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-rw-r--r--m4/byteswap.m419
1 files changed, 19 insertions, 0 deletions
diff --git a/m4/byteswap.m4 b/m4/byteswap.m4
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+# byteswap.m4 serial 4
+dnl Copyright (C) 2005, 2007, 2009-2020 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+dnl Written by Oskar Liljeblad.
+
+AC_DEFUN([gl_BYTESWAP],
+[
+ dnl Prerequisites of lib/byteswap.in.h.
+ AC_CHECK_HEADERS([byteswap.h], [
+ BYTESWAP_H=''
+ ], [
+ BYTESWAP_H='byteswap.h'
+ ])
+ AC_SUBST([BYTESWAP_H])
+ AM_CONDITIONAL([GL_GENERATE_BYTESWAP_H], [test -n "$BYTESWAP_H"])
+])