package/glibc: disable on RISC-V ilp32f and lp64f, not supported

glibc fails to build on RISC-V 32-bit with the ilp32f ABI and on
RISC-V 64-bit with the lp64f: both use single-point precision floating
point, which glibc doesn't support, failing during the configure step
with:

  configure: error: glibc does not yet support the single floating-point ABI

Fix that by disabling glibc support on those configurations.

Fixes:

  https://autobuild.buildroot.org/results/fe8d569cab507992978ef0da649278dd3a9e0b23/

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Signed-off-by: Julien Olivain <ju.o@free.fr>
(cherry picked from commit 8292b8fb89ba71d2b35d4596327b022741f18be4)
Signed-off-by: Thomas Perale <thomas.perale@mind.be>

package/glibc/Config.in

@@ -23,7 +23,9 @@ config BR2_PACKAGE_GLIBC_ARCH_SUPPORTS
 	default y if BR2_nios2
 	default y if BR2_arc && BR2_ARC_ATOMIC_EXT && !BR2_arc750d && !BR2_arc770d
 	depends on !BR2_POWERPC_CPU_HAS_SPE
-	depends on BR2_RISCV_ISA_RVA || !BR2_riscv
+	# glibc needs atomic instructions, and does not support
+	# single-precision floating point ABIs (ilp32f and lp64f)
+	depends on (BR2_RISCV_ISA_RVA && !BR2_RISCV_ABI_ILP32F && !BR2_RISCV_ABI_LP64F) || !BR2_riscv
 	depends on BR2_USE_MMU
 
 config BR2_PACKAGE_GLIBC_SUPPORTS