commit be645d7a9848847388a662f6c0f7571d52ed7a05
Author: Philippe Coval <philippe.coval@open.eurogiciel.org>
Date:   Wed Dec 17 16:46:29 2014 -0500

    build: sort sources to build in a more deterministic way
    
    It has been observed that binaries contents
    are depending on the order of linked objects.
    
    This order is caused by GNU make's wildcard function
    and the position of sources on filesystem.
    
    This change tries to prevent this kind of randomness.
    
    Also consider building using -j1 flag
    to make it even more reproductible.
    
    Change-Id: Ie8eee7f336e6f1fa2863c4150d967afd15519f1d
    Bug: http://bugzilla.syslinux.org/show_bug.cgi?id=57#related
    Signed-off-by: Philippe Coval <philippe.coval at open.eurogiciel.org>

Index: syslinux-4.04/com32/cmenu/Makefile
===================================================================
--- syslinux-4.04.orig/com32/cmenu/Makefile
+++ syslinux-4.04/com32/cmenu/Makefile
@@ -28,7 +28,7 @@ CFLAGS	  += -I./libmenu
 LIBMENU = libmenu/syslnx.o libmenu/com32io.o libmenu/tui.o \
 	libmenu/menu.o libmenu/passwords.o libmenu/des.o libmenu/help.o
 
-CMENUS = $(patsubst %.c,%.c32,$(wildcard *.c))
+CMENUS = $(sort $(patsubst %.c,%.c32,$(wildcard *.c)))
 IMENUS = $(patsubst %.menu,%.c32,$(wildcard *.menu))
 
 MENUS = $(CMENUS) $(IMENUS)
@@ -56,7 +56,7 @@ clean: tidy menuclean libclean
 	rm -f *.lss *.c32 *.com
 
 menuclean:
-	rm -f $(patsubst %.menu,%.c,$(wildcard *.menu))
+	rm -f $(patsubst %.menu,%.c,$(sort $(wildcard *.menu)))
 
 spotless: clean libclean menuclean
 	rm -f *~ \#*
Index: syslinux-4.04/com32/rosh/Makefile
===================================================================
--- syslinux-4.04.orig/com32/rosh/Makefile
+++ syslinux-4.04/com32/rosh/Makefile
@@ -24,7 +24,7 @@ include MCONFIG
 # official release.  Otherwise, substitute a hex string that is pretty much
 # guaranteed to be unique to be unique from build to build.
 ifndef HEXDATE
-HEXDATE := $(shell $(PERL) $(topdir)/now.pl $(SRCS) $(wildcard *.h))
+HEXDATE := $(shell $(PERL) $(topdir)/now.pl $(SRCS) $(sort $(wildcard *.h)))
 endif
 ifndef DATE
 DATE    := $(shell sh $(topdir)/gen-id.sh $(VERSION) $(HEXDATE))
Index: syslinux-4.04/core/Makefile
===================================================================
--- syslinux-4.04.orig/core/Makefile
+++ syslinux-4.04/core/Makefile
@@ -37,10 +37,10 @@ BTARGET  = kwdhash.gen \
 	   isolinux.bin isolinux-debug.bin pxelinux.0
 
 # All primary source files for the main syslinux files
-NASMSRC	 := $(wildcard *.asm)
-NASMHDR  := $(wildcard *.inc)
-CSRC	 := $(wildcard *.c */*.c */*/*.c)
-SSRC	 := $(wildcard *.S */*.S */*/*.S)
+NASMSRC	 := $(sort $(wildcard *.asm))
+NASMHDR  := $(sort $(wildcard *.inc))
+CSRC	 := $(sort $(wildcard *.c */*.c */*/*.c))
+SSRC	 := $(sort $(wildcard *.S */*.S */*/*.S))
 CHDR	 := $(wildcard *.h)
 OTHERSRC := keywords
 ALLSRC    = $(NASMSRC) $(NASMHDR) $(CSRC) $(SSRC) $(CHDR) $(OTHERSRC)
Index: syslinux-4.04/gpxe/src/Makefile.housekeeping
===================================================================
--- syslinux-4.04.orig/gpxe/src/Makefile.housekeeping
+++ syslinux-4.04/gpxe/src/Makefile.housekeeping
@@ -246,9 +246,9 @@ endif
 #
 # BIN has the form bin[-[arch-]platform]
 
-ARCHS		:= $(patsubst arch/%,%,$(wildcard arch/*))
+ARCHS		:= $(patsubst arch/%,%,$(sort $(wildcard arch/*)))
 PLATFORMS	:= $(patsubst config/defaults/%.h,%,\
-		     $(wildcard config/defaults/*.h))
+		     $(sort $(wildcard config/defaults/*.h)))
 archs :
 	@$(ECHO) $(ARCHS)
 
@@ -307,8 +307,8 @@ srcdirs :
 
 # SRCS lists all .c or .S files found in any SRCDIR
 #
-SRCS	+= $(wildcard $(patsubst %,%/*.c,$(SRCDIRS)))
-SRCS	+= $(wildcard $(patsubst %,%/*.S,$(SRCDIRS)))
+SRCS	+= $(sort $(wildcard $(patsubst %,%/*.c,$(SRCDIRS))))
+SRCS	+= $(sort $(wildcard $(patsubst %,%/*.S,$(SRCDIRS))))
 srcs :
 	@$(ECHO) $(SRCS)
 
@@ -677,7 +677,7 @@ endef
 $(BIN)/%.objs : $(BIN)/%.tmp
 	$(Q)$(ECHO) $(call objs_list,$<)
 $(BIN)/%.sizes : $(BIN)/%.tmp
-	$(Q)$(SIZE) -t $(foreach OBJ,$(call objs_list,$<),$(wildcard $(BIN)/$(subst _,?,$(OBJ)).o)) | \
+	$(Q)$(SIZE) -t $(foreach OBJ,$(call objs_list,$<),$(sort $(wildcard $(BIN)/$(subst _,?,$(OBJ)).o))) | \
 		sort -g
 
 # Get dependency list for the specified target
@@ -807,7 +807,7 @@ $(BIN)/%.o : payload/%.img
 	$(Q)$(LD) -b binary -r -o $@ $< --undefined obj_payload \
 		--defsym obj_$*=0
 
-BOBJS += $(patsubst payload/%.img,$(BIN)/%.o,$(wildcard payload/*.img))
+BOBJS += $(patsubst payload/%.img,$(BIN)/%.o,$(sort $(wildcard payload/*.img)))
 
 # The "allXXXs" targets for each suffix
 #
Index: syslinux-4.04/lzo/Makefile
===================================================================
--- syslinux-4.04.orig/lzo/Makefile
+++ syslinux-4.04/lzo/Makefile
@@ -15,7 +15,7 @@ include $(topdir)/MCONFIG.build
 
 INCLUDES += -I./include
 
-LIBOBJS = $(patsubst %.c,%.o,$(wildcard src/*.c))
+LIBOBJS = $(sort $(patsubst %.c,%.o,$(wildcard src/*.c)))
 LIB     = lzo.a
 BINS    = prepcore
 
Index: syslinux-4.04/mtools/Makefile
===================================================================
--- syslinux-4.04.orig/mtools/Makefile
+++ syslinux-4.04/mtools/Makefile
@@ -13,7 +13,7 @@ SRCS     = syslinux.c \
 	   ../libinstaller/setadv.c \
 	   ../libinstaller/bootsect_bin.c \
 	   ../libinstaller/ldlinux_bin.c \
-	   $(wildcard ../libfat/*.c)
+	   $(sort $(wildcard ../libfat/*.c))
 OBJS	 = $(patsubst %.c,%.o,$(notdir $(SRCS)))
 
 .SUFFIXES: .c .o .i .s .S
Index: syslinux-4.04/com32/gpllib/Makefile
===================================================================
--- syslinux-4.04.orig/com32/gpllib/Makefile
+++ syslinux-4.04/com32/gpllib/Makefile
@@ -9,7 +9,7 @@ include ../lib/MCONFIG
 REQFLAGS += -I../gplinclude
 
 GPLDIRS := . disk dmi vpd acpi
-LIBOBJS := $(foreach dir,$(GPLDIRS),$(patsubst %.c,%.o,$(wildcard $(dir)/*.c)))
+LIBOBJS := $(sort $(foreach dir,$(GPLDIRS),$(patsubst %.c,%.o,$(wildcard $(dir)/*.c))))
 
 BINDIR   = /usr/bin
 LIBDIR   = /usr/lib
Index: syslinux-4.04/com32/hdt/Makefile
===================================================================
--- syslinux-4.04.orig/com32/hdt/Makefile
+++ syslinux-4.04/com32/hdt/Makefile
@@ -25,7 +25,7 @@ CFLAGS    += -I$(com32)/cmenu/libmenu
 MODULES	  = hdt.c32
 TESTFILES =
 
-OBJS	  = $(patsubst %.c,%.o,$(wildcard *.c))
+OBJS	  = $(sort $(patsubst %.c,%.o,$(wildcard *.c)))
 VERSION   = $(shell $(SED) -n 's/\#define VERSION \"\(.*\)\"/\1/p' hdt.h)
 CODENAME  = $(shell $(SED) -n 's/\#define CODENAME \"\(.*\)\"/\1/p' hdt.h)
 VERSION_C32 = $(shell echo $(VERSION) | $(SED) -e 's/-/_/g' | $(SED) -e 's/\./_/g')
Index: syslinux-4.04/com32/sysdump/Makefile
===================================================================
--- syslinux-4.04.orig/com32/sysdump/Makefile
+++ syslinux-4.04/com32/sysdump/Makefile
@@ -25,7 +25,7 @@ LNXLIBS	   = ../libutil/libutil_lnx.a
 MODULES	  = sysdump.c32
 TESTFILES =
 
-SRCS = $(wildcard *.c)
+SRCS = $(sort $(wildcard *.c))
 OBJS = $(patsubst %.c,%.o,$(SRCS))
 
 # The DATE is set on the make command line when building binaries for
Index: syslinux-4.04/memdisk/Makefile
===================================================================
--- syslinux-4.04.orig/memdisk/Makefile
+++ syslinux-4.04/memdisk/Makefile
@@ -23,7 +23,7 @@ NASMOPT  = -O9999
 NFLAGS   = -dDATE='"$(DATE)"'
 NINCLUDE =
 
-SRCS	 = $(wildcard *.asm *.c *.h)
+SRCS	 = $(sort $(wildcard *.asm *.c *.h))
 
 # The DATE is set on the make command line when building binaries for
 # official release.  Otherwise, substitute a hex string that is pretty much
Index: syslinux-4.04/win32/Makefile
===================================================================
--- syslinux-4.04.orig/win32/Makefile
+++ syslinux-4.04/win32/Makefile
@@ -57,7 +57,7 @@ LIBSRC   = ../libinstaller/fat.c \
 	   ../libinstaller/bootsect_bin.c \
 	   ../libinstaller/ldlinux_bin.c \
 	   ../libinstaller/mbr_bin.c \
-	   $(wildcard ../libfat/*.c)
+	   $(sort $(wildcard ../libfat/*.c))
 LIBOBJS  = $(patsubst %.c,%.obj,$(notdir $(LIBSRC)))
 
 LIB	 = syslinux.lib
Index: syslinux-4.04/win64/Makefile
===================================================================
--- syslinux-4.04.orig/win64/Makefile
+++ syslinux-4.04/win64/Makefile
@@ -47,7 +47,7 @@ LIBSRC   = ../libinstaller/fat.c \
 	   ../libinstaller/bootsect_bin.c \
 	   ../libinstaller/ldlinux_bin.c \
 	   ../libinstaller/mbr_bin.c \
-	   $(wildcard ../libfat/*.c)
+	   $(sort $(wildcard ../libfat/*.c))
 LIBOBJS  = $(patsubst %.c,%.obj,$(notdir $(LIBSRC)))
 
 LIB	 = syslinux.lib