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<p class="MsoNormal"><a name="_MailEndCompose"><o:p> </o:p></a></p>
<p class="MsoNormal"><span style="mso-bookmark:_MailEndCompose"><o:p> </o:p></span></p>
<span style="mso-bookmark:_MailEndCompose"></span>
<p class="MsoNormal">Hi,<o:p></o:p></p>
<p class="MsoNormal">I’m posting this after getting no useful reply in StackOverflow:
<a href="https://stackoverflow.com/questions/50198141/cmake-custom-target-doesnt-build">
https://stackoverflow.com/questions/50198141/cmake-custom-target-doesnt-build</a>.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal" style="margin-bottom:12.0pt;background:white;vertical-align:baseline">
<span style="font-size:11.5pt;font-family:"Arial",sans-serif;color:#242729">Using CMake 2.8.8, I'm building two targets using:<o:p></o:p></span></p>
<p class="MsoNormal" style="background:#EFF0F1;vertical-align:baseline"><span style="font-size:10.0pt;font-family:Consolas;color:#242729;border:none windowtext 1.0pt;padding:0in;background:#EFF0F1">add_library(tgt1 SHARED a.cpp)<o:p></o:p></span></p>
<p class="MsoNormal" style="background:#EFF0F1;vertical-align:baseline"><span style="font-size:10.0pt;font-family:Consolas;color:#242729;border:none windowtext 1.0pt;padding:0in;background:#EFF0F1">add_library(tgt2 SHARED b.cpp)<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-bottom:12.0pt;background:white;vertical-align:baseline">
<span style="font-size:11.5pt;font-family:"Arial",sans-serif;color:#242729">After both are built, I need to run a post build step that depends on both targets. I tried many combinations of the following but with no success:<o:p></o:p></span></p>
<p class="MsoNormal" style="background:#EFF0F1;vertical-align:baseline"><span style="font-size:10.0pt;font-family:Consolas;color:#242729;border:none windowtext 1.0pt;padding:0in;background:#EFF0F1">add_custom_target(final_tgt DEPENDS tgt1 tgt2)<o:p></o:p></span></p>
<p class="MsoNormal" style="background:#EFF0F1;vertical-align:baseline"><span style="font-size:10.0pt;font-family:Consolas;color:#242729;border:none windowtext 1.0pt;padding:0in;background:#EFF0F1">add_custom_command(TARGET final_tgt POST_BUILD COMMAND <command>
ARGS <args>)<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-bottom:12.0pt;background:white;vertical-align:baseline">
<span style="font-size:11.5pt;font-family:"Arial",sans-serif;color:#242729">The final target would simply not build, even though its build.make contains the custom command.<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-bottom:12.0pt;background:white;vertical-align:baseline">
<span style="font-size:11.5pt;font-family:"Arial",sans-serif;color:#242729">Tried to use ALL for the custom target, however make attempts to build it first while missing the first targets.<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-bottom:12.0pt;background:white;vertical-align:baseline">
<span style="font-size:11.5pt;font-family:"Arial",sans-serif;color:#242729">And I can't use an add_library or add_executable for the final target, since they require specifying source files.<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-bottom:12.0pt;background:white;vertical-align:baseline">
<span style="font-size:11.5pt;font-family:"Arial",sans-serif;color:#242729">What is the correct way to do it?<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-bottom:12.0pt;background:white;vertical-align:baseline">
<span style="font-size:11.5pt;font-family:"Arial",sans-serif;color:#242729">===================================<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-bottom:12.0pt;background:white;vertical-align:baseline">
<span style="font-size:11.5pt;font-family:"Arial",sans-serif;color:#242729">Edit: below is a minimal verifiable source code. What it attempts to do is to compile code (for Mac) in two architectures and as a post-build to create a universal binary using lipo:<o:p></o:p></span></p>
<p class="MsoNormal" style="background:#EFF0F1;vertical-align:baseline"><span style="font-size:10.0pt;font-family:Consolas;color:#242729;border:none windowtext 1.0pt;padding:0in;background:#EFF0F1">cmake_minimum_required(VERSION 2.8)<o:p></o:p></span></p>
<p class="MsoNormal" style="background:#EFF0F1;vertical-align:baseline"><span style="font-size:10.0pt;font-family:Consolas;color:#242729;border:none windowtext 1.0pt;padding:0in;background:#EFF0F1">set(icpc_req_path "/usr/local/bin/icpc-16.0.146")<o:p></o:p></span></p>
<p class="MsoNormal" style="background:#EFF0F1;vertical-align:baseline"><span style="font-size:10.0pt;font-family:Consolas;color:#242729;border:none windowtext 1.0pt;padding:0in;background:#EFF0F1"><o:p> </o:p></span></p>
<p class="MsoNormal" style="background:#EFF0F1;vertical-align:baseline"><span style="font-size:10.0pt;font-family:Consolas;color:#242729;border:none windowtext 1.0pt;padding:0in;background:#EFF0F1">set(CMAKE_CXX_COMPILER "${icpc_req_path}")<o:p></o:p></span></p>
<p class="MsoNormal" style="background:#EFF0F1;vertical-align:baseline"><span style="font-size:10.0pt;font-family:Consolas;color:#242729;border:none windowtext 1.0pt;padding:0in;background:#EFF0F1"><o:p> </o:p></span></p>
<p class="MsoNormal" style="background:#EFF0F1;vertical-align:baseline"><span style="font-size:10.0pt;font-family:Consolas;color:#242729;border:none windowtext 1.0pt;padding:0in;background:#EFF0F1">project("CMakeTest")<o:p></o:p></span></p>
<p class="MsoNormal" style="background:#EFF0F1;vertical-align:baseline"><span style="font-size:10.0pt;font-family:Consolas;color:#242729;border:none windowtext 1.0pt;padding:0in;background:#EFF0F1">set(SOURCE_FILES a.cpp)<o:p></o:p></span></p>
<p class="MsoNormal" style="background:#EFF0F1;vertical-align:baseline"><span style="font-size:10.0pt;font-family:Consolas;color:#242729;border:none windowtext 1.0pt;padding:0in;background:#EFF0F1"><o:p> </o:p></span></p>
<p class="MsoNormal" style="background:#EFF0F1;vertical-align:baseline"><span style="font-size:10.0pt;font-family:Consolas;color:#242729;border:none windowtext 1.0pt;padding:0in;background:#EFF0F1">set (TARGET_NAME "TGT")<o:p></o:p></span></p>
<p class="MsoNormal" style="background:#EFF0F1;vertical-align:baseline"><span style="font-size:10.0pt;font-family:Consolas;color:#242729;border:none windowtext 1.0pt;padding:0in;background:#EFF0F1">set(TARGETS "")<o:p></o:p></span></p>
<p class="MsoNormal" style="background:#EFF0F1;vertical-align:baseline"><span style="font-size:10.0pt;font-family:Consolas;color:#242729;border:none windowtext 1.0pt;padding:0in;background:#EFF0F1">set(ARCHITECTURES i386 x86_64)<o:p></o:p></span></p>
<p class="MsoNormal" style="background:#EFF0F1;vertical-align:baseline"><span style="font-size:10.0pt;font-family:Consolas;color:#242729;border:none windowtext 1.0pt;padding:0in;background:#EFF0F1"><o:p> </o:p></span></p>
<p class="MsoNormal" style="background:#EFF0F1;vertical-align:baseline"><span style="font-size:10.0pt;font-family:Consolas;color:#242729;border:none windowtext 1.0pt;padding:0in;background:#EFF0F1">foreach(ar ${ARCHITECTURES})<o:p></o:p></span></p>
<p class="MsoNormal" style="background:#EFF0F1;vertical-align:baseline"><span style="font-size:10.0pt;font-family:Consolas;color:#242729;border:none windowtext 1.0pt;padding:0in;background:#EFF0F1"> set(CMAKE_CXX_FLAGS_RELEASE "")<o:p></o:p></span></p>
<p class="MsoNormal" style="background:#EFF0F1;vertical-align:baseline"><span style="font-size:10.0pt;font-family:Consolas;color:#242729;border:none windowtext 1.0pt;padding:0in;background:#EFF0F1"> set(CMAKE_CXX_FLAGS_DEBUG "")<o:p></o:p></span></p>
<p class="MsoNormal" style="background:#EFF0F1;vertical-align:baseline"><span style="font-size:10.0pt;font-family:Consolas;color:#242729;border:none windowtext 1.0pt;padding:0in;background:#EFF0F1"> set(CMAKE_CXX_FLAGS "")<o:p></o:p></span></p>
<p class="MsoNormal" style="background:#EFF0F1;vertical-align:baseline"><span style="font-size:10.0pt;font-family:Consolas;color:#242729;border:none windowtext 1.0pt;padding:0in;background:#EFF0F1"><o:p> </o:p></span></p>
<p class="MsoNormal" style="background:#EFF0F1;vertical-align:baseline"><span style="font-size:10.0pt;font-family:Consolas;color:#242729;border:none windowtext 1.0pt;padding:0in;background:#EFF0F1"> add_library(TGT_${ar} SHARED ${SOURCE_FILES})<o:p></o:p></span></p>
<p class="MsoNormal" style="background:#EFF0F1;vertical-align:baseline"><span style="font-size:10.0pt;font-family:Consolas;color:#242729;border:none windowtext 1.0pt;padding:0in;background:#EFF0F1"> set_target_properties(${TARGET_NAME}_${ar} PROPERTIES COMPILE_FLAGS
"-arch ${ar} -xSSE3")<o:p></o:p></span></p>
<p class="MsoNormal" style="background:#EFF0F1;vertical-align:baseline"><span style="font-size:10.0pt;font-family:Consolas;color:#242729;border:none windowtext 1.0pt;padding:0in;background:#EFF0F1"> set_target_properties(${TARGET_NAME}_${ar} PROPERTIES LINK_FLAGS
"-arch ${ar}")<o:p></o:p></span></p>
<p class="MsoNormal" style="background:#EFF0F1;vertical-align:baseline"><span style="font-size:10.0pt;font-family:Consolas;color:#242729;border:none windowtext 1.0pt;padding:0in;background:#EFF0F1"> set(TARGETS "${TARGETS};lib${TARGET_NAME}_${ar}.dylib")<o:p></o:p></span></p>
<p class="MsoNormal" style="background:#EFF0F1;vertical-align:baseline"><span style="font-size:10.0pt;font-family:Consolas;color:#242729;border:none windowtext 1.0pt;padding:0in;background:#EFF0F1">endforeach(ar)<o:p></o:p></span></p>
<p class="MsoNormal" style="background:#EFF0F1;vertical-align:baseline"><span style="font-size:10.0pt;font-family:Consolas;color:#242729;border:none windowtext 1.0pt;padding:0in;background:#EFF0F1"><o:p> </o:p></span></p>
<p class="MsoNormal" style="background:#EFF0F1;vertical-align:baseline"><span style="font-size:10.0pt;font-family:Consolas;color:#242729;border:none windowtext 1.0pt;padding:0in;background:#EFF0F1">message("Targets: ${TARGETS}")<o:p></o:p></span></p>
<p class="MsoNormal" style="background:#EFF0F1;vertical-align:baseline"><span style="font-size:10.0pt;font-family:Consolas;color:#242729;border:none windowtext 1.0pt;padding:0in;background:#EFF0F1">add_custom_target(${TARGET_NAME} DEPENDS ${TARGETS})<o:p></o:p></span></p>
<p class="MsoNormal" style="background:#EFF0F1;vertical-align:baseline"><span style="font-size:10.0pt;font-family:Consolas;color:#242729;border:none windowtext 1.0pt;padding:0in;background:#EFF0F1">add_custom_command(TARGET ${TARGET_NAME} POST_BUILD COMMAND
"lipo" ARGS "-create" ${TARGETS} "-output" "${TARGET_NAME}.dylib")<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-bottom:12.0pt;background:white;vertical-align:baseline">
<span style="font-size:11.5pt;font-family:"Arial",sans-serif;color:#242729"><o:p> </o:p></span></p>
<p class="MsoNormal" style="margin-bottom:12.0pt;background:white;vertical-align:baseline">
<span style="font-size:11.5pt;font-family:"Arial",sans-serif;color:#242729">And the contents of a.cpp is:<o:p></o:p></span></p>
<p class="MsoNormal" style="background:#EFF0F1;vertical-align:baseline"><span style="font-size:10.0pt;font-family:Consolas;color:#242729;border:none windowtext 1.0pt;padding:0in;background:#EFF0F1">int main(){}</span><span style="font-size:10.0pt;font-family:Consolas;color:#242729"><o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Thanks,<o:p></o:p></p>
<p class="MsoNormal">Gil.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
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