<div><p style="margin: 0px 0px 12px; padding: 0px; border: 0px; font-family: 'Segoe UI', 'Segoe UI Web Regular', 'Segoe UI Symbol', Lato, 'Helvetica Neue', Helvetica, Arial, sans-serif; font-size: 13px; font-variant-ligatures: normal; orphans: 2; widows: 2;"><strong style="margin-top: 0px;">System Information</strong><br>macOS 10.12.3 xcode 8.2.1</p><p style="margin: 0px 0px 12px; padding: 0px; border: 0px; font-family: 'Segoe UI', 'Segoe UI Web Regular', 'Segoe UI Symbol', Lato, 'Helvetica Neue', Helvetica, Arial, sans-serif; font-size: 13px; font-variant-ligatures: normal; orphans: 2; widows: 2;"><strong style="margin-top: 0px;">Blender Version</strong><br>Blender2.8 branch</p><p style="margin: 0px 0px 12px; padding: 0px; border: 0px; font-family: 'Segoe UI', 'Segoe UI Web Regular', 'Segoe UI Symbol', Lato, 'Helvetica Neue', Helvetica, Arial, sans-serif; font-size: 13px; font-variant-ligatures: normal; orphans: 2; widows: 2;"><strong style="margin-top: 0px;">Short description of error</strong><br>use command make to compile Blender2.8branch in console, error report not find 'mutex' I think this is need set cxx to c++11 feature</p><p style="margin: 0px 0px 12px; padding: 0px; border: 0px; font-family: 'Segoe UI', 'Segoe UI Web Regular', 'Segoe UI Symbol', Lato, 'Helvetica Neue', Helvetica, Arial, sans-serif; font-size: 13px; font-variant-ligatures: normal; orphans: 2; widows: 2;"><strong style="margin-top: 0px;">Exact steps for others to reproduce the error</strong><br>when I add set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++11")<br>to cmakefile in gpu folder, make again, error report :</p><div class="remarkup-code-block" data-code-lang="text" data-sigil="remarkup-code-block" style="margin: 12px 0px; padding: 0px; border: 0px; white-space: pre; font-family: 'Segoe UI', 'Segoe UI Web Regular', 'Segoe UI Symbol', Lato, 'Helvetica Neue', Helvetica, Arial, sans-serif; font-size: 13px; font-variant-ligatures: normal; orphans: 2; widows: 2;"><pre class="remarkup-code" style="margin-top: 0px; margin-bottom: 0px; padding: 12px; border: 0px; background-color: rgba(71, 87, 120, 0.0784314); overflow: auto; border-top-left-radius: 3px; border-top-right-radius: 3px; border-bottom-right-radius: 3px; border-bottom-left-radius: 3px; font-variant-ligatures: normal; font-variant-position: normal; font-variant-numeric: normal; font-variant-alternates: normal; font-variant-east-asian: normal; font-size: 11px; line-height: 15px; font-family: Menlo, Consolas, Monaco, monospace; background-position: initial initial; background-repeat: initial initial;"> Building C object source/blender/gpu/CMakeFiles/bf_gpu.dir/gawain/imm_util.c.o
/Volumes/HD-PNTU3/Blenderdev/blender/source/blender/gpu/gawain/buffer_id.cpp:13:10: fatal error:
'mutex' file not found
#include <mutex></pre></div><p style="margin: 0px; padding: 0px; border: 0px; font-family: 'Segoe UI', 'Segoe UI Web Regular', 'Segoe UI Symbol', Lato, 'Helvetica Neue', Helvetica, Arial, sans-serif; font-size: 13px; font-variant-ligatures: normal; orphans: 2; widows: 2;">don't know why this flag can't effect this file compile process.</p></div>