| ## -*- makefile -*- ------------------------------------------------------- |
| ## |
| ## Copyright 2008 H. Peter Anvin - All Rights Reserved |
| ## |
| ## This program 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, Inc., 51 Franklin St, Fifth Floor, |
| ## Boston MA 02110-1301, USA; either version 2 of the License, or |
| ## (at your option) any later version; incorporated herein by reference. |
| ## |
| ## ----------------------------------------------------------------------- |
| |
| ## |
| ## ELF common configurables |
| ## |
| |
| include $(MAKEDIR)/syslinux.mk |
| |
| # Support IA32 and x86_64 platforms with one build |
| # Set up architecture specifics; for cross compilation, set ARCH as apt |
| GCCOPT := $(call gcc_ok,-std=gnu99,) |
| ifeq ($(ARCH),i386) |
| GCCOPT += $(call gcc_ok,-m32,) |
| GCCOPT += $(call gcc_ok,-march=i386) |
| GCCOPT += $(call gcc_ok,-mpreferred-stack-boundary=2,) |
| endif |
| ifeq ($(ARCH),x86_64) |
| GCCOPT += $(call gcc_ok,-m64,) |
| GCCOPT += $(call gcc_ok,-march=x86-64) |
| #let preferred-stack-boundary be default (=4) |
| endif |
| GCCOPT += -Os -fomit-frame-pointer |
| GCCOPT += $(call gcc_ok,-fno-stack-protector,) |
| GCCOPT += $(call gcc_ok,-fwrapv,) |
| GCCOPT += $(call gcc_ok,-freg-struct-return,) |
| GCCOPT += $(call gcc_ok,-fno-exceptions,) |
| GCCOPT += $(call gcc_ok,-fno-asynchronous-unwind-tables,) |
| # Note -fPIE does not work with ld on x86_64, try -fPIC instead |
| # Does BIOS build depend on -fPIE? |
| GCCOPT += $(call gcc_ok,-fPIC) |
| GCCOPT += $(call gcc_ok,-falign-functions=0,-malign-functions=0) |
| GCCOPT += $(call gcc_ok,-falign-jumps=0,-malign-jumps=0) |
| GCCOPT += $(call gcc_ok,-falign-labels=0,-malign-labels=0) |
| GCCOPT += $(call gcc_ok,-falign-loops=0,-malign-loops=0) |
| |
| com32 = $(topdir)/com32 |
| core = $(topdir)/core |
| |
| ifneq ($(NOGPL),1) |
| GPLLIB = $(objdir)/com32/gpllib/libgpl.c32 |
| GPLINCLUDE = -I$(com32)/gplinclude |
| else |
| GPLLIB = |
| GPLINCLUDE = |
| endif |
| |
| CFLAGS = $(GCCOPT) $(GCCWARN) -W -Wall \ |
| -fomit-frame-pointer -D__COM32__ -D__FIRMWARE_$(FIRMWARE)__ -DDYNAMIC_MODULE \ |
| -nostdinc -iwithprefix include \ |
| -I$(com32)/libutil/include -I$(com32)/include \ |
| -I$(com32)/include/sys $(GPLINCLUDE) -I$(core)/include \ |
| -I$(objdir) -DLDLINUX=\"$(LDLINUX)\" |
| ifeq ($(FWCLASS),EFI) |
| GCCOPT += -mno-red-zone |
| else |
| GCCOPT += -mregparm=3 -DREGPARM=3 |
| endif |
| |
| SFLAGS = $(GCCOPT) -D__COM32__ -D__FIRMWARE_$(FIRMWARE)__ |
| LDFLAGS = -m elf_$(ARCH) -shared --hash-style=gnu -T $(com32)/lib/$(ARCH)/elf.ld --as-needed |
| LIBGCC := $(shell $(CC) $(GCCOPT) --print-libgcc) |
| |
| LNXCFLAGS = -I$(com32)/libutil/include -W -Wall -O -g -D_GNU_SOURCE |
| LNXSFLAGS = -g |
| LNXLDFLAGS = -g |
| |
| C_LIBS += $(objdir)/com32/libutil/libutil.c32 $(GPLLIB) \ |
| $(objdir)/com32/lib/libcom32.c32 |
| C_LNXLIBS = $(objdir)/com32/libutil/libutil_lnx.a \ |
| $(objdir)/com32/elflink/ldlinux/ldlinux_lnx.a |
| |
| .SUFFIXES: .lss .c .o |
| |
| .PRECIOUS: %.o |
| %.o: %.S |
| $(CC) $(SFLAGS) -c -o $@ $< |
| |
| .PRECIOUS: %.o |
| %.o: %.c |
| $(CC) $(CFLAGS) -c -o $@ $< |
| |
| .PRECIOUS: %.lo |
| %.lo: %.S |
| $(CC) $(LNXSFLAGS) -c -o $@ $< |
| |
| .PRECIOUS: %.lo |
| %.lo: %.c |
| $(CC) $(LNXCFLAGS) -c -o $@ $< |
| |
| .PRECIOUS: %.lnx |
| %.lnx: %.lo $(LNXLIBS) $(C_LNXLIBS) |
| $(CC) $(LNXCFLAGS) -o $@ $^ |
| |
| .PRECIOUS: %.elf |
| %.elf: %.o $(C_LIBS) |
| $(LD) $(LDFLAGS) -o $@ $^ |
| |
| %.c32: %.elf |
| $(OBJCOPY) --strip-debug --strip-unneeded $< $@ |
