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README: Add notes regarding correct Qt CMAKE_PREFIX_PATH

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Users pass the value for Qt in `CMAKE_PREFIX_PATH` too deep like:
c:/Qt/6.2.4/msvc2019_64/lib/cmake/Qt6  and CMake can't find
all the components and weird errors are generated.

Task-number: QTCREATORBUG-28178
Change-Id: Icef7aef9e0933bd326ebd904623aac80c9f8e8c8
Reviewed-by: Eike Ziller <eike.ziller@qt.io>
Reviewed-by: Leena Miettinen <riitta-leena.miettinen@qt.io>
This commit is contained in:
Cristian Adam
2022-09-15 13:32:04 +02:00
parent e57b797342
commit 1323ad395a
1 changed files with 8 additions and 0 deletions
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@@ -66,6 +66,9 @@ Note that if you install Qt via the online installer, the path to Qt must
include the version number and compiler ABI. The path to the online installer
content is not enough.
Note that `/path/to/Qt` doesn't imply the full path depth like:
`$USER/Qt/6.2.4/gcc_64/lib/cmake/Qt6`, but only `$USER/Qt/6.2.4/gcc_64`.
See [instructions](#getting-llvmclang-for-the-clang-code-model) on how to
get LLVM.
@@ -85,6 +88,11 @@ Note that if you install Qt via the online installer, the path to Qt must
include the version number and compiler ABI. The path to the online installer
content is not enough.
Note that `\path\to\Qt` doesn't imply the full path depth like:
`c:\Qt\6.2.4\msvc2019_64\lib\cmake\Qt6`, but only `c:/Qt/6.2.4/msvc2019_64`.
The usage of slashes `/` is intentional, since CMake has issues with backslashes `\`
in `CMAKE_PREFX_PATH`, they are interpreted as escape codes.
See [instructions](#getting-llvmclang-for-the-clang-code-model) on how to
get LLVM.