On 17-Aug-23 17:08, Haowei Hsu wrote:
Hello, Alexandru.
I have already installed LLVM on my Windows computer using the
LLVM-xxx-win64.exe
<https://github.com/llvm/llvm-project/releases/tag/llvmorg-16.0.6>
installer downloaded from LLVM's GitHub. From the installation
results, it does indeed
contain *libclang.dll* and *libclang.lib*.
image.png
I have also set the *LLVM_INSTALL_DIR* environment variable to its
top-level installation
directory *"C:\Program Files\LLVM"*. However, from the warning message
when running
configure.bat, it seems that libclang still cannot be found.
Hi,
Alexandru pointed out to
https://download.qt.io/development_releases/prebuilt/libclang/qt/ which
contains a static build of LLVM libraries,
but it also installs the CMake package files.
Qt is using CMake's find_package mechanism to find installed software.
Setting LLVM_INSTALL_DIR doesn't do much because the official LLVM
packages do not install the CMake package files under "c:\Program
Files\LLVM\lib\cmake".
This is why configure fails.
Supporting LLVM_INSTALL_DIR is giving the false impression that things
will work with any LLVM installation, having specified the LLVM
installation via CMAKE_PREFIX_PATH like one would do for Qt, would
suggest that CMake installation packages are needed.
I've opened up LLVM/Clang Windows installer doesn't provide CMake
package information · Issue #47222 · llvm/llvm-project (github.com)
<https://github.com/llvm/llvm-project/issues/47222> but it was closed as
WONTFIX.
I think we should put a DO NOT USE LLVM INSTALLER FROM Download LLVM
releases <https://releases.llvm.org/> on WINDOWS !!!
Cheers,
Cristian.
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