[CMake] Object library doesn't work with CMake 2.8.10.2 Xcode generator

[Bin Chen]

David,

CMake generator works fine. In Xcode, I got this error when I click build.

Ld /Users/bchen/share/temp/cmake-obj-lib/b-xcode/Debug/t normal x86_64
    cd /Users/bchen/share/temp/cmake-obj-lib/src
    /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang -arch x86_64 -L/Users/bchen/share/temp/cmake-obj-lib/b-xcode/Debug -F/Users/bchen/share/temp/cmake-obj-lib/b-xcode/Debug -filelist /Users/bchen/share/temp/cmake-obj-lib/b-xcode/test.build/Debug/t.build/Objects-normal/x86_64/t.LinkFileList -Wl,-search_paths_first -Wl,-headerpad_max_install_names /Users/bchen/share/temp/cmake-obj-lib/b-xcode/Debug/liba.a /Users/bchen/share/temp/cmake-obj-lib/b-xcode/Debug/libb.a -o /Users/bchen/share/temp/cmake-obj-lib/b-xcode/Debug/t

clang: error: no such file or directory: '/Users/bchen/share/temp/cmake-obj-lib/b-xcode/Debug/liba.a'
clang: error: no such file or directory: '/Users/bchen/share/temp/cmake-obj-lib/b-xcode/Debug/libb.a'

Searched the build tree, it generated two libs with _obj.

./test.build/Debug/a_obj.build/Objects-normal/liba_obj.a
./test.build/Debug/b_obj.build/Objects-normal/libb_obj.a

Thanks!
Best regards,
Bin Chen

From: David Cole [mailto:david.cole at kitware.com]
Sent: Thursday, January 03, 2013 1:26 PM
To: Bin Chen
Cc: cmake at cmake.org
Subject: Re: [CMake] Object library doesn't work with CMake 2.8.10.2 Xcode generator

We have a test of OBJECT_LIBRARY that does work on all our dashboards, including ones running with Xcode.

When you say "it doesn't work" -- what do you mean? Do you get some error output?

On Thu, Jan 3, 2013 at 3:56 PM, Bin Chen <Bin.Chen at dts.com<mailto:Bin.Chen at dts.com>> wrote:
Following CMakeLists.txt doesn't work with Xcode (4.5.2). Is there anyone experienced the same? Thanks!
Visual Studio 10 and Linux makefile works fine.

cmake_minimum_required ( VERSION 2.8.8 )

project( test )

add_library( a_obj OBJECT t1.c t2.c )
add_library( b_obj OBJECT t3.c t4.c )

add_library( a $<TARGET_OBJECTS:a_obj> )
add_library( b $<TARGET_OBJECTS:b_obj> )

add_executable( t t.c )
target_link_libraries( t a b )


::::::::::::::
t.c
::::::::::::::
#include <stdio.h>

int func1( int a );
int func2( int a );
int func3( int a );
int func4( int a );

int main()
{
    int a = 100;
    printf( "%d %d %d %d %d\n", a, func1(a), func2(a), func3(a), func4(a) );
    return 0;
}
::::::::::::::
t1.c
::::::::::::::
int func1( int a )
{
    return a*1;
}
::::::::::::::
t2.c
::::::::::::::
int func2( int a )
{
    return a*2;
}
::::::::::::::
t3.c
::::::::::::::
int func3( int a )
{
    return a*3;
}
::::::::::::::
t4.c
::::::::::::::
int func4( int a )
{
    return a*4;
}

Best regards,
Bin Chen


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