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In commita2380157f6("toolchain: enable libquadmath for PowerPC with VSX"), the definition of BR2_TOOLCHAIN_HAS_LIBQUADMATH has been extended to also be true when BR2_POWERPC_CPU_HAS_VSX. However, practical experiments show that when 64-bit VSX-capable cores are used in 32-bit mode, libquadmath is not built by GCC, causing build failures: cp: cannot stat '/home/autobuild/autobuild/instance-3/output-1/host/powerpc-buildroot-linux-musl/lib*/libquadmath*': No such file or directory We did an extensive testing, building the 27 combinations of: - GCC versions: 14, 15, 16 - C library: glibc, uclibc, musl - PowerPC 32-bit, PowerPC 64-bit, PowerPC 64-bit little endian This testing provides the following results: | gcc14 | powerpc64 | glibc | OK | | gcc14 | powerpc64le | glibc | OK | | gcc14 | powerpc64le | musl | OK | | gcc14 | powerpc64le | uclibc | SKIPPED | | gcc14 | powerpc64 | musl | OK | | gcc14 | powerpc64 | uclibc | SKIPPED | | gcc14 | powerpc | glibc | FAILED | | gcc14 | powerpc | musl | FAILED | | gcc14 | powerpc | uclibc | FAILED | | gcc15 | powerpc64 | glibc | OK | | gcc15 | powerpc64le | glibc | OK | | gcc15 | powerpc64le | musl | OK | | gcc15 | powerpc64le | uclibc | SKIPPED | | gcc15 | powerpc64 | musl | OK | | gcc15 | powerpc64 | uclibc | SKIPPED | | gcc15 | powerpc | glibc | FAILED | | gcc15 | powerpc | musl | FAILED | | gcc15 | powerpc | uclibc | FAILED | | gcc16 | powerpc64 | glibc | OK | | gcc16 | powerpc64le | glibc | OK | | gcc16 | powerpc64le | musl | OK | | gcc16 | powerpc64le | uclibc | SKIPPED | | gcc16 | powerpc64 | musl | OK | | gcc16 | powerpc64 | uclibc | SKIPPED | | gcc16 | powerpc | glibc | FAILED | | gcc16 | powerpc | musl | FAILED | | gcc16 | powerpc | uclibc | FAILED | The "SKIPPED" are when the configuration is not possible: uClibc doesn't support powerpc64 or powerpc64le. Then, as we can see, the build fails for all "powerpc" configuration. Our conclusion is therefore that libquadmath is not supported on PowerPC 32-bit. While we were not able to find direct evidence in the gcc code base, this practical experiment shows that is simply doesn't work on PowerPC 32-bit. So, we take the logical action of adjusting BR2_TOOLCHAIN_HAS_LIBQUADMATH so that it is true only on powerpc64/powerpc64le. Fixes: https://autobuild.buildroot.org/results/46d435c9f5086a8695f4f6cd4026bb0d194de13c/ Cc: Romain Naour <romain.naour@smile.fr> Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com> Signed-off-by: Peter Korsgaard <peter@korsgaard.com> (cherry picked from commit06426297c4) Signed-off-by: Raphaël Mélotte <raphael.melotte@mind.be>