Re: rolo bootloader problem

Hi,
> > I want using rolo as the bootloader in my sc520 board, but when I > compiled rolo, I met problem. > > When the ld86 link object files to produce rolo.com that output: > "undefined symbol:_assert". I think that is head files problem, so I > modify Makefile to indicate include path, but the case is same. I > don't know how to solve the problem. > > I make rolo with the "bcc "which I download and also try another one > in redhat9.0, but the problems are same. > > Please give me some suggestion.

This is IMHO a bug in the BCC distribution: in assert.h, there is an "#ifdef" that should be an "#ifndef". Here is a patch against the current dev86 source tree to fix this problem (and a few others, too):

-------------------------- cut here ------------------------------ diff -urN dev86-0.16.11/libc/bios/Makefile dev86-0.16.11.rob/libc/bios/Makefile

--- dev86-0.16.11/libc/bios/Makefile Sat Aug 3 14:04:40 2002

+++ dev86-0.16.11.rob/libc/bios/Makefile Mon Jul 28 21:27:49 2003 @@ -4,7 +4,7 @@ ifeq ($(LIB_OS),BIOS) ASRC=bios.c

-AOBJ=bios_start.o bios_isatty.o bios_nofiles.o \

+AOBJ=bios_start.o bios_isatty.o bios_kbhit.o bios_nofiles.o \ bios_read.o bios_write.o bios_lseek.o bios_close.o BSRC=bios_vid.c @@ -12,7 +12,7 @@ bios_rdline.o CSRC=bios_min.c

-COBJ=bios_putc.o bios_getc.o

+COBJ=bios_putc.o bios_getc.o bios_khit.o DSRC=bios_disk.c DOBJ=bios_disk_rd.o bios_disk_wr.o bios_disk_rs.o bios_get_dpt.o diff -urN dev86-0.16.11/libc/error/Makefile dev86-0.16.11.rob/libc/error/Makefile

--- dev86-0.16.11/libc/error/Makefile Sat Mar 8 21:11:22 1997

+++ dev86-0.16.11.rob/libc/error/Makefile Mon Jul 28 21:09:46 2003 @@ -6,13 +6,12 @@ ifeq ($(LIB_OS),ELKS) OBJ=error.o sys_errlist.o perror.o sys_siglist.o __assert.o +else +OBJ=__assert.o +endif all: $(LIBC)($(OBJ)) @$(RM) $(OBJ)

-else

-all:

- @:

-endif clean: rm -f *.o libc.a diff -urN dev86-0.16.11/libc/error/__assert.c dev86-0.16.11.rob/libc/error/__assert.c

--- dev86-0.16.11/libc/error/__assert.c Sun Mar 3 22:29:51 1996

+++ dev86-0.16.11.rob/libc/error/__assert.c Mon Jul 28 21:10:59 2003 @@ -24,5 +24,10 @@ errput(" at line "); errput(itoa(linenumber)); errput(".\n"); +#ifdef __STANDALONE__

errput("Program Halted.\n");

while(1);

+#else abort(); +#endif } diff -urN dev86-0.16.11/libc/include/assert.h dev86-0.16.11.rob/libc/include/assert.h

--- dev86-0.16.11/libc/include/assert.h Sat Feb 24 16:21:20 1996

+++ dev86-0.16.11.rob/libc/include/assert.h Mon Jul 28 20:10:15 2003 @@ -1,4 +1,4 @@

-#ifdef __ASSERT_H

+#ifndef __ASSERT_H #define __ASSERT_H #include

-------------------------- cut here ------------------------------ Get the latest source tarball (version 0.16.11) from

formatting link

apply this patch, do a make; make install. That should do it.

Rob