make/autoconf/flags-ldflags.m4

8205197: Never default to using libc++ on Linux
Summary: Let the toolchain choose the standard library by default
Reviewed-by: tbell, erikj, gziemski

*** 79,89 ****
      BASIC_LDFLAGS_JDK_LIB_ONLY="-Wl,-z,noexecstack"
      LIBJSIG_NOEXECSTACK_LDFLAGS="-Wl,-z,noexecstack"
  
    elif test "x$TOOLCHAIN_TYPE" = xclang; then
      BASIC_LDFLAGS_JVM_ONLY="-mno-omit-leaf-frame-pointer -mstack-alignment=16 \
!         -stdlib=libc++ -fPIC"
  
    elif test "x$TOOLCHAIN_TYPE" = xsolstudio; then
      BASIC_LDFLAGS="-Wl,-z,defs"
      BASIC_LDFLAGS_ONLYCXX="-norunpath"
      BASIC_LDFLAGS_ONLYCXX_JDK_ONLY="-xnolib"
--- 79,89 ----
      BASIC_LDFLAGS_JDK_LIB_ONLY="-Wl,-z,noexecstack"
      LIBJSIG_NOEXECSTACK_LDFLAGS="-Wl,-z,noexecstack"
  
    elif test "x$TOOLCHAIN_TYPE" = xclang; then
      BASIC_LDFLAGS_JVM_ONLY="-mno-omit-leaf-frame-pointer -mstack-alignment=16 \
!         -fPIC"
  
    elif test "x$TOOLCHAIN_TYPE" = xsolstudio; then
      BASIC_LDFLAGS="-Wl,-z,defs"
      BASIC_LDFLAGS_ONLYCXX="-norunpath"
      BASIC_LDFLAGS_ONLYCXX_JDK_ONLY="-xnolib"