Add a paragraph to FAQ on Debugging configure scripts.

* doc/autoconf.texi (Debugging): Mention inspecting config.log.
* THANKS: Update.

Signed-off-by: Eric Blake <eblake@redhat.com>

diff --git a/ChangeLog b/ChangeLog
index 181de16eb8fbb4d247d7df7d8ebb1673ceb4dc92..aec770d8943e1939e3e4af9a9344a1d19e05ae2a 100644 (file)
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,9 @@
+2010-04-22  Joel James Adamson  <joel@chondestes.bio.unc.edu>  (tiny change)
+
+       Add a paragraph to FAQ on Debugging configure scripts.
+       * doc/autoconf.texi (Debugging): Mention inspecting config.log.
+       * THANKS: Update.
+
 2010-04-05  Eric Blake  <eblake@redhat.com>
 
        Fix m4_cr_all for EBCDIC.

diff --git a/THANKS b/THANKS
index 21aeb899a04e834392195e128411a1221ee4440b..2d0cf0e3cc525e7e7bd6b8f8d56c0808ca71157f 100644 (file)
--- a/THANKS
+++ b/THANKS
@@ -187,6 +187,7 @@ Jim Meyering                meyering@ascend.com
 Jiro Takabatake             jiro@din.or.jp
 Jochen Friedrich            jochen@scram.de
 Joel E. Denny               jdenny@ces.clemson.edu
+Joel James Adamson          joel@chondestes.bio.unc.edu
 Joey Mingrone               joey@mingrone.org
 Johan Danielsson            joda@pdc.kth.se
 John Calcote                john.calcote@gmail.com

diff --git a/doc/autoconf.texi b/doc/autoconf.texi
index 90bd327e292d3ae5ffdc4c37c3f77008f3bf0a29..1ffaeab416e3f36f4dc1fee204b96c2d8f25c8ea 100644 (file)
--- a/doc/autoconf.texi
+++ b/doc/autoconf.texi
@@ -24539,6 +24539,14 @@ cache variable is documented with a test macro or may be inferred from
 @ref{Cache Variable Names}; the precise semantics of undocumented
 variables are often internal details, subject to change.
 @end itemize
+
+@item
+Alternatively, @command{configure} may produce invalid results because
+of uncaught programming errors, in your package or in an upstream
+library package.  For example, when @code{AC_CHECK_LIB} fails to find a
+library with a specified function, always check @file{config.log}.  This
+will reveal the exact error that produced the failing result: the
+library linked by @code{AC_CHECK_LIB} probably has a fatal bug.
 @end itemize
 
 Conversely, as macro author, you can make it easier for users of your