139 lines
4.5 KiB
Makefile
139 lines
4.5 KiB
Makefile
# $NetBSD: subst.mk,v 1.54 2013/10/13 21:38:36 dholland Exp $
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#
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# This Makefile fragment implements a general text replacement facility.
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# Package makefiles define a ``class'', for each of which a particular
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# substitution description can be defined. For each class of files, a
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# target subst-<class> is created to perform the text replacement.
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#
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# Package-settable variables:
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#
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# SUBST_CLASSES
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# A list of class names. When adding new classes to this list, be
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# sure to append them (+=) instead of overriding them (=).
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#
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# SUBST_STAGE.<class>
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# "stage" at which we do the text replacement. Should be one of
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# {pre,do,post}-{extract,patch,configure,build,install}.
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#
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# SUBST_MESSAGE.<class>
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# The message to display before doing the substitution.
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#
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# SUBST_FILES.<class>
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# A list of file patterns on which to run the substitution;
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# the filenames are either absolute or relative to ${WRKSRC}.
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#
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# SUBST_SED.<class>
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# List of sed(1) arguments to run on the specified files.
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# Multiple commands can be specified using the -e option of sed.
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# Do not use non-standard sed options (e.g. -E).
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#
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# SUBST_VARS.<class>
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# List of variables that are substituted whenever they appear in
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# the form @VARNAME@. This is basically a short-cut for
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#
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# -e 's,@VARNAME@,${VARNAME},g'
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#
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# also taking care of (most) quoting issues. You can use both
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# SUBST_SED and SUBST_VARS in a single class.
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#
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# SUBST_FILTER_CMD.<class>
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# Filter used to perform the actual substitution on the specified
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# files. Defaults to ${SED} ${SUBST_SED.<class>}.
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#
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# SUBST_POSTCMD.<class>
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# Command to clean up after sed(1). Defaults to ${RM} -f
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# $$file${_SUBST_BACKUP_SUFFIX}. For debugging, set it to ${DO_NADA}.
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#
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# SUBST_SKIP_TEXT_CHECK.<class>
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# By default, each file is checked whether it really is a text file
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# before any substitutions are done to it. Since that test is not
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# perfect, it can be disabled by setting this variable to "yes".
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#
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# See also:
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# PLIST_SUBST
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#
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# Keywords: subst
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#
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_VARGROUPS+= subst
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_PKG_VARS.subst= SUBST_CLASSES
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.for c in ${SUBST_CLASSES}
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. for pv in SUBST_STAGE SUBST_MESSAGE SUBST_FILES SUBST_SED SUBST_VARS \
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SUBST_FILTER_CMD SUBST_POSTCMD SUBST_SKIP_TEXT_CHECK
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_PKG_VARS.subst+= ${pv}.${c}
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. endfor
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.endfor
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ECHO_SUBST_MSG?= ${STEP_MSG}
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# _SUBST_IS_TEXT_FILE returns 0 if $${file} is a text file.
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_SUBST_IS_TEXT_FILE?= \
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{ nchars=`${WC} -c < "$$file"`; \
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notnull=`LC_ALL=C ${TR} -d '\\0' < "$$file" | ${WC} -c`; \
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[ "$$nchars" = "$$notnull" ] || ${FALSE} ; \
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}
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_SUBST_BACKUP_SUFFIX= .subst.sav
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.for _class_ in ${SUBST_CLASSES}
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_SUBST_COOKIE.${_class_}= ${WRKDIR}/.subst_${_class_}_done
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SUBST_FILTER_CMD.${_class_}?= ${SED} ${SUBST_SED.${_class_}}
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SUBST_VARS.${_class_}?= # none
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SUBST_MESSAGE.${_class_}?= Substituting "${_class_}" in ${SUBST_FILES.${_class_}}
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. for v in ${SUBST_VARS.${_class_}}
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SUBST_FILTER_CMD.${_class_} += -e s,@${v}@,${${v}:S|\\|\\\\|gW:S|,|\\,|gW:S|&|\\\&|gW:Q},g
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. endfor
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SUBST_POSTCMD.${_class_}?= ${RM} -f "$$tmpfile"
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SUBST_SKIP_TEXT_CHECK.${_class_}?= no
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.if !empty(SUBST_SKIP_TEXT_CHECK.${_class_}:M[Yy][Ee][Ss])
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_SUBST_IS_TEXT_FILE.${_class_}= ${TRUE}
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.else
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_SUBST_IS_TEXT_FILE.${_class_}= ${_SUBST_IS_TEXT_FILE}
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.endif
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SUBST_TARGETS+= subst-${_class_}
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. if defined(SUBST_STAGE.${_class_})
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${SUBST_STAGE.${_class_}}: subst-${_class_}
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. else
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# SUBST_STAGE.* does not need to be defined.
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#PKG_FAIL_REASON+= "SUBST_STAGE missing for ${_class_}."
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. endif
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.PHONY: subst-${_class_}
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subst-${_class_}: ${_SUBST_COOKIE.${_class_}}
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${_SUBST_COOKIE.${_class_}}:
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. if !empty(SUBST_MESSAGE.${_class_})
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${RUN} ${ECHO_SUBST_MSG} ${SUBST_MESSAGE.${_class_}:Q}
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. endif
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${RUN} cd ${WRKSRC:Q}; \
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files=${SUBST_FILES.${_class_}:Q}; \
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for file in $$files; do \
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case $$file in /*) ;; *) file="./$$file";; esac; \
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tmpfile="$$file"${_SUBST_BACKUP_SUFFIX:Q}; \
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if [ ! -f "$$file" ]; then \
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${WARNING_MSG} "[subst.mk:${_class_}] Ignoring non-existent file \"$$file\"."; \
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elif ${_SUBST_IS_TEXT_FILE.${_class_}}; then \
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${MV} -f "$$file" "$$tmpfile" || exit 1; \
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${SUBST_FILTER_CMD.${_class_}} \
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< "$$tmpfile" \
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> "$$file"; \
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if ${TEST} -x "$$tmpfile"; then \
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${CHMOD} +x "$$file"; \
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fi; \
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if ${CMP} -s "$$tmpfile" "$$file"; then \
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${INFO_MSG} "[subst.mk:${_class_}] Nothing changed in $$file."; \
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${MV} -f "$$tmpfile" "$$file"; \
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else \
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${SUBST_POSTCMD.${_class_}}; \
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${ECHO} "$$file" >> ${.TARGET}; \
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fi; \
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else \
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${WARNING_MSG} "[subst.mk:${_class_}] Ignoring non-text file \"$$file\"."; \
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fi; \
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done
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${RUN} ${TOUCH} ${TOUCH_FLAGS} ${.TARGET:Q}
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.endfor
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