1 # Copyright 1999-2019 Gentoo Authors
2 # Distributed under the terms of the GNU General Public License v2
4 # @ECLASS: eutils.eclass
6 # base-system@gentoo.org
7 # @BLURB: many extra (but common) functions that are used in ebuilds
9 # The eutils eclass contains a suite of functions that complement
10 # the ones that ebuild.sh already contain. The idea is that the functions
11 # are not required in all ebuilds but enough utilize them to have a common
12 # home rather than having multiple ebuilds implementing the same thing.
14 # Due to the nature of this eclass, some functions may have maintainers
15 # different from the overall eclass!
17 if [[ -z ${_EUTILS_ECLASS} ]]; then
20 # implicitly inherited (now split) eclasses
23 inherit desktop epatch estack ltprune multilib preserve-libs \
24 toolchain-funcs vcs-clean
31 # Cheap replacement for when debianutils (and thus mktemp)
32 # does not exist on the users system.
35 [[ $1 == -d ]] && exe="mkdir" && shift
38 if [[ -z ${topdir} ]] ; then
44 if ! type -P mktemp > /dev/null ; then
45 # system lacks `mktemp` so we have to fake it
47 while [[ -e ${tmp} ]] ; do
48 tmp=${topdir}/tmp.${RANDOM}.${RANDOM}.${RANDOM}
50 ${exe} "${tmp}" || ${exe} -p "${tmp}"
53 # the args here will give slightly wierd names on BSD,
54 # but should produce a usable file on all userlands
55 if [[ ${exe} == "touch" ]] ; then
56 TMPDIR="${topdir}" mktemp -t tmp.XXXXXXXXXX
58 TMPDIR="${topdir}" mktemp -dt tmp.XXXXXXXXXX
63 # @FUNCTION: edos2unix
64 # @USAGE: <file> [more files ...]
66 # A handy replacement for dos2unix, recode, fixdos, etc... This allows you
67 # to remove all of these text utilities from DEPEND variables because this
68 # is a script based solution. Just give it a list of files to convert and
69 # they will all be changed from the DOS CRLF format to the UNIX LF format.
71 [[ $# -eq 0 ]] && return 0
72 sed -i 's/\r$//' -- "$@" || die
75 # @FUNCTION: strip-linguas
76 # @USAGE: [<allow LINGUAS>|<-i|-u> <directories of .po files>]
78 # Make sure that LINGUAS only contains languages that
79 # a package can support. The first form allows you to
80 # specify a list of LINGUAS. The -i builds a list of po
81 # files found in all the directories and uses the
82 # intersection of the lists. The -u builds a list of po
83 # files found in all the directories and uses the union
87 if [[ $1 == "-i" ]] || [[ $1 == "-u" ]] ; then
89 ls=$(find "$1" -name '*.po' -exec basename {} .po ';'); shift
92 if [[ ${op} == "-u" ]] ; then
97 for f in $(find "$d" -name '*.po' -exec basename {} .po ';') ; do
98 if [[ ${op} == "-i" ]] ; then
99 has ${f} ${ls} && newls="${newls} ${f}"
101 has ${f} ${ls} || newls="${newls} ${f}"
112 for f in ${LINGUAS} ; do
113 if has ${f} ${ls} ; then
114 newls="${newls} ${f}"
120 && einfo "Sorry, but ${PN} does not support the LINGUAS:" ${nols}
121 export LINGUAS=${newls:1}
124 # @FUNCTION: make_wrapper
125 # @USAGE: <wrapper> <target> [chdir] [libpaths] [installpath]
127 # Create a shell wrapper script named wrapper in installpath
128 # (defaults to the bindir) to execute target (default of wrapper) by
129 # first optionally setting LD_LIBRARY_PATH to the colon-delimited
130 # libpaths followed by optionally changing directory to chdir.
132 local wrapper=$1 bin=$2 chdir=$3 libdir=$4 path=$5
133 local tmpwrapper=$(emktemp)
134 has "${EAPI:-0}" 0 1 2 && local EPREFIX=""
138 if [[ -n ${libdir} ]] ; then
140 if [[ ${CHOST} == *-darwin* ]] ; then
141 var=DYLD_LIBRARY_PATH
146 if [ "\${${var}+set}" = "set" ] ; then
147 export ${var}="\${${var}}:${EPREFIX}${libdir}"
149 export ${var}="${EPREFIX}${libdir}"
153 [[ -n ${chdir} ]] && printf 'cd "%s" &&\n' "${EPREFIX}${chdir}"
154 # We don't want to quote ${bin} so that people can pass complex
155 # things as ${bin} ... "./someprog --args"
156 printf 'exec %s "$@"\n' "${bin/#\//${EPREFIX}/}"
158 chmod go+rx "${tmpwrapper}"
160 if [[ -n ${path} ]] ; then
164 newexe "${tmpwrapper}" "${wrapper}"
167 newbin "${tmpwrapper}" "${wrapper}" || die
172 eerror "path_exists has been removed. Please see the following post"
173 eerror "for a replacement snippet:"
174 eerror "https://blogs.gentoo.org/mgorny/2018/08/09/inlining-path_exists/"
175 die "path_exists is banned"
178 # @FUNCTION: use_if_iuse
181 # Return true if the given flag is in USE and IUSE.
183 # Note that this function should not be used in the global scope.
185 in_iuse $1 || return 1
189 # @FUNCTION: optfeature
190 # @USAGE: <short description> <package atom to match> [other atoms]
192 # Print out a message suggesting an optional package (or packages)
193 # not currently installed which provides the described functionality.
195 # The following snippet would suggest app-misc/foo for optional foo support,
196 # app-misc/bar or app-misc/baz[bar] for optional bar support
197 # and either both app-misc/a and app-misc/b or app-misc/c for alphabet support.
199 # optfeature "foo support" app-misc/foo
200 # optfeature "bar support" app-misc/bar app-misc/baz[bar]
201 # optfeature "alphabet support" "app-misc/a app-misc/b" app-misc/c
204 debug-print-function ${FUNCNAME} "$@"
211 if has_version "${j}"; then
218 if [[ ${flag} -eq 1 ]]; then
222 if [[ ${flag} -eq 0 ]]; then
228 msg="${msg:0: -4} for ${desc}"
238 # @USAGE: <USE flag> [true output] [false output] [true suffix] [false suffix]
240 # Proxy to declare usex for package managers or EAPIs that do not provide it
241 # and use the package manager implementation when available (i.e. EAPI >= 5).
242 # If USE flag is set, echo [true output][true suffix] (defaults to "yes"),
243 # otherwise echo [false output][false suffix] (defaults to "no").
244 usex() { use "$1" && echo "${2-yes}$4" || echo "${3-no}$5" ; } #382963
252 # @FUNCTION: einstalldocs
254 # Install documentation using DOCS and HTML_DOCS, in EAPIs that do not
255 # provide this function. When available (i.e., in EAPI 6 or later),
256 # the package manager implementation should be used instead.
258 # If DOCS is declared and non-empty, all files listed in it are
259 # installed. The files must exist, otherwise the function will fail.
260 # In EAPI 4 and 5, DOCS may specify directories as well; in earlier
261 # EAPIs using directories is unsupported.
263 # If DOCS is not declared, the files matching patterns given
264 # in the default EAPI implementation of src_install will be installed.
265 # If this is undesired, DOCS can be set to empty value to prevent any
266 # documentation from being installed.
268 # If HTML_DOCS is declared and non-empty, all files and/or directories
269 # listed in it are installed as HTML docs (using dohtml).
271 # Both DOCS and HTML_DOCS can either be an array or a whitespace-
272 # separated list. Whenever directories are allowed, '<directory>/.' may
273 # be specified in order to install all files within the directory
274 # without creating a sub-directory in docdir.
276 # Passing additional options to dodoc and dohtml is not supported.
277 # If you needed such a thing, you need to call those helpers explicitly.
279 debug-print-function ${FUNCNAME} "${@}"
282 has ${EAPI} 0 1 2 3 && dodoc_opts=
284 if ! declare -p DOCS &>/dev/null ; then
286 for d in README* ChangeLog AUTHORS NEWS TODO CHANGES \
287 THANKS BUGS FAQ CREDITS CHANGELOG ; do
288 if [[ -s ${d} ]] ; then
292 elif [[ $(declare -p DOCS) == "declare -a"* ]] ; then
293 if [[ ${DOCS[@]} ]] ; then
294 dodoc ${dodoc_opts} "${DOCS[@]}" || die
297 if [[ ${DOCS} ]] ; then
298 dodoc ${dodoc_opts} ${DOCS} || die
302 if [[ $(declare -p HTML_DOCS 2>/dev/null) == "declare -a"* ]] ; then
303 if [[ ${HTML_DOCS[@]} ]] ; then
304 dohtml -r "${HTML_DOCS[@]}" || die
307 if [[ ${HTML_DOCS} ]] ; then
308 dohtml -r ${HTML_DOCS} || die
318 # Determines whether the given flag is in IUSE. Strips IUSE default
319 # prefixes as necessary. In EAPIs where it is available (i.e., EAPI 6
320 # or later), the package manager implementation should be used instead.
322 # Note that this function must not be used in the global scope.
324 debug-print-function ${FUNCNAME} "${@}"
325 [[ ${#} -eq 1 ]] || die "Invalid args to ${FUNCNAME}()"
328 local liuse=( ${IUSE} )
330 has "${flag}" "${liuse[@]#[+-]}"
342 # Proxy to ewarn for package managers that don't provide eqawarn and use the PM
343 # implementation if available. Reuses PORTAGE_ELOG_CLASSES as set by the dev
345 if ! declare -F eqawarn >/dev/null ; then
347 has qa ${PORTAGE_ELOG_CLASSES} && ewarn "$@"