The note about CMAKE_IOS_INSTALL_COMBINED is related to value of
CMAKE_OSX_SYSROOT. `${EFFECTIVE_PLATFORM_NAME}` as far as I understand
used on build step too, it's not only installation
(`cmTarget::ComputeOutputDir`). As alternative you can try to hardcode
`LIBRARY_OUTPUT_DIRECTORY` so both simulator and device will have same
predictable location. I don't know about CMake internals in such depth
to answer question about generator expression.
Ruslo
On 29-Mar-16 22:51, Vladimír Vondruš wrote:
Hm... this is unfortunate. Would it be possible to keep the
${EFFECTIVE_PLATFORM_NAME} in place for the install step but return it
substituted when one asks explicitly using generator expression? From what I
understood in the docs, the CMAKE_IOS_INSTALL_COMBINED is doing something
additional during installation step and does not affect generator step -- so I
think a behavior specific for installation and CMAKE_IOS_INSTALL_COMBINED could
be separated from direct use of generator expressions. Or am I completely out
of touch?
Thank you
mosra
______________________________________________________________
Od: Ruslan Baratov <ruslan_bara...@yahoo.com>
Komu: "Vladimír Vondruš" <mo...@centrum.cz>
Datum: 29.03.2016 15:20
Předmět: Re: [CMake] EFFECTIVE_PLATFORM_NAME not expanded in TARGET_* generator
expressions on iOS
CC: cmake@cmake.org
On 29-Mar-16 16:14, Vladimír Vondruš wrote:
I saw that commit, yes. Since there is no additional round of variable expansion, wouldn't it
be better to expand the ${EFFECTIVE_PLATFORM_NAME} to at least something fixed (based on the
value of CMAKE_OSX_SYSROOT), instead of making the generator expression unusable in all cases?
It seems reasonable to me that if I set CMAKE_OSX_SYSROOT to "iPhoneSimulator", the
output of $<TARGET_LOCATION:something> would be something like
/path/to/my/build/dir/Debug-iphonesimulator/something.framework
instead of:
/path/to/my/build/dir/Debug${EFFECTIVE_PLATFORM_NAME}/something.framework
Because the latter is unusable, with the former I have at least the ability to
use it with a single fixed SDK.
Thanks
mosra
As far as I know you have to set CMAKE_OSX_SYSROOT to "iphoneos" so
Xcode project will contain both simulator and device configuration.
Without this change such feature like CMAKE_IOS_INSTALL_COMBINED will
not work. In other words substituting `${EFFECTIVE_PLATFORM_NAME}` may
fit your needs but will broke CMAKE_IOS_INSTALL_COMBINED for everybody
(at least if this behaviour will be unconditional).
Ruslo
______________________________________________________________
Od: Ruslan Baratov <ruslan_bara...@yahoo.com>
Komu: "Vladimír Vondruš" <mo...@centrum.cz>
Datum: 21.03.2016 14:56
Předmět: Re: [CMake] EFFECTIVE_PLATFORM_NAME not expanded in TARGET_* generator
expressions on iOS
CC: cmake@cmake.org
On 21-Mar-16 19:42, Vladimír Vondruš wrote:
Hello,
I came across this problem when trying to use XCTest macros (
https://cmake.org/cmake/help/latest/module/FindXCTest.html ) on iOS. When
compiling for OSX, ctest properly executes all test cases, but when targeting
iOS or iOS simulator, all the test cases fail similarly to the following:
25: Test command: /Applications/Xcode.app/Contents/Developer/usr/bin/xctest
"/Users/mosra/Code/corrade/build-ioss/src/Corrade/Utility/Test/Debug${EFFECTIVE_PLATFORM_NAME}/UtilityTypeTraitsTestRunner.xctest/../.."
25: Environment variables:
25:
DYLD_FRAMEWORK_PATH=/Users/mosra/Code/corrade/build-ioss/src/Corrade/Utility/Test/Debug${EFFECTIVE_PLATFORM_NAME}/UtilityTypeTraitsTest.framework/..
25: Test timeout computed to be: 9.99988e+06
25: 2016-03-21 12:41:38.799 xctest[31113:31078264] The bundle “Test”
couldn’t be loaded because its executable couldn’t be located. Try reinstalling
the bundle.
25/28 Test #25: UtilityTypeTraitsTest ...............***Failed 0.04
sec
As you can see, the `${EFFECTIVE_PLATFORM_NAME}` is not being expanded to
`-iphonesimulator` and thus the file is not found. The problem is that the
`$<TARGET_LINKER_FILE_DIR:target>` generator expression does not expand the
variable. On the other hand, installation works without an issue, because the
`cmake_install.cmake` scripts do additional round of variable expansion that
(accidentally?) fixes this. The relevant part of the CMake source is here:
https://github.com/Kitware/CMake/blob/cd569b962dbeaa7ea718021c16582cddd158df3a/Source/cmGeneratorTarget.cxx#L5063
From the source it looks like the generator is just putting the
"${EFFECTIVE_PLATFORM_NAME}" output and hopes that someone later expands it.
That's the case with install scripts (so they work), but not with generator expressions.
The `TARGET_LINKER_FILE_DIR` is not the only affected, the problem is the same for all
`TARGET_*` generator expressions.
Currently I'm working around this by partially hardcoding the path, but that's
far from ideal and I would like to avoid that:
if(CMAKE_OSX_SYSROOT MATCHES "iPhoneOS")
set(platform_name "-iphoneos")
elseif(CMAKE_OSX_SYSROOT MATCHES "iPhoneSimulator")
set(platform_name "-iphonesimulator")
endif()
set(target_linker_file_dir
${CMAKE_CURRENT_BINARY_DIR}/$<CONFIG>${platform_name}/${target}.xctest)
Is there any way to fix this directly in CMake? Also the above workaround works
only when targeting single SDK and not when having single generated project for
both the device and the simulator.
Thank you a lot for your help.
mosra
I doubt I can help with the problem but just for your information:
* it wasn't fixed "accidentally", it was a fix for #12506:
https://github.com/Kitware/CMake/commit/48fe617e667d2e6b1e471cfb56346de51f984ba5
* there is no "additional round" of variable expansion,
EFFECTIVE_PLATFORM_NAME initialized from Xcode's environment variable
EFFECTIVE_PLATFORM_NAME on installation
As far as I understand the main general problem with iOS
device/simulator support is that CMake doesn't have multi-toolchain
feature from the box. So for now all this stuff worked by generating
some "universal" code that do work for both SDKs. The real SDK can be
triggered by additional explicit option, i.e.:
* cmake --build _builds -- -sdk iphoneos # trigger iphoneos SDK
* cmake --build _builds -- -sdk iphonesimulator # trigger
iphonesimulator SDK
Ruslo
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