Build failed for bootlin-sparc-uclibc

[javad123javad]

Hello,

When trying to build for bootlin-sparc-uclibc the following linker error is reported:

bootlin-sparc-uclibc/host/opt/ext-toolchain/bin/../lib/gcc/sparc-buildroot-linux-uclibc/10.4.0/../../../../sparc-buildroot-linux-uclibc/bin/ld: src/libplacebo.so.349.p/vulkan_swapchain.c.o: in function `present_cb_cb':
swapchain.c:(.text+0x8f0): undefined reference to `__atomic_fetch_sub_4'
collect2: error: ld returned 1 exit status
[73/74] Compiling C object demos/libnuklear.a.p/ui.c.o

[haasn]

It seems like uclibc either doesn't implement atomic_uint_fast32_t, or doesn't implement atomic_fetch_sub_explicit(..., 1, memory_order_release).

That would make it a non-standards-compliant libc, in which case I don't think there's anything we can/should do.

[javad123javad]

We are porting libplacebo to Buildroot. It seems for other toolchains that are based on ulibc it works. Just for this toolchain it doesn't works. Anyway thanks.

                             arm-aarch64 [ 1/41]: OK
                   bootlin-aarch64-glibc [ 2/41]: OK
               bootlin-arcle-hs38-uclibc [ 3/41]: OK
                    bootlin-armv5-uclibc [ 4/41]: OK
                     bootlin-armv7-glibc [ 5/41]: OK
                   bootlin-armv7m-uclibc [ 6/41]: SKIPPED
                      bootlin-armv7-musl [ 7/41]: OK
                bootlin-m68k-5208-uclibc [ 8/41]: SKIPPED
               bootlin-m68k-68040-uclibc [ 9/41]: OK
             bootlin-microblazeel-uclibc [10/41]: OK
                bootlin-mipsel32r6-glibc [11/41]: OK
                   bootlin-mipsel-uclibc [12/41]: OK
                     bootlin-nios2-glibc [13/41]: OK
                 bootlin-openrisc-uclibc [14/41]: OK
        bootlin-powerpc64le-power8-glibc [15/41]: OK
           bootlin-powerpc-e500mc-uclibc [16/41]: OK
                   bootlin-riscv32-glibc [17/41]: OK
                   bootlin-riscv64-glibc [18/41]: OK
                    bootlin-riscv64-musl [19/41]: OK
                 bootlin-s390x-z13-glibc [20/41]: OK
                      bootlin-sh4-uclibc [21/41]: OK
                   bootlin-sparc64-glibc [22/41]: OK
                    bootlin-sparc-uclibc [23/41]: FAILED
                    bootlin-x86-64-glibc [24/41]: OK
                     bootlin-x86-64-musl [25/41]: OK
                   bootlin-x86-64-uclibc [26/41]: OK
                   bootlin-x86-i686-musl [27/41]: OK
                   bootlin-xtensa-uclibc [28/41]: OK
                            br-arm-basic [29/41]: SKIPPED
                    br-arm-full-nothread [30/41]: SKIPPED
                      br-arm-full-static [31/41]: SKIPPED
                   br-i386-pentium4-full [32/41]: SKIPPED
                      br-mips64-n64-full [33/41]: SKIPPED
                 br-mips64r6-el-hf-glibc [34/41]: SKIPPED
               br-powerpc-603e-basic-cpp [35/41]: SKIPPED
               br-powerpc64-power7-glibc [36/41]: SKIPPED
                       linaro-aarch64-be [37/41]: SKIPPED
                          linaro-aarch64 [38/41]: SKIPPED
                              linaro-arm [39/41]: SKIPPED
                         sourcery-mips64 [40/41]: SKIPPED
                           sourcery-mips [41/41]: SKIPPED