]> Dogcows Code - chaz/tar/commitdiff
Initial revision
authorPaul Eggert <eggert@cs.ucla.edu>
Mon, 13 Dec 1999 02:24:29 +0000 (02:24 +0000)
committerPaul Eggert <eggert@cs.ucla.edu>
Mon, 13 Dec 1999 02:24:29 +0000 (02:24 +0000)
m4/c-bs-a.m4 [new file with mode: 0644]

diff --git a/m4/c-bs-a.m4 b/m4/c-bs-a.m4
new file mode 100644 (file)
index 0000000..ceb26ae
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+#serial 1
+
+dnl From Paul Eggert.
+
+AC_DEFUN(AC_C_BACKSLASH_A,
+[
+  AC_CACHE_CHECK([whether backslash-a works in strings], ac_cv_c_backslash_a,
+   [AC_TRY_COMPILE([],
+     [
+      changequote(, ) dnl
+#if '\a' == 'a'
+      syntax error;
+#endif
+      char buf['\a' == 'a' ? -1 : 1];
+      buf[0] = '\a';
+      return buf[0] != "\a"[0];
+      changequote([, ])dnl
+     ],
+     ac_cv_c_backslash_a=yes,
+     ac_cv_c_backslash_a=no)])
+  if test $ac_cv_c_backslash_a = yes; then
+    AC_DEFINE(HAVE_C_BACKSLASH_A, 1,
+      [Define if backslash-a works in C strings.])
+  fi
+])
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