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authorThomas White <taw@bitwiz.org.uk>2010-12-07 19:58:51 -0700
committerThomas White <taw@physics.org>2012-02-22 15:27:08 +0100
commit93e1ac85ffb4947080adcd4699fcccdbcf757fa5 (patch)
tree5fbdfa8952ce2de15fb58e62e9c1aef17ccb2d0c /lib/dummy.c
parent508de274d96794a194694cf75b9711d1b8882301 (diff)
Add Gnulib 'lib' items
Diffstat (limited to 'lib/dummy.c')
-rw-r--r--lib/dummy.c42
1 files changed, 42 insertions, 0 deletions
diff --git a/lib/dummy.c b/lib/dummy.c
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+/* A dummy file, to prevent empty libraries from breaking builds.
+ Copyright (C) 2004, 2007, 2009, 2010 Free Software Foundation, Inc.
+
+ This program is free software: you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 3 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see <http://www.gnu.org/licenses/>. */
+
+/* Some systems, reportedly OpenBSD and Mac OS X, refuse to create
+ libraries without any object files. You might get an error like:
+
+ > ar cru .libs/libgl.a
+ > ar: no archive members specified
+
+ Compiling this file, and adding its object file to the library, will
+ prevent the library from being empty. */
+
+/* Some systems, such as Solaris with cc 5.0, refuse to work with libraries
+ that don't export any symbol. You might get an error like:
+
+ > cc ... libgnu.a
+ > ild: (bad file) garbled symbol table in archive ../gllib/libgnu.a
+
+ Compiling this file, and adding its object file to the library, will
+ prevent the library from exporting no symbols. */
+
+#ifdef __sun
+/* This declaration ensures that the library will export at least 1 symbol. */
+int gl_dummy_symbol;
+#else
+/* This declaration is solely to ensure that after preprocessing
+ this file is never empty. */
+typedef int dummy;
+#endif