| Patch | Description | Author | Forwarded | Bugs | Origin | Last update |
|---|---|---|---|---|---|---|
| riscv-rdcycle.diff | unscaledcycleclock: remove RISC-V support Starting with Linux 6.6 [1], RDCYCLE is a privileged instruction on RISC-V and can't be used directly from userland. There is a sysctl option to change that as a transition period, but it will eventually disappear. The RDTIME instruction is another less accurate alternative, however its frequency varies from board to board, and there is currently now way to get its frequency from userland [2]. Therefore this patch just removes the code for unscaledcycleclock on RISC-V. Without processor specific implementation, abseil relies on std::chrono::steady_clock::now().time_since_epoch() which is basically a wrapper around clock_gettime (CLOCK_MONOTONIC), which in turns use __vdso_clock_gettime(). On RISC-V this VDSO is just a wrapper around RDTIME correctly scaled to use nanoseconds units. This fixes the testsuite on riscv64, tested on a VisionFive 2 board. [1] https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=cc4c07c89aada16229084eeb93895c95b7eabaa3 [2] https://github.com/abseil/abseil-cpp/pull/1631 |
aurel32 <aurelien@aurel32.net> | no | debian | upstream, https://github.com/abseil/abseil-cpp/commit/7335a36d0b5c1c597566f9aa3f458a5b6817c3b4 | |
| configure.diff | Set package configuration options Configure Abseil for Debian. - Set the SONAME appropriately. - To minimize the possibility of future ABI breakage, treat absl::any, absl::optional, absl::string_view, and absl::variant as their own types (rather than aliases for the std:: versions), and compile everything in an inline namespace. - Enable upstream's hardened build mode. |
Benjamin Barenblat <bbaren@google.com> | not-needed | |||
| cpu-features.diff | Canonicalize supported CPU feature set Explicitly set supported CPU features. - Disable Intel SSE and SSE2 on i386, since Debian supports some i386 processors without those extensions. Keep them enabled on amd64, since all amd64 processors have them. - Disable Intel SSSE3 entirely, since no i386 processor supports it and Debian supports amd64 processors without it. - Disable NEON on armel and armhf, since no armel processor supports NEON and Debian supports some armhf processors without it. Keep it enabled on arm64, since all arm64 processors have it. |
Benjamin Barenblat <bbaren@google.com> | not-needed | |||
| latomic.diff | Use libatomic if necessary On some architectures, notably armel, Abseil needs symbols defined in libatomic. Abseil does not currently have a well-developed system to declare external library dependencies, so just have the linker determine if anything needs libatomic and add the DT_NEEDED entry where necessary. |
Benjamin Barenblat <bbaren@google.com> | no | debian | ||
| empty-flags-library.diff | Eliminate libabsl_flags.so and libabsl_flags.a The libabsl_flags library only contains code when compiling with MSVC, which Debian doesn't use. Skip compiling absl/flags/flag.cc, and make the Abseil flags library header-only. |
Benjamin Barenblat <bbaren@google.com> | not-needed | |||
| cordz-info-statistics-test.diff | no | |||||
| pkg-config-directives.diff | Do not propagate -Wno-... flags into pkg-config files Lintian doesn't like any -W flags in pkg-config files, even if those flags disable warnings. |
Benjamin Barenblat <bbaren@google.com> | not-needed | |||
| riscv-nan-formatting.diff | riscv64: Disable negative NaN float ostream format checking Streaming a negative NaN float with libstdc++ on riscv64 produces an optimization-dependent result. Don't require that logging such a float with Abseil produce the same result as libstdc++ streaming. |
Benjamin Barenblat <bbaren@google.com> | no | debian |