1 files changed, 98 insertions, 0 deletions
diff --git a/mk/com32.mk b/mk/com32.mk
new file mode 100644
index 00000000..4a6caae9
--- /dev/null
+++ b/mk/com32.mk
@@ -0,0 +1,98 @@
+## -*- makefile -*- -------------------------------------------------------
+##
+##   Copyright 2008-2009 H. Peter Anvin - All Rights Reserved
+##   Copyright 2009 Intel Corporation; author: H. Peter Anvin
+##
+##   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.
+##
+## -----------------------------------------------------------------------
+
+##
+## COM32 common configurables
+##
+
+include $(MAKEDIR)/syslinux.mk
+
+GCCOPT := $(call gcc_ok,-std=gnu99,)
+GCCOPT += $(call gcc_ok,-m32,)
+GCCOPT += $(call gcc_ok,-fno-stack-protector,)
+GCCOPT += $(call gcc_ok,-fwrapv,)
+GCCOPT += $(call gcc_ok,-freg-struct-return,)
+GCCOPT += -mregparm=3 -DREGPARM=3 -march=i386 -Os
+GCCOPT += $(call gcc_ok,-fPIE,-fPIC)
+GCCOPT += $(call gcc_ok,-fno-exceptions,)
+GCCOPT += $(call gcc_ok,-fno-asynchronous-unwind-tables,)
+GCCOPT += $(call gcc_ok,-fno-strict-aliasing,)
+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)
+GCCOPT += $(call gcc_ok,-mpreferred-stack-boundary=2,)
+GCCOPT += $(call gcc_ok,-incoming-stack-boundary=2,)
+
+com32  := $(topdir)/com32
+RELOCS := $(com32)/tools/relocs
+
+ifneq ($(NOGPL),1)
+GPLLIB     = $(com32)/gpllib/libcom32gpl.a
+GPLINCLUDE = -I$(com32)/gplinclude
+else
+GPLLIB     =
+GPLINCLUDE =
+endif
+
+CFLAGS     = $(GCCOPT) $(GCCWARN) -march=i386 \
+	     -fomit-frame-pointer -D__COM32__ \
+	     -nostdinc -iwithprefix include \
+	     -I$(com32)/libutil/include -I$(com32)/include $(GPLINCLUDE)
+SFLAGS     = $(GCCOPT) $(GCCWARN) -march=i386 \
+	     -fomit-frame-pointer -D__COM32__ \
+	     -nostdinc -iwithprefix include \
+	     -I$(com32)/libutil/include -I$(com32)/include $(GPLINCLUDE)
+
+COM32LD	   = $(com32)/lib/com32.ld
+LDFLAGS    = -m elf_i386 --emit-relocs -T $(COM32LD)
+LIBGCC    := $(shell $(CC) $(GCCOPT) --print-libgcc)
+
+LNXCFLAGS  = -I$(com32)/libutil/include $(GCCWARN) -O -g \
+	     -D_GNU_SOURCE -D_FORTIFY_SOURCE=0 -Wno-error
+LNXSFLAGS  = -g
+LNXLDFLAGS = -g
+
+C_LIBS	   = $(com32)/libutil/libutil_com.a $(GPLLIB) \
+	     $(com32)/lib/libcom32.a $(LIBGCC)
+C_LNXLIBS  = $(com32)/libutil/libutil_lnx.a
+
+.SUFFIXES: .lss .c .lo .o .elf .c32 .lnx
+
+.PRECIOUS: %.o
+%.o: %.S
+	$(CC) $(MAKEDEPS) $(SFLAGS) -c -o $@ $<
+
+.PRECIOUS: %.o
+%.o: %.c
+	$(CC) $(MAKEDEPS) $(CFLAGS) -c -o $@ $<
+
+.PRECIOUS: %.elf
+%.elf: %.o $(LIBS) $(C_LIBS) $(COM32LD)
+	$(LD) $(LDFLAGS) -o $@ $(filter-out $(COM32LD),$^)
+
+.PRECIOUS: %.lo
+%.lo: %.S
+	$(CC) $(MAKEDEPS) $(LNXSFLAGS) -c -o $@ $<
+
+.PRECIOUS: %.lo
+%.lo: %.c
+	$(CC) $(MAKEDEPS) $(LNXCFLAGS) -c -o $@ $<
+
+.PRECIOUS: %.lnx
+%.lnx: %.lo $(LNXLIBS) $(C_LNXLIBS)
+	$(CC) $(LNXCFLAGS) -o $@ $^
+
+%.c32: %.elf
+	$(OBJCOPY) -O binary $< $@
+	$(RELOCS) $< >> $@ || ( rm -f $@ ; false )