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1<html><head><meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"><title>Chapter FAQ.  Frequentry Asked Questions</title><link rel="stylesheet" href="../xml/XSLCustomizationLayer/G4HTMLStylesheet.css" type="text/css"><meta name="generator" content="DocBook XSL Stylesheets V1.71.1"><link rel="start" href="index.html" title="Geant4 User's Guide for Application Developers"><link rel="up" href="index.html" title="Geant4 User's Guide for Application Developers"><link rel="prev" href="ch09s03.html" title="9.3.  Advanced Examples"><link rel="next" href="ch10s02.html" title="FAQ.2.  Run Time Problems"><script language="JavaScript">
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8</script></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Chapter FAQ. 
9Frequentry Asked Questions
10</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="ch09s03.html"><img src="AllResources/IconsGIF/prev.gif" alt="Prev"></a> </td><th width="60%" align="center"> </th><td width="20%" align="right"> <a accesskey="n" href="ch10s02.html"><img src="AllResources/IconsGIF/next.gif" alt="Next"></a></td></tr></table><hr></div><div class="chapter" lang="en"><div class="titlepage"><div><div><h2 class="title"><a name="chap.FAQ"></a>Chapter FAQ. 
11Frequentry Asked Questions
12</h2></div></div></div><div class="section" lang="en"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="qanda.Installation"></a>FAQ.1. 
13Installation
14</h2></div></div></div><div class="qandaset"><table border="0" summary="Q and A Set"><col align="left" width="1%"><tbody><tr class="question"><td align="left" valign="top"><a name="qanda.Installation.UpkTar"></a><a name="id553047"></a><b>Q:</b></td><td align="left" valign="top"><p>
15 When I download the source from the web, and unpack the tar file,
16 some files unpack into the top level directory.
17</p></td></tr><tr class="answer"><td align="left" valign="top"><b>A:</b></td><td align="left" valign="top"><p>
18 The problem you describe usually is the result of using "UNIX" tar to
19 unpack the gtar ("GNU-tar") file, or vice versa, or using zip on either
20 the gtar or tar file. Please make certain that you download the correct
21 file for your system, and that you use the correct unpacking tool.
22 Note that for Linux you must download the gtar.gz file.
23</p></td></tr><tr class="question"><td align="left" valign="top"><a name="qanda.Installation.NoCLHEP"></a><a name="id553070"></a><b>Q:</b></td><td align="left" valign="top"><p>
24 I cannot find CLHEP files or library and I have it installed in my system.
25</p></td></tr><tr class="answer"><td align="left" valign="top"><b>A:</b></td><td align="left" valign="top"><p>
26 If the standard CLHEP installation procedure has been adopted, the variable
27 <code class="literal">CLHEP_BASE_DIR</code> should point to the area where
28 <code class="literal">include/</code> and <code class="literal">lib/</code> directories for
29 CLHEP headers &amp; library are installed in your system. In case the library
30 file name is different than the one expected (<code class="literal">libCLHEP.a</code>),
31 you should either create a symbolic link with the expected name, or define
32 the variable <code class="literal">CLHEP_LIB</code> in your environment which
33 explicitly sets the name of the CLHEP library. If a non-standard CLHEP
34 installation has been adopted, define variables
35 <code class="literal">CLHEP_INCLUDE_DIR</code>, <code class="literal">CLHEP_LIB_DIR</code>
36 (and <code class="literal">CLHEP_LIB</code>) to refer explicitly to the place where
37 headers, library (and library-name) respectively are placed in your system.
38 On Windows systems, the full library file name (with extension) should be
39 specified as <code class="literal">CLHEP_LIB</code>, while for UNIX-like systems,
40 just the name is required (i.e. <code class="literal">CLHEP</code> for
41 <code class="literal">libCLHEP.a</code>).
42</p></td></tr><tr class="question"><td align="left" valign="top"><a name="qanda.Installation.noCERNLib"></a><a name="id553161"></a><b>Q:</b></td><td align="left" valign="top"><p>
43 While installing the Geant4 libraries I get the following message printed:
44
45 </p><div class="informalexample"><pre class="programlisting">
46 gmake[1]: cernlib: Command not found
47 </pre></div><p>
48
49 Has Geant4 been installed properly ? What to do to solve this error ?
50</p></td></tr><tr class="answer"><td align="left" valign="top"><b>A:</b></td><td align="left" valign="top"><p>
51 The message:
52 </p><div class="informalexample"><pre class="programlisting">
53 gmake[1]: cernlib: Command not found
54 </pre></div><p>
55
56 shows that you don't have the 'cernlib' command installed in your system;
57 'cernlib' is a command from the CERN program library (cernlib) returning a
58 list of libraries needed to link a cernlib application. This command is only
59 used in the 'g3tog4' module, however, if you do not make use of the 'g3tog4'
60 tool, it's harmless. The cernlib script (and the needed cernlib libraries)
61 are available from: http://cern.ch/cernlib.
62</p></td></tr><tr class="question"><td align="left" valign="top"><a name="qanda.Installation.FileDepend"></a><a name="id553200"></a><b>Q:</b></td><td align="left" valign="top"><p>
63 Trying building the Geant4 libraries I see several of these errors appearing
64 and my installation fails:
65 </p><div class="informalexample"><pre class="programlisting">
66 .....G4Exception.d:1: *** missing separator. Stop.
67 ...../G4DalitzDecayChannel.d:1: *** missing separator. Stop.
68 :
69 :
70 </pre></div><p>
71 Has Geant4 been installed properly ? What to do to solve this error ?
72</p></td></tr><tr class="answer"><td align="left" valign="top"><b>A:</b></td><td align="left" valign="top"><p>
73 It looks like some file dependencies (.d) are corrupted, possibly due
74 to previous build attempts which failed for some reason.
75 You need to remove each of them. A quick recipe for doing this is to:
76 </p><div class="itemizedlist"><ul type="disc" compact><li><p>
77 Configure the environment with the installation to be repaired
78 </p></li><li><p>
79 Unset the G4WORKDIR environment variable (in case it is eventually set)
80 </p></li><li><p>
81 Type:
82 </p><div class="informalexample"><pre class="programlisting">
83 gmake clean dependencies=''
84 </pre></div><p>
85
86 from the affected module (i.e. for this case, from
87 $G4INSTALL/source/global/management and $G4INSTALL/source/particles/management)
88 and rebuild. Alternatively, you may use:
89 </p><div class="informalexample"><pre class="programlisting">
90 gmake clean dependencies=''
91 </pre></div><p>
92
93 from $G4INSTALL/source and rebuild.
94 </p></li></ul></div><p>
95</p></td></tr></tbody></table></div></div></div><div class="navfooter"><hr><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="ch09s03.html"><img src="AllResources/IconsGIF/prev.gif" alt="Prev"></a> </td><td width="20%" align="center"> </td><td width="40%" align="right"> <a accesskey="n" href="ch10s02.html"><img src="AllResources/IconsGIF/next.gif" alt="Next"></a></td></tr><tr><td width="40%" align="left" valign="top">9.3. 
96Advanced Examples
97 </td><td width="20%" align="center"><a accesskey="h" href="index.html"><img src="AllResources/IconsGIF/home.gif" alt="Home"></a></td><td width="40%" align="right" valign="top"> FAQ.2. 
98Run Time Problems
99</td></tr></table></div></body></html>
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