Cobalt crash at start with font issue

Question

When run cobalt, it will crash as follows, it seemed there need some font files, so what fonts does it need and where to put them?:

Caught signal: SIGSEGV(11)
SkFontMgr_CobaltDefaultFont() [0xcc6204]
SkFontMgr_CobaltDefaultFont() [0xcc6204]
SkFontMgr_CobaltDefaultFont() [0xcc6204]
SkFontMgr_CobaltDefaultFont() [0xcc6204]
SkFontMgr_CobaltDefaultFont() [0xcc6204]
SkFontMgr_CobaltDefaultFont() [0xcc6204]
SkFontMgr_CobaltDefaultFont() [0xcc6204]
.....

Answer 1

You can check the backtrace of crash, and you will find it need to get the font from content/data/fonts when you run Cobalt, and content/data/fonts is created after building done Cobalt in the out/linux-x11directfb_qa/content/data/fonts(x11 directfb build), so you need to copy the whole content file from out/linux-x11directfb_qa/ to the place where your cobalt binary laid.

https://cobalt.googlesource.com/cobalt/+/e9b4b99dab6e774b8b6e63add74c352cc5dd395a/src/starboard/linux/shared/system_get_path.cc

bool SbSystemGetPath(SbSystemPathId path_id, char* out_path, int path_size) {
  if (!out_path || !path_size) {
    return false;
  }
  const int kPathSize = PATH_MAX;
  char path[kPathSize];
  path[0] = '\0';
  switch (path_id) {
    case kSbSystemPathContentDirectory: {
      if (!GetExecutableDirectory(path, kPathSize)) {
        return false;
      }
      if (SbStringConcat(path, "/content/data", kPathSize) >= kPathSize) {
        return false;
      }
      break;
    }