From c34585205eff392fb1a205d4156a1e9b95a584ee Mon Sep 17 00:00:00 2001
From: dan <devnull@localhost>
Date: Tue, 27 Mar 2001 01:31:18 -0800
Subject: [PATCH] [svn] configure.in: Christian Fraenkel's tests for -lcrypto
 and -lssl were in the wrong order, causing a link failure if you're using
 libcrypto.a and libssl.a rather than shared libraries.  Also put in checks
 for -ldl, necessary since the libcrypto shared library doesn't record its
 dependency on libdl.

---
 ChangeLog    |  6 ++++++
 configure.in | 13 ++++++++++++-
 2 files changed, 18 insertions(+), 1 deletion(-)

diff --git a/ChangeLog b/ChangeLog
index 1055ca3a..69fadae9 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -2,6 +2,12 @@
 
 	* INSTALL: Updated to reflect --with-ssl's new optional parameter.
 
+	* configure.in: Christian Fraenkel's tests for -lcrypto and -lssl
+	were in the wrong order, causing a link failure if you're using
+	libcrypto.a and libssl.a rather than shared libraries.  Also put
+	in checks for -ldl, necessary since the libcrypto shared library
+	doesn't record its dependency on libdl.
+
 2001-03-26  Dan Harkless  <wget@harkless.org>
 
 	* TODO: -p should probably go "_two_ more hops" on <FRAMESET> pages.
diff --git a/configure.in b/configure.in
index 1499b21d..92728ce9 100644
--- a/configure.in
+++ b/configure.in
@@ -204,8 +204,19 @@ if test x"$with_ssl" != x -a x"$with_ssl" != x"no"; then
   LDFLAGS="-L$with_ssl/lib -R$with_ssl/lib $LDFLAGS"
 
   ssl_link_failure=no
-  AC_CHECK_LIB(ssl,SSL_new,,ssl_link_failure=yes,-lcrypto)
+
+  dnl Unfortunately, as of this writing (OpenSSL 0.9.6), the libcrypto shared
+  dnl library doesn't record its dependency on libdl, so we need to check for it
+  dnl ourselves so we won't fail to link due to a lack of -ldl.  Most OSes use
+  dnl dlopen(), but HP-UX uses shl_load().
+  AC_CHECK_LIB(dl,dlopen)
+  AC_CHECK_LIB(dl,shl_load)
+
+  dnl These checks need to be in this order, or you'll get a link failure if you
+  dnl use a static libcrypto.a and libssl.a rather than shared libraries.
   AC_CHECK_LIB(crypto,RSA_new,,ssl_link_failure=yes)
+  AC_CHECK_LIB(ssl,SSL_new,,ssl_link_failure=yes)
+
   if test x"$ssl_link_failure" = x"yes"; then
     echo
     echo "WARNING: Failed to link with OpenSSL libraries in $with_ssl/lib."
-- 
2.39.2