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Loader uses pathcch.lib which is only available on Windows 8 and later #214

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brycehutchings opened this issue Oct 20, 2020 · 3 comments · Fixed by #239
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Loader uses pathcch.lib which is only available on Windows 8 and later #214

brycehutchings opened this issue Oct 20, 2020 · 3 comments · Fixed by #239
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synced to gitlab Synchronized to OpenXR internal GitLab

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@brycehutchings
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This is an unintentional side-effect of #198. The loader should use something else that is available on Windows 7 too. Since symbolic links are not an important use case for the loader on Windows, perhaps std::filesystem::absolute can be used instead?
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An issue (number 1471) has been filed to correspond to this issue in the internal Khronos GitLab.

If you have a Khronos account, you can access that issue at KHR:openxr/openxr#1471.

@rpavlik-bot rpavlik-bot added the synced to gitlab Synchronized to OpenXR internal GitLab label Nov 25, 2020
@aeikum aeikum mentioned this issue Jan 27, 2021
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@rpavlik
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rpavlik commented Jan 29, 2021

does the issue associated with #198 (that is, broken on UWP) apply to it too? Or do we just null this out and make it more of a no-op? I swear we had a discussion about this in the past week, must have been on mattermost or something.

@brycehutchings
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Yeah, we talked about it on Mattermost. The conclusion was that we can make the canonical functions no-op on WIN32 builds since the symlink-following functionality isn't needed on Windows. I can make this fix now that we have a solution that has some agreement.

@brycehutchings brycehutchings self-assigned this Feb 1, 2021
@brycehutchings brycehutchings linked a pull request Feb 1, 2021 that will close this issue
Remove canonicalization in Windows loader #239
Merged
rpavlik added a commit that referenced this issue Apr 14, 2021
@rpavlik
OpenXR SDK 1.0.15 (2021-04-13)
57cfe17 
The main SDK change in this release is that the OpenXR headers NO LONGER
EXPOSE EXTENSION FUNCTION PROTOTYPES because extension functions are not
exported by the loader. This should prevent some confusion during
development without affecting code that correctly compiles and links
with older SDKs. Code that was compiled but not linked (for instance,
the automated tests of example source in the specification) and that
would not have successfully linked may have their defects highlighted by
this change, however. If you need those prototypes still available,
there is a preprocessor define that can re-enable them. The function
pointer definitions are always available.

In addition to that header change, this release contains three new
vendor extensions plus an assortment of SDK fixes.

-   Registry
    -   Add XR_VARJO_foveated_rendering vendor extension. (internal MR
        1981)
    -   Add XR_VARJO_composition_layer_depth_test vendor extension.
        (internal MR 1998)
    -   Add XR_VARJO_environment_depth_estimation vendor extension.
        (internal MR 1998)
    -   Add uint16_t to openxr_platform_defines (and associated scripts)
        so it may be used easily by extensions. (internal MR 2017)
    -   Reserve extension 149 for working group use. (internal MR 1999)
    -   Reserve extension numbers 150 to 155 for ULTRALEAP extensions
        (internal MR 2006)
    -   Reserve extension numbers 156-165 for Facebook. (internal MR
        2018)
-   SDK
    -   Hide prototypes for extension functions unless explicitly
        requested by defining XR_EXTENSION_PROTOTYPES. These functions
        are not exported from the loader, so having their prototypes
        available is confusing and leads to link errors, etc.
        (OpenXR-SDK-Source/#251, OpenXR-SDK-Source/#174, internal issue
        1554, internal issue 1338)
    -   Also list API layers in list tool. (internal MR 1991)
    -   Ensure we expose the OpenXR headers in the build-time interface
        of the loader, as well as the install-time interface, for use
        with FetchContent.cmake. (OpenXR-SDK-Source/#242,
        OpenXR-SDK-Source/#195, internal issue 1409)
    -   Improve BUILDING.md, including adding details on how to specify
        architecture for VS2019. (OpenXR-SDK-Source/#245,
        OpenXR-SDK-Source/#253)
    -   Loader: Fix loader failing to load on Windows 7 due to pathcch
        dependency. (OpenXR-SDK-Source/#239, OpenXR-SDK-Source/#214,
        internal issue 1471, OpenXR-SDK-Source/#236, internal issue
        1519)
    -   Loader: Fix conflicting filename in openxr_loader.def causing a
        linker warning when building debug for Windows.
        (OpenXR-SDK-Source/#246)
    -   Update cgenerator.py to generate header comments in openxr.h to
        show when a struct extends another struct (internal MR 2005)
    -   hello_xr: Check for shaderStorageImageMultisample feature in
        Vulkan plugin before using it. (OpenXR-SDK-Source/#234,
        OpenXR-SDK-Source/#233, internal issue 1518)
    -   hello_xr: Make sure common.h includes the reflection header that
        it uses. (OpenXR-SDK-Source/#247)
    -   layers: Revise documentation, re-formatting and updating to
        refer to real functions and URLs. (internal MR 2012)
    -   loader: Check the instance handle passed to
        xrGetInstanceProcAddr. (internal MR 1980)
    -   loader: Fix building OpenXR-SDK with CMake’s multi-config Ninja
        generator. (OpenXR-SDK-Source/#249, OpenXR-SDK-Source/#231)
    -   openxr_reflection.h: Make reproducible/deterministic by sorting
        protection defines in the script. (internal MR 1993, internal
        issue 1424)
    -   xr_dependencies (shared utility): Include unknwn.h on Windows,
        even without D3D enabled. (OpenXR-SDK-Source/#250,
        OpenXR-SDK-Source/#237)
rhabacker pushed a commit to rhabacker/OpenXR-SDK-Source that referenced this issue Nov 16, 2022
@rpavlik
OpenXR SDK 1.0.15 (2021-04-13)
2072fe9 
The main SDK change in this release is that the OpenXR headers NO LONGER
EXPOSE EXTENSION FUNCTION PROTOTYPES because extension functions are not
exported by the loader. This should prevent some confusion during
development without affecting code that correctly compiles and links
with older SDKs. Code that was compiled but not linked (for instance,
the automated tests of example source in the specification) and that
would not have successfully linked may have their defects highlighted by
this change, however. If you need those prototypes still available,
there is a preprocessor define that can re-enable them. The function
pointer definitions are always available.

In addition to that header change, this release contains three new
vendor extensions plus an assortment of SDK fixes.

-   Registry
    -   Add XR_VARJO_foveated_rendering vendor extension. (internal MR
        1981)
    -   Add XR_VARJO_composition_layer_depth_test vendor extension.
        (internal MR 1998)
    -   Add XR_VARJO_environment_depth_estimation vendor extension.
        (internal MR 1998)
    -   Add uint16_t to openxr_platform_defines (and associated scripts)
        so it may be used easily by extensions. (internal MR 2017)
    -   Reserve extension 149 for working group use. (internal MR 1999)
    -   Reserve extension numbers 150 to 155 for ULTRALEAP extensions
        (internal MR 2006)
    -   Reserve extension numbers 156-165 for Facebook. (internal MR
        2018)
-   SDK
    -   Hide prototypes for extension functions unless explicitly
        requested by defining XR_EXTENSION_PROTOTYPES. These functions
        are not exported from the loader, so having their prototypes
        available is confusing and leads to link errors, etc.
        (OpenXR-SDK-Source/KhronosGroup#251, OpenXR-SDK-Source/KhronosGroup#174, internal issue
        1554, internal issue 1338)
    -   Also list API layers in list tool. (internal MR 1991)
    -   Ensure we expose the OpenXR headers in the build-time interface
        of the loader, as well as the install-time interface, for use
        with FetchContent.cmake. (OpenXR-SDK-Source/KhronosGroup#242,
        OpenXR-SDK-Source/KhronosGroup#195, internal issue 1409)
    -   Improve BUILDING.md, including adding details on how to specify
        architecture for VS2019. (OpenXR-SDK-Source/KhronosGroup#245,
        OpenXR-SDK-Source/KhronosGroup#253)
    -   Loader: Fix loader failing to load on Windows 7 due to pathcch
        dependency. (OpenXR-SDK-Source/KhronosGroup#239, OpenXR-SDK-Source/KhronosGroup#214,
        internal issue 1471, OpenXR-SDK-Source/KhronosGroup#236, internal issue
        1519)
    -   Loader: Fix conflicting filename in openxr_loader.def causing a
        linker warning when building debug for Windows.
        (OpenXR-SDK-Source/KhronosGroup#246)
    -   Update cgenerator.py to generate header comments in openxr.h to
        show when a struct extends another struct (internal MR 2005)
    -   hello_xr: Check for shaderStorageImageMultisample feature in
        Vulkan plugin before using it. (OpenXR-SDK-Source/KhronosGroup#234,
        OpenXR-SDK-Source/KhronosGroup#233, internal issue 1518)
    -   hello_xr: Make sure common.h includes the reflection header that
        it uses. (OpenXR-SDK-Source/KhronosGroup#247)
    -   layers: Revise documentation, re-formatting and updating to
        refer to real functions and URLs. (internal MR 2012)
    -   loader: Check the instance handle passed to
        xrGetInstanceProcAddr. (internal MR 1980)
    -   loader: Fix building OpenXR-SDK with CMake’s multi-config Ninja
        generator. (OpenXR-SDK-Source/KhronosGroup#249, OpenXR-SDK-Source/KhronosGroup#231)
    -   openxr_reflection.h: Make reproducible/deterministic by sorting
        protection defines in the script. (internal MR 1993, internal
        issue 1424)
    -   xr_dependencies (shared utility): Include unknwn.h on Windows,
        even without D3D enabled. (OpenXR-SDK-Source/KhronosGroup#250,
        OpenXR-SDK-Source/KhronosGroup#237)
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Remove canonicalization in Windows loader brycehutchings/OpenXR-SDK-Source
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