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toolchain-funcs.eclass: document proper tc-check-openmp use

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Signed-off-by: David Seifert <soap@gentoo.org>
Closes: https://github.com/gentoo/gentoo/pull/25498
Signed-off-by: Sam James <sam@gentoo.org>
This commit is contained in:
David Seifert
2022-05-15 19:10:57 +02:00
committed by Sam James
parent 9bc832c6d3
commit 571dd66bed
1 changed files with 13 additions and 0 deletions
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13
eclass/toolchain-funcs.eclass
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@@ -611,6 +611,19 @@ tc-has-openmp() {
# OpenMP support that has been requested by the ebuild. Using this function
# to test for OpenMP support should be preferred over tc-has-openmp and
# printing a custom message, as it presents a uniform interface to the user.
#
# You should test for any necessary OpenMP support in pkg_pretend in order to
# warn the user of required toolchain changes. You must still check for OpenMP
# support at build-time, e.g.
# @CODE
# pkg_pretend() {
# [[ ${MERGE_TYPE} != binary ]] && use openmp && tc-check-openmp
# }
#
# pkg_setup() {
# [[ ${MERGE_TYPE} != binary ]] && use openmp && tc-check-openmp
# }
# @CODE
tc-check-openmp() {
if ! _tc-has-openmp; then
eerror "Your current compiler does not support OpenMP!"