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<p class="MsoNormal">Hello,</p>
<p class="MsoNormal"> </p>
<p class="MsoNormal">I recently upgraded to Xcode v5 on Mac OSX and started getting build failures. Below is a simplified project that produces the same problem, followed by the error message generated by Xcode. The problem occurs with version v5 but not
v4.6.x of Xcode. I’m running CMake 2.8.10.2.</p>
<p class="MsoNormal"> </p>
<p class="MsoNormal"><span style="font-size:10.0pt; font-family:"Courier New"">::::::::::::::::</span></p>
<p class="MsoNormal"><span style="font-size:10.0pt; font-family:"Courier New"">CMakeLists.txt</span></p>
<p class="MsoNormal"><span style="font-size:10.0pt; font-family:"Courier New"">::::::::::::::::</span></p>
<p class="MsoNormal"><span style="font-size:10.0pt; font-family:"Courier New"">cmake_minimum_required ( VERSION 2.8.8 )</span></p>
<p class="MsoNormal"><span style="font-size:10.0pt; font-family:"Courier New""> </span></p>
<p class="MsoNormal"><span style="font-size:10.0pt; font-family:"Courier New"">project( test )</span></p>
<p class="MsoNormal"><span style="font-size:10.0pt; font-family:"Courier New""> </span></p>
<p class="MsoNormal"><span style="font-size:10.0pt; font-family:"Courier New"">add_library( a_obj OBJECT t1.c t2.c )</span></p>
<p class="MsoNormal"><span style="font-size:10.0pt; font-family:"Courier New"">add_library( b_obj OBJECT t3.c t4.c )</span></p>
<p class="MsoNormal"><span style="font-size:10.0pt; font-family:"Courier New""> </span></p>
<p class="MsoNormal"><span style="font-size:10.0pt; font-family:"Courier New"">add_library( a dummy.c $<TARGET_OBJECTS:a_obj> )</span></p>
<p class="MsoNormal"><span style="font-size:10.0pt; font-family:"Courier New"">add_library( b dummy.c $<TARGET_OBJECTS:b_obj> )</span></p>
<p class="MsoNormal"><span style="font-size:10.0pt; font-family:"Courier New""> </span></p>
<p class="MsoNormal"><span style="font-size:10.0pt; font-family:"Courier New"">add_executable( t t.c )</span></p>
<p class="MsoNormal"><span style="font-size:10.0pt; font-family:"Courier New"">target_link_libraries( t a b )</span></p>
<p class="MsoNormal"><span style="font-size:10.0pt; font-family:"Courier New""> </span></p>
<p class="MsoNormal"><span style="font-size:10.0pt; font-family:"Courier New""> </span></p>
<p class="MsoNormal"><span style="font-size:10.0pt; font-family:"Courier New"">::::::::::::::<i></i></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt; font-family:"Courier New"">t.c</span></p>
<p class="MsoNormal"><span style="font-size:10.0pt; font-family:"Courier New"">::::::::::::::<i></i></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt; font-family:"Courier New"">#include <stdio.h></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt; font-family:"Courier New""> </span></p>
<p class="MsoNormal"><span style="font-size:10.0pt; font-family:"Courier New"">int func1( int a );</span></p>
<p class="MsoNormal"><span style="font-size:10.0pt; font-family:"Courier New"">int func2( int a );</span></p>
<p class="MsoNormal"><span style="font-size:10.0pt; font-family:"Courier New"">int func3( int a );</span></p>
<p class="MsoNormal"><span style="font-size:10.0pt; font-family:"Courier New"">int func4( int a );</span></p>
<p class="MsoNormal"><span style="font-size:10.0pt; font-family:"Courier New""> </span></p>
<p class="MsoNormal"><span style="font-size:10.0pt; font-family:"Courier New"">int main()</span></p>
<p class="MsoNormal"><span style="font-size:10.0pt; font-family:"Courier New"">{</span></p>
<p class="MsoNormal"><span style="font-size:10.0pt; font-family:"Courier New""> int a = 100;</span></p>
<p class="MsoNormal"><span style="font-size:10.0pt; font-family:"Courier New""> printf( "%d %d %d %d %d\n", a, func1(a), func2(a), func3(a), func4(a) );</span></p>
<p class="MsoNormal"><span style="font-size:10.0pt; font-family:"Courier New""> return 0;</span></p>
<p class="MsoNormal"><span style="font-size:10.0pt; font-family:"Courier New"">}</span></p>
<p class="MsoNormal"><span style="font-size:10.0pt; font-family:"Courier New""> </span></p>
<p class="MsoNormal"><span style="font-size:10.0pt; font-family:"Courier New""> </span></p>
<p class="MsoNormal"><span style="font-size:10.0pt; font-family:"Courier New"">::::::::::::::<i></i></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt; font-family:"Courier New"">t1.c</span></p>
<p class="MsoNormal"><span style="font-size:10.0pt; font-family:"Courier New"">::::::::::::::<i></i></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt; font-family:"Courier New"">int func1( int a )</span></p>
<p class="MsoNormal"><span style="font-size:10.0pt; font-family:"Courier New"">{</span></p>
<p class="MsoNormal"><span style="font-size:10.0pt; font-family:"Courier New""> return a*1;</span></p>
<p class="MsoNormal"><span style="font-size:10.0pt; font-family:"Courier New"">}</span></p>
<p class="MsoNormal"><span style="font-size:10.0pt; font-family:"Courier New""> </span></p>
<p class="MsoNormal"><span style="font-size:10.0pt; font-family:"Courier New""> </span></p>
<p class="MsoNormal"><span style="font-size:10.0pt; font-family:"Courier New"">::::::::::::::<i></i></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt; font-family:"Courier New"">t2.c</span></p>
<p class="MsoNormal"><span style="font-size:10.0pt; font-family:"Courier New"">::::::::::::::<i></i></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt; font-family:"Courier New"">int func2( int a )</span></p>
<p class="MsoNormal"><span style="font-size:10.0pt; font-family:"Courier New"">{</span></p>
<p class="MsoNormal"><span style="font-size:10.0pt; font-family:"Courier New""> return a*2;</span></p>
<p class="MsoNormal"><span style="font-size:10.0pt; font-family:"Courier New"">}</span></p>
<p class="MsoNormal"><span style="font-size:10.0pt; font-family:"Courier New""> </span></p>
<p class="MsoNormal"><span style="font-size:10.0pt; font-family:"Courier New""> </span></p>
<p class="MsoNormal"><span style="font-size:10.0pt; font-family:"Courier New"">::::::::::::::<i></i></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt; font-family:"Courier New"">t3.c</span></p>
<p class="MsoNormal"><span style="font-size:10.0pt; font-family:"Courier New"">::::::::::::::<i></i></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt; font-family:"Courier New"">int func3( int a )</span></p>
<p class="MsoNormal"><span style="font-size:10.0pt; font-family:"Courier New"">{</span></p>
<p class="MsoNormal"><span style="font-size:10.0pt; font-family:"Courier New""> return a*3;</span></p>
<p class="MsoNormal"><span style="font-size:10.0pt; font-family:"Courier New"">}</span></p>
<p class="MsoNormal"><span style="font-size:10.0pt; font-family:"Courier New""> </span></p>
<p class="MsoNormal"><span style="font-size:10.0pt; font-family:"Courier New""> </span></p>
<p class="MsoNormal"><span style="font-size:10.0pt; font-family:"Courier New"">::::::::::::::<i></i></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt; font-family:"Courier New"">t4.c</span></p>
<p class="MsoNormal"><span style="font-size:10.0pt; font-family:"Courier New"">::::::::::::::<i></i></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt; font-family:"Courier New"">int func4( int a )</span></p>
<p class="MsoNormal"><span style="font-size:10.0pt; font-family:"Courier New"">{</span></p>
<p class="MsoNormal"><span style="font-size:10.0pt; font-family:"Courier New""> return a*4;</span></p>
<p class="MsoNormal"><span style="font-size:10.0pt; font-family:"Courier New"">}</span></p>
<p class="MsoNormal"><span style="font-size:10.0pt; font-family:"Courier New""> </span></p>
<p class="MsoNormal"><span style="font-size:10.0pt; font-family:"Courier New""> </span></p>
<p class="MsoNormal"><span style="font-size:10.0pt; font-family:"Courier New"">dummy.c is empty</span></p>
<p class="MsoNormal"><span style="font-size:10.0pt; font-family:"Courier New""> </span></p>
<p class="MsoNormal"><span style="font-size:10.0pt; font-family:"Courier New""> </span></p>
<p class="MsoNormal"><span style="font-size:12.0pt">When I run CMake, no errors; running xcodebuild gives:</span></p>
<p class="MsoNormal"><span style="font-size:10.0pt; font-family:"Courier New""> </span></p>
<p class="MsoNormal"><span style="font-size:10.0pt; font-family:"Courier New"">/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/libtool: can't open file: /Users/jschenck/TestBuild/test.build/Release/a_obj.build/Objects-normal/undefined_arch/t1.o
(No such file or directory)</span></p>
<p class="MsoNormal"><span style="font-size:10.0pt; font-family:"Courier New"">/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/libtool: can't open file: /Users/jschenck/TestBuild/test.build/Release/a_obj.build/Objects-normal/undefined_arch/t2.o
(No such file or directory)</span></p>
<p class="MsoNormal"><span style="font-size:10.0pt; font-family:"Courier New"">Command /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/libtool failed with exit code 1</span></p>
<p class="MsoNormal"><span style="font-size:10.0pt; font-family:"Courier New""> </span></p>
<p class="MsoNormal"><span style="font-size:10.0pt; font-family:"Courier New""> </span></p>
<p class="MsoNormal"><span style="font-size:12.0pt">The .o files can instead be found here:</span></p>
<p class="MsoNormal"><span style="font-size:10.0pt; font-family:"Courier New""> </span></p>
<p class="MsoNormal"><span style="font-size:10.0pt; font-family:"Courier New"">$ find . -name t1.o</span></p>
<p class="MsoNormal"><span style="font-size:10.0pt; font-family:"Courier New"">./test.build/Release/a_obj.build/Objects-normal/x86_64/t1.o</span></p>
<p class="MsoNormal"> </p>
<p class="MsoNormal"> </p>
<p class="MsoNormal">Thanks for your help. (Sorry for not running this on the latest version of CMake, but I rolled back Xcode to an earlier version and now will have a hard time reproducing it. If necessary, I can “upgrade” again.)</p>
<p class="MsoNormal"> </p>
<p class="MsoNormal">Regards,</p>
<p class="MsoNormal">Jeff Schenck</p>
<p class="MsoNormal"> </p>
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