devel/gcc/patches-12.x/701-riscv-linux-Don-t-add-latomic-with-pthread.patch

   1 From 203f3060dd363361b172f7295f42bb6bf5ac0b3b Mon Sep 17 00:00:00 2001
   2 From: Andreas Schwab <schwab@suse.de>
   3 Date: Sat, 23 Apr 2022 15:48:42 +0200
   4 Subject: [PATCH] riscv/linux: Don't add -latomic with -pthread
   5
   6 Now that we have support for inline subword atomic operations, it is no
   7 longer necessary to link against libatomic.  This also fixes testsuite
   8 failures because the framework does not properly set up the linker flags
   9 for finding libatomic.
  10 The use of atomic operations is also independent of the use of libpthread.
  11
  12 gcc/
  13         * config/riscv/linux.h (LIB_SPEC): Don't redefine.
  14 ---
  15  gcc/config/riscv/linux.h | 10 ----------
  16  1 file changed, 10 deletions(-)
  17
  18 --- a/gcc/config/riscv/linux.h
  19 +++ b/gcc/config/riscv/linux.h
  20 @@ -35,16 +35,6 @@ along with GCC; see the file COPYING3.
  21  #undef MUSL_DYNAMIC_LINKER
  22  #define MUSL_DYNAMIC_LINKER "/lib/ld-musl-riscv" XLEN_SPEC MUSL_ABI_SUFFIX ".so.1"
  23
  24 -/* Because RISC-V only has word-sized atomics, it requries libatomic where
  25 -   others do not.  So link libatomic by default, as needed.  */
  26 -#undef LIB_SPEC
  27 -#ifdef LD_AS_NEEDED_OPTION
  28 -#define LIB_SPEC GNU_USER_TARGET_LIB_SPEC \
  29 -  " %{pthread:" LD_AS_NEEDED_OPTION " -latomic " LD_NO_AS_NEEDED_OPTION "}"
  30 -#else
  31 -#define LIB_SPEC GNU_USER_TARGET_LIB_SPEC " -latomic "
  32 -#endif
  33 -
  34  #define ICACHE_FLUSH_FUNC "__riscv_flush_icache"
  35
  36  #define CPP_SPEC "%{pthread:-D_REENTRANT}"