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| author | David Oberhollenzer <david.oberhollenzer@sigma-star.at> | 2020-09-17 13:09:06 +0200 |
|---|---|---|
| committer | David Oberhollenzer <david.oberhollenzer@sigma-star.at> | 2020-09-17 13:10:25 +0200 |
| commit | b52a9567520570bd6c850bcad3a6966f68639ef7 (patch) | |
| tree | b63e6515b25020b3abdfdd63731db0d44ac54925 /m4 | |
| parent | ec38f4fa90d65362002a901b2d74be09fc6b128c (diff) | |
Add a check whether libzstd supports stream compression
Streaming compression was added fairly recently to zstd (and then
the API was changed a few times).
Rather than rely on libzstd versioning macros, this commit adds an
m4 script to test at configure time if the enums/functions we need
are available by trying to compile a small sample.
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
Diffstat (limited to 'm4')
| -rw-r--r-- | m4/zstd.m4 | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/m4/zstd.m4 b/m4/zstd.m4 new file mode 100644 index 0000000..f644264 --- /dev/null +++ b/m4/zstd.m4 @@ -0,0 +1,11 @@ +AC_DEFUN([AC_TEST_ZSTD_STREAM], [ + AC_MSG_CHECKING([whether zstd supports stream compression]) + AC_LANG_PUSH([C]) + ac_zstd_save_CFLAGS="$CFLAGS" + CFLAGS="$CFLAGS $ZSTD_CFLAGS" + AC_COMPILE_IFELSE([AC_LANG_PROGRAM([#include <zstd.h>], [ZSTD_EndDirective op = ZSTD_e_end; ZSTD_compressStream2(NULL, NULL, NULL, op);])], + AC_DEFINE(HAVE_ZSTD_STREAM, 1, [Does zstd support stream compression?]) + AC_MSG_RESULT([yes]), AC_MSG_RESULT([no])) + CFLAGS=$ac_zstd_save_CFLAGS + AC_LANG_POP([C]) +]) |