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diff --git a/deps/libchdr/deps/zstd-1.5.5/tests/libzstd_builds.sh b/deps/libchdr/deps/zstd-1.5.5/tests/libzstd_builds.sh
new file mode 100755
index 00000000..f9e1e76c
--- /dev/null
+++ b/deps/libchdr/deps/zstd-1.5.5/tests/libzstd_builds.sh
@@ -0,0 +1,104 @@
+#!/bin/sh -e
+
+DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
+
+ECHO=echo
+RM="rm -f"
+GREP="grep"
+INTOVOID="/dev/null"
+
+die() {
+    $ECHO "$@" 1>&2
+    exit 1
+}
+
+isPresent() {
+    $GREP $@ tmplog || die "$@" "should be present"
+}
+
+mustBeAbsent() {
+    $GREP $@ tmplog && die "$@ should not be there !!"
+    $ECHO "$@ correctly not present"  # for some reason, this $ECHO must exist, otherwise mustBeAbsent() always fails (??)
+}
+
+# default compilation : all features enabled - no zbuff
+$ECHO "testing default library compilation"
+CFLAGS= make -C $DIR/../lib libzstd libzstd.a > $INTOVOID
+nm $DIR/../lib/libzstd.a | $GREP "\.o" > tmplog
+isPresent "zstd_compress.o"
+isPresent "zstd_decompress.o"
+isPresent "zdict.o"
+isPresent "zstd_v07.o"
+mustBeAbsent "zbuff_compress.o"
+$RM tmplog
+
+# Check that the exec-stack bit isn't set
+readelf -lW $DIR/../lib/libzstd.so | $GREP "GNU_STACK" > tmplog
+mustBeAbsent "RWE"
+$RM $DIR/../lib/libzstd.a $DIR/../lib/libzstd.so* tmplog
+
+# compression disabled => also disable zdict
+$ECHO "testing with compression disabled"
+ZSTD_LIB_COMPRESSION=0 CFLAGS= make -C $DIR/../lib libzstd.a > $INTOVOID
+nm $DIR/../lib/libzstd.a | $GREP "\.o" > tmplog
+mustBeAbsent "zstd_compress.o"
+isPresent "zstd_decompress.o"
+mustBeAbsent "zdict.o"
+isPresent "zstd_v07.o"
+mustBeAbsent "zbuff_compress.o"
+$RM $DIR/../lib/libzstd.a tmplog
+
+# decompression disabled => also disable legacy
+$ECHO "testing with decompression disabled"
+ZSTD_LIB_DECOMPRESSION=0 CFLAGS= make -C $DIR/../lib libzstd.a > $INTOVOID
+nm $DIR/../lib/libzstd.a | $GREP "\.o" > tmplog
+isPresent "zstd_compress.o"
+mustBeAbsent "zstd_decompress.o"
+isPresent "zdict.o"
+mustBeAbsent "zstd_v07.o"
+mustBeAbsent "zbuff_compress.o"
+$RM $DIR/../lib/libzstd.a tmplog
+
+# deprecated function disabled => only remove zbuff
+$ECHO "testing with deprecated functions disabled"
+ZSTD_LIB_DEPRECATED=0 CFLAGS= make -C $DIR/../lib libzstd.a > $INTOVOID
+nm $DIR/../lib/libzstd.a | $GREP "\.o" > tmplog
+isPresent "zstd_compress.o"
+isPresent "zstd_decompress.o"
+isPresent "zdict.o"
+isPresent "zstd_v07.o"
+mustBeAbsent "zbuff_compress.o"
+$RM $DIR/../lib/libzstd.a tmplog
+
+# deprecated function enabled => zbuff present
+$ECHO "testing with deprecated functions enabled"
+ZSTD_LIB_DEPRECATED=1 CFLAGS= make -C $DIR/../lib libzstd.a > $INTOVOID
+nm $DIR/../lib/libzstd.a | $GREP "\.o" > tmplog
+isPresent "zstd_compress.o"
+isPresent "zstd_decompress.o"
+isPresent "zdict.o"
+isPresent "zstd_v07.o"
+isPresent "zbuff_compress.o"
+$RM $DIR/../lib/libzstd.a tmplog
+
+# dictionary builder disabled => only remove zdict
+$ECHO "testing with dictionary builder disabled"
+ZSTD_LIB_DICTBUILDER=0 CFLAGS= make -C $DIR/../lib libzstd.a > $INTOVOID
+nm $DIR/../lib/libzstd.a | $GREP "\.o" > tmplog
+isPresent "zstd_compress.o"
+isPresent "zstd_decompress.o"
+mustBeAbsent "zdict.o"
+isPresent "zstd_v07.o"
+mustBeAbsent "zbuff_compress.o"
+$RM $DIR/../lib/libzstd.a tmplog
+
+# both decompression and dictionary builder disabled => only compression remains
+$ECHO "testing with both decompression and dictionary builder disabled (only compression remains)"
+ZSTD_LIB_DECOMPRESSION=0 ZSTD_LIB_DICTBUILDER=0 CFLAGS= make -C $DIR/../lib libzstd.a > $INTOVOID
+nm $DIR/../lib/libzstd.a | $GREP "\.o" > tmplog
+isPresent "zstd_compress.o"
+mustBeAbsent "zstd_decompress.o"
+mustBeAbsent "zdict.o"
+mustBeAbsent "zstd_v07.o"
+mustBeAbsent "zbuff_compress.o"
+$RM $DIR/../lib/libzstd.a tmplog