On Mon, Jul 31 2017, Mateusz Lenik wrote: > On Mon, Jul 31, 2017 at 08:02:34PM +0000, Grant Edwards wrote: >> ../../third_party/vulkan-validation-layers/src/loader/debug_report.c:50:5: >> note: use option -std=c99, -std=gnu99, -std=c11 or -std=gnu11 to >> compile your code >> ../../third_party/vulkan-validation-layers/src/loader/debug_report.c: >> In function ‘util_CreateDebugReportCallbacks’: >> ../../third_party/vulkan-validation-layers/src/loader/debug_report.c:235:5: >> error: ‘for’ loop initial declarations are only allowed in C99 or >> C11 mode > > Most likely gcc-4.9 defaults to older C standard (C89, I guess). > The easiest way to solve this would be to update your gcc to 5.4, > otherwise you'd have to pass one of the suggested flags to the compiler > somehow.
gcc-config -l reports [1] x86_64-pc-linux-gnu-4.9.3 [2] x86_64-pc-linux-gnu-4.9.4 * [3] x86_64-pc-linux-gnu-5.4.0 The news item from 2015-10-22 suggests (I have gentoolkit-0.3.3) # revdep-rebuild --library 'libstdc++.so.6' -- --exclude gcc Is that the entire procedure needed? In particular, ignoring performance, can I avoid emerge --emptytree and just execute? # gcc-config x86_64-pc-linux-gnu-5.4.0 # revdep-rebuild --library 'libstdc++.so.6' -- --exclude gcc thanks, allan
