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-rw-r--r--configure.ac20
1 files changed, 20 insertions, 0 deletions
diff --git a/configure.ac b/configure.ac
index ed7cc895d..ab516db37 100644
--- a/configure.ac
+++ b/configure.ac
@@ -182,6 +182,26 @@ AC_SUBST(NEEDS_LIBICONV)
AC_SUBST(NO_ICONV)
test -n "$NEEDS_LIBICONV" && LIBS="$LIBS -liconv"
#
+# Define NO_DEFLATE_BOUND if deflateBound is missing from zlib.
+AC_DEFUN([ZLIBTEST_SRC], [
+#include <zlib.h>
+
+int main(void)
+{
+ deflateBound(0, 0);
+ return 0;
+}
+])
+AC_MSG_CHECKING([for deflateBound in -lz])
+old_LIBS="$LIBS"
+LIBS="$LIBS -lz"
+AC_LINK_IFELSE(ZLIBTEST_SRC,
+ [AC_MSG_RESULT([yes])],
+ [AC_MSG_RESULT([no])
+ NO_DEFLATE_BOUND=yes])
+LIBS="$old_LIBS"
+AC_SUBST(NO_DEFLATE_BOUND)
+#
# Define NEEDS_SOCKET if linking with libc is not enough (SunOS,
# Patrick Mauritz).
AC_CHECK_LIB([c], [socket],