This is a followon simplification to the fix for Bug#13650.
* admin/CPP-DEFINES (DATA_START, ORDINARY_LINK): Remove.
* configure.ac (CRT_DIR, LIB_STANDARD, START_FILES, DATA_START)
(LD_FIRSTFLAG, ORDINARY_LINK, LIB_GCC): Remove.
(AC_CHECK_HEADERS_ONCE): Remove sys/resource.h, as it's
not always needed.
(HAVE_DATA_START): New macro.
* etc/PROBLEMS (LIBS_SYSTEM, LIBS_MACHINE, LIBS_STANDARD): Remove.
Remove legacy-systems section, as this stuff is no longer
applicable with current linking strategies.
* src/Makefile.in (LD_FIRSTFLAG, LIB_GCC, CRT_DIR, LIB_STANDARD)
(START_FILES): Remove. All uses removed.
(otherobj): Remove $(VMLIMIT_OBJ), as it's now first.
(ALLOBJS): Move here from autodeps.mk, and with VMLIMITS_OBJ first.
(buildobj.h): Use it.
($(ALLOBJS)): Depend on globals.h.
(temacs$(EXEEXT)): Use $(ALLOBJS).
* src/autodeps.mk (ALLOBJS): Move to Makefile.in.
* src/deps.mk (vm-limit.o):
* src/makefile.w32-in ($(BLD)/vm-limit.$(O)):
Do not depend on mem-limits.h.
* src/emacs.c (__do_global_ctors, __do_global_ctors_aux)
(__do_global_dtors, __CTOR_LIST__, __DTOR_LIST__)
[__GNUC__ && !ORDINARY_LINK]: Remove.
* src/mem-limits.h, src/pre-crt0.c: Remove.
* src/unexaix.c, src/unexcoff.c: Don't include mem-limits.h.
* src/unexcoff.c (etext): New decl.
(make_hdr): Use it instead of start_of_data.
* src/vm-limit.c: Move most of mem-limits.h's contents here.
(data_start): New decl. It's OK if this is approximate,
so simplify-away some unnecessary exactness.
(POINTER): Remove; all uses removed.
(data_space_start): Now char *, to avoid casts.
(exceeds_lisp_ptr): New function, replacing the old
EXCEEDS_LISP_PTR macro. All uses changed.
(check_memory_limits): Simplify and remove casts.
(start_of_data) [!CANNOT_DUMP || !SYSTEM_MALLOC]: Remove.
(memory_warnings): Use data_start instead of start_of_data.
Fixes: debbugs:13783
+2013-02-25 Paul Eggert <eggert@cs.ucla.edu>
+
+ Simplify data_start configuration (Bug#13783).
+ * configure.ac (CRT_DIR, LIB_STANDARD, START_FILES, DATA_START)
+ (LD_FIRSTFLAG, ORDINARY_LINK, LIB_GCC): Remove.
+ (AC_CHECK_HEADERS_ONCE): Remove sys/resource.h, as it's
+ not always needed.
+ (HAVE_DATA_START): New macro.
+
2013-02-18 Aidan Gauland <aidalgol@no8wireless.co.nz>
* lisp/eshell/em-cmpl.el: Corrected "context-related help"
BROKEN_PTY_READ_AFTER_EAGAIN
CLASH_DETECTION
DATA_SEG_BITS
-DATA_START
DEFAULT_SOUND_DEVICE
DEVICE_SEP
DIRECTORY_SEP
NSIG
NSIG_MINIMUM
NULL_DEVICE
-ORDINARY_LINK
PAGESIZE
PREFER_VSUSP
PTY_ITERATION
+2013-02-25 Paul Eggert <eggert@cs.ucla.edu>
+
+ Simplify data_start configuration (Bug#13783).
+ * CPP-DEFINES (DATA_START, ORDINARY_LINK): Remove.
+
2013-02-11 Paul Eggert <eggert@cs.ucla.edu>
Tune by using memchr and memrchr.
fi
fi
-CRT_DIR=
-AC_ARG_WITH([crt-dir],dnl
-[AS_HELP_STRING([--with-crt-dir=DIR],[directory containing crtn.o etc.
-The default is /usr/lib, or /usr/lib64 on some platforms.])])
-CRT_DIR="${with_crt_dir}"
-
AC_ARG_WITH(gameuser,dnl
[AS_HELP_STRING([--with-gameuser=USER],[user for shared game score files])])
test "X${with_gameuser}" != X && test "${with_gameuser}" != yes \
LIB_MATH=-lm
-LIB_STANDARD=
-START_FILES=
dnl Current possibilities handled by sed (aix4-2 -> aix,
dnl gnu-linux -> gnu/linux, etc.):
dnl gnu, gnu/linux, gnu/kfreebsd, aix, cygwin, darwin, hpux, irix.
dnl And special cases: berkeley-unix, usg-unix-v, ms-dos, windows-nt.
SYSTEM_TYPE=`echo $opsys | sed -e 's/[[0-9]].*//' -e 's|-|/|'`
-dnl NB do not use CRT_DIR unquoted here, since it might not be set yet.
case $opsys in
cygwin )
LIB_MATH=
- START_FILES='pre-crt0.o'
;;
darwin )
## Adding -lm confuses the dynamic linker, so omit it.
LIB_MATH=
- START_FILES='pre-crt0.o'
;;
freebsd )
- LIB_STANDARD='-lgcc -lc -lgcc $(CRT_DIR)/crtn.o'
- START_FILES='pre-crt0.o $(CRT_DIR)/crt1.o $(CRT_DIR)/crti.o'
SYSTEM_TYPE=berkeley-unix
;;
gnu-linux | gnu-kfreebsd )
- LIB_STANDARD='-lgcc -lc -lgcc $(CRT_DIR)/crtn.o'
- START_FILES='pre-crt0.o $(CRT_DIR)/crt1.o $(CRT_DIR)/crti.o'
;;
hpux10-20 | hpux11 )
- LIB_STANDARD=-lc
- START_FILES='pre-crt0.o $(CRT_DIR)/crt0.o'
;;
dnl NB this may be adjusted below.
netbsd | openbsd )
- LIB_STANDARD='-lgcc -lc -lgcc $(CRT_DIR)/crtend.o'
- START_FILES='pre-crt0.o $(CRT_DIR)/crt0.o $(CRT_DIR)/crtbegin.o'
SYSTEM_TYPE=berkeley-unix
;;
esac
AC_SUBST(LIB_MATH)
-AC_SUBST(START_FILES)
AC_DEFINE_UNQUOTED(SYSTEM_TYPE, "$SYSTEM_TYPE",
[The type of system you are compiling for; sets `system-type'.])
-dnl Not all platforms use crtn.o files. Check if the current one does.
-crt_files=
-
-for file in x $LIB_STANDARD $START_FILES; do
- case "$file" in
- *CRT_DIR*) crt_files="$crt_files `echo $file | sed -e 's|.*/||'`" ;;
- esac
-done
-
-if test "x$crt_files" != x; then
-
- ## If user specified a crt-dir, use that unconditionally.
- crt_gcc=no
-
- if test "X$CRT_DIR" = "X"; then
-
- CRT_DIR=/usr/lib # default
-
- case "$canonical" in
- x86_64-*-linux-gnu* | s390x-*-linux-gnu*)
- ## On x86-64 and s390x GNU/Linux distributions, the standard library
- ## can be in a variety of places. We only try /usr/lib64 and /usr/lib.
- ## For anything else (eg /usr/lib32), it is up the user to specify
- ## the location (bug#5655).
- ## Test for crtn.o, not just the directory, because sometimes the
- ## directory exists but does not have the relevant files (bug#1287).
- ## FIXME better to test for binary compatibility somehow.
- test -e /usr/lib64/crtn.o && CRT_DIR=/usr/lib64
- ;;
-
- powerpc64-*-linux-gnu* | sparc64-*-linux-gnu*) CRT_DIR=/usr/lib64 ;;
- esac
-
- case "$opsys" in
- hpux10-20) CRT_DIR=/lib ;;
- esac
-
- test "x${GCC}" = xyes && crt_gcc=yes
-
- fi # CRT_DIR = ""
-
- crt_missing=
-
- for file in $crt_files; do
-
- ## If we're using gcc, try to determine it automatically by asking
- ## gcc. [If this doesn't work, CRT_DIR will remain at the
- ## system-dependent default from above.]
- if test $crt_gcc = yes && test ! -e $CRT_DIR/$file; then
-
- crt_file=`$CC --print-file-name=$file 2>/dev/null`
- case "$crt_file" in
- */*)
- CRT_DIR=`AS_DIRNAME(["$crt_file"])`
- ;;
- esac
- fi
-
- dnl We expect all the files to be in a single directory, so after the
- dnl first there is no point asking gcc.
- crt_gcc=no
-
- test -e $CRT_DIR/$file || crt_missing="$crt_missing $file"
- done # $crt_files
-
- test "x$crt_missing" = x || \
- AC_MSG_ERROR([Required file(s) not found:$crt_missing
-Try using the --with-crt-dir option.])
-
-fi # crt_files != ""
-
-AC_SUBST(CRT_DIR)
-
-case $opsys in
- netbsd | openbsd )
- if test -f $CRT_DIR/crti.o; then
-
- test -f $CRT_DIR/crtn.o || \
- AC_MSG_ERROR([Required file not found: crtn.o])
-
- LIB_STANDARD='-lgcc -lc -lgcc $(CRT_DIR)/crtend.o $(CRT_DIR)/crtn.o'
- START_FILES='pre-crt0.o $(CRT_DIR)/crt0.o $(CRT_DIR)/crti.o $(CRT_DIR)/crtbegin.o'
- fi
- ;;
-esac
-
pre_PKG_CONFIG_CFLAGS=$CFLAGS
pre_PKG_CONFIG_LIBS=$LIBS
AC_CHECK_HEADERS_ONCE(
linux/version.h sys/systeminfo.h
coff.h pty.h
- sys/vlimit.h sys/resource.h
+ sys/resource.h
sys/utsname.h pwd.h utmp.h util.h)
AC_MSG_CHECKING(if personality LINUX32 can be set)
CFLAGS="$CFLAGS -I${GNUSTEP_SYSTEM_HEADERS} ${GNUSTEP_LOCAL_HEADERS}"
LDFLAGS="$LDFLAGS -L${GNUSTEP_SYSTEM_LIBRARIES} ${GNUSTEP_LOCAL_LIBRARIES}"
LIBS_GNUSTEP="-lgnustep-gui -lgnustep-base -lobjc -lpthread"
- LIB_STANDARD=
- START_FILES=
dnl GNUstep defines BASE_NATIVE_OBJC_EXCEPTIONS to 0 or 1.
dnl If they had chosen to either define it or not, we could have
dnl just used AC_CHECK_DECL here.
AC_SUBST(ns_self_contained)
AC_SUBST(NS_OBJ)
AC_SUBST(NS_OBJC_OBJ)
-AC_SUBST(LIB_STANDARD)
HAVE_W32=no
W32_OBJ=
else
test "$doug_lea_malloc" != "yes" && GMALLOC_OBJ=gmalloc.o
VMLIMIT_OBJ=vm-limit.o
+
+ AC_CHECK_HEADERS([sys/vlimit.h])
+ AC_CACHE_CHECK([for data_start], [emacs_cv_data_start],
+ [AC_LINK_IFELSE(
+ [AC_LANG_PROGRAM(
+ [[extern char data_start[]; char ch;]],
+ [[return data_start == &ch;]])],
+ [emacs_cv_data_start=yes],
+ [emacs_cv_data_start=no])])
+ if test $emacs_cv_data_start = yes; then
+ AC_DEFINE([HAVE_DATA_START], 1,
+ [Define to 1 if data_start is the address of the start
+ of the main data segment.])
+ fi
fi
AC_SUBST(GMALLOC_OBJ)
AC_SUBST(VMLIMIT_OBJ)
esac
-dnl Used in vm-limit.c
-AH_TEMPLATE(DATA_START, [Address of the start of the data segment.])
-dnl Used in lisp.h, emacs.c, mem-limits.h
+dnl Used in lisp.h, emacs.c, vm-limit.c
dnl NEWS.18 describes this as "a number which contains
dnl the high bits to be inclusive or'ed with pointers that are unpacked."
AH_TEMPLATE(DATA_SEG_BITS, [Extra bits to be or'd in with any pointers
dnl if Emacs uses fewer than 32 bits for the value field of a LISP_OBJECT.
case $opsys in
- gnu)
- dnl libc defines data_start.
- AC_DEFINE(DATA_START, [({ extern int data_start; (char *) &data_start; })])
- ;;
-
aix*)
dnl This works with 32-bit executables; Emacs doesn't support 64-bit.
- AC_DEFINE(DATA_START, [0x20000000])
AC_DEFINE(DATA_SEG_BITS, [0x20000000])
;;
hpux*)
dnl The data segment on this machine always starts at address 0x40000000.
- AC_DEFINE(DATA_START, [0x40000000])
AC_DEFINE(DATA_SEG_BITS, [0x40000000])
;;
irix6-5)
- AC_DEFINE(DATA_START, [0x10000000])
AC_DEFINE(DATA_SEG_BITS, [0x10000000])
;;
esac
AC_SUBST(LD_SWITCH_SYSTEM_TEMACS)
-
-LD_FIRSTFLAG=
-ORDINARY_LINK=
-case "$opsys" in
- ## gnu: GNU needs its own crt0.
- aix4-2|cygwin|darwin|gnu|hpux*|irix6-5|sol2*|unixware) ORDINARY_LINK=yes ;;
-
- ## On post 1.3 releases of NetBSD, gcc -nostdlib also clears the
- ## library search parth, i.e. it won't search /usr/lib for libc and
- ## friends. Using -nostartfiles instead avoids this problem, and
- ## will also work on earlier NetBSD releases.
- netbsd|openbsd) LD_FIRSTFLAG="-nostartfiles" ;;
-
- ## powerpc*: NAKAJI Hiroyuki <nakaji@tutrp.tut.ac.jp> says
- ## MkLinux/LinuxPPC needs this.
- ## s390x-* only supports opsys = gnu-linux so it can be added here.
- gnu-*)
- case "$canonical" in
- powerpc*|s390x-*) LD_FIRSTFLAG="-nostdlib" ;;
- esac
- ;;
-esac
-
-
-if test "x$ORDINARY_LINK" = "xyes"; then
-
- LD_FIRSTFLAG=""
- AC_DEFINE(ORDINARY_LINK, 1, [Define if the C compiler is the linker.])
-
-## The system files defining neither ORDINARY_LINK nor LD_FIRSTFLAG are:
-## freebsd, gnu-* not on powerpc*|s390x*.
-elif test "x$GCC" = "xyes" && test "x$LD_FIRSTFLAG" = "x"; then
-
- ## Versions of GCC >= 2.0 put their library, libgcc.a, in obscure
- ## places that are difficult to figure out at make time. Fortunately,
- ## these same versions allow you to pass arbitrary flags on to the
- ## linker, so there is no reason not to use it as a linker.
- ##
- ## Well, it is not quite perfect. The "-nostdlib" keeps GCC from
- ## searching for libraries in its internal directories, so we have to
- ## ask GCC explicitly where to find libgcc.a (LIB_GCC below).
- LD_FIRSTFLAG="-nostdlib"
-fi
-
-## FIXME? What setting of EDIT_LDFLAGS should this have?
-test "$NS_IMPL_GNUSTEP" = "yes" && LD_FIRSTFLAG="-rdynamic"
-
-AC_SUBST(LD_FIRSTFLAG)
-
-
-## FIXME? The logic here is not precisely the same as that above.
-## There is no check here for a pre-defined LD_FIRSTFLAG.
-## Should we only be setting LIB_GCC if LD ~ -nostdlib?
-LIB_GCC=
-if test "x$GCC" = "xyes" && test "x$ORDINARY_LINK" != "xyes"; then
-
- case "$opsys" in
- freebsd|netbsd|openbsd) LIB_GCC= ;;
-
- gnu-*)
- ## armin76@gentoo.org reported that the lgcc_s flag is necessary to
- ## build on ARM EABI under GNU/Linux. (Bug#5518)
- case $host_cpu in
- arm*)
- LIB_GCC="-lgcc_s"
- ;;
- *)
- ## FIXME? s/gnu-linux.h used to define LIB_GCC as below, then
- ## immediately undefine it again and redefine it to empty.
- ## Was the C_SWITCH_X_SITE part really necessary?
-## LIB_GCC=`$CC $C_SWITCH_X_SITE -print-libgcc-file-name`
- LIB_GCC=
- ;;
- esac
- ;;
-
- ## Ask GCC where to find libgcc.a.
- *) LIB_GCC=`$CC -print-libgcc-file-name 2> /dev/null` ;;
- esac
-fi dnl if $GCC
-AC_SUBST(LIB_GCC)
-
## Common for all window systems
if test "$window_system" != "none"; then
AC_DEFINE(HAVE_WINDOW_SYSTEM, 1, [Define if you have a window system.])
+2013-02-25 Paul Eggert <eggert@cs.ucla.edu>
+
+ Simplify data_start configuration (Bug#13783).
+ * PROBLEMS (LIBS_SYSTEM, LIBS_MACHINE, LIBS_STANDARD): Remove.
+ Remove legacy-systems section, as this stuff is no longer
+ applicable with current linking strategies.
+
2013-02-14 Michael Albinus <michael.albinus@gmx.de>
* NEWS: Tramp methods "scpc" and "rsyncc" are discontinued.
installed in the shared library, and then relink Emacs.
If you have already installed the name resolver in the file libresolv.a,
-then you need to compile Emacs to use that library. The easiest way to
-do this is to add to config.h a definition of LIBS_SYSTEM, LIBS_MACHINE
-or LIB_STANDARD which uses -lresolv. Watch out! If you redefine a macro
-that is already in use in your configuration to supply some other libraries,
-be careful not to lose the others.
-
-Thus, you could start by adding this to config.h:
-
-#define LIBS_SYSTEM -lresolv
-
-Then if this gives you an error for redefining a macro, and you see that
-config.h already defines LIBS_SYSTEM as -lfoo -lbar at some other point
-(possibly in an included file) you could change it to say this:
-
-#define LIBS_SYSTEM -lresolv -lfoo -lbar
+then you need to compile Emacs to use that library.
*** Emacs does not know your host's fully-qualified domain name.
This problem seems to be a matter of configuring the DECserver to use
7 bit characters rather than 8 bit characters.
-
-* Build problems on legacy systems
-
-** SunOS: Emacs gets error message from linker on Sun.
-
-If the error message says that a symbol such as `f68881_used' or
-`ffpa_used' or `start_float' is undefined, this probably indicates
-that you have compiled some libraries, such as the X libraries,
-with a floating point option other than the default.
-
-It's not terribly hard to make this work with small changes in
-crt0.c together with linking with Fcrt1.o, Wcrt1.o or Mcrt1.o.
-However, the easiest approach is to build Xlib with the default
-floating point option: -fsoft.
-
-** HPUX 10.20: Emacs crashes during dumping on the HPPA machine.
-
-This seems to be due to a GCC bug; it is fixed in GCC 2.8.1.
-
\f
This file is part of GNU Emacs.
+2013-02-25 Paul Eggert <eggert@cs.ucla.edu>
+
+ Simplify data_start configuration (Bug#13783).
+ This is a followon simplification to the fix for Bug#13650.
+ * Makefile.in (LD_FIRSTFLAG, LIB_GCC, CRT_DIR, LIB_STANDARD)
+ (START_FILES): Remove. All uses removed.
+ (otherobj): Remove $(VMLIMIT_OBJ), as it's now first.
+ (ALLOBJS): Move here from autodeps.mk, and with VMLIMITS_OBJ first.
+ (buildobj.h): Use it.
+ ($(ALLOBJS)): Depend on globals.h.
+ (temacs$(EXEEXT)): Use $(ALLOBJS).
+ * autodeps.mk (ALLOBJS): Move to Makefile.in.
+ * deps.mk (vm-limit.o):
+ * makefile.w32-in ($(BLD)/vm-limit.$(O)):
+ Do not depend on mem-limits.h.
+ * emacs.c (__do_global_ctors, __do_global_ctors_aux)
+ (__do_global_dtors, __CTOR_LIST__, __DTOR_LIST__)
+ [__GNUC__ && !ORDINARY_LINK]: Remove.
+ * mem-limits.h, pre-crt0.c: Remove.
+ * unexaix.c, unexcoff.c: Don't include mem-limits.h.
+ * unexcoff.c (etext): New decl.
+ (make_hdr): Use DATA_START instead of start_of_data.
+ * vm-limit.c: Move most of mem-limits.h's contents here.
+ (data_start): New decl. It's OK if this is approximate,
+ so simplify-away some unnecessary exactness.
+ (POINTER): Remove; all uses removed.
+ (data_space_start): Now char *, to avoid casts.
+ (exceeds_lisp_ptr): New function, replacing the old
+ EXCEEDS_LISP_PTR macro. All uses changed.
+ (check_memory_limits): Simplify and remove casts.
+ (start_of_data) [!CANNOT_DUMP || !SYSTEM_MALLOC]: Remove.
+ (memory_warnings): Use data_start instead of start_of_data.
+
2013-02-24 Andreas Schwab <schwab@linux-m68k.org>
* xdisp.c (set_message): Only check for debug-on-message if STRING
CFLAGS = @CFLAGS@
CPPFLAGS = @CPPFLAGS@
LDFLAGS = @LDFLAGS@
-LD_FIRSTFLAG=@LD_FIRSTFLAG@
EXEEXT = @EXEEXT@
version = @version@
# Substitute an assignment for the MAKE variable, because
## System-specific LDFLAGS.
LD_SWITCH_SYSTEM=@LD_SWITCH_SYSTEM@
-## This holds any special options for linking temacs only (ie, not
-## used by configure). Not used elsewhere because it sometimes
-## contains options that have to do with using Emacs's crt0,
-## which are only good with temacs.
+## This holds any special options for linking temacs only (i.e., not
+## used by configure).
LD_SWITCH_SYSTEM_TEMACS=@LD_SWITCH_SYSTEM_TEMACS@
## Flags to pass to ld only for temacs.
## Some systems define this to request special libraries.
LIBS_SYSTEM=@LIBS_SYSTEM@
-## Where to find libgcc.a, if using gcc and necessary.
-LIB_GCC=@LIB_GCC@
-
-CRT_DIR=@CRT_DIR@
-## May use $CRT_DIR.
-LIB_STANDARD=@LIB_STANDARD@
-START_FILES = @START_FILES@
-
## -lm, or empty.
LIB_MATH=@LIB_MATH@
## List of object files that make-docfile should not be told about.
otherobj= $(TERMCAP_OBJ) $(PRE_ALLOC_OBJ) $(GMALLOC_OBJ) $(RALLOC_OBJ) \
- $(POST_ALLOC_OBJ) $(VMLIMIT_OBJ) $(WIDGET_OBJ) $(LIBOBJS)
+ $(POST_ALLOC_OBJ) $(WIDGET_OBJ) $(LIBOBJS)
+## All object files linked into temacs. $(VMLIMIT_OBJ) should be first.
+ALLOBJS = $(VMLIMIT_OBJ) $(obj) $(otherobj)
## Configure inserts the file lisp.mk at this point, defining $lisp.
@lisp_frag@
## Construct full set of libraries to be linked.
-## Note that SunOS needs -lm to come before -lc; otherwise, you get
-## duplicated symbols. If the standard libraries were compiled
-## with GCC, we might need LIB_GCC again after them.
LIBES = $(LIBS) $(W32_LIBS) $(LIBS_GNUSTEP) $(LIBX_BASE) $(LIBIMAGE) \
$(LIBX_OTHER) $(LIBSOUND) \
$(RSVG_LIBS) $(IMAGEMAGICK_LIBS) $(LIB_CLOCK_GETTIME) \
$(LIBS_TERMCAP) $(GETLOADAVG_LIBS) $(SETTINGS_LIBS) $(LIBSELINUX_LIBS) \
$(FREETYPE_LIBS) $(FONTCONFIG_LIBS) $(LIBOTF_LIBS) $(M17N_FLT_LIBS) \
$(LIBACL_LIBS) $(LIBGNUTLS_LIBS) $(LIB_PTHREAD) $(LIB_PTHREAD_SIGMASK) \
- $(LIB_GCC) $(LIB_MATH) $(LIB_STANDARD) $(LIB_GCC)
+ $(LIB_MATH)
all: emacs$(EXEEXT) $(OTHER_FILES)
.PHONY: all
cd $(libsrc); $(MAKE) $(MFLAGS) make-docfile$(EXEEXT)
buildobj.h: Makefile
- echo "#define BUILDOBJ \"$(obj) $(otherobj) " "\"" > buildobj.h
+ echo "#define BUILDOBJ \"$(ALLOBJS) " "\"" >$@
globals.h: gl-stamp; @true
$(srcdir)/../build-aux/move-if-change gl-tmp globals.h
echo timestamp > $@
-$(obj) $(otherobj): globals.h
+$(ALLOBJS): globals.h
$(lib)/libgnu.a: $(config_h)
cd $(lib) && $(MAKE) libgnu.a
-temacs$(EXEEXT): $(START_FILES) stamp-oldxmenu $(obj) $(otherobj) \
+temacs$(EXEEXT): stamp-oldxmenu $(ALLOBJS) \
$(lib)/libgnu.a $(W32_RES)
- $(CC) $(LD_FIRSTFLAG) $(ALL_CFLAGS) $(TEMACS_LDFLAGS) $(LDFLAGS) \
- -o temacs $(START_FILES) $(obj) $(otherobj) $(lib)/libgnu.a $(LIBES) \
+ $(CC) $(ALL_CFLAGS) $(TEMACS_LDFLAGS) $(LDFLAGS) \
+ -o temacs $(ALLOBJS) $(lib)/libgnu.a $(LIBES) \
$(W32_RES_LINK)
test "$(CANNOT_DUMP)" = "yes" || \
test "X$(PAXCTL)" = X || $(PAXCTL) -r temacs$(EXEEXT)
## This is inserted in src/Makefile if AUTO_DEPEND=yes.
-ALLOBJS=$(START_FILES) ${obj} ${otherobj}
-include $(ALLOBJS:%.o=${DEPDIR}/%.d)
dispextern.h lisp.h globals.h $(config_h) systime.h coding.h composite.h
gmalloc.o: gmalloc.c $(config_h)
ralloc.o: ralloc.c lisp.h $(config_h)
-vm-limit.o: vm-limit.c mem-limits.h lisp.h globals.h $(config_h)
+vm-limit.o: vm-limit.c lisp.h globals.h $(config_h)
marker.o: marker.c buffer.h character.h lisp.h globals.h $(config_h)
minibuf.o: minibuf.c syntax.h frame.h window.h keyboard.h systime.h \
buffer.h commands.h character.h msdos.h $(INTERVALS_H) keymap.h \
static char const dump_tz[] = "UtC0";
#endif
-#ifndef ORDINARY_LINK
-/* We don't include crtbegin.o and crtend.o in the link,
- so these functions and variables might be missed.
- Provide dummy definitions to avoid error.
- (We don't have any real constructors or destructors.) */
-#ifdef __GNUC__
-
-/* Define a dummy function F. Declare F too, to pacify gcc
- -Wmissing-prototypes. */
-#define DEFINE_DUMMY_FUNCTION(f) \
- void f (void) ATTRIBUTE_CONST EXTERNALLY_VISIBLE; void f (void) {}
-
-#ifndef GCC_CTORS_IN_LIBC
-DEFINE_DUMMY_FUNCTION (__do_global_ctors)
-DEFINE_DUMMY_FUNCTION (__do_global_ctors_aux)
-DEFINE_DUMMY_FUNCTION (__do_global_dtors)
-/* GNU/Linux has a bug in its library; avoid an error. */
-#ifndef GNU_LINUX
-char * __CTOR_LIST__[2] EXTERNALLY_VISIBLE = { (char *) (-1), 0 };
-#endif
-char * __DTOR_LIST__[2] EXTERNALLY_VISIBLE = { (char *) (-1), 0 };
-#endif /* GCC_CTORS_IN_LIBC */
-DEFINE_DUMMY_FUNCTION (__main)
-#endif /* __GNUC__ */
-#endif /* ORDINARY_LINK */
-
/* Test whether the next argument in ARGV matches SSTR or a prefix of
LSTR (at least MINLEN characters). If so, then if VALPTR is non-null
(the argument is supposed to have a value) store in *VALPTR either
$(BLD)/vm-limit.$(O) : \
$(SRC)/vm-limit.c \
- $(SRC)/mem-limits.h \
$(SRC)/w32heap.h \
$(NT_INC)/unistd.h \
$(CONFIG_H) \
+++ /dev/null
-/* Includes for memory limit warnings.
- Copyright (C) 1990, 1993-1996, 2001-2013 Free Software Foundation,
- Inc.
-
-This file is part of GNU Emacs.
-
-GNU Emacs is free software: you can redistribute it and/or modify
-it under the terms of the GNU General Public License as published by
-the Free Software Foundation, either version 3 of the License, or
-(at your option) any later version.
-
-GNU Emacs 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 General Public License for more details.
-
-You should have received a copy of the GNU General Public License
-along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */
-
-#ifdef MSDOS
-#include <dpmi.h>
-extern int etext;
-#endif
-
-/* Some systems need this before <sys/resource.h>. */
-#include <sys/types.h>
-
-#ifdef HAVE_SYS_RESOURCE_H
-# include <sys/time.h>
-# include <sys/resource.h>
-#else
-# if HAVE_SYS_VLIMIT_H
-# include <sys/vlimit.h> /* Obsolete, says glibc */
-# endif
-#endif
-
-extern char *start_of_data (void) ATTRIBUTE_CONST;
-#if USE_LSB_TAG || UINTPTR_MAX <= VAL_MAX
-#define EXCEEDS_LISP_PTR(ptr) 0
-#else
-#define EXCEEDS_LISP_PTR(ptr) \
- (((uintptr_t) (ptr) & ~DATA_SEG_BITS) >> VALBITS)
-#endif
+++ /dev/null
-/* This file is loaded before crt0.o on machines where we do not
- remap part of the data space into text space in unexec.
- On these machines, there is no problem with standard crt0.o's
- that make environ an initialized variable. However, we do
- need to make sure the label data_start exists anyway. */
-
-/* Create a label to appear at the beginning of data space.
- Its value is nonzero so that it cannot be put into bss. */
-
-int data_start = 1;
#include <unistd.h>
#include <fcntl.h>
-#include "mem-limits.h"
-
extern char _data[];
extern char _text[];
#include <sys/file.h>
-#include "mem-limits.h"
+extern int etext;
static long block_copy_start; /* Old executable start point */
static struct filehdr f_hdr; /* File header */
pagemask = getpagesize () - 1;
/* Adjust text/data boundary. */
- data_start = (int) start_of_data ();
+ data_start = (int) DATA_START;
data_start = ADDR_CORRECT (data_start);
data_start = data_start & ~pagemask; /* (Down) to page boundary. */
#include <config.h>
#include <unistd.h> /* for 'environ', on AIX */
#include "lisp.h"
-#include "mem-limits.h"
+
+#ifdef MSDOS
+#include <dpmi.h>
+extern int etext;
+#endif
+
+/* Some systems need this before <sys/resource.h>. */
+#include <sys/types.h>
+
+#ifdef HAVE_SYS_RESOURCE_H
+# include <sys/time.h>
+# include <sys/resource.h>
+#else
+# if HAVE_SYS_VLIMIT_H
+# include <sys/vlimit.h> /* Obsolete, says glibc */
+# endif
+#endif
+
+/* Start of data. It is OK if this is approximate; it's used only as
+ a heuristic. */
+#ifdef DATA_START
+# define data_start ((char *) DATA_START)
+#else
+extern char data_start[];
+# ifndef HAVE_DATA_START
+/* Initialize to nonzero, so that it's put into data and not bss.
+ Link this file's object code first, so that this symbol is near the
+ start of data. */
+char data_start[1] = { 1 };
+# endif
+#endif
/*
Level number of warnings already issued.
0 means don't issue them. */
static void (*warn_function) (const char *);
-/* Start of data space; can be changed by calling malloc_init. */
-static void *data_space_start;
+/* Start of data space; can be changed by calling memory_warnings. */
+static char *data_space_start;
/* Number of bytes of writable memory we can expect to be able to get. */
static size_t lim_data;
\f
+/* Return true if PTR cannot be represented as an Emacs Lisp object. */
+static bool
+exceeds_lisp_ptr (void *ptr)
+{
+ return (! USE_LSB_TAG
+ && VAL_MAX < UINTPTR_MAX
+ && ((uintptr_t) ptr & ~DATA_SEG_BITS) >> VALBITS != 0);
+}
#ifdef HAVE_GETRLIMIT
{
#ifdef REL_ALLOC
extern void *(*real_morecore) (ptrdiff_t);
+#else
+ void *(*real_morecore) (ptrdiff_t) = 0;
#endif
extern void *(*__morecore) (ptrdiff_t);
- void *cp;
+ char *cp;
size_t five_percent;
size_t data_size;
enum warnlevel new_warnlevel;
five_percent = lim_data / 20;
/* Find current end of memory and issue warning if getting near max */
-#ifdef REL_ALLOC
- if (real_morecore)
- cp = (char *) (*real_morecore) (0);
- else
-#endif
- cp = (char *) (*__morecore) (0);
- data_size = (char *) cp - (char *) data_space_start;
+ cp = (real_morecore ? real_morecore : __morecore) (0);
+ data_size = cp - data_space_start;
if (!warn_function)
return;
warnlevel = warned_85;
}
- if (EXCEEDS_LISP_PTR (cp))
+ if (exceeds_lisp_ptr (cp))
(*warn_function) ("Warning: memory in use exceeds lisp pointer size");
}
\f
-#if !defined (CANNOT_DUMP) || !defined (SYSTEM_MALLOC)
-/* Some systems that cannot dump also cannot implement these. */
-
-/*
- * Return the address of the start of the data segment prior to
- * doing an unexec. After unexec the return value is undefined.
- * See crt0.c for further information and definition of data_start.
- *
- * Apparently, on BSD systems this is etext at startup. On
- * USG systems (swapping) this is highly mmu dependent and
- * is also dependent on whether or not the program is running
- * with shared text. Generally there is a (possibly large)
- * gap between end of text and start of data with shared text.
- *
- */
-
-char *
-start_of_data (void)
-{
-#ifdef BSD_SYSTEM
- extern char etext;
- return (void *) &etext;
-#elif defined DATA_START
- return (void *) DATA_START;
-#elif defined ORDINARY_LINK
- /*
- * This is a hack. Since we're not linking crt0.c or pre_crt0.c,
- * data_start isn't defined. We take the address of environ, which
- * is known to live at or near the start of the system crt0.c, and
- * we don't sweat the handful of bytes that might lose.
- */
- return (void *) &environ;
-#else
- extern int data_start;
- return (void *) &data_start;
-#endif
-}
-#endif /* (not CANNOT_DUMP or not SYSTEM_MALLOC) */
-\f
/* Enable memory usage warnings.
START says where the end of pure storage is.
WARNFUN specifies the function to call to issue a warning. */
{
extern void (* __after_morecore_hook) (void); /* From gmalloc.c */
- if (start)
- data_space_start = start;
- else
- data_space_start = start_of_data ();
+ data_space_start = start ? start : data_start;
warn_function = warnfun;
__after_morecore_hook = check_memory_limits;
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