https://bugs.documentfoundation.org/show_bug.cgi?id=167950
--- Comment #2 from Bashar Al Halabi <[email protected]> --- Root cause, confirmed on 26.8.1.1 and still present on master (commit 6e8329f204dd, 2026-10-15). configure.ac, Android toolchain section (line 902 at 26.8.1.1, line 924 on master): if test "$ENABLE_LTO" = TRUE; then ANDROIDCFLAGS="$ANDROIDCFLAGS -flto -fuse-linker-plugin -O2" -fuse-linker-plugin is a GCC option. The NDK ships only clang, which reports that it ignores it. Every configure check that compiles with -Werror then fails, and the first such check is the C++20 test. From config.log (NDK r28c, Linux host): checking whether clang++ supports C++20 clang++ -target aarch64-linux-android26 ... -flto -fuse-linker-plugin -O2 -stdlib=libc++ -c -std=c++20 -Werror conftest.cpp clang++: error: optimization flag '-fuse-linker-plugin' is not supported [-Werror,-Wignored-optimization-argument] configure: error: no NDK 28.2.13676358 on a macOS host gives the same result. solenv/gbuild/platform/com_GCC_defs.mk already uses -flto=thin for clang (gb_CLANG_LTOFLAGS), so dropping -fuse-linker-plugin from the Android CFLAGS (or using -flto=thin there as well) looks like the fix. -- You are receiving this mail because: You are the assignee for the bug.
