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POProblem with using Cmake in sub directories after once using cmake on the entire project
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  1. POProblem with using Cmake in sub directories after once using cmake on the entire project
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    copied!<p>I have a head folder called Tutorial and sub folder called MathFunctions each having one code each I wrote CMakeLists.txt for both the folders and used cmake in cmd promptand it is working fine.</p> <p>CMakeLists.txt in head folder has the following:</p> <pre><code>CMAKE_MINIMUM_REQUIRED ( VERSION 2.6) PROJECT (Tutorial) SET (Tutorial_VERSION_MAJOR 1) SET (Tutorial_VERSION_MINOR 0) CONFIGURE_FILE ( "${PROJECT_SOURCE_DIR}/TutorialConfig.h.in" "${PROJECT_BINARY_DIR}/TutorialConfig.h " ) INCLUDE_DIRECTORIES ("${PROJECT_BINARY_DIR}") OPTION (USE_MYMATH "Use tutorial provided math implementation" ON) if (USE_MYMATH) INCLUDE_DIRECTORIES ("${PROJECT_SOURCE_DIR}/MathFunctions") ADD_SUBDIRECTORY (MathFunctions) SET (EXTRA_LIBS ${EXTRA_LIBS} MathFunctions) endif (USE_MYMATH) ADD_EXECUTABLE (Tutorial tutorial.c) TARGET_LINK_LIBRARIES (Tutorial ${EXTRA_LIBS}) </code></pre> <p>CMakeLists.txt in sub folder has the following:</p> <pre><code>CMAKE_MINIMUM_REQUIRED ( VERSION 2.6) add_library (MathFunctions mysqrt.c ) </code></pre> <p>and in command prompt :</p> <pre><code>C:\home\Tutorial\BUILD&gt;cmake .. -- Building for: Visual Studio 9 2008 -- Check for working C compiler using: Visual Studio 9 2008 -- Check for working C compiler using: Visual Studio 9 2008 -- -- Detecting C compiler ABI info -- Detecting C compiler ABI info - done -- Check for working CXX compiler using: Visual Studio 9 2008 -- Check for working CXX compiler using: Visual Studio 9 2008 -- Detecting CXX compiler ABI info -- Detecting CXX compiler ABI info - done -- Configuring done -- Generating done -- Build files have been written to: C:/home/Tutorial/BUILD </code></pre> <p>Later I made some modifications in MathFunctions.c .I made no changes in Tutorial.c. So i want to re generate make files only for MathFunctions folder. But I am not able to do it. I am getting the following error</p> <pre><code>C:\home\Tutorial\BUILD&gt;cmake ../MathFunctions </code></pre> <p>CMake Error: The source "C:/home/Tutorial/MathFunctions/CMakeLists.txt" does not match the source "C:/home/Tutorial/CMakeLists.txt" used to generate cache. Re-run cmake with a different source directory.</p> <p>I cannot figure out why this error is coming. Please help Thanks</p>
 

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