Portability fixes.

[userv.git] / INSTALL

diff --git a/INSTALL b/INSTALL
index baf762f9d8e797449bde81be112f698a83bbbd43..dee95972656f39753b378d1ff4d835b5f49fa981 100644 (file)
--- a/INSTALL
+++ b/INSTALL
@@ -84,3 +84,20 @@ malloc, unless stdio makes gratuitous mallocs).  openlog will already
 have been called (but syslog will not necessarily have been called).
 
 We assume that strerror is completely reentrant.
 have been called (but syslog will not necessarily have been called).
 
 We assume that strerror is completely reentrant.

+
+PROBLEMS
+
+* `function declaration isn't a prototype'
+
+  One some systems (at least some versions of NetBSD, for example),
+  the SIG_IGN and SIG_DFL macros contain function declarations (as part
+  of a typecast, presumably) which are not prototypes.  The warning
+  options that are used by default if the configure script detects that
+  you're using a good GCC then cause the compilation to fail.  You must
+  use
+    make CFLAGS=-O2
+  instead of just `make', thus suppressing warnings.
+
+  The bug is actually in your system header files, for not specifying
+  the number and types of arguments to signal handler functions when
+  they cast in the SIG_IGN and SIG_DFL macros.