Trying to build qt, I just had the same problem; it fails with the following messages (building on only one core to actually see the error message):
[629/10115] CC obj/src/3rdparty/chromium/net/third_party/nss/ssl/libssl.sslver.o FAILED: cd ../../../src/3rdparty/chromium/content/browser/service_worker; python ../../../tools/protoc_wrapper/protoc_wrapper.py --include "" --protobuf "../../../../../../src/core/Release/gen/protoc_out/content/browser/service_worker/service_worker_database.pb.h" --proto-in-dir . --proto-in-file "service_worker_database.proto" "--use-system-protobuf=0" -- ../../../../../../src/core/Release/protoc --cpp_out ../../../../../../src/core/Release/gen/protoc_out/content/browser/service_worker --python_out ../../../../../../src/core/Release/pyproto/content/browser/service_worker ../../../../../../src/core/Release/protoc: error while loading shared libraries: libgcc_s.so.1: cannot open shared object file: No such file or directory ninja: build stopped: subcommand failed. Makefile.gyp_run:712: recipe for target 'invoke_ninja' failed make[4]: *** [invoke_ninja] Error 1 make[4]: Leaving directory '/tmp/nix-build-qt-5.4.1.drv-0/qt-everywhere-opensource-src-5.4.1/qtwebengine/src/core' Makefile:63: recipe for target 'sub-gyp_run-pro-make_first' failed make[3]: *** [sub-gyp_run-pro-make_first] Error 2 make[3]: Leaving directory '/tmp/nix-build-qt-5.4.1.drv-0/qt-everywhere-opensource-src-5.4.1/qtwebengine/src/core' Makefile:48: recipe for target 'sub-core-make_first' failed make[2]: *** [sub-core-make_first] Error 2 make[2]: Leaving directory '/tmp/nix-build-qt-5.4.1.drv-0/qt-everywhere-opensource-src-5.4.1/qtwebengine/src' Makefile:44: recipe for target 'sub-src-make_first' failed make[1]: *** [sub-src-make_first] Error 2 make[1]: Leaving directory '/tmp/nix-build-qt-5.4.1.drv-0/qt-everywhere-opensource-src-5.4.1/qtwebengine' Makefile:745: recipe for target 'module-qtwebengine-make_first' failed make: *** [module-qtwebengine-make_first] Error 2 phase `build' failed after 11389 seconds Andreas
