qt5base-lts/mkspecs/features/qt_prefix_build_check.prf
Joerg Bornemann 99636127d1 Fix prefix_build check for top-level builds
The checks whether we have a Qt prefix build were broken for
top-level builds. Non-prefix top-level builds were incorrectly
detected as prefix builds.

For top-level non-prefix builds QT_HOST_DATA/QT_INSTALL_PREFIX becomes
something like "~/my/build/dir/qtbase" but .qmake.cache (and
.qmake.super) is/are created in "~/my/build/dir".

This patch extends the prefix_build check by probing for the existence
of .qmake.super, which only exists for top-level builds. Also, we add
qt_prefix_build_check.prf as central place for determining whether we
have a prefix build to make sure that qt_configure.prf and
qt_build_config.prf use the same logic.

Fixes: QTBUG-76185
Change-Id: I2b76fe26013496aaf2dac96ea711b06a69550a29
Reviewed-by: Oliver Wolff <oliver.wolff@qt.io>
2019-06-05 13:02:22 +02:00

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#
# W A R N I N G
# -------------
#
# This file is not part of the Qt API. It exists purely as an
# implementation detail. It may change from version to version
# without notice, or even be removed.
#
# We mean it.
#
defineTest(qtIsPrefixBuild) {
prefixdir = $$1
# qtbase non-prefix build?
exists($$prefixdir/.qmake.cache): \
return(false)
# top-level non-prefix build?
contains(prefixdir, .*/qtbase):exists($$dirname(prefixdir)/.qmake.super): \
return(false)
return(true)
}