git-version-gen: use "git update-index..." rather than "git status"

[gnulib.git] / top / maint.mk

diff --git a/top/maint.mk b/top/maint.mk
index 3038680..381ef08 100644 (file)
--- a/top/maint.mk
+++ b/top/maint.mk
@@ -372,7 +372,7 @@ sc_require_config_h_first:
 
 sc_prohibit_HAVE_MBRTOWC:
        @prohibit='\bHAVE_MBRTOWC\b'                                    \
-       halt="do not use $$re; it is always defined"                    \
+       halt="do not use $$prohibit; it is always defined"              \
          $(_sc_search_regexp)
 
 # To use this "command" macro, you must first define two shell variables:
@@ -849,6 +849,26 @@ sc_copyright_check:
        halt='out of date copyright in $(texi); update it'              \
          $(_sc_search_regexp)
 
+# If tests/help-version exists and seems to be new enough, assume that its
+# use of init.sh and path_prepend_ is correct, and ensure that every other
+# use of init.sh is identical.
+# This is useful because help-version cross-checks prog --version
+# with $(VERSION), which verifies that its path_prepend_ invocation
+# sets PATH correctly.  This is an inexpensive way to ensure that
+# the other init.sh-using tests also get it right.
+_hv_file ?= $(srcdir)/tests/help-version
+_hv_regex ?= ^ *\. [^ ]*/init\.sh
+sc_cross_check_PATH_usage_in_tests:
+       @if grep -l 'VERSION mismatch' $(_hv_file) >/dev/null           \
+           && grep -lE '$(_hv_regex)' $(_hv_file) >/dev/null; then     \
+         good=$$(grep -E '$(_hv_regex)' < $(_hv_file));                \
+         grep -LFx "$$good"                                            \
+               $$(grep -lE '$(_hv_regex)' $$($(VC_LIST_EXCEPT)))       \
+             | grep . &&                                               \
+           { echo "$(ME): the above files use path_prepend_ inconsistently" \
+               1>&2; exit 1; } || :;                                   \
+       fi
+
 # #if HAVE_... will evaluate to false for any non numeric string.
 # That would be flagged by using -Wundef, however gnulib currently
 # tests many undefined macros, and so we can't enable that option.