'[CMake] How to Redirect Output and Ignore Command Failures'

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List: cmake
Subject: [CMake] How to Redirect Output and Ignore Command Failures
From: "Mike Howells" <mike.howells () smartsgroup ! com>
Date: 2009-08-31 2:52:53
Message-ID: 3F1F0F58C1AB3449B46F78B6F106D186038E091E () 34093-C6-EVS1 ! exchange ! rackspace ! com
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I'm creating a custom target to get XML output from my Boost.test test
cases for use in Hudson, and I want the output for all tests to be
generated even if some fail. 

Unfortunately there are two blockers:
1.	cmake makes the first test case to fail stop the build.
2.	cmake offers no way to redirect output and using ">" doesn't
seem to work.

Is there a way to tell cmake to:
1.	Redirect output from a custom command?
2.	Ignore the return status from a custom command? 

Here's my CMakeLists.txt fragment, where exeFiles holds the list of test
case executables:

foreach(exeName ${exeFiles})
  list(APPEND xmlList ${exeName}.xml)
  add_custom_command(OUTPUT ${exeName}.xml
    COMMAND ${exeName} --output_format=XML --log_level=all
--report_level=no
      >${exeName}.xml VERBATIM)
endforeach()

add_custom_target(xmltest DEPENDS ${xmlList})

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I&#8217;m creating a custom target \
to get XML output from my Boost.test test cases for use in Hudson, and I want the \
output for all tests to be generated even if some fail.

<P DIR=LTR><SPAN LANG="en-us"><FONT FACE="Calibri">Unfortunately there are two \
blockers:</FONT></SPAN></P>

<P DIR=LTR><SPAN LANG="en-us"><FONT \
FACE="Calibri">1.&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</FONT></SPAN><SPAN \
LANG="en-us"></SPAN><SPAN LANG="en-us"></SPAN><SPAN LANG="en-us"> <FONT \
FACE="Calibri">cmake makes the first test case to fail stop the \
build.</FONT></SPAN></P>

<P DIR=LTR><SPAN LANG="en-us"><FONT \
FACE="Calibri">2.&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</FONT></SPAN><SPAN LANG="en-us"> \
<FONT FACE="Calibri">cmake offers no way to redirect output and using \
&#8220;&gt;&#8221; doesn&#8217;t seem to work.</FONT></SPAN><SPAN \
LANG="en-us"></SPAN></P>

<P DIR=LTR><SPAN LANG="en-us"></SPAN><SPAN LANG="en-us"></SPAN></P>

<P DIR=LTR><SPAN LANG="en-us"><FONT FACE="Calibri">Is there a way to tell cmake \
to:</FONT></SPAN></P>

<P DIR=LTR><SPAN LANG="en-us"><FONT \
FACE="Calibri">1.&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</FONT></SPAN><SPAN \
LANG="en-us"></SPAN><SPAN LANG="en-us"></SPAN><SPAN LANG="en-us"> <FONT \
FACE="Calibri">Redirect output from a custom command?</FONT></SPAN></P>

2.&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; \
Ignore the return status from a custom command? \

<P DIR=LTR><SPAN LANG="en-us"></SPAN><SPAN LANG="en-us"></SPAN></P>

<P DIR=LTR><SPAN LANG="en-us"><FONT FACE="Calibri">Here&#8217;s my CMakeLists.txt \
fragment, where exeFiles holds the list of test case executables:</FONT></SPAN></P>

<P DIR=LTR><SPAN LANG="en-us"></SPAN><SPAN LANG="en-us"></SPAN><SPAN \
LANG="en-us"><FONT COLOR="#000000" SIZE=2 FACE="Courier New">foreach(exeName \
${exeFiles})</FONT></SPAN></P>

<P DIR=LTR><SPAN LANG="en-us"><FONT COLOR="#000000" SIZE=2 FACE="Courier \
New">&nbsp;</FONT></SPAN><SPAN LANG="en-us"></SPAN><SPAN LANG="en-us"></SPAN><SPAN \
LANG="en-us"> <FONT COLOR="#000080" SIZE=2 FACE="Courier New">list</FONT></SPAN><SPAN \
LANG="en-us"></SPAN><SPAN LANG="en-us"></SPAN><SPAN LANG="en-us"><FONT \
COLOR="#000000" SIZE=2 FACE="Courier New">(APPEND xmlList</FONT></SPAN><SPAN \
LANG="en-us"></SPAN><SPAN LANG="en-us"></SPAN><SPAN LANG="en-us"> <FONT \
COLOR="#7F0055" SIZE=2 FACE="Courier New">${exeName}.xml</FONT></SPAN><SPAN \
LANG="en-us"></SPAN><SPAN LANG="en-us"></SPAN><SPAN LANG="en-us"><FONT \
COLOR="#000000" SIZE=2 FACE="Courier New">)</FONT></SPAN><SPAN \
LANG="en-us"></SPAN><SPAN LANG="en-us"></SPAN><SPAN LANG="en-us"></SPAN></P>

<P DIR=LTR><SPAN LANG="en-us"></SPAN><SPAN LANG="en-us"></SPAN><SPAN \
LANG="en-us"><FONT COLOR="#000000" SIZE=2 FACE="Courier \
New">&nbsp;</FONT></SPAN><SPAN LANG="en-us"></SPAN><SPAN LANG="en-us"></SPAN><SPAN \
LANG="en-us"> <FONT COLOR="#000080" SIZE=2 FACE="Courier \
New">add_custom_command</FONT></SPAN><SPAN LANG="en-us"></SPAN><SPAN \
LANG="en-us"></SPAN><SPAN LANG="en-us"><FONT COLOR="#000000" SIZE=2 FACE="Courier \
New">(OUTPUT</FONT></SPAN><SPAN LANG="en-us"></SPAN><SPAN LANG="en-us"></SPAN><SPAN \
LANG="en-us"> <FONT COLOR="#7F0055" SIZE=2 FACE="Courier \
New">${exeName}.xml</FONT></SPAN><SPAN LANG="en-us"></SPAN><SPAN \
LANG="en-us"></SPAN><SPAN LANG="en-us"></SPAN></P>

<P DIR=LTR><SPAN LANG="en-us"></SPAN><SPAN LANG="en-us"></SPAN><SPAN \
LANG="en-us"><FONT COLOR="#000000" SIZE=2 FACE="Courier New">&nbsp;&nbsp;&nbsp; \
COMMAND</FONT></SPAN><SPAN LANG="en-us"></SPAN><SPAN LANG="en-us"></SPAN><SPAN \
LANG="en-us"> <FONT COLOR="#7F0055" SIZE=2 FACE="Courier \
New">${exeName}</FONT></SPAN><SPAN LANG="en-us"></SPAN><SPAN \
LANG="en-us"></SPAN><SPAN LANG="en-us"><FONT COLOR="#000000" SIZE=2 FACE="Courier \
New"> --output_format=XML --log_level=all --report_level=no</FONT></SPAN><SPAN \
LANG="en-us"></SPAN><SPAN LANG="en-us"></SPAN><SPAN LANG="en-us"></SPAN></P>

<P DIR=LTR><SPAN LANG="en-us"></SPAN><SPAN LANG="en-us"></SPAN><SPAN \
LANG="en-us"><FONT COLOR="#000000" SIZE=2 FACE="Courier \
New">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &gt;</FONT></SPAN><SPAN LANG="en-us"></SPAN><SPAN \
LANG="en-us"></SPAN><SPAN LANG="en-us"><FONT COLOR="#7F0055" SIZE=2 FACE="Courier \
New">${exeName}.xml</FONT></SPAN><SPAN LANG="en-us"></SPAN><SPAN \
LANG="en-us"></SPAN><SPAN LANG="en-us"><FONT COLOR="#000000" SIZE=2 FACE="Courier \
New"> VERBATIM)</FONT></SPAN><SPAN LANG="en-us"></SPAN><SPAN \
LANG="en-us"></SPAN><SPAN LANG="en-us"></SPAN></P>

<P DIR=LTR><SPAN LANG="en-us"></SPAN><SPAN LANG="en-us"></SPAN><SPAN \
LANG="en-us"><FONT COLOR="#000080" SIZE=2 FACE="Courier \
New">endforeach</FONT></SPAN><SPAN LANG="en-us"></SPAN><SPAN \
LANG="en-us"></SPAN><SPAN LANG="en-us"><FONT COLOR="#000000" SIZE=2 FACE="Courier \
New">()</FONT></SPAN><SPAN LANG="en-us"></SPAN><SPAN LANG="en-us"></SPAN><SPAN \
LANG="en-us"></SPAN></P>

<P DIR=LTR><SPAN LANG="en-us"></SPAN><SPAN LANG="en-us"></SPAN><SPAN \
LANG="en-us"><FONT COLOR="#000080" SIZE=2 FACE="Courier \
New">add_custom_target</FONT></SPAN><SPAN LANG="en-us"></SPAN><SPAN \
LANG="en-us"></SPAN><SPAN LANG="en-us"><FONT COLOR="#000000" SIZE=2 FACE="Courier \
New">(xmltest DEPENDS</FONT></SPAN><SPAN LANG="en-us"></SPAN><SPAN \
LANG="en-us"></SPAN><SPAN LANG="en-us"> <FONT COLOR="#7F0055" SIZE=2 FACE="Courier \
New">${xmlList}</FONT></SPAN><SPAN LANG="en-us"></SPAN><SPAN \
LANG="en-us"></SPAN><SPAN LANG="en-us"><FONT COLOR="#000000" SIZE=2 FACE="Courier \
New">)</FONT></SPAN><SPAN LANG="en-us"></SPAN><SPAN LANG="en-us"></SPAN><SPAN \
LANG="en-us"></SPAN></P>

<P DIR=LTR><SPAN LANG="en-us"></SPAN></P>

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