There are places in Qt's source where headers included with the name of
the module subdirectory (e.g. #include <QtCore/QHash>). Therefore, the
build system passes the top header directory to the compiler; but this
results in a error when building host tools since sysroot/usr/include
directory includes architecture specific system headers.
In order to prevent this, install all Qt headers into a subdirectory in
/usr/include.
Fixes: http://autobuild.buildroot.net/results/4f1/4f16c0b38bdd6e40efcc781c12fae81c0bfabb72/
Signed-off-by: Fatih Aşıcı <fatih.asici@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
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