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-rw-r--r--maint.mk53
1 files changed, 32 insertions, 21 deletions
diff --git a/maint.mk b/maint.mk
index 83b7e1f20..5a899656b 100644
--- a/maint.mk
+++ b/maint.mk
@@ -92,6 +92,17 @@ syntax-check: $(local-check)
# exit 1; } || :
# FIXME: don't allow `#include .strings\.h' anywhere
+# There are many rules below that prohibit constructs in this package.
+# If the offending construct can be matched with a grep-E-style regexp,
+# use this macro. The shell variables "re" and "msg" must be defined.
+define _prohibit_regexp
+ dummy=; : so we do not need a semicolon before each use \
+ test "x$$re" != x || { echo '$(ME): re not defined' 1>&2; exit 1; }; \
+ test "x$$msg" != x || { echo '$(ME): msg not defined' 1>&2; exit 1; };\
+ grep -nE "$$re" $$($(VC_LIST_EXCEPT)) && \
+ { echo '$(ME): '"$$msg" 1>&2; exit 1; } || :
+endef
+
sc_avoid_if_before_free:
@$(srcdir)/build-aux/useless-if-before-free \
$(useless_free_options) \
@@ -100,32 +111,29 @@ sc_avoid_if_before_free:
exit 1; } || :
sc_cast_of_argument_to_free:
- @grep -nE '\<free *\( *\(' $$($(VC_LIST_EXCEPT)) && \
- { echo '$(ME): don'\''t cast free argument' 1>&2; \
- exit 1; } || :
+ @re='\<free *\( *\(' msg='don'\''t cast free argument' \
+ $(_prohibit_regexp)
sc_cast_of_x_alloc_return_value:
- @grep -nE '\*\) *x(m|c|re)alloc\>' $$($(VC_LIST_EXCEPT)) && \
- { echo '$(ME): don'\''t cast x*alloc return value' 1>&2; \
- exit 1; } || :
+ @re='\*\) *x(m|c|re)alloc\>' \
+ msg='don'\''t cast x*alloc return value' \
+ $(_prohibit_regexp)
sc_cast_of_alloca_return_value:
- @grep -nE '\*\) *alloca\>' $$($(VC_LIST_EXCEPT)) && \
- { echo '$(ME): don'\''t cast alloca return value' 1>&2; \
- exit 1; } || :
+ @re='\*\) *alloca\>' msg='don'\''t cast alloca return value' \
+ $(_prohibit_regexp)
sc_space_tab:
- @grep -n '[ ] ' $$($(VC_LIST_EXCEPT)) && \
- { echo '$(ME): found SPACE-TAB sequence; remove the SPACE' \
- 1>&2; exit 1; } || :
+ @re='[ ] ' msg='found SPACE-TAB sequence; remove the SPACE' \
+ $(_prohibit_regexp)
# Don't use *scanf or the old ato* functions in `real' code.
# They provide no error checking mechanism.
# Instead, use strto* functions.
sc_prohibit_atoi_atof:
- @grep -nE '\<([fs]?scanf|ato([filq]|ll))\>' $$($(VC_LIST_EXCEPT)) && \
- { echo '$(ME): do not use *scan''f, ato''f, ato''i, ato''l, ato''ll, ato''q, or ss''canf' \
- 1>&2; exit 1; } || :
+ @re='\<([fs]?scanf|ato([filq]|ll))\>' \
+ msg='do not use *scan''f, ato''f, ato''i, ato''l, ato''ll or ato''q' \
+ $(_prohibit_regexp)
# Use STREQ rather than comparing strcmp == 0, or != 0.
sc_prohibit_strcmp:
@@ -204,6 +212,10 @@ sc_require_config_h_first:
else :; \
fi
+sc_prohibit_HAVE_MBRTOWC:
+ @re='\bHAVE_MBRTOWC\b' msg="do not use $$re; it is always defined" \
+ $(_prohibit_regexp)
+
# To use this "command" macro, you must first define two shell variables:
# h: the header, enclosed in <> or ""
# re: a regular expression that matches IFF something provided by $h is used.
@@ -353,16 +365,15 @@ sc_GPL_version:
# This is a bit of a kludge, since it prevents use of the string
# even in comments, but for now it does the job with no false positives.
sc_prohibit_stat_st_blocks:
- @grep -nE '[.>]st_blocks' $$($(VC_LIST_EXCEPT)) && \
- { echo '$(ME): do not use st_blocks; use ST_NBLOCKS' \
- 1>&2; exit 1; } || :
+ @re='[.>]st_blocks' msg='do not use st_blocks; use ST_NBLOCKS' \
+ $(_prohibit_regexp)
# Make sure we don't define any S_IS* macros in src/*.c files.
# They're already defined via gnulib's sys/stat.h replacement.
sc_prohibit_S_IS_definition:
- @grep -nE '^ *# *define *S_IS' $$($(VC_LIST_EXCEPT)) && \
- { echo '$(ME): do not define S_IS* macros; include <sys/stat.h>' \
- 1>&2; exit 1; } || :
+ @re='^ *# *define *S_IS' \
+ msg='do not define S_IS* macros; include <sys/stat.h>' \
+ $(_prohibit_regexp)
# Each program that uses proper_name_utf8 must link with
# one of the ICONV libraries.