+2013-05-16 Jason Merrill <jason@redhat.com>
+
+ * Makefile.in (LLINKER): New variable.
+ (mostlyclean): Remove link mutex.
+ * configure.ac: Handle --enable-link-mutex.
+ * lock-and-run.sh: New script.
+
2013-05-16 Ramana Radhakrishnan <ramana.radhakrishnan@arm.com>
PR target/19599
LINKER_FLAGS = $(CFLAGS)
endif
+# Like LINKER, but use a mutex for serializing front end links.
+ifeq (@DO_LINK_MUTEX@,true)
+LLINKER = $(SHELL) $(srcdir)/lock-and-run.sh linkfe.lck $(LINKER)
+else
+LLINKER = $(LINKER)
+endif
+
# -------------------------------------------
# Programs which operate on the build machine
# -------------------------------------------
-rm -f gtype.state
# Delete genchecksum outputs
-rm -f *-checksum.c
+# Delete lock-and-run bits
+ -rm -rf linkfe.lck lock-stamp.*
# Delete all files made by compilation
# that don't exist in the distribution.
+2013-05-16 Jason Merrill <jason@redhat.com>
+
+ * gcc-interface/Make-lang.in (gnat1$(exeext)): Use link mutex.
+
2013-05-13 Rainer Orth <ro@CeBiTec.Uni-Bielefeld.DE>
PR ada/57188
GCC_LINKERFLAGS = $(filter-out -Werror, $(ALL_LINKERFLAGS))
GCC_LINK=$(LINKER) $(GCC_LINKERFLAGS) $(LDFLAGS)
+GCC_LLINK=$(LLINKER) $(GCC_LINKERFLAGS) $(LDFLAGS)
# Lists of files for various purposes.
# Since the RTL should be built with the latest compiler, remove the
# stamp target in the parent directory whenever gnat1 is rebuilt
gnat1$(exeext): $(TARGET_ADA_SRCS) $(GNAT1_OBJS) $(ADA_BACKEND) libcommon-target.a $(LIBDEPS)
- +$(GCC_LINK) -o $@ $(GNAT1_OBJS) $(ADA_BACKEND) libcommon-target.a $(LIBS) $(SYSLIBS) $(BACKENDLIBS) $(CFLAGS)
+ +$(GCC_LLINK) -o $@ $(GNAT1_OBJS) $(ADA_BACKEND) \
+ libcommon-target.a $(LIBS) $(SYSLIBS) $(BACKENDLIBS) $(CFLAGS)
$(RM) stamp-gnatlib2-rts stamp-tools
gnatbind$(exeext): ada/b_gnatb.o $(CONFIG_H) $(GNATBIND_OBJS) ggc-none.o libcommon-target.a $(LIBDEPS)
+2013-05-16 Jason Merrill <jason@redhat.com>
+
+ * Make-lang.in (cc1$(exeext)): Use link mutex.
+
2013-04-24 Paolo Carlini <paolo.carlini@oracle.com>
* c-typeck.c (pointer_diff): Change -Wpointer-arith pedwarns
cc1-checksum.o : cc1-checksum.c $(CONFIG_H) $(SYSTEM_H)
cc1$(exeext): $(C_OBJS) cc1-checksum.o $(BACKEND) $(LIBDEPS)
- +$(LINKER) $(ALL_LINKERFLAGS) $(LDFLAGS) -o $@ $(C_OBJS) \
+ +$(LLINKER) $(ALL_LINKERFLAGS) $(LDFLAGS) -o $@ $(C_OBJS) \
cc1-checksum.o $(BACKEND) $(LIBS) $(BACKENDLIBS)
#\f
# Build hooks:
dollar
gcc_tooldir
enable_lto
+DO_LINK_MUTEX
MAINT
zlibinc
zlibdir
with_gc
with_system_zlib
enable_maintainer_mode
+enable_link_mutex
enable_version_specific_runtime_libs
enable_plugin
enable_libquadmath_support
--enable-maintainer-mode
enable make rules and dependencies not useful (and
sometimes confusing) to the casual installer
+ --enable-link-mutex avoid linking multiple front-ends at once to avoid
+ thrashing on the build machine
--enable-version-specific-runtime-libs
specify that runtime libraries should be installed
in a compiler-specific directory
lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
lt_status=$lt_dlunknown
cat > conftest.$ac_ext <<_LT_EOF
-#line 17833 "configure"
+#line 17837 "configure"
#include "confdefs.h"
#if HAVE_DLFCN_H
lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
lt_status=$lt_dlunknown
cat > conftest.$ac_ext <<_LT_EOF
-#line 17939 "configure"
+#line 17943 "configure"
#include "confdefs.h"
#if HAVE_DLFCN_H
MAINT='#'
fi
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether to avoid linking multiple front-ends at once" >&5
+$as_echo_n "checking whether to avoid linking multiple front-ends at once... " >&6; }
+ # Check whether --enable-link-mutex was given.
+if test "${enable_link_mutex+set}" = set; then :
+ enableval=$enable_link_mutex; do_link_mutex=$enableval
+else
+ do_link_mutex=no
+fi
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $do_link_mutex" >&5
+$as_echo "$do_link_mutex" >&6; }
+
+if test "$do_link_mutex" = "yes"; then
+ DO_LINK_MUTEX=true
+else
+ DO_LINK_MUTEX=false
+fi
+
+
# --------------
# Language hooks
# --------------
fi
AC_SUBST(MAINT)dnl
+dnl Whether to prevent multiple front-ends from linking at the same time
+
+AC_MSG_CHECKING([whether to avoid linking multiple front-ends at once])
+ AC_ARG_ENABLE(link-mutex,
+[AS_HELP_STRING([--enable-link-mutex],
+ [avoid linking multiple front-ends at once to avoid thrashing
+ on the build machine])],
+ do_link_mutex=$enableval,
+ do_link_mutex=no)
+AC_MSG_RESULT($do_link_mutex)
+
+if test "$do_link_mutex" = "yes"; then
+ DO_LINK_MUTEX=true
+else
+ DO_LINK_MUTEX=false
+fi
+AC_SUBST(DO_LINK_MUTEX)
+
# --------------
# Language hooks
# --------------
2013-05-16 Jason Merrill <jason@redhat.com>
+ * Make-lang.in (cc1plus$(exeext)): Use link mutex.
+
PR c++/57279
* decl.c (grokdeclarator): Allow member function qualifiers in
TYPENAME context in C++11 mode.
cc1plus-checksum.o : cc1plus-checksum.c $(CONFIG_H) $(SYSTEM_H)
cc1plus$(exeext): $(CXX_OBJS) cc1plus-checksum.o $(BACKEND) $(LIBDEPS)
- +$(LINKER) $(ALL_LINKERFLAGS) $(LDFLAGS) -o $@ \
+ +$(LLINKER) $(ALL_LINKERFLAGS) $(LDFLAGS) -o $@ \
$(CXX_OBJS) cc1plus-checksum.o $(BACKEND) $(LIBS) $(BACKENDLIBS)
ifeq ($(ENABLE_MAINTAINER_RULES), true)
will try to guess whether the @code{.init_array} and
@code{.fini_array} sections are supported and, if they are, use them.
+@item --enable-link-mutex
+When building GCC, use a mutex to avoid linking the compilers for
+multiple languages at the same time, to avoid thrashing on build
+systems with limited free memory. The default is not to use such a mutex.
+
@item --enable-maintainer-mode
The build rules that regenerate the Autoconf and Automake output files as
well as the GCC master message catalog @file{gcc.pot} are normally
+2013-05-16 Jason Merrill <jason@redhat.com>
+
+ * Make-lang.in (f951$(exeext)): Use link mutex.
+
2013-05-05 Tobias Burnus <burnus@net-b.de>
* resolve.c (conformable_arrays): Avoid segfault
# The compiler itself is called f951.
f951$(exeext): $(F95_OBJS) \
$(BACKEND) $(LIBDEPS) attribs.o
- +$(LINKER) $(ALL_LINKERFLAGS) $(LDFLAGS) -o $@ \
+ +$(LLINKER) $(ALL_LINKERFLAGS) $(LDFLAGS) -o $@ \
$(F95_OBJS) $(BACKEND) $(ZLIB) $(LIBS) attribs.o \
$(BACKENDLIBS)
+2013-05-16 Jason Merrill <jason@redhat.com>
+
+ * Make-lang.in (go1$(exeext)): Use link mutex.
+
2013-01-16 Shenghou Ma <minux.ma@gmail.com>
* gospec.c: pass -u pthread_create to linker when static linking.
go/unsafe.o
go1$(exeext): $(GO_OBJS) attribs.o $(BACKEND) $(LIBDEPS)
- +$(CXX) $(ALL_CXXFLAGS) $(LDFLAGS) -o $@ \
+ +$(LLINKER) $(ALL_LINKERFLAGS) $(LDFLAGS) -o $@ \
$(GO_OBJS) attribs.o $(BACKEND) $(LIBS) $(BACKENDLIBS)
# Documentation.
+2013-05-16 Jason Merrill <jason@redhat.com>
+
+ * Make-lang.in (jc1$(exeext)): Use link mutex.
+
2013-05-06 Jakub Jelinek <jakub@redhat.com>
PR libgcj/57074
jc1$(exeext): $(JAVA_OBJS) $(BACKEND) $(LIBDEPS) attribs.o
rm -f $@
- +$(LINKER) $(ALL_LINKERFLAGS) $(LDFLAGS) -o $@ \
+ +$(LLINKER) $(ALL_LINKERFLAGS) $(LDFLAGS) -o $@ \
$(JAVA_OBJS) $(BACKEND) $(ZLIB) $(LIBICONV) $(LIBS) attribs.o $(BACKENDLIBS)
jcf-dump$(exeext): $(JCFDUMP_OBJS) $(LIBDEPS)
--- /dev/null
+#! /bin/sh
+# Shell-based mutex using mkdir.
+
+lockdir=$1 prog=$2; shift 2 || exit 1
+count=0
+# Remember when we started trying to acquire the lock.
+touch lock-stamp.$$
+trap 'rm -r "$lockdir" lock-stamp.$$' 0
+until mkdir "$lockdir" 2>/dev/null; do
+ # Say something periodically so the user knows what's up.
+ if [ `expr $count % 30` = 0 ]; then
+ # Reset if the lock has been renewed.
+ if [ -n "`find \"$lockdir\" -newer lock-stamp.$$`" ]; then
+ touch lock-stamp.$$
+ count=1
+ # Steal the lock after 5 minutes.
+ elif [ $count = 300 ]; then
+ echo removing stale $lockdir >&2
+ rm -r "$lockdir"
+ else
+ echo waiting to acquire $lockdir >&2
+ fi
+ fi
+ sleep 1
+ count=`expr $count + 1`
+done
+echo $prog "$@"
+$prog "$@"
+# The trap runs on exit.
+2013-05-16 Jason Merrill <jason@redhat.com>
+
+ * Make-lang.in ($(LTO_EXE)): Use link mutex.
+
2013-05-15 Martin Jambor <mjambor@suse.cz>
* lto-partition.c (lto_balanced_map): Print symbol order instead
lto-warn = $(STRICT_WARN)
$(LTO_EXE): $(LTO_OBJS) $(BACKEND) $(LIBDEPS)
- +$(LINKER) $(ALL_LINKERFLAGS) $(LDFLAGS) -o $@ \
+ +$(LLINKER) $(ALL_LINKERFLAGS) $(LDFLAGS) -o $@ \
$(LTO_OBJS) $(BACKEND) $(BACKENDLIBS) $(LIBS)
# Dependencies
+2013-05-16 Jason Merrill <jason@redhat.com>
+
+ * Make-lang.in (cc1obj$(exeext)): Use link mutex.
+
2012-11-20 Diego Novillo <dnovillo@google.com>
* objc-act.c: Replace all vec<T, A>() initializers with vNULL.
cc1obj-checksum.o : cc1obj-checksum.c $(CONFIG_H) $(SYSTEM_H)
cc1obj$(exeext): $(OBJC_OBJS) $(C_AND_OBJC_OBJS) cc1obj-checksum.o $(BACKEND) $(LIBDEPS)
- +$(LINKER) $(ALL_LINKERFLAGS) $(LDFLAGS) -o $@ \
+ +$(LLINKER) $(ALL_LINKERFLAGS) $(LDFLAGS) -o $@ \
$(OBJC_OBJS) $(C_AND_OBJC_OBJS) cc1obj-checksum.o \
$(BACKEND) $(LIBS) $(BACKENDLIBS)
+2013-05-16 Jason Merrill <jason@redhat.com>
+
+ * Make-lang.in (cc1objplus$(exeext)): Use link mutex.
+
2012-06-02 Jason Merrill <jason@redhat.com>
* objcp-decl.c (objcp_start_struct): Adjust for change in
cc1objplus-checksum.o : cc1objplus-checksum.c $(CONFIG_H) $(SYSTEM_H)
cc1objplus$(exeext): $(OBJCXX_OBJS) cc1objplus-checksum.o $(BACKEND) $(LIBDEPS)
- +$(LINKER) $(ALL_LINKERFLAGS) $(LDFLAGS) -o $@ \
+ +$(LLINKER) $(ALL_LINKERFLAGS) $(LDFLAGS) -o $@ \
$(OBJCXX_OBJS) cc1objplus-checksum.o $(BACKEND) $(LIBS) $(BACKENDLIBS)
# Objective C++ language specific files.