Fixes warning when redefining PATH_MAX when building with MINGW.

Fixes warning thrown when compiling digest.cc with MinGW64, by only defining PATH_MAX, if it has not yet been defined.
Else building with MinGW64, throws the following warning:

<PATH_TO_SOURCE_FOLDER>\boringssl\src\tool\digest.cc:39: warning: "PATH_MAX" redefined
   39 | #define PATH_MAX MAX_PATH
      |
In file included from C:/msys64/mingw64/lib/gcc/x86_64-w64-mingw32/9.3.0/include-fixed/limits.h:194,
                 from C:/msys64/mingw64/lib/gcc/x86_64-w64-mingw32/9.3.0/include-fixed/syslimits.h:7,
                 from C:/msys64/mingw64/lib/gcc/x86_64-w64-mingw32/9.3.0/include-fixed/limits.h:34,
                 from C:/msys64/mingw64/x86_64-w64-mingw32/include/pthread.h:67,
                 from C:/msys64/mingw64/include/c++/9.3.0/x86_64-w64-mingw32/bits/gthr-default.h:35,
                 from C:/msys64/mingw64/include/c++/9.3.0/x86_64-w64-mingw32/bits/gthr.h:148,
                 from C:/msys64/mingw64/include/c++/9.3.0/ext/atomicity.h:35,
                 from C:/msys64/mingw64/include/c++/9.3.0/memory:73,
                 from <PATH_TO_SOURCE_FOLDER>/boringssl/src/include/openssl/base.h:473,
                 from <PATH_TO_SOURCE_FOLDER>\boringssl\src\tool\digest.cc:15:
C:/msys64/mingw64/x86_64-w64-mingw32/include/limits.h:20: note: this is the location of the previous definition
   20 | #define PATH_MAX 260
      |

Change-Id: I29eb33ee8fad9e4e80d9348a0d5e4057dfac620c
Reviewed-on: https://boringssl-review.googlesource.com/c/boringssl/+/41705
Reviewed-by: David Benjamin <davidben@google.com>
Commit-Queue: David Benjamin <davidben@google.com>
1 file changed
tree: 23b4d89023ae395bc79cb26214515e278128b4c0
  1. .github/
  2. crypto/
  3. decrepit/
  4. fuzz/
  5. include/
  6. ssl/
  7. third_party/
  8. tool/
  9. util/
  10. .clang-format
  11. .gitignore
  12. API-CONVENTIONS.md
  13. BREAKING-CHANGES.md
  14. BUILDING.md
  15. CMakeLists.txt
  16. codereview.settings
  17. CONTRIBUTING.md
  18. FUZZING.md
  19. go.mod
  20. INCORPORATING.md
  21. LICENSE
  22. PORTING.md
  23. README.md
  24. SANDBOXING.md
  25. sources.cmake
  26. STYLE.md
README.md

BoringSSL

BoringSSL is a fork of OpenSSL that is designed to meet Google's needs.

Although BoringSSL is an open source project, it is not intended for general use, as OpenSSL is. We don't recommend that third parties depend upon it. Doing so is likely to be frustrating because there are no guarantees of API or ABI stability.

Programs ship their own copies of BoringSSL when they use it and we update everything as needed when deciding to make API changes. This allows us to mostly avoid compromises in the name of compatibility. It works for us, but it may not work for you.

BoringSSL arose because Google used OpenSSL for many years in various ways and, over time, built up a large number of patches that were maintained while tracking upstream OpenSSL. As Google's product portfolio became more complex, more copies of OpenSSL sprung up and the effort involved in maintaining all these patches in multiple places was growing steadily.

Currently BoringSSL is the SSL library in Chrome/Chromium, Android (but it's not part of the NDK) and a number of other apps/programs.

Project links:

There are other files in this directory which might be helpful: