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-rw-r--r--maint.mk15
1 files changed, 15 insertions, 0 deletions
diff --git a/maint.mk b/maint.mk
index cb3c6a56d..7a9649e10 100644
--- a/maint.mk
+++ b/maint.mk
@@ -191,6 +191,21 @@ sc_require_config_h:
else :; \
fi
+# You must include <config.h> before including any other header file.
+sc_require_config_h_first:
+ @if $(VC_LIST_EXCEPT) | grep '\.c$$' > /dev/null; then \
+ fail=0; \
+ for i in $$($(VC_LIST_EXCEPT) | grep '\.c$$'); do \
+ grep '^# *include\>' $$i | sed 1q \
+ | grep '^# *include <config\.h>' > /dev/null \
+ || { echo $$i; fail=1; }; \
+ done; \
+ test $$fail = 1 && \
+ { echo '$(ME): the above files include some other header' \
+ 'before <config.h>' 1>&2; exit 1; } || :; \
+ else :; \
+ fi
+
# To use this "command" macro, you must first define two shell variables:
# h: the header, enclosed in <> or ""
# re: a regular expression that matches IFF something provided by $h is used.