(sc_no_if_have_config_h): New rule.

(syntax-check-rules): Add it.

diff --git a/Makefile.maint b/Makefile.maint
index cb94c39..d67ce79 100644 (file)
--- a/Makefile.maint
+++ b/Makefile.maint
@@ -74,6 +74,7 @@ syntax-check-rules = \
   sc_dd_max_sym_length \
   sc_error_exit_success \
   sc_file_system \
+  sc_no_if_have_config_h \
   sc_obsolete_symbols \
   sc_prohibit_atoi_atof \
   sc_prohibit_jm_in_m4 \
@@ -148,6 +149,13 @@ sc_file_system:
            'rewrite to use "file system"' 1>&2;                        \
            exit 1; } || :
 
+sc_no_if_have_config_h:
+       @( $(CVS_LIST) ) > /dev/null 2>&1 || : &&                       \
+         grep '^# *if HAVE_CONFIG_H'                                   \
+            $$($(CVS_LIST) | grep -vEf .x-$@ ) &&                      \
+         { echo '$(ME): found use of #if HAVE_CONFIG_H; use #ifdef'    \
+               1>&2; exit 1; } || :
+
 sc_obsolete_symbols:
        @( $(CVS_LIST) ) > /dev/null 2>&1 || : &&                       \
          grep -E '\<(HAVE_FCNTL_H)\>'                                  \