Details
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Bug
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Resolution: Done
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P3: Somewhat important
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6.0.0 Beta4
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None
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$ lsb_release -d
Description: openSUSE Leap 15.2
$ uname -a
Linux localhost.localdomain 5.3.18-lp152.47-default #1 SMP Thu Oct 15 16:05:25 UTC 2020 (41f7396) x86_64 x86_64 x86_64 GNU/Linux
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Linux/X11
Description
Found when building Qt from CI-approved commit 43291fd110 in the dev branch of qt5.git.
I do not have ccache installed in my environment. The old qmake-based configure correctly autodetects the lack of ccache and disables it, while the new cmake-based configure appears to erroneously enable ccache.
$ rpm -q ccache
package ccache is not installed
$ git clone git://code.qt.io/qt/qt5.git
...
$ cd qt5
$ git checkout v6.0.0-beta3
$ perl init-repository -f
...
$ ./configure -opensource -confirm-license
...
Build options:
...
Using ccache ........................... no
...
$ git checkout dev
$ git reflog
43291fd1 (HEAD -> dev, origin/dev, origin/HEAD) HEAD@{0}: clone: from git://code.qt.io/qt/qt5.git
$ perl init-repository -f
...
$ ./configure
...
Build options:
...
Using ccache ........................... yes
...
If I try to forcibly enable ccache for the old configure, it correctly refuses:
$ ./configure -opensource -confirm-license -ccache ... ERROR: Feature 'ccache' was enabled, but the pre-condition 'tests.ccache' failed.
If I pass }}{{-ccache to the new configure it does not complain, so perhaps configure's test for ccache is now broken.