Don't require pkg-config when building from repository.

[gnu-emacs] / etc / PROBLEMS

diff --git a/etc/PROBLEMS b/etc/PROBLEMS
index 3d5349c2793f7e646833fa91653c8ae453aa4ef7..1fffe0638c7e5f59b9d218c93a80196a5977f6c4 100644 (file)
--- a/etc/PROBLEMS
+++ b/etc/PROBLEMS
@@ -836,6 +836,20 @@ 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 +1248,7 @@ 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
@@ -2223,17 +2237,6 @@ If you do, please send it to bug-gnu-emacs@gnu.org so we can list it here.
 
 * Build-time problems
 
-** Autogen.sh / Autoreconf
-
-*** Running `autogen.sh' or `autoreconf' fails with an error of the form
-"possibly undefined macro: PKG_CONFIG".  This indicates that the version
-of aclocal that you are using cannot find the pkg.m4 file that
-pkg-config provides.  If you installed your own version of automake in
-a non-standard location /prefix, then add a line to the
-/prefix/share/aclocal/dirlist file (create the file if necessary)
-that gives the location of the directory that contains pkg.m4
-(e.g. /usr/share/aclocal).
-
 ** Configuration
 
 *** `configure' warns ``accepted by the compiler, rejected by the preprocessor''.