summaryrefslogtreecommitdiff
path: root/Build/source/texk/psutils/psutils-src/dummy.c
diff options
context:
space:
mode:
authorKarl Berry <karl@freefriends.org>2021-02-25 19:22:25 +0000
committerKarl Berry <karl@freefriends.org>2021-02-25 19:22:25 +0000
commitad547a6b5986815fda458221149728d9d9ab1d87 (patch)
tree16296910eb3eca724371474ea9aea3994dc69614 /Build/source/texk/psutils/psutils-src/dummy.c
parent947b43de3dd21d58ccc2ffadefc4441ea1c2a813 (diff)
restore Build,TODO from r57911
git-svn-id: svn://tug.org/texlive/trunk@57915 c570f23f-e606-0410-a88d-b1316a301751
Diffstat (limited to 'Build/source/texk/psutils/psutils-src/dummy.c')
-rw-r--r--Build/source/texk/psutils/psutils-src/dummy.c30
1 files changed, 30 insertions, 0 deletions
diff --git a/Build/source/texk/psutils/psutils-src/dummy.c b/Build/source/texk/psutils/psutils-src/dummy.c
new file mode 100644
index 00000000000..061a78c34b2
--- /dev/null
+++ b/Build/source/texk/psutils/psutils-src/dummy.c
@@ -0,0 +1,30 @@
+/* A dummy file, to prevent empty libraries from breaking builds.
+
+ This file is in the public domain. -- Bruno Haible */
+
+/* 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