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GH-132983: Use a standard autoconf version check for zstd by AA-Turner · Pull Request #133479 · python/cpython · GitHub

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GH-132983: Use a standard autoconf version check for zstd #133479

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Merged
AA-Turner merged 1 commit into from
May 6, 2025
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GH-132983: Use a standard autoconf version check for zstd #133479

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161 changes: 22 additions & 139 deletions configure
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28 changes: 5 additions & 23 deletions configure.ac
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Original file line number Diff line number Diff line change
Expand Up @@ -5386,32 +5386,14 @@ PKG_CHECK_MODULES([LIBLZMA], [liblzma], [have_liblzma=yes], [
])
])

have_libzstd=no
AC_DEFUN([TEST_ZSTD_VERSION],[
AC_MSG_CHECKING([if libzstd is new enough])

dnl TODO(emmatyping): check if we can set a C define for the minimum version
dnl to re-use here and in the header compile check

dnl This is checked when both a package is found and we do fallback searches
dnl If you update the minimum version here, you should update the compile
dnl check in Modules/_zstd/_zstdmodule.h
AC_RUN_IFELSE([AC_LANG_PROGRAM([@%:@include "zstd.h"], [
#if ZSTD_VERSION_NUMBER < 10405
exit(1);
#endif
])], [py__zstd_too_old=no], [py__zstd_too_old=yes])
dnl Important to record that we have libzstd
have_libzstd=yes
])

PKG_CHECK_MODULES([LIBZSTD], [libzstd], [TEST_ZSTD_VERSION()], [
dnl zstd 1.4.5 added ZDICT_finalizeDictionary
PKG_CHECK_MODULES([LIBZSTD], [libzstd >= 1.4.5], [have_libzstd=yes], [
WITH_SAVE_ENV([
CPPFLAGS="$CPPFLAGS $LIBZSTD_CFLAGS"
LIBS="$LIBS $LIBZSTD_LIBS"
AC_CHECK_HEADERS([zstd.h zdict.h], [
AC_CHECK_LIB([zstd], [ZDICT_finalizeDictionary],
[TEST_ZSTD_VERSION()], [have_libzstd=no])
PY_CHECK_LIB([zstd], [ZDICT_finalizeDictionary],
[have_libzstd=yes], [have_libzstd=no])
], [have_libzstd=no])
AS_VAR_IF([have_libzstd], [yes], [
LIBZSTD_CFLAGS=${LIBZSTD_CFLAGS-""}
Expand Down Expand Up @@ -8072,7 +8054,7 @@ PY_STDLIB_MOD([_bz2], [], [test "$have_bzip2" = yes],
[$BZIP2_CFLAGS], [$BZIP2_LIBS])
PY_STDLIB_MOD([_lzma], [], [test "$have_liblzma" = yes],
[$LIBLZMA_CFLAGS], [$LIBLZMA_LIBS])
PY_STDLIB_MOD([_zstd], [test "$py__zstd_too_old" = no], [test "$have_libzstd" = yes],
PY_STDLIB_MOD([_zstd], [], [test "$have_libzstd" = yes],
[$LIBZSTD_CFLAGS], [$LIBZSTD_LIBS])

dnl OpenSSL bindings
Expand Down
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