[Bug 234217] Change compilation option for libarchive

[bugzilla-noreply at freebsd.org]

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=234217

            Bug ID: 234217
           Summary: Change compilation option for libarchive
           Product: Base System
           Version: 11.2-RELEASE
          Hardware: Any
                OS: Any
            Status: New
          Severity: Affects Only Me
          Priority: ---
         Component: bin
          Assignee: bugs at FreeBSD.org
          Reporter: alexandre.martins at stormshield.eu

Greetings,

Currently, the libarchive is compiled without the flag
HAVE_LZMA_STREAM_ENCODER_MT. It may be nice to add this flag to allow
compression on multiple CPU.

On my machine (4 CPU), if I compress 4GB of 0 in the standard way:

$ time tar --options threads=0 -cJf test.txz zero

real    1m18,200s
user    1m16,910s
sys     0m0,941s

When libarchive is compiled with the flag:

$ time tar --options threads=0 -cJf test.txz zero

real    0m21,810s
user    1m17,612s
sys     0m1,478s

The patch:
-+-+-+-+-+-+-
--- Makefile.orig       2018-12-20 16:09:26.863988000 +0100
+++ Makefile    2018-12-20 16:09:47.393163000 +0100
@@ -7,7 +7,7 @@ _LIBARCHIVEDIR= ${SRCTOP}/contrib/libarc
 LIB=   archive

 LIBADD=        z bz2 lzma bsdxml
-CFLAGS+= -DHAVE_BZLIB_H=1 -DHAVE_LIBLZMA=1 -DHAVE_LZMA_H=1
+CFLAGS+= -DHAVE_BZLIB_H=1 -DHAVE_LIBLZMA=1 -DHAVE_LZMA_H=1
-DHAVE_LZMA_STREAM_ENCODER_MT=1

 # FreeBSD SHLIB_MAJOR value is managed as part of the FreeBSD system.
 # It has no real relation to the libarchive version number.
-+-+-+-+-+-+-

Best regards,

Alexandre

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