<div dir="ltr">Are you trying to construct a BUILD_COMMAND line that looks like CXXFLAGS=-g -02 -w && ./configure?<br><div><br></div><div>If so, you should be able to do that with the CMake -E env command option like this ( Starting in CMake 3.1 ):</div><div><br></div><div><div>set(cxx_flags "-g -O2 -w")</div><div>set(command_to_run ${CMAKE_COMMAND} -E environment)</div><div>ExternalProject_Add(MyProject</div><div>   DOWNLOAD_COMMAND ""</div><div>   CONFIGURE_COMMAND ""</div><div>   BUILD_COMMAND ${CMAKE_COMMAND} -E env CXXFLAGS=${cxx_flags} ${command_to_run}</div><div>   )</div></div><div><br></div></div><div class="gmail_extra"><br><div class="gmail_quote">On Sat, Apr 21, 2018 at 10:39 PM, Andrew Brownsword <span dir="ltr"><<a href="mailto:andrew.e.brownsword@gmail.com" target="_blank">andrew.e.brownsword@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">I’m using the externalproject_add command to build a non-cmake project.  To the build I am passing CXXFLAGS=value, but I cannot manage to get any spaces into the value no matter how I quote, use variables, use escapes, etc.  Searching turns up other people with the same problem and no particularly good solutions.  One example was to use cmake_command -E echo to create a wrapper script that contains the desired string, however this isn’t working for me either (its seems to behave as if the cmake_command variable is empty or undefined).  This seems WAY harder than it should be...<br>
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