<div dir="ltr"><p style="margin-top:0px;margin-bottom:16px;color:rgb(51,51,51);font-family:'Helvetica Neue',Helvetica,'Segoe UI',Arial,freesans,sans-serif;font-size:16px;line-height:25px">I'm hitting a link error when linking an iOS application with an internally created framework/library using the the CMake Xcode generator and an iOS toolchain. I've put together a minimal CMakeLists.txt example here:</p><p style="margin-top:0px;margin-bottom:16px;color:rgb(51,51,51);font-family:'Helvetica Neue',Helvetica,'Segoe UI',Arial,freesans,sans-serif;font-size:16px;line-height:25px"><a href="https://github.com/headupinclouds/cmake_framework_test/" target="_blank">https://github.com/headupinclouds/cmake_framework_test/</a><br></p><p style="margin-top:0px;margin-bottom:16px;color:rgb(51,51,51);font-family:'Helvetica Neue',Helvetica,'Segoe UI',Arial,freesans,sans-serif;font-size:16px;line-height:25px">The problem is described in detail in the the README, and reproduced here in the email for completeness.</p><p style="margin-top:0px;margin-bottom:16px;color:rgb(51,51,51);font-family:'Helvetica Neue',Helvetica,'Segoe UI',Arial,freesans,sans-serif;font-size:16px;line-height:25px">The repository is intended as a simple unit test to illustrate an apparent link and build location mismatch when linking a framework to an iOS application using the "standard" <a href="https://code.google.com/p/ios-cmake/" target="_blank" style="color:rgb(65,131,196);background-color:transparent;text-decoration:none">iOS toolchain</a> (I realize this toolchain isn't provided with CMake). I've included the ios toolchain in this repository to make it easy to reproduce the issue. I've include both the iOS application that reproduces the link error, and an OS X application, which links to the library in correct framework location. I'm looking for a CMakeLists.txt fix or possible workaround. There are two top level convenience bash scripts for building the applications with cmake using an xcode generator. The CMake version is 3.2.1.</p><pre style="white-space:pre-wrap;overflow:auto;font-family:Consolas,'Liberation Mono',Menlo,Courier,monospace;font-size:14px;margin-top:0px;margin-bottom:16px;line-height:1.45;padding:16px;background-color:rgb(247,247,247);border-top-left-radius:3px;border-top-right-radius:3px;border-bottom-right-radius:3px;border-bottom-left-radius:3px;word-wrap:normal;color:rgb(51,51,51)"><code style="font-family:Consolas,'Liberation Mono',Menlo,Courier,monospace;padding:0px;margin:0px;background-color:transparent;border-top-left-radius:3px;border-top-right-radius:3px;border-bottom-right-radius:3px;border-bottom-left-radius:3px;word-break:normal;border:0px;display:inline;line-height:inherit;word-wrap:normal">cmake --version
cmake version 3.2.1
</code></pre><h3 style="margin-top:1em;margin-bottom:16px;line-height:1.43;font-size:1.5em;color:rgb(51,51,51);font-family:'Helvetica Neue',Helvetica,'Segoe UI',Arial,freesans,sans-serif"><a href="https://github.com/headupinclouds/cmake_framework_test/blob/master/README.md#ios-framework-and-application-error" target="_blank" style="color:rgb(65,131,196);background-color:transparent;text-decoration:none;display:block;padding-right:6px;padding-left:30px;line-height:1.2"></a>iOS framework and application error:</h3><pre style="white-space:pre-wrap;overflow:auto;font-family:Consolas,'Liberation Mono',Menlo,Courier,monospace;font-size:14px;margin-top:0px;margin-bottom:16px;line-height:1.45;padding:16px;background-color:rgb(247,247,247);border-top-left-radius:3px;border-top-right-radius:3px;border-bottom-right-radius:3px;border-bottom-left-radius:3px;word-wrap:normal;color:rgb(51,51,51)"><code style="font-family:Consolas,'Liberation Mono',Menlo,Courier,monospace;padding:0px;margin:0px;background-color:transparent;border-top-left-radius:3px;border-top-right-radius:3px;border-bottom-right-radius:3px;border-bottom-left-radius:3px;word-break:normal;border:0px;display:inline;line-height:inherit;word-wrap:normal">bash -fx ./test-ios.sh
+ NAME=_builds/ios
+ cmake -GXcode -H. -B_builds/ios -DCMAKE_TOOLCHAIN_FILE=iOS.cmake
<snip>
clang: error: no such file or directory: '/Users/dhirvonen/devel/cmake_framework_test/_builds/ios/Debug-iphoneos/TF.framework/Versions/A/TF'
** BUILD FAILED **
The following build commands failed:
Ld _builds/ios/Debug-iphoneos/testa.app/testa normal armv7
(1 failure)
library path: _builds/ios/Debug-iphoneos/TF.framework/TF
</code></pre><p style="margin-top:0px;margin-bottom:16px;color:rgb(51,51,51);font-family:'Helvetica Neue',Helvetica,'Segoe UI',Arial,freesans,sans-serif;font-size:16px;line-height:25px">This produces a flat framework layout (ignoring the FRAMEWORK_VERSION property (which is fine with me if I can get it to work)). It looks like this:</p><pre style="white-space:pre-wrap;overflow:auto;font-family:Consolas,'Liberation Mono',Menlo,Courier,monospace;font-size:14px;margin-top:0px;margin-bottom:16px;line-height:1.45;padding:16px;background-color:rgb(247,247,247);border-top-left-radius:3px;border-top-right-radius:3px;border-bottom-right-radius:3px;border-bottom-left-radius:3px;word-wrap:normal;color:rgb(51,51,51)"><code style="font-family:Consolas,'Liberation Mono',Menlo,Courier,monospace;padding:0px;margin:0px;background-color:transparent;border-top-left-radius:3px;border-top-right-radius:3px;border-bottom-right-radius:3px;border-bottom-left-radius:3px;word-break:normal;border:0px;display:inline;line-height:inherit;word-wrap:normal">tree _builds/ios/Debug-iphoneos/TF.framework
_builds/ios/Debug-iphoneos/TF.framework
├── Info.plist
├── TF
└── _CodeSignature
└── CodeResources
</code></pre><p style="margin-top:0px;margin-bottom:16px;color:rgb(51,51,51);font-family:'Helvetica Neue',Helvetica,'Segoe UI',Arial,freesans,sans-serif;font-size:16px;line-height:25px">But when it reaches the link command for the ios application:</p><pre style="white-space:pre-wrap;overflow:auto;font-family:Consolas,'Liberation Mono',Menlo,Courier,monospace;font-size:14px;margin-top:0px;margin-bottom:16px;line-height:1.45;padding:16px;background-color:rgb(247,247,247);border-top-left-radius:3px;border-top-right-radius:3px;border-bottom-right-radius:3px;border-bottom-left-radius:3px;word-wrap:normal;color:rgb(51,51,51)"><code style="font-family:Consolas,'Liberation Mono',Menlo,Courier,monospace;padding:0px;margin:0px;background-color:transparent;border-top-left-radius:3px;border-top-right-radius:3px;border-bottom-right-radius:3px;border-bottom-left-radius:3px;word-break:normal;border:0px;display:inline;line-height:inherit;word-wrap:normal">target_link_libraries(testa TF)
</code></pre><p style="margin-top:0px;margin-bottom:16px;color:rgb(51,51,51);font-family:'Helvetica Neue',Helvetica,'Segoe UI',Arial,freesans,sans-serif;font-size:16px;line-height:25px">it fails, since it seems to expect the library to be two directories down within a versioned framework layout:</p><pre style="white-space:pre-wrap;overflow:auto;font-family:Consolas,'Liberation Mono',Menlo,Courier,monospace;font-size:14px;margin-top:0px;margin-bottom:16px;line-height:1.45;padding:16px;background-color:rgb(247,247,247);border-top-left-radius:3px;border-top-right-radius:3px;border-bottom-right-radius:3px;border-bottom-left-radius:3px;word-wrap:normal;color:rgb(51,51,51)"><code style="font-family:Consolas,'Liberation Mono',Menlo,Courier,monospace;padding:0px;margin:0px;background-color:transparent;border-top-left-radius:3px;border-top-right-radius:3px;border-bottom-right-radius:3px;border-bottom-left-radius:3px;word-break:normal;border:0px;display:inline;line-height:inherit;word-wrap:normal">TF.framework/Versions/A/TF
</code></pre><p style="margin-top:0px;margin-bottom:16px;color:rgb(51,51,51);font-family:'Helvetica Neue',Helvetica,'Segoe UI',Arial,freesans,sans-serif;font-size:16px;line-height:25px">instead the directory is here:</p><pre style="white-space:pre-wrap;overflow:auto;font-family:Consolas,'Liberation Mono',Menlo,Courier,monospace;font-size:14px;margin-top:0px;margin-bottom:16px;line-height:1.45;padding:16px;background-color:rgb(247,247,247);border-top-left-radius:3px;border-top-right-radius:3px;border-bottom-right-radius:3px;border-bottom-left-radius:3px;word-wrap:normal;color:rgb(51,51,51)"><code style="font-family:Consolas,'Liberation Mono',Menlo,Courier,monospace;padding:0px;margin:0px;background-color:transparent;border-top-left-radius:3px;border-top-right-radius:3px;border-bottom-right-radius:3px;border-bottom-left-radius:3px;word-break:normal;border:0px;display:inline;line-height:inherit;word-wrap:normal">TF.framework/TF
</code></pre><p style="margin-top:0px;margin-bottom:16px;color:rgb(51,51,51);font-family:'Helvetica Neue',Helvetica,'Segoe UI',Arial,freesans,sans-serif;font-size:16px;line-height:25px">I'm looking for a solution to either:</p><ul style="padding:0px 0px 0px 2em;margin-top:0px;margin-bottom:16px;color:rgb(51,51,51);font-family:'Helvetica Neue',Helvetica,'Segoe UI',Arial,freesans,sans-serif;font-size:16px;line-height:25px"><li style="margin-left:15px">correct the TF link path to use the actual (non versioned) framework layout that is currently generated, or</li><li style="margin-left:15px">correct the framework so that it uses the versioned layout to make that consistent with the link path </li></ul><h3 style="margin-top:1em;margin-bottom:16px;line-height:1.43;font-size:1.5em;color:rgb(51,51,51);font-family:'Helvetica Neue',Helvetica,'Segoe UI',Arial,freesans,sans-serif"><a href="https://github.com/headupinclouds/cmake_framework_test/blob/master/README.md#os-x-framework-and-application-success" target="_blank" style="color:rgb(65,131,196);background-color:transparent;text-decoration:none;display:block;padding-right:6px;padding-left:30px;line-height:1.2"></a>OS X framework and application success:</h3><p style="margin-top:0px;margin-bottom:16px;color:rgb(51,51,51);font-family:'Helvetica Neue',Helvetica,'Segoe UI',Arial,freesans,sans-serif;font-size:16px;line-height:25px">When I build this for OS X it seems to work fine. </p><pre style="white-space:pre-wrap;overflow:auto;font-family:Consolas,'Liberation Mono',Menlo,Courier,monospace;font-size:14px;margin-top:0px;margin-bottom:16px;line-height:1.45;padding:16px;background-color:rgb(247,247,247);border-top-left-radius:3px;border-top-right-radius:3px;border-bottom-right-radius:3px;border-bottom-left-radius:3px;word-wrap:normal;color:rgb(51,51,51)"><code style="font-family:Consolas,'Liberation Mono',Menlo,Courier,monospace;padding:0px;margin:0px;background-color:transparent;border-top-left-radius:3px;border-top-right-radius:3px;border-bottom-right-radius:3px;border-bottom-left-radius:3px;word-break:normal;border:0px;display:inline;line-height:inherit;word-wrap:normal">bash -fx ./test-osx.sh
+ NAME=_builds/osx
+ cmake -GXcode -H. -B_builds/osx
<snip>
** BUILD SUCCEEDED **
library path: _builds/osx/Debug/TF.framework/Versions/A/TF
</code></pre><p style="margin-top:0px;margin-bottom:16px;color:rgb(51,51,51);font-family:'Helvetica Neue',Helvetica,'Segoe UI',Arial,freesans,sans-serif;font-size:16px;line-height:25px">This produces a framework with the following layout:</p><pre style="white-space:pre-wrap;overflow:auto;font-family:Consolas,'Liberation Mono',Menlo,Courier,monospace;font-size:14px;margin-top:0px;margin-bottom:16px;line-height:1.45;padding:16px;background-color:rgb(247,247,247);border-top-left-radius:3px;border-top-right-radius:3px;border-bottom-right-radius:3px;border-bottom-left-radius:3px;word-wrap:normal;color:rgb(51,51,51)"><code style="font-family:Consolas,'Liberation Mono',Menlo,Courier,monospace;padding:0px;margin:0px;background-color:transparent;border-top-left-radius:3px;border-top-right-radius:3px;border-bottom-right-radius:3px;border-bottom-left-radius:3px;word-break:normal;border:0px;display:inline;line-height:inherit;word-wrap:normal">tree _builds/osx/Debug/
_builds/osx/Debug/
├── TF.framework
│ ├── Resources -> Versions/Current/Resources
│ ├── TF -> Versions/Current/TF
│ └── Versions
│ ├── A
│ │ ├── Resources
│ │ │ └── Info.plist
│ │ ├── TF
│ │ └── _CodeSignature
│ │ └── CodeResources
│ └── Current -> A
└── testb
</code></pre><p style="margin-top:0px;margin-bottom:16px;color:rgb(51,51,51);font-family:'Helvetica Neue',Helvetica,'Segoe UI',Arial,freesans,sans-serif;font-size:16px;line-height:25px">and the call to</p><pre style="white-space:pre-wrap;overflow:auto;font-family:Consolas,'Liberation Mono',Menlo,Courier,monospace;font-size:14px;margin-top:0px;margin-bottom:16px;line-height:1.45;padding:16px;background-color:rgb(247,247,247);border-top-left-radius:3px;border-top-right-radius:3px;border-bottom-right-radius:3px;border-bottom-left-radius:3px;word-wrap:normal;color:rgb(51,51,51)"><code style="font-family:Consolas,'Liberation Mono',Menlo,Courier,monospace;padding:0px;margin:0px;background-color:transparent;border-top-left-radius:3px;border-top-right-radius:3px;border-bottom-right-radius:3px;border-bottom-left-radius:3px;word-break:normal;border:0px;display:inline;line-height:inherit;word-wrap:normal">target_link_libraries(testb TF)
</code></pre><p style="margin-top:0px;margin-bottom:16px;color:rgb(51,51,51);font-family:'Helvetica Neue',Helvetica,'Segoe UI',Arial,freesans,sans-serif;font-size:16px;line-height:25px">picks up the TF library in the correct location.</p><p style="margin-top:0px;margin-bottom:16px;color:rgb(51,51,51);font-family:'Helvetica Neue',Helvetica,'Segoe UI',Arial,freesans,sans-serif;font-size:16px;line-height:25px">I'm curious if there is a variable or property that needs to be set for the iOS example to give the same framework layout. <br></p></div>