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| author | Tim Kientzle <kientzle@gmail.com> | 2016-04-27 23:15:08 -0700 |
|---|---|---|
| committer | Tim Kientzle <kientzle@gmail.com> | 2016-04-27 23:15:08 -0700 |
| commit | b05a2733918afad8f4d224e0fbbf80dc73475bf4 (patch) | |
| tree | f07cc693a56c3f946d28ca69cd033708bc8b5d0f /configure.ac | |
| parent | 1ee0eb7953c57f580a32e093da16e276506cf991 (diff) | |
| download | libarchive-b05a2733918afad8f4d224e0fbbf80dc73475bf4.tar.gz | |
Issue 692: More robust check for lzma_stream_encoder_mt
Diffstat (limited to 'configure.ac')
| -rw-r--r-- | configure.ac | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/configure.ac b/configure.ac index 851007d7..ca8bf6b1 100644 --- a/configure.ac +++ b/configure.ac @@ -366,7 +366,17 @@ AC_ARG_WITH([lzma], if test "x$with_lzma" != "xno"; then AC_CHECK_HEADERS([lzma.h]) AC_CHECK_LIB(lzma,lzma_stream_decoder) - AC_CHECK_FUNCS([lzma_stream_encoder_mt]) + # Some pre-release (but widely distributed) versions of liblzma + # included a disabled version of lzma_stream_encoder_mt that + # fools a naive AC_CHECK_LIB or AC_CHECK_FUNC, so we need + # to do something more complex here: + AC_CACHE_CHECK( + [whether we have multithread support in lzma], + ac_cv_lzma_has_mt, + [AC_COMPILE_IFELSE([ + AC_LANG_PROGRAM([[#include <lzma.h>]], + [[lzma_stream_encoder_mt(0, 0);]])], + [ac_cv_lzma_has_mt=yes], [ac_cv_lzma_has_mt=no])]) fi AC_ARG_WITH([lzo2], |