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configure.ac: check if lzma has MT support, fix deb build/etc.

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This commit is contained in:
Will Dietz 2018-02-09 20:57:31 -06:00
parent 960e9c560e
commit 5a082ad15a
2 changed files with 4 additions and 0 deletions
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2
configure.ac
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@ -175,6 +175,8 @@ AC_SUBST(HAVE_SODIUM, [$have_sodium])
# Look for liblzma, a required dependency.
PKG_CHECK_MODULES([LIBLZMA], [liblzma], [CXXFLAGS="$LIBLZMA_CFLAGS $CXXFLAGS"])
AC_CHECK_LIB([lzma], [lzma_stream_encoder_mt],
[AC_DEFINE([HAVE_LZMA_MT], [1], [xz multithreaded compression support])])
# Look for libbrotli{enc,dec}, optional dependencies

2
src/libutil/compression.cc
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@ -192,6 +192,7 @@ struct XzSink : CompressionSink
XzSink(Sink & nextSink, const bool parallel) : nextSink(nextSink)
{
lzma_ret ret;
#ifdef HAVE_LZMA_MT
if (parallel) {
lzma_mt mt_options = {};
mt_options.flags = 0;
@ -208,6 +209,7 @@ struct XzSink : CompressionSink
ret = lzma_stream_encoder_mt(
&strm, &mt_options);
} else
#endif
ret = lzma_easy_encoder(
&strm, 6, LZMA_CHECK_CRC64);