Added an additional check for zstd.h in configure.ac
@@ -718,10 +718,24 @@ AC_CHECK_LIB([zstd],[ZSTD_compress],[have_zstd=yes],[have_zstd=no])
if test "x$have_zstd" = "xyes" ; then
AC_SEARCH_LIBS([ZSTD_compress],[zstd zstd.dll cygzstd.dll], [], [])
AC_DEFINE([HAVE_ZSTD], [1], [if true, zstd library is available])
+
fi
AC_MSG_CHECKING([whether libzstd library is available])
AC_MSG_RESULT([${have_zstd}])
+##
+# Ensure that the zstd.h dev files are also available.
+##
+if test "x$have_zstd" = "xyes" ; then
+ AC_CHECK_HEADERS([zstd.h], [], [nc_zstd_h_missing=yes])
+ if test "x$nc_zstd_h_missing" = xyes; then
+ AC_MSG_WARN([zstd library detected, but zstd.h development file not found. Ensure that the zstd development files are installed in order to build zstd support.])
+ AC_DEFINE([HAVE_ZSTD], [0], [if true, zstd library is available])
+ have_zstd=no
+ fi
+fi
+
+
# See if we have libbz2
AC_CHECK_LIB([bz2],[BZ2_bzCompress],[have_bz2=yes],[have_bz2=no])
if test "x$have_bz2" = "xyes" ; then
