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-rw-r--r--gnulib-m4/fdopen.m447
1 files changed, 47 insertions, 0 deletions
diff --git a/gnulib-m4/fdopen.m4 b/gnulib-m4/fdopen.m4
new file mode 100644
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+++ b/gnulib-m4/fdopen.m4
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+# fdopen.m4 serial 3
+dnl Copyright (C) 2011-2015 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.
+
+AC_DEFUN([gl_FUNC_FDOPEN],
+[
+ AC_REQUIRE([gl_STDIO_H_DEFAULTS])
+ AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
+ AC_REQUIRE([gl_MSVC_INVAL])
+ if test $HAVE_MSVC_INVALID_PARAMETER_HANDLER = 1; then
+ REPLACE_FDOPEN=1
+ else
+ dnl Test whether fdopen() sets errno when it fails due to a bad fd argument.
+ AC_CACHE_CHECK([whether fdopen sets errno], [gl_cv_func_fdopen_works],
+ [
+ AC_RUN_IFELSE(
+ [AC_LANG_SOURCE([[
+#include <stdio.h>
+#include <errno.h>
+int
+main (void)
+{
+ FILE *fp;
+ errno = 0;
+ fp = fdopen (-1, "r");
+ if (fp == NULL && errno == 0)
+ return 1;
+ return 0;
+}]])],
+ [gl_cv_func_fdopen_works=yes],
+ [gl_cv_func_fdopen_works=no],
+ [case "$host_os" in
+ mingw*) gl_cv_func_fdopen_works="guessing no" ;;
+ *) gl_cv_func_fdopen_works="guessing yes" ;;
+ esac
+ ])
+ ])
+ case "$gl_cv_func_fdopen_works" in
+ *no) REPLACE_FDOPEN=1 ;;
+ esac
+ fi
+])
+
+dnl Prerequisites of lib/fdopen.c.
+AC_DEFUN([gl_PREREQ_FDOPEN], [])