From 27936318ae69146b34325533676af5f79d55fe7d Mon Sep 17 00:00:00 2001 From: Romain Naour Date: Sun, 29 Oct 2017 12:49:42 +0100 Subject: [PATCH] package/glibc: remove mips r6 nan208 hook This hook is not needed since glibc 2.23 [1] and can be safely removed. [1] https://sourceware.org/git/?p=glibc.git;a=commitdiff;h=d5f2798a0ac9d5ad8ad7a506a2f840035135e2d2 Signed-off-by: Romain Naour Cc: Vicente Olivert Riera Signed-off-by: Thomas Petazzoni --- package/glibc/glibc.mk | 30 ------------------------------ 1 file changed, 30 deletions(-) diff --git a/package/glibc/glibc.mk b/package/glibc/glibc.mk index 0b8b440ef1..548fc093cc 100644 --- a/package/glibc/glibc.mk +++ b/package/glibc/glibc.mk @@ -121,34 +121,4 @@ define GLIBC_INSTALL_TARGET_CMDS done endef -# MIPS R6 requires to have NaN2008 support which is currently not -# supported by the Linux kernel. In order to prevent building the -# glibc against kernels not having NaN2008 support on platforms that -# requires it, glibc currently checks for an (inexisting) 10.0.0 -# kernel headers version. -# -# Since in practice the kernel support for NaN2008 is not really -# required for things to work properly, we adjust the glibc check to -# make it believe that NaN2008 support was added in the kernel -# starting from version 4.0.0. -# -# In general the compatibility issues introduced by mis-matched NaN -# encodings will not cause a problem as signalling NaNs are rarely used -# in average code. For MIPS R6 there isn't actually any compatibility -# issue as the hardware is always NaN2008 and software is always -# NaN2008. The problem only comes from when older MIPS code is linked in -# via a DSO and multiple NaN encodings are introduced. Since Buildroot -# is intended to have all code built from source then this scenario is -# highly unlikely. The failure mode, if it ever occurs, would be either -# that a signalling NaN fails to raise an invalid operation exception or -# (more likely) an ordinary NaN raises an invalid operation exception. -ifeq ($(BR2_MIPS_CPU_MIPS32R6)$(BR2_MIPS_CPU_MIPS64R6),y) -define GLIBC_FIX_MIPS_R6 - $(SED) 's#10.0.0#4.0.0#' \ - $(@D)/sysdeps/unix/sysv/linux/mips/configure \ - $(@D)/sysdeps/unix/sysv/linux/mips/configure.ac -endef -GLIBC_POST_EXTRACT_HOOKS += GLIBC_FIX_MIPS_R6 -endif - $(eval $(autotools-package)) -- 2.30.2