[cmake] refactor: Use CPM over submodules (#143)

Transfers the majority of submodules and large externals to CPM, using source archives rather than full Git clones. Not only does this save massive amounts of clone and configure time, but dependencies are grabbed on-demand rather than being required by default. Additionally, CPM will (generally) automatically search for system dependencies, though certain dependencies have options to control this.

Testing shows gains ranging from 5x to 10x in terms of overall clone/configure time.

Reviewed-on: https://git.eden-emu.dev/eden-emu/eden/pulls/143
Reviewed-by: CamilleLaVey <camillelavey99@gmail.com>

1 files changed, 0 insertions, 110 deletions

diff --git a/externals/breakpad/src/processor/proc_maps_linux.cc b/externals/breakpad/src/processor/proc_maps_linux.cc
deleted file mode 100644
index 6fcb909a12..0000000000
--- a/externals/breakpad/src/processor/proc_maps_linux.cc
+++ /dev/null
@@ -1,110 +0,0 @@
-// Copyright 2013 Google LLC
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#ifndef __STDC_FORMAT_MACROS
-#define __STDC_FORMAT_MACROS
-#endif
-
-#ifdef HAVE_CONFIG_H
-#include <config.h>  // Must come first
-#endif
-
-#include "google_breakpad/processor/proc_maps_linux.h"
-
-#include <fcntl.h>
-#include <inttypes.h>
-#include <stdio.h>
-
-#include "common/using_std_string.h"
-#include "processor/logging.h"
-
-#if defined(OS_ANDROID) && !defined(__LP64__)
-// In 32-bit mode, Bionic's inttypes.h defines PRI/SCNxPTR as an
-// unsigned long int, which is incompatible with Bionic's stdint.h
-// defining uintptr_t as an unsigned int:
-// https://code.google.com/p/android/issues/detail?id=57218
-#undef SCNxPTR
-#define SCNxPTR "x"
-#endif
-
-namespace google_breakpad {
-
-bool ParseProcMaps(const string& input,
-                   std::vector<MappedMemoryRegion>* regions_out) {
-  std::vector<MappedMemoryRegion> regions;
-
-  // This isn't async safe nor terribly efficient, but it doesn't need to be at
-  // this point in time.
-
-  // Split the string by newlines.
-  std::vector<string> lines;
-  string l = "";
-  for (size_t i = 0; i < input.size(); i++) {
-    if (input[i] != '\n' && input[i] != '\r') {
-      l.push_back(input[i]);
-    } else if (l.size() > 0) {
-      lines.push_back(l);
-      l.clear();
-    }
-  }
-  if (l.size() > 0) {
-    BPLOG(ERROR) << "Input doesn't end in newline";
-    return false;
-  }
-
-  for (size_t i = 0; i < lines.size(); ++i) {
-    MappedMemoryRegion region;
-    const char* line = lines[i].c_str();
-    char permissions[5] = {'\0'};  // Ensure NUL-terminated string.
-    int path_index = 0;
-
-    // Sample format from man 5 proc:
-    //
-    // address           perms offset  dev   inode   pathname
-    // 08048000-08056000 r-xp 00000000 03:0c 64593   /usr/sbin/gpm
-    //
-    // The final %n term captures the offset in the input string, which is used
-    // to determine the path name. It *does not* increment the return value.
-    // Refer to man 3 sscanf for details.
-    if (sscanf(line, "%" SCNx64 "-%" SCNx64 " %4c %" SCNx64" %hhx:%hhx %"
-               SCNd64 " %n", &region.start, &region.end, permissions,
-               &region.offset, &region.major_device, &region.minor_device,
-               &region.inode, &path_index) < 7) {
-      BPLOG(ERROR) << "sscanf failed for line: " << line;
-      return false;
-    }
-
-    region.permissions = 0;
-
-    if (permissions[0] == 'r')
-      region.permissions |= MappedMemoryRegion::READ;
-    else if (permissions[0] != '-')
-      return false;
-
-    if (permissions[1] == 'w')
-      region.permissions |= MappedMemoryRegion::WRITE;
-    else if (permissions[1] != '-')
-      return false;
-
-    if (permissions[2] == 'x')
-      region.permissions |= MappedMemoryRegion::EXECUTE;
-    else if (permissions[2] != '-')
-      return false;
-
-    if (permissions[3] == 'p')
-      region.permissions |= MappedMemoryRegion::PRIVATE;
-    else if (permissions[3] != 's' && permissions[3] != 'S')  // Shared memory.
-      return false;
-
-    // Pushing then assigning saves us a string copy.
-    regions.push_back(region);
-    regions.back().path.assign(line + path_index);
-    regions.back().line.assign(line);
-  }
-
-  regions_out->swap(regions);
-  return true;
-}
-
-}  // namespace google_breakpad