.

diff --git a/m4/fstypename.m4 b/m4/fstypename.m4
new file mode 100644 (file)
index 0000000..b0166c1
--- /dev/null
+++ b/m4/fstypename.m4
@@ -0,0 +1,41 @@
+#serial 1
+
+dnl From Jim Meyering.
+dnl
+dnl See if struct statfs has the f_fstypename member.
+dnl If so, define HAVE_F_FSTYPENAME_IN_STATFS.
+dnl
+
+AC_DEFUN(jm_FSTYPENAME,
+  [
+    AC_CACHE_CHECK([for f_fstypename in struct statfs],
+                  fu_cv_sys_f_fstypename_in_statfs,
+      [
+       AC_TRY_COMPILE(
+         [
+#include <sys/types.h>
+#include <sys/mount.h>
+         ],
+         [struct statfs s; int i = sizeof s.f_fstypename;],
+         fu_cv_sys_f_fstypename_in_statfs=yes,
+         fu_cv_sys_f_fstypename_in_statfs=no
+       )
+      ]
+    )
+
+    if test $fu_cv_sys_f_fstypename_in_statfs = yes; then
+      if test x = y; then
+       # This code is deliberately never run via ./configure.
+       # FIXME: this is a hack to make autoheader put the corresponding
+       # HAVE_* undef for this symbol in config.h.in.  This saves me the
+       # trouble of having to maintain the #undef in acconfig.h manually.
+       AC_CHECK_FUNCS(F_FSTYPENAME_IN_STATFS)
+      fi
+      # Defining it this way (rather than via AC_DEFINE) short-circuits the
+      # autoheader check -- autoheader doesn't know it's already been taken
+      # care of by the hack above.
+      ac_kludge=HAVE_F_FSTYPENAME_IN_STATFS
+      AC_DEFINE_UNQUOTED($ac_kludge)
+    fi
+  ]
+)