Properly skip erlang tests when erl/erlc are not available.

Fallout from the previous change, which I should’ve tested on a
machine without Erlang tools installed, before pushing.

It bugs me a little that we have to put these special exit codes into
autoconf itself instead of the testsuite, but it is what it is.

 * lib/autoconf/erlang.m4 (AC_ERLANG_NEED_ERLC, AC_ERLANG_NEED_ERL):
 Exit with code 77 on failure so testsuite understands to skip Erlang
 tests in this case.
 (AC_ERLANG_CHECK_LIB): Use AC_ERLANG_NEED_ERLC and AC_ERLANG_NEED_ERL
 instead of the _PATH_ versions.

diff --git a/lib/autoconf/erlang.m4 b/lib/autoconf/erlang.m4
index 607ee40814221ddbad2fb19cc1433502db99ee6e..ad423b16a6d6b1021a25aa7df2566bba19bfc199 100644 (file)
--- a/lib/autoconf/erlang.m4
+++ b/lib/autoconf/erlang.m4
@@ -63,7 +63,7 @@ AC_ARG_VAR([ERLCFLAGS], [Erlang/OTP compiler flags [none]])dnl
 AC_DEFUN([AC_ERLANG_NEED_ERLC],
 [AC_ERLANG_PATH_ERLC([not found], [$1])
 if test "$ERLC" = "not found"; then
-    AC_MSG_ERROR([Erlang/OTP compiler (erlc) not found but required])
+    AC_MSG_ERROR([Erlang/OTP compiler (erlc) not found but required], 77)
 fi
 ])
 
@@ -86,7 +86,7 @@ fi
 AC_DEFUN([AC_ERLANG_NEED_ERL],
 [AC_ERLANG_PATH_ERL([not found], [$1])
 if test "$ERL" = "not found"; then
-    AC_MSG_ERROR([Erlang/OTP interpreter (erl) not found but required])
+    AC_MSG_ERROR([Erlang/OTP interpreter (erl) not found but required], 77)
 fi
 ])
 
@@ -173,8 +173,8 @@ AC_DEFUN([AC_LANG_COMPILER(Erlang)],
 # Macro for checking if an Erlang library is installed, and to
 # determine its version.
 AC_DEFUN([AC_ERLANG_CHECK_LIB],
-[AC_REQUIRE([AC_ERLANG_PATH_ERLC])[]dnl
-AC_REQUIRE([AC_ERLANG_PATH_ERL])[]dnl
+[AC_REQUIRE([AC_ERLANG_NEED_ERLC])[]dnl
+AC_REQUIRE([AC_ERLANG_NEED_ERL])[]dnl
 AC_CACHE_CHECK([for Erlang/OTP '$1' library subdirectory],
     [ac_cv_erlang_lib_dir_$1],
     [AC_LANG_PUSH(Erlang)[]dnl