https://gcc.gnu.org/bugzilla/show_bug.cgi?id=58638
--- Comment #5 from Jonathan Wakely <redi at gcc dot gnu.org> ---
I think the right fix is
--- a/libstdc++-v3/configure.ac
+++ b/libstdc++-v3/configure.ac
@@ -120,6 +120,11 @@ if test "$enable_shared" = yes; then
glibcxx_compiler_pic_flag="$lt_prog_compiler_pic_CXX"
glibcxx_compiler_shared_flag="-D_GLIBCXX_SHARED"
+else if test "${with_pic+set}" = set; then
+ glibcxx_lt_pic_flag="-prefer-pic"
+ glibcxx_compiler_pic_flag="$lt_prog_compiler_pic_CXX"
+ glibcxx_compiler_shared_flag=
+
else
glibcxx_lt_pic_flag=
glibcxx_compiler_pic_flag=
Otherwise we define _GLIBCXX_SHARED for non-shared builds and get unwanted (and
useless) symbols in the static lib.
