Too many fixes need backporting for GCC8...

... so instead, disable -Werror for older versions of glibc.

Signed-off-by: Alexey Neyman <stilor@att.net>

1 files changed, 12 insertions, 6 deletions

diff --git a/config/libc/glibc.in b/config/libc/glibc.in
index 00fffa7..5916a83 100644
--- a/config/libc/glibc.in
+++ b/config/libc/glibc.in
@@ -112,12 +112,6 @@ config GLIBC_HAS_OBSOLETE_RPC
     def_bool y
     depends on GLIBC_2_14_or_later
 
-# New GCC versions don't like the ifunc implementation in GCC, producing a warning.
-# We can either require old GCC for those versions, or disable erroring out on warnings.
-config GLIBC_HAS_NEW_IFUNC
-    def_bool y
-    depends on GLIBC_2_25_or_later
-
 config GLIBC_EXTRA_CONFIG_ARRAY
     string
     prompt "extra config"
@@ -326,4 +320,16 @@ config GLIBC_MIN_KERNEL
     default LINUX_VERSION                 if GLIBC_KERNEL_VERSION_AS_HEADERS
     default GLIBC_MIN_KERNEL_VERSION      if GLIBC_KERNEL_VERSION_CHOSEN
 
+# All supported versions of glibc build cleanly with GCC7 and earlier.
+# GCC8-related fixes were only available in glibc 2.27.
+config GLIBC_ENABLE_WERROR
+    bool "Enable -Werror during the build"
+    default y if GCC_7_or_older
+    default y if GCC_8_or_later && GLIBC_2_27_or_later
+    help
+      By default, glibc enables strict warning checks during the build.
+      However, older version of glibc may not build with newer versions
+      of the compiler than there were available at the time of a glibc
+      release (because newer compilers typically have better diagnostics).
+
 endif # KERNEL_LINUX