Details
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Bug
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Resolution: Fixed
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P2: Important
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6.5.1
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None
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14568476f (dev), 64279b0b0 (6.6)
Description
We are currently building QtWebEngine v6.5.1 with yocto and it fails at cmake configure with cmake version 3.16.3:
CMake Error at cmake/Functions.cmake:461 (file): file Unknown argument to GENERATE subcommand. Call Stack (most recent call first): cmake/Functions.cmake:1165 (add_linker_options) src/core/CMakeLists.txt:549 (add_gn_build_aritfacts_to_target)
If you look in cmake/Functions.cmake at line 461, you will see the file() command:
file(GENERATE OUTPUT ${lflags_filter_script}
CONTENT "file(STRINGS ${lflags_rsp} lflags)
string(REGEX MATCHALL \"-L.*\" lflags_filtered \${lflags})
file(WRITE ${lflags_filtered_rsp} \${lflags_filtered})"
FILE_PERMISSIONS OWNER_EXECUTE OWNER_WRITE OWNER_READ
)
The CMakeLists.txt states the minimal version required is 3.16:
cmake_minimum_required(VERSION 3.16)
Looking at the cmake documentation, you can see that the FILE_PERMISSIONS argument for the GENERATE file command is only valid in version 3.20 or later:
https://cmake.org/cmake/help/v3.20/command/file.html#writing
This causes the above cmake error. Possible solutions:
- Execute chmod for the file to change the file permissions with add_custom_command()
- Set cmake_minimum_required to 3.20
- Set cmake_minimum_required to 3.19 and use file(CHMOD ...)
- Remove FILE_PERMISSIONS argument (works for me, everything compiles just fine without it)
Just a note: On line 1284, there is an explicit check for the cmake version >3.21, before it uses file GENERATE command with FILE_PERMISSIONS argument.