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Subject: Re: ANNOUNCE: DJGPP port of FSU Pthreads 3.14 uploaded.
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Hi,

On Tuesday, March 7, 2017 at 1:58:34 PM UTC-6, Juan Manuel Guerrero wrote:
> 
> I have also tried to compile p7zip_9.20.1_src_all.tar.bz2
> but I do not have yasm installed thus the build failed.
> May be you want to give the port a try.

It's been a few years since I bothered with p7zip. I don't
remember all of the details and didn't study my old makefile
closely here. But, IIRC, you don't need YASM at all.

Latest 7-Zip proper is 16.04 (from last October) but 16.02 is
still latest p7zip proper (from last May / ported in July).

https://sourceforge.net/projects/p7zip/files/p7zip/16.02/

Try using this makefile.machine to build p7zip 16.02 :

*** makefile.machine ***
# p7zip 16.02 using DJGPP (+ FSU Pthreads)

ifeq ($(DJGPP),)
$(error Please install/enable DJGPP first!)
endif

OPTIMIZE=-O -mtune=i686 -s
OPTFLAGS=$(OPTIMIZE)

ALLFLAGS=$(OPTFLAGS) \
       -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE \
       -DNDEBUG -D_REENTRANT -DENV_UNIX \
       -DETIMEDOUT=110 \
       $(LOCAL_FLAGS)

CXX=gpp
CC=gcc

LINK_SHARED=
LOCAL_LIBS_DLL=$(LOCAL_LIBS)
LOCAL_LIBS=-lgthreads

OBJ_CRC32=$(OBJ_CRC32_C)
OBJ_AES=
*** end ***

A quick attempt seems to build okay. I then used that 7za.exe
to unpack/rebuild sources again, and the resulting .EXE is the same.
Try it yourself. ("redir -t" says it took roughly 4 + 1/2 minutes
under DOSEMU.)

> Because the FSU pthread library was the second pthread
> library available that used to have some DJGPP support
> I decided to port it to DJGPP 2.05.  May be it is of
> some use for someone else.

IIRC, in older p7zip builds, GNU pth and Watt-32 were used, but
FSU pthreads is standalone, thus smaller binaries. So yes, at
least in this particular case, it's indirectly useful.