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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>
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Conflicts:
Makefile
NEWS
com32/cmenu/Makefile
com32/elflink/ldlinux/Makefile
com32/gfxboot/Makefile
com32/gpllib/Makefile
com32/include/sys/module.h
com32/lib/Makefile
com32/lib/sys/module/elf_module.c
com32/menu/Makefile
com32/rosh/Makefile
com32/samples/Makefile
core/init.c
mk/elf.mk
Signed-off-by: Matt Fleming <matt.fleming@intel.com>
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Always strip the modules; they are too big unstripped. Specifically,
we generate unstripped *.elf files, and then convert them to
stripped *.c32 files.
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
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Now that we have multiple firmware backends it no longer makes sense
to write object files to the same directory as their source. A better
solution is to write the object files to a per-firmware directory
under a top-level object directory.
The top-level object directory can be specified on the command-line
with the O= variable, e.g. make O=/tmp/obj. If no top-level object
directory is specified an 'obj' directory is created in the top-level
of the Syslinux source repository.
All the existing make targets continue to work as before, however now
they apply to all firmware backends, e.g. 'make installer' will build
the BIOS, 32-bit EFI and 64-bit EFI installers and place them under
$(OBJ)/bios, $(OBJ)/efi32 and $(OBJ)/efi64 respectively.
Note unlike every other bit of Syslinux, the gpxe objects are still
kept in the src directory, e.g. gpxe/src, since gpxe is only required
by the BIOS backend.
It is possible to specify a make target for a specific firmware or
list of firmware with the following syntax,
make [firmware[,firmware]] [target[,target]]
To clean the object directory for just the BIOS firmware type,
'make bios clean'
To build both the 32-bit and 64-bit EFI installers type,
'make efi32 efi64 installer'
Since the Syslinux make infrastructure is now more complex a new file
doc/building.txt has been created to explain how to build Syslinux.
The top-level Makefile now exports some make variables for use in
module Makefiles,
- topdir - the top-level source directory of the Syslinux
repository, e.g. /usr/src/syslinux
- objdir - the top-level object directory for the firmware
backend currently being built, e.g. /obj/syslinux/bios
- SRC - the source directory in the Syslinux repository for the
module currently being built,
e.g. /usr/src/syslinux/com32/libupload
- OBJ - the object directory for the module currently being
built, e.g. /obj/syslinux/bios/com32/libupload
Since we're rewriting the Makefile infrastructure anyway it seemed
like a good idea to add parallel support. By writing subdirectories as
prequisites for make targets the objects in those subdirectories can
be built in parallel.
Signed-off-by: Matt Fleming <matt.fleming@intel.com>
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com32/elflink/modules was originally created to house ELF modules and
keep them separate from the COM32 modules as the elflink branch was
being developed. However, this has inadvertently created a maintenance
nightmare because code was copied from elsewhere in the tree into
com32/elflink/modules, resulting in duplication. Bug fixes have been
going into the original code but have not been merged onto the elflink
branch, leaving the duplicate code in com32/elflink/modules buggy.
So let's delete this directory. There really is no reason to keep ELF
and COM32 modules separate because there's no reason to need both
COM32 and ELF modules to coexist. ELF is a far superior object file
format and all modules are not emitted as ELF objects.
Now that we're outputting ELF modules we can use dynamic memory
instead of the cs_bounce bounce buffer.
This commit requires a certain amount of shuffling for some
files. quicksort.c isn't a module and belongs as part of the util
library. cli.h belongs in com32/include so that other modules can make
use of the cli code in ldlinux.c32.
All libraries are now ELF shared libraries which are only loaded to
fixup unresolved symbols for executable modules and renamed from *.a
to *.c32. This reduces the runtime memory footprint because libraries
are only loaded when needed and because every executable no longer
gets its own copy of code/data (as it would if linking with a static
library). Also, remove MINLIBOBJS from libcom32.c32 because it is
already part of libcom32min.a and we don't want to have any duplicate
symbols between the core (which links with libcom32min.a) and
libcom32.c32.
Welcome to the New World Order of ELF modules!
Signed-off-by: Matt Fleming <matt.fleming@linux.intel.com>
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$(C_LIBS) doesn't include $(LIBS) so we need to add it explicitly.
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
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Resolved Conflicts:
com32/hdt/Makefile
com32/sysdump/Makefile
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
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com32.mk already includes the necessary libraries in $(C_LIBS), we
don't need to list them again in $(LIBS).
Signed-off-by: Matt Fleming <matt.fleming@linux.intel.com>
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Move the MCONFIG files into a mk/ directory and give them more
descriptive names.
This is purely a cosmetic change to make the 'include' directives a
bit more coherent by making it obvious exactly which MCONFIG file
we're including. For example, in com32/lua/src/Makefile we exchange
the line,
include ../../MCONFIG
for the much more comprehensible,
include $(MAKEDIR)/com32.mk
Signed-off-by: Matt Fleming <matt.fleming@linux.intel.com>
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This patch remove ugly relative includes like ../something.h
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This commit creates a library to upload content via 3 backends
(srec/ymodem/tftp).
Code came from sysdump and got librarized for being used more easily
by more other com32 modules.
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Make the gen-id.sh script actually do the right thing...
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
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Record the sysdump version used to actually generate a data set.
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
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Port memdump to com32, with the intent of modifying and enhancing it.
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
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