declare smobs in alloc.c

[bpt/emacs.git] / etc / PROBLEMS

diff --git a/etc/PROBLEMS b/etc/PROBLEMS
index 58c2cea..98e19d3 100644 (file)
--- a/etc/PROBLEMS
+++ b/etc/PROBLEMS
@@ -159,7 +159,6 @@ This is due to a bug introduced in ImageMagick 6.8.2-3.  The bug should
 be fixed in ImageMagick 6.8.3-10.  See <URL:http://debbugs.gnu.org/13867>.
 
 ** Crashes when displaying GIF images in Emacs built with version
-
 libungif-4.1.0 are resolved by using version libungif-4.1.0b1.
 Configure checks for the correct version, but this problem could occur
 if a binary built against a shared libungif is run on a system with an
@@ -836,6 +835,20 @@ you want to use fcitx with Emacs, you have two choices.  Toggle fcitx
 by another key (e.g. C-\) by modifying ~/.fcitx/config, or be
 accustomed to use C-@ for `set-mark-command'.
 
+*** Link-time optimization with clang doesn't work on Fedora 20.
+
+As of May 2014, Fedora 20 has broken LLVMgold.so plugin support in clang
+(tested with clang-3.4-6.fc20) - `clang --print-file-name=LLVMgold.so'
+prints `LLVMgold.so' instead of full path to plugin shared library, and
+`clang -flto' is unable to find the plugin with the following error:
+
+/bin/ld: error: /usr/bin/../lib/LLVMgold.so: could not load plugin library:
+/usr/bin/../lib/LLVMgold.so: cannot open shared object file: No such file
+or directory
+
+The only way to avoid this is to build your own clang from source code
+repositories, as described at http://clang.llvm.org/get_started.html.
+
 *** M-SPC seems to be ignored as input.
 
 See if your X server is set up to use this as a command
@@ -1234,7 +1247,7 @@ https://bugzilla.xfce.org/show_bug.cgi?id=7588 .
 
 When you start Emacs you may see something like this:
 
-(emacs:2286): LIBDBUSMENU-GTK-CRITICAL **: watch_submenu: assertion 
+(emacs:2286): LIBDBUSMENU-GTK-CRITICAL **: watch_submenu: assertion
 `GTK_IS_MENU_SHELL(menu)' failed
 
 This happens if the Emacs binary has been renamed.  The cause is the Ubuntu