Per glibc's ChangeLog, 2.6.16 is the minimum required by at least glibc 2.9
Prior to this, it was a murky 2.6.14 + patches to 2.6.16 (when it was all
upstream).
# ARM OABI is fine with 2.4.0, EABI is not, so we override on "-gnueabi"
# TARGET_OS here, not on architecture which is 'arm' in both cases
-OLDEST_KERNEL_linux-gnueabi ?= "2.6.14"
+OLDEST_KERNEL_linux-gnueabi ?= "2.6.16"
OLDEST_KERNEL_sparc64 ?= "2.4.21"
OLDEST_KERNEL_ppc64 ?= "2.4.21"
# ARM OABI is fine with 2.4.0, EABI is not, so we override on "-gnueabi"
# TARGET_OS here, not on architecture which is 'arm' in both cases
-OLDEST_KERNEL_linux-gnueabi ?= "2.6.14"
+OLDEST_KERNEL_linux-gnueabi ?= "2.6.16"
OLDEST_KERNEL_sparc64 ?= "2.4.21"
OLDEST_KERNEL_ppc64 ?= "2.4.21"
# ARM OABI is fine with 2.4.0, EABI is not, so we override on "-gnueabi"
# TARGET_OS here, not on architecture which is 'arm' in both cases
-OLDEST_KERNEL_linux-gnueabi ?= "2.6.14"
+OLDEST_KERNEL_linux-gnueabi ?= "2.6.16"
OLDEST_KERNEL_sparc64 ?= "2.4.21"
OLDEST_KERNEL_ppc64 ?= "2.4.21"