[librsvg: 1/2] Auto-detect -Bsymbolic, fixes configure on macOS

[Federico Mena Quintero <federico src gnome org>]

commit b99891e31eb6ce550e7e1cb2ca592095b3050a93
Author: Brion Vibber <brion pobox com>
Date:   Sun Feb 25 18:42:36 2018 -0800

    Auto-detect -Bsymbolic, fixes configure on macOS
    
    The -Bsymbolic linker option is ELF-specific, and was breaking
    configure on macOS unless --disable-Bsymbolic was explicitly passed.
    
    Switching the behavior from requiring -Bsymbolic to be available
    by default to just warning and continuing on without.
    
    Fixes https://gitlab.gnome.org/GNOME/librsvg/issues/211

 configure.ac | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/configure.ac b/configure.ac
index 15b26b2d..9f8dce29 100644
--- a/configure.ac
+++ b/configure.ac
@@ -216,7 +216,7 @@ AM_CONDITIONAL([ENABLE_PIXBUF_LOADER],[test "$enable_pixbuf_loader" = "yes"])
 AC_ARG_ENABLE([Bsymbolic],
   [AS_HELP_STRING([--disable-Bsymbolic],
                   [disable linking with -Bsymbolic])],
-  [],[enable_Bsymbolic=yes])
+  [enable_Bsymbolic=no],[enable_Bsymbolic=auto])
 
 BSYMBOLIC_LDFLAG=
 if test "$enable_Bsymbolic" != "no"; then