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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Is there any reason, why including just this header is not enough? Maybe some required definitions missing?<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">CMake checks includes by compiling a simple program that does nothing. If compilation fails, the header is assumed not to exist. Those CMake flags can be helpful
in diagnosing the issue:<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"> --debug-trycompile = Do not delete the try_compile build tree.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"> Only useful on one try_compile at a time.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"> --debug-output = Put cmake in a debug mode.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"> --trace = Put cmake in trace mode.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="PL" style="font-size:11.0pt;font-family:"Courier New";color:#1F497D">--<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="PL" style="font-size:11.0pt;font-family:"Courier New";color:#1F497D">Gruesse,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="PL" style="font-size:11.0pt;font-family:"Courier New";color:#1F497D">Jakub</span><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
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<p class="MsoNormal"><b><span lang="EN-US" style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">From:</span></b><span lang="EN-US" style="font-size:10.0pt;font-family:"Tahoma","sans-serif""> CMake [mailto:cmake-bounces@cmake.org]
<b>On Behalf Of </b>Oliver<br>
<b>Sent:</b> Dienstag, 18. Februar 2014 22:11<br>
<b>To:</b> cmake@cmake.org<br>
<b>Subject:</b> [CMake] Check header file woos<o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">All,<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">I am trying to use CheckIncludeFiles for header file check. I know the file I want to check is located at /usr/include/lustre, so I supplied the following:<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">include(CheckIncludeFiles)<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">check_include_files("lustre/lustre_user.h" HAVE_LUSTRE_USER_H)<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">And it report can't find. Then I tried to be explicit about it<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">set(CMAKE_REQUIRED_INCLUDES /usr/include/lustre)<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">Still no avail. If I check any other header file in that directory, say "sys/io.h", it will work as expected. I am puzzled ... anything I missed?<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">Thanks<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><o:p> </o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">-- <br>
Oliver <o:p></o:p></p>
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