From 585f9b9f3ad31c32c0e44ad68bac2aea53d89ec9 Mon Sep 17 00:00:00 2001
From: Ivan Maidanski <ivmai@mail.ru>
Date: Thu, 15 Dec 2011 16:02:38 +0400
Subject: [PATCH] Add configure option to compile all library .c files into
 single gc.o

* Makefile.am (SINGLE_GC_OBJ): Test new AM conditional.
* Makefile.am (libgc_la_SOURCES): Put only extra/gc.c entry here if
SINGLE_GC_OBJ.
* Makefile.am (EXTRA_DIST): Add extra/gc.c only if not SINGLE_GC_OBJ.
* configure.ac (single-obj-compilation): New AC "enable" argument
(turning on compilation of single extra/gc.c file instead of all .c
files from GC base folder).
* configure.ac (SINGLE_GC_OBJ): New AM conditional.
---
 Makefile.am  | 8 +++++++-
 configure.ac | 5 +++++
 2 files changed, 12 insertions(+), 1 deletion(-)

diff --git a/Makefile.am b/Makefile.am
index 15fcee31..0d1fa831 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -49,6 +49,10 @@ pkgconfig_DATA = bdw-gc.pc
 # ---------
 
 lib_LTLIBRARIES += libgc.la
+if SINGLE_GC_OBJ
+libgc_la_SOURCES = extra/gc.c
+else
+EXTRA_DIST += extra/gc.c
 libgc_la_SOURCES = \
     allchblk.c alloc.c backgraph.c blacklst.c checksums.c dbg_mlc.c \
     dyn_load.c finalize.c gc_dlopen.c gcj_mlc.c headers.c \
@@ -75,6 +79,8 @@ if ENABLE_DISCLAIM
 libgc_la_SOURCES += fnlz_mlc.c
 endif
 
+endif
+
 if USE_INTERNAL_LIBATOMIC_OPS
 nodist_libgc_la_SOURCES = libatomic_ops/src/atomic_ops.c
 endif
@@ -170,7 +176,7 @@ EXTRA_DIST += BCC_MAKEFILE NT_MAKEFILE \
 #
 EXTRA_DIST += tools/add_gc_prefix.c tools/gcname.c tools/if_mach.c \
     tools/if_not_there.c tools/setjmp_t.c tools/threadlibs.c \
-    gc.mak extra/gc.c extra/MacOS.c extra/AmigaOS.c \
+    gc.mak extra/MacOS.c extra/AmigaOS.c \
     Mac_files/datastart.c Mac_files/dataend.c \
     Mac_files/MacOS_config.h Mac_files/MacOS_Test_config.h \
     include/private/msvc_dbg.h extra/msvc_dbg.c tools/callprocs.sh
diff --git a/configure.ac b/configure.ac
index c18ac1a0..e1c6e2c2 100644
--- a/configure.ac
+++ b/configure.ac
@@ -755,6 +755,11 @@ fi
 
 AM_CONDITIONAL(USE_LIBDIR, test -z "$with_cross_host")
 
+AC_ARG_ENABLE(single-obj-compilation,
+   [AC_HELP_STRING([--enable-single-obj-compilation],
+                   [Compile all library .c files into single .o])],
+   [single_obj_compilation=yes])
+AM_CONDITIONAL([SINGLE_GC_OBJ], [test "$single_obj_compilation" = "yes"])
 
 # Atomic Ops
 # ----------
-- 
2.50.1