postclean-generated += debugglibc.sh debugglibc.gdb
others: $(common-objpfx)testrun.sh $(common-objpfx)debugglibc.sh
# Makerules creates a file `stubs' in each subdirectory, which
# contains `#define __stub_FUNCTION' for each function defined in that
# directory which is a stub.
# Here we paste all of these together into <gnu/stubs.h>.
subdir-stubs := $(foreach dir,$(subdirs),$(common-objpfx)$(dir)/stubs)
ifndef abi-variants
installed-stubs = $(inst_includedir)/gnu/stubs.h
else
installed-stubs = $(inst_includedir)/gnu/stubs-$(default-abi).h
$(inst_includedir)/gnu/stubs.h: $(+force)
$(make-target-directory)
{ \
echo '/* This file is automatically generated.';\
echo " This file selects the right generated file of \`__stub_FUNCTION' macros";\
echo ' based on the architecture being compiled for. */'; \
echo ''; \
$(foreach h,$(abi-includes), echo '#include <$(h)>';) \
echo ''; \
$(foreach v,$(abi-variants),\
$(if $(abi-$(v)-condition),\
echo '#if $(abi-$(v)-condition)'; \
echo '# include <gnu/stubs-$(v).h>'); \
$(if $(abi-$(v)-condition),echo '#endif';) \
rm -f $(@:.d=.h).new$(v); \
) \
} > $(@:.d=.h).new
mv -f $(@:.d=.h).new $(@:.d=.h)
install-others-nosubdir: $(installed-stubs)
endif
# Since stubs.h is never needed when building the library, we simplify the
# hairy installation process by producing it in place only as the last part
# of the top-level `make install'. It depends on subdir_install, which
# iterates over all the subdirs; subdir_install in each subdir depends on
# the subdir's stubs file. Having more direct dependencies would result in
# extra iterations over the list for subdirs and many recursive makes.
$(installed-stubs): include/stubs-prologue.h subdir_install
$(make-target-directory)
@rm -f $(objpfx)stubs.h
(sed '/^@/d' $<; LC_ALL=C sort $(subdir-stubs)) > $(objpfx)stubs.h
if test -r $@ && cmp -s $(objpfx)stubs.h $@; \
then echo 'stubs.h unchanged'; \
else $(INSTALL_DATA) $(objpfx)stubs.h $@; fi
rm -f $(objpfx)stubs.h
# This makes the Info or DVI file of the documentation from the Texinfo source.
.PHONY: info dvi pdf html
info dvi pdf html:
$(MAKE) $(PARALLELMFLAGS) -C manual $@
# This makes all the subdirectory targets.
# For each target, make it depend on DIR/target for each subdirectory DIR.
$(+subdir_targets): %: $(addsuffix /%,$(subdirs))
# Compute a list of all those targets.
all-subdirs-targets := $(foreach dir,$(subdirs),\
$(addprefix $(dir)/,$(+subdir_targets)))
# The action for each of those is to cd into the directory and make the
# target there.
$(all-subdirs-targets):
$(MAKE) $(PARALLELMFLAGS) $(subdir-target-args) $(@F)
define subdir-target-args
subdir=$(@D)$(if $($(@D)-srcdir),\
-C $($(@D)-srcdir) ..=`pwd`/,\
-C $(@D) ..=../)
endef
.PHONY: $(+subdir_targets) $(all-subdirs-targets)
# Targets to clean things up to various degrees.
.PHONY: clean realclean distclean distclean-1 parent-clean parent-mostlyclean \
tests-clean
# Subroutines of all cleaning targets.
parent-mostlyclean: common-mostlyclean # common-mostlyclean is in Makerules.
-rm -f $(foreach o,$(object-suffixes-for-libc),\
$(common-objpfx)$(patsubst %,$(libtype$o),c)) \
$(addprefix $(objpfx),$(install-lib))
parent-clean: parent-mostlyclean common-clean
postclean = $(addprefix $(common-objpfx),$(postclean-generated)) \
$(addprefix $(objpfx),sysd-dirs sysd-rules) \
$(addprefix $(objpfx),sysd-sorted soversions.mk soversions.i)
clean: parent-clean
# This is done this way rather than having `subdir_clean' be a
# dependency of this target so that libc.a will be removed before the
# subdirectories are dealt with and so they won't try to remove object
# files from it when it's going to be removed anyway.
@$(MAKE) subdir_clean no_deps=t
-rm -f $(postclean)
mostlyclean: parent-mostlyclean
@$(MAKE) subdir_mostlyclean no_deps=t
-rm -f $(postclean)
tests-clean:
@$(MAKE) subdir_testclean no_deps=t
ifneq (,$(CXX))
vpath c++-types.data $(+sysdep_dirs)
tests-special += $(objpfx)c++-types-check.out
$(objpfx)c++-types-check.out: c++-types.data scripts/check-c++-types.sh
scripts/check-c++-types.sh $< $(CXX) $(filter-out -std=gnu11 $(+gccwarn-c),$(CFLAGS)) $(CPPFLAGS) > $@; \
$(evaluate-test)
endif
tests-special += $(objpfx)check-local-headers.out
$(objpfx)check-local-headers.out: scripts/check-local-headers.sh
AWK='$(AWK)' scripts/check-local-headers.sh \
"$(includedir)" "$(objpfx)" < /dev/null > $@; \
$(evaluate-test)
ifneq "$(headers)" ""
# Special test of all the installed headers in this directory.
tests-special += $(objpfx)check-installed-headers-c.out
libof-check-installed-headers-c := testsuite
$(objpfx)check-installed-headers-c.out: \
scripts/check-installed-headers.sh $(headers)
$(SHELL) $(..)scripts/check-installed-headers.sh c \
"$(CC) $(filter-out -std=%,$(CFLAGS)) -D_ISOMAC $(+includes)" \
$(headers) > $@; \
$(evaluate-test)
ifneq "$(CXX)" ""
tests-special += $(objpfx)check-installed-headers-cxx.out
libof-check-installed-headers-cxx := testsuite
$(objpfx)check-installed-headers-cxx.out: \
scripts/check-installed-headers.sh $(headers)
$(SHELL) $(..)scripts/check-installed-headers.sh c++ \
"$(CXX) $(filter-out -std=%,$(CXXFLAGS)) -D_ISOMAC $(+includes)" \
$(headers) > $@; \
$(evaluate-test)
endif # $(CXX)
tests-special += $(objpfx)check-wrapper-headers.out
$(objpfx)check-wrapper-headers.out: scripts/check-wrapper-headers.py $(headers)
$(PYTHON) $< --root=. --subdir=. $(headers) \
--generated $(common-generated) > $@; $(evaluate-test)
endif # $(headers)
define summarize-tests
@egrep -v '^(PASS|XFAIL):' $(objpfx)$1 || true
@echo "Summary of test results$2:"
@sed 's/:.*//' < $(objpfx)$1 | sort | uniq -c
@! egrep -q -v '^(X?PASS|XFAIL|UNSUPPORTED):' $(objpfx)$1
endef
# The intention here is to do ONE install of our build into the
# testroot.pristine/ directory, then rsync (internal to
# support/test-container) that to testroot.root/ at the start of each
# test. That way we can promise each test a "clean" install, without
# having to do the install for each test.
#
# In addition, we have to copy some files (which we build) into this
# root in addition to what glibc installs. For example, many tests
# require additional programs including /bin/sh, /bin/true, and
# /bin/echo, all of which we build below to limit library dependencies
# to just those things in glibc and language support libraries which
# we also copy into the into the rootfs. To determine what language
# support libraries we need we build a "test" program in either C or
# (if available) C++ just so we can copy in any shared objects
# (which we do not build) that GCC-compiled programs depend on.
ifeq (,$(CXX))
LINKS_DSO_PROGRAM = links-dso-program-c
else
LINKS_DSO_PROGRAM = links-dso-program
endif
$(tests-container) $(addsuffix /tests,$(subdirs)) : \
$(objpfx)testroot.pristine/install.stamp
$(objpfx)testroot.pristine/install.stamp :
test -d $(objpfx)testroot.pristine || \
mkdir $(objpfx)testroot.pristine
# We need a working /bin/sh for some of the tests.
test -d $(objpfx)testroot.pristine/bin || \
mkdir $(objpfx)testroot.pristine/bin
cp $(objpfx)support/shell-container $(objpfx)testroot.pristine/bin/sh
cp $(objpfx)support/echo-container $(objpfx)testroot.pristine/bin/echo
cp $(objpfx)support/true-container $(objpfx)testroot.pristine/bin/true
ifeq ($(run-built-tests),yes)
# Copy these DSOs first so we can overwrite them with our own.
for dso in `$(test-wrapper-env) LD_TRACE_LOADED_OBJECTS=1 \
$(rtld-prefix) \
$(objpfx)testroot.pristine/bin/sh \
| sed -n '/\//{s@.*=> /@/@;s/^[^/]*//;s/ .*//p;}'` ;\
do \
test -d `dirname $(objpfx)testroot.pristine$$dso` || \
mkdir -p `dirname $(objpfx)testroot.pristine$$dso` ;\
$(test-wrapper) cp $$dso $(objpfx)testroot.pristine$$dso ;\
done
for dso in `$(test-wrapper-env) LD_TRACE_LOADED_OBJECTS=1 \
$(rtld-prefix) \
$(objpfx)support/$(LINKS_DSO_PROGRAM) \
| sed -n '/\//{s@.*=> /@/@;s/^[^/]*//;s/ .*//p;}'` ;\
do \
test -d `dirname $(objpfx)testroot.pristine$$dso` || \
mkdir -p `dirname $(objpfx)testroot.pristine$$dso` ;\
$(test-wrapper) cp $$dso $(objpfx)testroot.pristine$$dso ;\
done
endif
$(MAKE) install DESTDIR=$(objpfx)testroot.pristine \
subdirs='$(sorted-subdirs)'
touch $(objpfx)testroot.pristine/install.stamp
tests-special-notdir = $(patsubst $(objpfx)%, %, $(tests-special))
tests: $(tests-special)
$(..)scripts/merge-test-results.sh -s $(objpfx) "" \
$(sort $(tests-special-notdir:.out=)) \
> $(objpfx)subdir-tests.sum
$(..)scripts/merge-test-results.sh -t $(objpfx) subdir-tests.sum \
$(sort $(subdirs) .) \
> $(objpfx)tests.sum
$(call summarize-tests,tests.sum)
xtests:
$(..)scripts/merge-test-results.sh -t $(objpfx) subdir-xtests.sum \
$(sort $(subdirs)) \
> $(objpfx)xtests.sum
$(call summarize-tests,xtests.sum, for extra tests)
# The realclean target is just like distclean for the parent, but we want
# the subdirs to know the difference in case they care.
realclean distclean: parent-clean
# This is done this way rather than having `subdir_distclean' be a
# dependency of this target so that libc.a will be removed before the
# subdirectories are dealt with and so they won't try to remove object
# files from it when it's going to be removed anyway.
@$(MAKE) distclean-1 no_deps=t distclean-1=$@ avoid-generated=yes \
sysdep-subdirs="$(sysdep-subdirs)"
-rm -f $(postclean)
# Subroutine of distclean and realclean.
distclean-1: subdir_$(distclean-1)
-rm -f $(config-generated)
-rm -f $(addprefix $(objpfx),config.status config.cache config.log)
-rm -f $(addprefix $(objpfx),config.make config-name.h config.h)
ifdef objdir
-rm -f $(objpfx)Makefile
endif
-rm -f $(sysdep-$(distclean-1))
# Make the TAGS file for Emacs users.
.PHONY: TAGS
TAGS:
scripts/list-sources.sh | sed -n -e '/Makefile/p' \
$(foreach S,[chsSyl] cxx sh bash pl,\
$(subst .,\.,-e '/.$S\(.in\)*$$/p')) \
| $(ETAGS) -o $@ -
# Make the distribution tarfile.
.PHONY: dist dist-prepare
generated := $(generated) stubs.h
files-for-dist := README INSTALL configure ChangeLog NEWS
# Regenerate stuff, then error if these things are not committed yet.
dist-prepare: $(files-for-dist)
conf=`find sysdeps -name configure`; \
$(MAKE) $$conf && \
git diff --stat HEAD -- $^ $$conf \
| $(AWK) '{ print; rc=1 } END { exit rc }'
%.tar: FORCE
git archive --prefix=$*/ $* > $@.new
mv -f $@.new $@
# Do `make dist dist-version=X.Y.Z' to make tar files of an older version.
ifneq (,$(strip $(dist-version)))
dist: $(foreach Z,.bz2 .gz .xz,$(dist-version).tar$Z)
md5sum $^
else
dist: dist-prepare
@if v=`git describe`; then \
echo Distribution version $$v; \
$(MAKE) dist dist-version=$$v; \
else \
false; \
fi
endif
INSTALL: manual/install-plain.texi manual/macros.texi \
$(common-objpfx)manual/pkgvers.texi manual/install.texi
makeinfo --no-validate --plaintext --no-number-sections \
-I$(common-objpfx)manual $< -o $@-tmp
$(AWK) 'NF == 0 { ++n; next } \
NF != 0 { while (n-- > 0) print ""; n = 0; print }' \
< $@-tmp > $@-tmp2
rm -f $@-tmp
-chmod a-w $@-tmp2
mv -f $@-tmp2 $@
$(common-objpfx)manual/%: FORCE
$(MAKE) $(PARALLELMFLAGS) -C manual $@
FORCE:
iconvdata/% localedata/% po/%: FORCE
$(MAKE) $(PARALLELMFLAGS) -C $(@D) $(@F)
# Convenience target to rerun one test, from the top of the build tree
# Example: make test t=wcsmbs/test-wcsnlen
.PHONY: test
test :
@-rm -f $(objpfx)$t.out
$(MAKE) subdir=$(dir $t) -C $(dir $t) ..=../ $(objpfx)$t.out
@cat $(objpfx)$t.test-result
@cat $(objpfx)$t.out