It is possible, although perhaps not recommended...

You can use the two-argument form of the add_subdirectory command to add any directory you want as a &quot;sub&quot; directory:

    add_subdirectory(${CMAKE_CURRENT_SOURCE_DIR}/../A ${CMAKE_CURRENT_BINARY_DIR}/A)

The second argument of the two-argument form specifies where to put the binary directory for the added subdirectory.

You just have to be careful that there&#39;s not *also* another real sub-directory of B that is also named &quot;A&quot; and that is also add_subdirectory&#39;d... Because if you do, then that would be an error, as CMake cannot have two different source directories mapping into the same build directory.


Unfortunately, no.

As solution i may suggest you to add_subdirectory(A) and add_subdirectory(B) at the top level and set vars you want to export from A with PARENT_SCOPE.
This would allow B/CMakeLists.txt to access varibles defined in A/CMakeLists.txt

Or: *What is not a T-SQL statement?*

Except to resolve ambiguity, T-SQL syntax does not require a semicolon to terminate a statement. Despite this, [Itzik Ben-Gan](http://www.sqlmag.com/blog/puzzled-by-t-sql-blog-15/tsql/semicolon-140706) recommends using a semicolon to terminate a T-SQL statement because it makes code cleaner, more readable, easier to maintain, and more portable.

I don&#39;t know a precise definition of what a valid T-SQL statement is, so I might be confused here. But as far as I know, a BEGIN...END block is a T-SQL statement, so should be terminated by a semicolon. For example:

    IF OBJECT_ID(&#39;tempdb.dbo.#TempTable&#39;) IS NOT NULL
    BEGIN
      DROP TABLE #TempTable;
    END;

The code example in Microsoft&#39;s [BEGIN...END documentation](http://msdn.microsoft.com/en-us/library/ms190487.aspx) supports this conjecture:

    USE AdventureWorks2008R2;
    GO
    BEGIN TRANSACTION;
    GO
    IF @@TRANCOUNT = 0
    BEGIN
        SELECT FirstName, MiddleName 
        FROM Person.Person WHERE LastName = &#39;Adams&#39;;
        ROLLBACK TRANSACTION;
        PRINT N&#39;Rolling back the transaction two times would cause an error.&#39;;
    END;
    ROLLBACK TRANSACTION;
    PRINT N&#39;Rolled back the transaction.&#39;;
    GO
    /*
    Rolled back the tranaction.
    */

Itzik Ben-Gan contradicts this in the code example of Excercise 1-1 of [T-SQL Fundamentals](http://www.sql.co.il/books/tsqlfund2008/9780735626010_MSSQLServer08T-SQLFundamentals_ch03.pdf):

    SET NOCOUNT ON;
    USE TSQLFundamentals2008;
    IF OBJECT_ID(&#39;dbo.Nums&#39;, &#39;U&#39;) IS NOT NULL DROP TABLE dbo.Nums;
    CREATE TABLE dbo.Nums(n INT NOT NULL PRIMARY KEY);
    
    DECLARE @i AS INT = 1;
    BEGIN TRAN
      WHILE @i &lt;= 100000
      BEGIN
        INSERT INTO dbo.Nums VALUES(@i);
        SET @i = @i + 1;
      END
    COMMIT TRAN
    SET NOCOUNT OFF;

Microsoft&#39;s [Transact-SQL Syntax Conventions](http://msdn.microsoft.com/en-us/library/ms177563.aspx) document states that the semicolon &quot;will be required in a future version&quot; of T-SQL.

Commenting on Microsoft&#39;s intention to require the semicolon in a future version of T-SQL, Itzik notes some exceptions that aren&#39;t supposed to be terminated:

&gt; So far it was a requirement to use a semicolon only in specific cases. Now it looks like the plan is to make it a required terminator for all* T-SQL statements in some future version of SQL Server. 
&gt;
&gt; (*) Naturally there are cases that aren’t supposed to be terminated with a semicolon; those include (but are not limited to):
&gt;
&gt; - BEGIN
&gt;
&gt; - BEGIN TRAN
&gt;
&gt; - IF
&gt;
&gt; - ELSE
&gt;
&gt; - WHILE
&gt;
&gt; - BEGIN TRY
&gt;
&gt; - END TRY
&gt;
&gt; - BEGIN CATCH

Itzik seems to be consistent with himself, but Microsoft itself does not follow his recommendations. Compare Microsoft&#39;s `BEGIN TRANSACTION;` and Itzik&#39;s `BEGIN TRAN` in the previous examples.

In the code I maintain, I have seen even the `BEGIN` keyword terminated by semicolon:

    IF @HasWidget = 0x1
    BEGIN;
      SELECT WidgetID
      FROM tbWidgets;
    END;

I believe a T-SQL parser may consider the semicolon following the `BEGIN` keyword to terminate an empty statement rather than terminate the `BEGIN` keyword itself; I don&#39;t believe that `BEGIN` itself is a valid T-SQL statement.

This conjecture is supported by the fact that SQL Server 2008 successfully parses and executes the following query:

    SELECT 0;;

It&#39;s so confusing because there is no widely available specification of the T-SQL language, like the [Java Language Specification](http://java.sun.com/docs/books/jls/) for Java, so nowhere is there a formal definition of a T-SQL statement.

Am I wrong? Does such a specification exist for T-SQL, and is it publicly available?

Otherwise, should just I believe what Itzik says?

When should I not use a semicolon?

Is it possible to convert a string to a byte array and then convert it back to the original string in Java or Android?

My objective is to send some strings to a microcontroller (Arduino) and store it into EEPROM (which is the only 1&amp;nbsp; KB). I tried to use an [MD5][1] hash, but it seems it&#39;s only one-way encryption. What can I do to deal with this issue?

  [1]: http://en.wikipedia.org/wiki/MD5


Convert a String to a byte array and then back to the original String

Is It possible to include sibling directory as Sub-Directory inside cmake ?

Something like 

    A 
      CMakeLists.txt
    
    B
      CMakeLists.txt

and B includes A as sub-directory ?

CMAKE add sub-directory which is not sub-directory on real directory

Is It possible to include sibling directory as Sub-Directory inside cmake ?
Something like
<pre><code class="hljs language-css">A 
 CMakeLists.txt

B
 CMakeLists.txt
</code></pre>
and B includes A as sub-directory ?

Is there any way to create only symbol table using cmake for gdb ?

Creating symbol table for gdb using cmake

I&#39;m trying to set up a test project looking like my own project just to get things working first and it looks like this:

    /MainProject/inc/main.h
    /MainProject/src/main.cpp
    /LibProject/inc/test.h
    /LibProject/src/test.cpp

I&#39;ve found some tutorials, but I cant find out how to set up this when I have the inc and src folder? How would the CMakeLists.txt files look? Would I have one in /, one in each of the project folders? It seems like I dont need to have one in the inc and src folders?

CMake with include and source paths - basic setup

I have recently been sold on using CMake for compiling my C++ projects, and would now like to start writing some unit tests for my code. I have decided to use the Google Test utility to help with this, but require some help in getting started.

All day I have been reading various guides and examples include the [Primer][1], an [introduction at IBM][2] and some questions on SO ([here][3] and [here][4]) as well as other sources I&#39;ve lost track of. I realise there&#39;s plenty out there but somehow I am still having difficulties.

I&#39;m currently trying to implement the most basic test, to confirm I&#39;ve compiled/installed gtest right and it&#39;s not working. The only source file (testgtest.cpp) is taken almost exactly from [this][3] previous answer:

    #include &lt;iostream&gt;
    
    #include &quot;gtest/gtest.h&quot;
    
    TEST(sample_test_case, sample_test)
    {
        EXPECT_EQ(1, 1);
    }

and my associated CMakeLists.txt is as follows:

    cmake_minimum_required(VERSION 2.6)
    project(basic_test)
    
    # Setup testing
    enable_testing()
    find_package(GTest REQUIRED)
    include_directories(${GTEST_INCLUDE_DIR})
    
    # Add test cpp file
    add_executable(runUnitTests
    	testgtest.cpp
    )

    # Link test executable against gtest &amp; gtest_main
    target_link_libraries(runUnitTests ${GTEST_LIBRARY_DEBUG} ${GTEST_MAIN_LIBRARY_DEBUG})
    
    add_test(
    	NAME runUnitTests
    	COMMAND runUnitTests
    )

Note that I have chosen to link against gtest_main instead of providing the main at the end of the cpp file as I believe this will allow me to scale testing up more easily to multiple files.

When building the generated .sln file (in Visual C++ 2010 Express) I unfortunately get a long list of errors of the form

    2&gt;msvcprtd.lib(MSVCP100D.dll) : error LNK2005: &quot;public: virtual __thiscall std::basic_iostream&lt;char,struct std::char_traits&lt;char&gt; &gt;::~basic_iostream&lt;char,struct std::char_traits&lt;char&gt; &gt;(void)&quot; (??1?$basic_iostream@DU?$char_traits@D@std@@@std@@UAE@XZ) already defined in gtestd.lib(gtest-all.obj)

which I think means that I&#39;m not successfully linking to the gtest libraries. I have made sure that when linking against the debug libraries, I have then tried to build in debug mode.


**EDIT**

Having done some more digging, I think my issue is something to do with the type of library I am building gtest into. When building gtest with CMake, if `BUILD_SHARED_LIBS` is un-checked, and I link my program against these .lib files I get the errors mentioned above. However, if `BUILD_SHARED_LIBS` is checked then I produce a set of .lib and .dll files. When now linking against these .lib files the program compiles, but when run complains that it can&#39;t find gtest.dll.

What are the differences between a `SHARED` and a not `SHARED` library, and if I choose not shared, why doesn&#39;t it work? Is there an option in the CMakeLists.txt for my project that I am missing?



  [1]: https://github.com/google/googletest/blob/master/googletest/docs/primer.md
  [2]: http://www.ibm.com/developerworks/aix/library/au-googletestingframework.html?ca=drs-
  [3]: https://stackoverflow.com/a/4222169/769220
  [4]: https://stackoverflow.com/a/5901489/769220


How to start working with GTest and CMake

I try to set a preprocessor macro in the command line of CMake. I&#39;ve tried:

    set generator=&quot;Visual Studio 8 2005&quot;
    set params=-D MY_MACRO=1
    cmake.exe -G %generator% %params% ..\some_project

but it&#39;s neither defined when I compile nor can I find the name `MY_MACRO` in the files generated by CMake at all, except for `CMakeCache.txt` where it&#39;s present in the form:

    MY_MACRO:UNINITIALIZED=1

How can I do it?

How to define a C++ preprocessor macro through the command line with CMake?

I wrote a `CMakeLists.txt` for a project in **C++**, which uses **OpenCV** libraries. When I try to create the project using cmake, I get the next configuration problem:


    CMake Error at CMakeLists.txt:15 (find_package):
      Could not find module FindOpenCV.cmake or a configuration file for package
      OpenCV.
    
      Adjust CMAKE_MODULE_PATH to find FindOpenCV.cmake or set OpenCV_DIR to the
      directory containing a CMake configuration file for OpenCV.  The file will
      have one of the following names:
    
        OpenCVConfig.cmake
        opencv-config.cmake

The fact is that I have an environment variable for the path which I use in Visual Studio with no problems. If I don&#39;t include OpenCV, then I can configure and generate with no problem, but I need to solve the problem. I don&#39;t understand why cmake cannot find the OpenCV path or how to fix it.

I also used the recommendations mentioned in this link:
[FindOpenCV.cmake][1]

Does anybody had this problem too?


  [1]: http://opencv.willowgarage.com/wiki/FindOpenCV.cmake

Content Type	Original Author	Original Content on Stackoverflow
Question	Vivek Goel	View Question on Stackoverflow
Solution 1 - Cmake	DLRdave	View Answer on Stackoverflow
Solution 2 - Cmake	arrowd	View Answer on Stackoverflow

CMAKE add sub-directory which is not sub-directory on real directory

Cmake Problem Overview

Cmake Solutions

Solution 1 - Cmake

Solution 2 - Cmake

Convert a String to a byte array and then back to the original String

When should I not use a semicolon?

Attributions