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# $NetBSD: replace-interpreter.mk,v 1.23 2021/11/09 17:39:42 gutteridge Exp $
# This file provides common templates for replacing #! interpreters
# in script files.
#
# The following variables may be set by a package:
#
# REPLACE_AWK
# REPLACE_BASH
# REPLACE_CSH
# REPLACE_KSH
# REPLACE_PERL
# REPLACE_PERL6
# REPLACE_R
# REPLACE_SH
# Lists of filename patterns relative to WRKSRC in which the #!
# interpreter should be replaced by the pkgsrc one. Any directories
# that appear in the lists are silenty skipped, assuming that
# they result from shell globbing expressions.
#
# Use REPLACE_SH for shell programs that don't need any
# special features from bash, and REPLACE_BASH for the
# others.
#
# Note that in all the above cases, you have to add the needed
# tools manually to USE_TOOLS, since there is no way to detect
# automatically whether a tool should be a build-time or a
# run-time dependency.
#
# Packages may also add their own interpreter replacements, which should
# just look like the examples below. For the REPLACE_INTERPRETER
# variable, all identifiers starting with "sys-" are reserved for the
# pkgsrc infrastructure. All others may be used freely.
#
# Keywords: replace_interpreter interpreter interp hashbang #! shebang
# Keywords: awk bash csh ksh perl R sh
######################################################################
### replace-interpreter (PRIVATE)
######################################################################
### replace-interpreter replaces paths to interpreters in scripts with
### the paths to the pkgsrc-managed interpreters.
###
do-configure-pre-hook: replace-interpreter
REPLACE_INTERPRETER?= # none
REPLACE_AWK?= # none
REPLACE_BASH?= # none
REPLACE_CSH?= # none
REPLACE_KSH?= # none
REPLACE_PERL?= # none
REPLACE_R?= # none
REPLACE_SH?= # none
.if !empty(REPLACE_AWK:M*)
REPLACE_INTERPRETER+= sys-AWK
REPLACE.sys-AWK.old= .*awk
REPLACE.sys-AWK.new= ${AWK}
REPLACE_FILES.sys-AWK= ${REPLACE_AWK}
.endif
.if !empty(REPLACE_BASH:M*)
REPLACE_INTERPRETER+= sys-bash
REPLACE.sys-bash.old= .*sh
REPLACE.sys-bash.new= ${BASH}
REPLACE_FILES.sys-bash= ${REPLACE_BASH}
.endif
.if !empty(REPLACE_CSH:M*)
REPLACE_INTERPRETER+= sys-csh
REPLACE.sys-csh.old= .*csh
REPLACE.sys-csh.new= ${CSH}
REPLACE_FILES.sys-csh= ${REPLACE_CSH}
.endif
.if !empty(REPLACE_KSH:M*)
REPLACE_INTERPRETER+= sys-ksh
REPLACE.sys-ksh.old= [^[:space:]]*sh
REPLACE.sys-ksh.new= ${TOOLS_PATH.ksh}
REPLACE_FILES.sys-ksh= ${REPLACE_KSH}
.endif
.if !empty(REPLACE_PERL:M*)
REPLACE_INTERPRETER+= sys-Perl
REPLACE.sys-Perl.old= .*perl[^[:space:]]*
REPLACE.sys-Perl.new= ${PERL5}
REPLACE_FILES.sys-Perl= ${REPLACE_PERL}
.endif
.if !empty(REPLACE_PERL6:M*)
PERL6?= ${PREFIX}/bin/perl6
REPLACE_INTERPRETER+= sys-Perl6
REPLACE.sys-Perl6.old= .*perl6[^[:space:]]*
REPLACE.sys-Perl6.new= ${PERL6}
REPLACE_FILES.sys-Perl6=${REPLACE_PERL6}
.endif
.if !empty(REPLACE_R:M*)
REPLACE_INTERPRETER+= sys-R
REPLACE.sys-R.old= [^[:space:]]*R
REPLACE.sys-R.new= ${PREFIX}/bin/R
REPLACE_FILES.sys-R= ${REPLACE_R}
.endif
.if !empty(REPLACE_SH:M*)
REPLACE_INTERPRETER+= sys-sh
REPLACE.sys-sh.old= [^[:space:]]*sh
REPLACE.sys-sh.new= ${SH}
REPLACE_FILES.sys-sh= ${REPLACE_SH}
.endif
# sed regexp to match optional "/usr/bin/env" followed by one or more spaces
REPLACE.optional-env-space= \(/usr/bin/env[[:space:]][[:space:]]*\)\{0,1\}
.PHONY: replace-interpreter
replace-interpreter:
.for _lang_ in ${REPLACE_INTERPRETER}
. if defined(REPLACE_FILES.${_lang_}) && !empty(REPLACE_FILES.${_lang_}:M*)
@${STEP_MSG} "Replacing ${_lang_:S/^sys-//} interpreter in "${REPLACE_FILES.${_lang_}:M*:Q}"."
${RUN} set -u; \
cd ${WRKSRC}; \
for f in ${REPLACE_FILES.${_lang_}}; do \
if [ -f "$$f" ]; then \
${SED} -e '1s|^#![[:space:]]*${REPLACE.optional-env-space}${REPLACE.${_lang_}.old}|#!${REPLACE.${_lang_}.new}|' \
< "$${f}" > "$${f}.new"; \
if [ -x "$${f}" ]; then \
${CHMOD} a+x "$${f}.new"; \
fi; \
if ${CMP} -s "$${f}.new" "$${f}"; then \
${INFO_MSG} "[replace-interpreter] Nothing changed in $${f}."; \
${RM} -f "$${f}.new"; \
else \
${MV} -f "$${f}.new" "$${f}"; \
fi; \
elif [ -d "$$f" ] || [ -h "$$f" ]; then \
: 'Ignore it, most probably comes from shell globs'; \
else \
${WARNING_MSG} "[replace-interpreter] Skipping non-existent file \"$$f\"."; \
fi; \
done
. else
@${WARNING_MSG} "[replace-interpreter] Empty list of files for ${_lang_}."
. endif
.endfor
_VARGROUPS+= interp
_PKG_VARS.interp= REPLACE_AWK REPLACE_BASH REPLACE_CSH REPLACE_KSH
_PKG_VARS.interp+= REPLACE_PERL REPLACE_PERL6 REPLACE_R REPLACE_SH
_PKG_VARS.interp+= REPLACE_INTERPRETER
.for interp in ${REPLACE_INTERPRETER}
_DEF_VARS.interp+= REPLACE.${interp}.old REPLACE.${interp}.new REPLACE_FILES.${interp}
.endfor
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