Build lib/e-*.o only on platforms that need it

* configure.ac (hybrid malloc): Simplify configuration.
(SHEAP_OBJ): Remove; no longer needed.
(HYBRID_MALLOC): New var. Subst it.
(HYBRID_MALLOC_LIB): New Automake conditional.
* lib/Makefile.am (noinst_LIBRARIES): Add libegnu.a only if
HYBRID_MALLOC_LIB.
(libegnu_a_CPPFLAGS): Omit AM_CPPFLAGS; not needed.
(MOSTLYCLEANFILES): Add libegnu.a.
* src/Makefile.in (SHEAP_OBJ): Remove.
(HYBRID_MALLOC): New macro.
(base_obj): Use it to conditionally add sheap.o.
(LIBEGNU_ARCHIVE): New macro.
($(LIBEGNU_ARCHIVE)): New rule, replacing $(lib)/libegnu.a.
All uses of the latter replaced by the former.
* src/alloc.c (USE_ALIGNED_ALLOC): Simplify configuration.
Correct misspelling ALIGNED_ALLOC to HAVE_ALIGNED_ALLOC.
* src/gmalloc.c: Update comment.
* src/lisp.h (aligned_alloc)
[!DOUG_LEA_MALLOC && !HYBRID_MALLOC && !SYSTEM_MALLOC]:
New decl.
(Bug#22086)

6 files changed, 39 insertions, 27 deletions

diff --git a/configure.ac b/configure.ac
index ef6ddc66d4..856c36c706 100644
--- a/configure.ac
+++ b/configure.ac
@@ -2123,12 +2123,12 @@ case "$opsys" in
 esac
 
 if test "${system_malloc}" != yes && test "${doug_lea_malloc}" != yes \
-   && test "${UNEXEC_OBJ}" = unexelf.o && test "${hybrid_malloc}" != no; then
+   && test "${UNEXEC_OBJ}" = unexelf.o; then
   hybrid_malloc=yes
 fi
 
 GMALLOC_OBJ=
-SHEAP_OBJ=
+HYBRID_MALLOC=
 if test "${system_malloc}" = "yes"; then
   AC_DEFINE([SYSTEM_MALLOC], 1,
     [Define to 1 to use the system memory allocator, even if it is not
@@ -2140,10 +2140,10 @@ if test "${system_malloc}" = "yes"; then
 elif test "$hybrid_malloc" = yes; then
   AC_DEFINE(HYBRID_MALLOC, 1,
     [Define to use gmalloc before dumping and the system malloc after.])
+  HYBRID_MALLOC=1
   GNU_MALLOC=
   GNU_MALLOC_reason="only before dumping"
   GMALLOC_OBJ=gmalloc.o
-  SHEAP_OBJ=sheap.o
   VMLIMIT_OBJ=
 else
   test "$doug_lea_malloc" != "yes" && GMALLOC_OBJ=gmalloc.o
@@ -2163,8 +2163,9 @@ else
        of the main data segment.])
   fi
 fi
+AC_SUBST([HYBRID_MALLOC])
+AM_CONDITIONAL([HYBRID_MALLOC_LIB], [test -n "$HYBRID_MALLOC"])
 AC_SUBST(GMALLOC_OBJ)
-AC_SUBST(SHEAP_OBJ)
 AC_SUBST(VMLIMIT_OBJ)
 
 if test "$doug_lea_malloc" = "yes" && test "$hybrid_malloc" != yes; then
diff --git a/lib/Makefile.am b/lib/Makefile.am
index a1dd6a4ca9..74bab4eee0 100644
--- a/lib/Makefile.am
+++ b/lib/Makefile.am
@@ -1,3 +1,20 @@
+# Copyright 2016 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/>.
+
 BUILT_SOURCES =
 CLEANFILES =
 EXTRA_DIST =
@@ -17,14 +34,16 @@ include gnulib.mk
 libgnu_a_SOURCES += openat-die.c save-cwd.c
 endif
 
+if HYBRID_MALLOC_LIB
 noinst_LIBRARIES += libegnu.a
+endif
 
 libegnu_a_SOURCES = $(libgnu_a_SOURCES)
 libegnu_a_LIBADD = $(patsubst %.o,e-%.o,$(libgnu_a_LIBADD))
 EXTRA_libegnu_a_SOURCES = $(EXTRA_libgnu_a_SOURCES)
 libegnu_a_SHORTNAME = e
-
-libegnu_a_CPPFLAGS = $(AM_CPPFLAGS) -Demacs
+libegnu_a_CPPFLAGS = -Demacs
+MOSTLYCLEANFILES += libegnu.a
 
 .PHONY: bootstrap-clean
 
diff --git a/src/Makefile.in b/src/Makefile.in
index e59d3b1568..150575864d 100644
--- a/src/Makefile.in
+++ b/src/Makefile.in
@@ -254,8 +254,7 @@ XFIXES_CFLAGS = @XFIXES_CFLAGS@
 ## widget.o if USE_X_TOOLKIT, otherwise empty.
 WIDGET_OBJ=@WIDGET_OBJ@
 
-## sheap.o if HYBRID_MALLOC, otherwise empty.
-SHEAP_OBJ=@SHEAP_OBJ@
+HYBRID_MALLOC = @HYBRID_MALLOC@
 
 ## cygw32.o if CYGWIN, otherwise empty.
 CYGWIN_OBJ=@CYGWIN_OBJ@
@@ -400,6 +399,7 @@ base_obj = dispnew.o frame.o scroll.o xdisp.o menu.o $(XMENU_OBJ) window.o \
 	doprnt.o intervals.o textprop.o composite.o xml.o $(NOTIFY_OBJ) \
 	$(XWIDGETS_OBJ) \
 	profiler.o decompress.o \
+	$(if $(HYBRID_MALLOC),sheap.o) \
 	$(SHEAP_OBJ) \
 	$(MSDOS_OBJ) $(MSDOS_X_OBJ) $(NS_OBJ) $(CYGWIN_OBJ) $(FONT_OBJ) \
 	$(W32_OBJ) $(WINDOW_SYSTEM_OBJ) $(XGSELOBJ)
@@ -580,7 +580,9 @@ globals.h: gl-stamp; @true
 
 $(ALLOBJS): globals.h
 
-$(lib)/libegnu.a: $(config_h)
+LIBEGNU_ARCHIVE = $(lib)/lib$(if $(HYBRID_MALLOC),e)gnu.a
+
+$(LIBEGNU_ARCHIVE): $(config_h)
 	$(MAKE) -C $(lib) all
 
 ## We have to create $(etc) here because init_cmdargs tests its
@@ -588,9 +590,9 @@ $(lib)/libegnu.a: $(config_h)
 ## This goes on to affect various things, and the emacs binary fails
 ## to start if Vinstallation_directory has the wrong value.
 temacs$(EXEEXT): $(LIBXMENU) $(ALLOBJS) \
-	         $(lib)/libegnu.a $(EMACSRES) ${charsets} ${charscript}
+	         $(LIBEGNU_ARCHIVE) $(EMACSRES) ${charsets} ${charscript}
 	$(AM_V_CCLD)$(CC) $(ALL_CFLAGS) $(TEMACS_LDFLAGS) $(LDFLAGS) \
-	  -o temacs $(ALLOBJS) $(lib)/libegnu.a $(W32_RES_LINK) $(LIBES)
+	  -o temacs $(ALLOBJS) $(LIBEGNU_ARCHIVE) $(W32_RES_LINK) $(LIBES)
 	$(MKDIR_P) $(etc)
 ifneq ($(CANNOT_DUMP),yes)
 	$(PAXCTL_if_present) -r $@
diff --git a/src/alloc.c b/src/alloc.c
index 039b7285e3..b1d3f2e651 100644
--- a/src/alloc.c
+++ b/src/alloc.c
@@ -1123,17 +1123,12 @@ lisp_free (void *block)
    clang 3.3 anyway.  */
 
 #if ! ADDRESS_SANITIZER
-# if !defined SYSTEM_MALLOC && !defined DOUG_LEA_MALLOC && !defined HYBRID_MALLOC
-#  define USE_ALIGNED_ALLOC 1
-/* Defined in gmalloc.c.  */
-void *aligned_alloc (size_t, size_t);
-# elif defined HYBRID_MALLOC
-#  if defined ALIGNED_ALLOC || defined HAVE_POSIX_MEMALIGN
+# if defined HYBRID_MALLOC
+#  if defined HAVE_ALIGNED_ALLOC || defined HAVE_POSIX_MEMALIGN
 #   define USE_ALIGNED_ALLOC 1
-#   define aligned_alloc hybrid_aligned_alloc
-/* Defined in gmalloc.c.  */
-void *aligned_alloc (size_t, size_t);
 #  endif
+# elif !defined SYSTEM_MALLOC && !defined DOUG_LEA_MALLOC
+#  define USE_ALIGNED_ALLOC 1
 # elif defined HAVE_ALIGNED_ALLOC
 #  define USE_ALIGNED_ALLOC 1
 # elif defined HAVE_POSIX_MEMALIGN
diff --git a/src/gmalloc.c b/src/gmalloc.c
index 4feff83a2d..ca862767bb 100644
--- a/src/gmalloc.c
+++ b/src/gmalloc.c
@@ -65,13 +65,7 @@ extern void *__default_morecore (ptrdiff_t);
    however, will use the system malloc, realloc....  In other source
    files, malloc, realloc... are renamed hybrid_malloc,
    hybrid_realloc... via macros in conf_post.h.  hybrid_malloc and
-   friends are wrapper functions defined later in this file.
-   aligned_alloc is defined as a macro only in alloc.c.
-
-   As of this writing (August 2014), Cygwin is the only platform on
-   which HYBRID_MACRO is defined.  Any other platform that wants to
-   define it will have to define the macros DUMPED and
-   ALLOCATED_BEFORE_DUMPING, defined below for Cygwin.  */
+   friends are wrapper functions defined later in this file.  */
 #undef malloc
 #undef realloc
 #undef calloc
diff --git a/src/lisp.h b/src/lisp.h
index 4f4ec2c5fc..cafcfdef43 100644
--- a/src/lisp.h
+++ b/src/lisp.h
@@ -3772,6 +3772,7 @@ INLINE void (check_cons_list) (void) { lisp_h_check_cons_list (); }
 #if !defined DOUG_LEA_MALLOC && !defined HYBRID_MALLOC && !defined SYSTEM_MALLOC
 /* Defined in gmalloc.c.  */
 extern size_t __malloc_extra_blocks;
+extern void *aligned_alloc (size_t, size_t);
 #endif
 extern void malloc_enable_thread (void);