rip out all the duplicated debug code and move into a shared file

[uclinux-h8/uClibc.git] / ldso / ldso / Makefile

diff --git a/ldso/ldso/Makefile b/ldso/ldso/Makefile
index 46891c7..3aaafb7 100644 (file)
--- a/ldso/ldso/Makefile
+++ b/ldso/ldso/Makefile
@@ -1,7 +1,6 @@
 # Makefile for uClibc
 #
-# Copyright (C) 2000 by Lineo, inc.
-# Copyright (C) 2000-2002 Erik Andersen <andersen@uclibc.org>
+# Copyright (C) 2000-2004 Erik Andersen <andersen@uclibc.org>
 #
 # This program is free software; you can redistribute it and/or modify it under
 # the terms of the GNU Library General Public License as published by the Free
@@ -16,37 +15,45 @@
 # You should have received a copy of the GNU Library General Public License
 # along with this program; if not, write to the Free Software Foundation, Inc.,
 # 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
-#
-# Derived in part from the Linux-8086 C library, the GNU C Library, and several
-# other sundry sources.  Files within this library are copyright by their
-# respective copyright holders.
 
 
 TOPDIR=../../
 include $(TOPDIR)Rules.mak
 LDSO_FULLNAME=ld-uClibc-$(MAJOR_VERSION).$(MINOR_VERSION).$(SUBLEVEL).so
 
+# reset to initial (disabling predefined CFLAGS)
+ASFLAGS=
+ifeq ($(UCLIBC_BUILD_NOEXECSTACK),y)
+ASFLAGS+=$(call check_as,--noexecstack)
+endif
 
-XXFLAGS=$(XWARNINGS) $(OPTIMIZATION) $(XARCH_CFLAGS) $(CPU_CFLAGS) $(PICFLAG) \
-       -DUCLIBC_RUNTIME_PREFIX=\"$(RUNTIME_PREFIX)\" \
-       -fno-builtin -nostdinc -I$(TOPDIR)ldso/include -I. -I$(TOPDIR)include
+XXFLAGS=$(XWARNINGS) $(SSP_DISABLE_FLAGS)
+ifeq ($(DL_FINI_CRT_COMPAT),y)
+XXFLAGS+=-D_DL_FINI_CRT_COMPAT
+endif
 
-ifeq ($(SUPPORT_LD_DEBUG),y)
-XXFLAGS=$(XWARNINGS) $(XARCH_CFLAGS) $(CPU_CFLAGS) $(PICFLAG) \
-       -DUCLIBC_RUNTIME_PREFIX=\"$(RUNTIME_PREFIX)\" \
-       -fno-builtin -nostdinc -I$(TOPDIR)ldso/include -I. -I$(TOPDIR)include
-ifeq ($(TARGET_ARCH),powerpc)
+ifeq ($(DODEBUG),y)
+# Not really much point in including debugging info, since gdb
+# can't really debug ldso, since gdb requires help from ldso to
+# debug things....
 XXFLAGS+=-Os -g3
 else
-XXFLAGS+=-O0 -g3
+XXFLAGS+=$(OPTIMIZATION)
 endif
+XXFLAGS+= $(XARCH_CFLAGS) $(CPU_CFLAGS) $(PICFLAG) \
+       -DUCLIBC_RUNTIME_PREFIX=\"$(RUNTIME_PREFIX)\" \
+       -fno-builtin -nostdinc -D_LIBC -I$(TOPDIR)ldso/include -I. -I$(TOPDIR)include
+
+# BEWARE!!! At least mips* will die if -O0 is used!!!
+XXFLAGS:=$(XXFLAGS:-O0=-O1)
+XXFLAGS+=-isystem $(shell $(CC) -print-file-name=include)
+LDFLAGS=$(CPU_LDFLAGS-y) -e _start -z now -Bsymbolic -shared --warn-common --export-dynamic --sort-common \
+       -z combreloc --discard-locals --discard-all --no-undefined
+ifeq ($(UCLIBC_BUILD_RELRO),y)
+       LDFLAGS+=-z relro
 endif
 
-XXFLAGS+=$(shell $(CC) -print-search-dirs | sed -ne "s/install: *\(.*\)/-I\1include/gp")
-LDFLAGS=$(CPU_LDFLAGS-y) -shared --warn-common --export-dynamic --sort-common \
-       -z combreloc --discard-locals --discard-all
-
-CSRC= ldso.c #hash.c readelflib1.c $(TARGET_ARCH)/elfinterp.c
+CSRC= ldso.c
 COBJS=$(patsubst %.c,%.o, $(CSRC))
 ASRC=$(shell ls $(TARGET_ARCH)/*.S)
 AOBJS=$(patsubst %.S,%.o, $(ASRC))
@@ -64,36 +71,28 @@ ifeq ($(strip $(SUPPORT_LD_DEBUG_EARLY)),y)
 XXFLAGS+=-D__SUPPORT_LD_DEBUG_EARLY__
 endif
 
-ifeq ($(strip $(FORCE_SHAREABLE_TEXT_SEGMENTS)),y)
-XXFLAGS+=-DFORCE_SHAREABLE_TEXT_SEGMENTS
-endif
-
 #This stuff will not work with -fomit-frame-pointer
 XXFLAGS := $(XXFLAGS:-fomit-frame-pointer=)
 
-all: lib
+all: $(LDSO_FULLNAME)
 
-lib:: _dl_progname.h $(OBJS) $(DLINK_OBJS)
-       $(LD) $(LDFLAGS) -e _dl_boot -soname=$(UCLIBC_LDSO) \
-               -o $(LDSO_FULLNAME) $(OBJS) $(LIBGCC);
+$(LDSO_FULLNAME): $(OBJS) $(DLINK_OBJS)
+       $(LD) $(LDFLAGS) -soname=$(UCLIBC_LDSO) \
+               -o $(LDSO_FULLNAME) $(OBJS) $(LIBGCC)
        $(INSTALL) -d $(TOPDIR)lib
        $(INSTALL) -m 755 $(LDSO_FULLNAME) $(TOPDIR)lib
        $(LN) -sf $(LDSO_FULLNAME) $(TOPDIR)lib/$(UCLIBC_LDSO)
 
-_dl_progname.h: Makefile
-       echo "const char *_dl_progname=\""$(UCLIBC_LDSO)"\";" > _dl_progname.h
-       echo "#include \"$(TARGET_ARCH)/elfinterp.c\"" >> _dl_progname.h
-
-
 $(COBJS): %.o : %.c
        $(CC) $(XXFLAGS) -I../libdl -c $< -o $@
        $(STRIPTOOL) -x -R .note -R .comment $*.o
 
 $(AOBJS): %.o : %.S
-       $(CC) $(XXFLAGS) -I../libdl -c $< -o $@
+       $(CC) $(XXFLAGS) $(ASFLAGS) -I../libdl -c $< -o $@
        $(STRIPTOOL) -x -R .note -R .comment $*.o
 
-ldso.o: ldso.c hash.c readelflib1.c $(TARGET_ARCH)/elfinterp.c _dl_progname.h
+ldso.o: $(CSRC) dl-elf.c dl-hash.c dl-startup.c dl-debug.c \
+       $(TARGET_ARCH)/*.h $(TARGET_ARCH)/*.c $(TOPDIR)ldso/include/*.h
 
 clean:
-       $(RM) $(UCLIBC_LDSO)* $(OBJS) $(LDSO_FULLNAME)* core *.o *.a *.s *.i _dl_progname.h ldso.h *~
+       $(RM) $(UCLIBC_LDSO)* $(OBJS) $(LDSO_FULLNAME)* core *.o *.a *.s *.i ldso.h *~