[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, 246 deletions

diff --git a/externals/breakpad/src/common/linux/elfutils.cc b/externals/breakpad/src/common/linux/elfutils.cc
deleted file mode 100644
index 95b5db829e..0000000000
--- a/externals/breakpad/src/common/linux/elfutils.cc
+++ /dev/null
@@ -1,246 +0,0 @@
-// Copyright 2012 Google LLC
-//
-// Redistribution and use in source and binary forms, with or without
-// modification, are permitted provided that the following conditions are
-// met:
-//
-//     * Redistributions of source code must retain the above copyright
-// notice, this list of conditions and the following disclaimer.
-//     * Redistributions in binary form must reproduce the above
-// copyright notice, this list of conditions and the following disclaimer
-// in the documentation and/or other materials provided with the
-// distribution.
-//     * Neither the name of Google LLC nor the names of its
-// contributors may be used to endorse or promote products derived from
-// this software without specific prior written permission.
-//
-// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-#ifdef HAVE_CONFIG_H
-#include <config.h>  // Must come first
-#endif
-
-#include "common/linux/elfutils.h"
-
-#include <assert.h>
-#include <string.h>
-
-#include "common/linux/linux_libc_support.h"
-#include "common/linux/elfutils-inl.h"
-
-namespace google_breakpad {
-
-namespace {
-
-template<typename ElfClass>
-void FindElfClassSection(const char* elf_base,
-                         const char* section_name,
-                         typename ElfClass::Word section_type,
-                         const void** section_start,
-                         size_t* section_size) {
-  typedef typename ElfClass::Ehdr Ehdr;
-  typedef typename ElfClass::Shdr Shdr;
-
-  assert(elf_base);
-  assert(section_start);
-  assert(section_size);
-
-  assert(my_strncmp(elf_base, ELFMAG, SELFMAG) == 0);
-
-  const Ehdr* elf_header = reinterpret_cast<const Ehdr*>(elf_base);
-  assert(elf_header->e_ident[EI_CLASS] == ElfClass::kClass);
-
-  if (elf_header->e_shoff == 0) {
-    *section_start = NULL;
-    *section_size = 0;
-    return;
-  }
-
-  const Shdr* sections =
-    GetOffset<ElfClass, Shdr>(elf_header, elf_header->e_shoff);
-  const Shdr* section_names = sections + elf_header->e_shstrndx;
-  const char* names =
-    GetOffset<ElfClass, char>(elf_header, section_names->sh_offset);
-  const char* names_end = names + section_names->sh_size;
-
-  const Shdr* section =
-    FindElfSectionByName<ElfClass>(section_name, section_type,
-                                   sections, names, names_end,
-                                   elf_header->e_shnum);
-
-  if (section != NULL && section->sh_size > 0) {
-    *section_start = elf_base + section->sh_offset;
-    *section_size = section->sh_size;
-  }
-}
-
-template<typename ElfClass>
-void FindElfClassSegment(const char* elf_base,
-                         typename ElfClass::Word segment_type,
-                         wasteful_vector<ElfSegment>* segments) {
-  typedef typename ElfClass::Ehdr Ehdr;
-  typedef typename ElfClass::Phdr Phdr;
-
-  assert(elf_base);
-  assert(segments);
-
-  assert(my_strncmp(elf_base, ELFMAG, SELFMAG) == 0);
-
-  const Ehdr* elf_header = reinterpret_cast<const Ehdr*>(elf_base);
-  assert(elf_header->e_ident[EI_CLASS] == ElfClass::kClass);
-
-  const Phdr* phdrs =
-    GetOffset<ElfClass, Phdr>(elf_header, elf_header->e_phoff);
-
-  for (int i = 0; i < elf_header->e_phnum; ++i) {
-    if (phdrs[i].p_type == segment_type) {
-      ElfSegment seg = {};
-      seg.start = elf_base + phdrs[i].p_offset;
-      seg.size = phdrs[i].p_filesz;
-      segments->push_back(seg);
-    }
-  }
-}
-
-}  // namespace
-
-bool IsValidElf(const void* elf_base) {
-  return my_strncmp(reinterpret_cast<const char*>(elf_base),
-                    ELFMAG, SELFMAG) == 0;
-}
-
-int ElfClass(const void* elf_base) {
-  const ElfW(Ehdr)* elf_header =
-    reinterpret_cast<const ElfW(Ehdr)*>(elf_base);
-
-  return elf_header->e_ident[EI_CLASS];
-}
-
-bool FindElfSection(const void* elf_mapped_base,
-                    const char* section_name,
-                    uint32_t section_type,
-                    const void** section_start,
-                    size_t* section_size) {
-  assert(elf_mapped_base);
-  assert(section_start);
-  assert(section_size);
-
-  *section_start = NULL;
-  *section_size = 0;
-
-  if (!IsValidElf(elf_mapped_base))
-    return false;
-
-  int cls = ElfClass(elf_mapped_base);
-  const char* elf_base =
-    static_cast<const char*>(elf_mapped_base);
-
-  if (cls == ELFCLASS32) {
-    FindElfClassSection<ElfClass32>(elf_base, section_name, section_type,
-                                    section_start, section_size);
-    return *section_start != NULL;
-  } else if (cls == ELFCLASS64) {
-    FindElfClassSection<ElfClass64>(elf_base, section_name, section_type,
-                                    section_start, section_size);
-    return *section_start != NULL;
-  }
-
-  return false;
-}
-
-bool FindElfSegments(const void* elf_mapped_base,
-                     uint32_t segment_type,
-                     wasteful_vector<ElfSegment>* segments) {
-  assert(elf_mapped_base);
-  assert(segments);
-
-  if (!IsValidElf(elf_mapped_base))
-    return false;
-
-  int cls = ElfClass(elf_mapped_base);
-  const char* elf_base =
-    static_cast<const char*>(elf_mapped_base);
-
-  if (cls == ELFCLASS32) {
-    FindElfClassSegment<ElfClass32>(elf_base, segment_type, segments);
-    return true;
-  } else if (cls == ELFCLASS64) {
-    FindElfClassSegment<ElfClass64>(elf_base, segment_type, segments);
-    return true;
-  }
-
-  return false;
-}
-
-template <typename ElfClass>
-bool FindElfSoNameFromDynamicSection(const void* section_start,
-                                     size_t section_size,
-                                     const void* dynstr_start,
-                                     size_t dynstr_size,
-                                     char* soname,
-                                     size_t soname_size) {
-  typedef typename ElfClass::Dyn Dyn;
-
-  auto* dynamic = static_cast<const Dyn*>(section_start);
-  size_t dcount = section_size / sizeof(Dyn);
-  for (const Dyn* dyn = dynamic; dyn < dynamic + dcount; ++dyn) {
-    if (dyn->d_tag == DT_SONAME) {
-      const char* dynstr = static_cast<const char*>(dynstr_start);
-      if (dyn->d_un.d_val >= dynstr_size) {
-        // Beyond the end of the dynstr section
-        return false;
-      }
-      const char* str = dynstr + dyn->d_un.d_val;
-      const size_t maxsize = dynstr_size - dyn->d_un.d_val;
-      my_strlcpy(soname, str, maxsize < soname_size ? maxsize : soname_size);
-      return true;
-    }
-  }
-
-  return false;
-}
-
-bool ElfFileSoNameFromMappedFile(const void* elf_base,
-                                 char* soname,
-                                 size_t soname_size) {
-  if (!IsValidElf(elf_base)) {
-    // Not ELF
-    return false;
-  }
-
-  const void* segment_start;
-  size_t segment_size;
-  if (!FindElfSection(elf_base, ".dynamic", SHT_DYNAMIC, &segment_start,
-                      &segment_size)) {
-    // No dynamic section
-    return false;
-  }
-
-  const void* dynstr_start;
-  size_t dynstr_size;
-  if (!FindElfSection(elf_base, ".dynstr", SHT_STRTAB, &dynstr_start,
-                      &dynstr_size)) {
-    // No dynstr section
-    return false;
-  }
-
-  int cls = ElfClass(elf_base);
-  return cls == ELFCLASS32 ? FindElfSoNameFromDynamicSection<ElfClass32>(
-                                 segment_start, segment_size, dynstr_start,
-                                 dynstr_size, soname, soname_size)
-                           : FindElfSoNameFromDynamicSection<ElfClass64>(
-                                 segment_start, segment_size, dynstr_start,
-                                 dynstr_size, soname, soname_size);
-}
-
-}  // namespace google_breakpad