Fix PPC64LE by supplying --with-glibc-version

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

1 files changed, 10 insertions, 0 deletions

diff --git a/scripts/build/cc/gcc.sh b/scripts/build/cc/gcc.sh
index d4c1b43..8fd39b7 100644
--- a/scripts/build/cc/gcc.sh
+++ b/scripts/build/cc/gcc.sh
@@ -453,6 +453,16 @@ do_gcc_core_backend() {
         extra_config+=("--disable-libstdcxx-pch")
     fi
 
+    if [ "${CT_LIBC_GLIBC}" = "y" ]; then
+        # Report GLIBC's version to GCC, it affects the defaults on other options.
+        # Pass-2 should be able to get it from the headers, but for some options
+        # (such as --with-long-double-128) we need to get it right even in pass-1.
+        # GCC expects just two numbers separated by a dot.
+        local glibc_version=`CT_GetPkgVersion GLIBC | sed 's/\([1-9][0-9]*\.[1-9][0-9]*\).*/\1/'`
+
+        extra_config+=("--with-glibc-version=${glibc_version}")
+    fi
+
     case "${CT_CC_GCC_LDBL_128}" in
         y)  extra_config+=("--with-long-double-128");;
         m)  ;;