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[svn] Rewrote OpenSSL lib detection.
Now the code loops over system locations where libssl/libcrypto might be located. Aside from linking, it actually tries to run the executable before concluding that the linking "worked". Published in <sxs4rua6zxm.fsf@florida.arsdigita.de>.
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hniksic
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71045a2853
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@ -1,3 +1,10 @@
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2001-05-25 Hrvoje Niksic <hniksic@arsdigita.com>
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* configure.in: Rewrote OpenSSL library detection. Now the code
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loops over system locations where libssl/libcrypto might be
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located. Aside from linking, it actually tries to run the
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executable before concluding that the linking "worked".
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2001-05-16 Csaba Raduly <csaba.raduly@sophos.com>
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* windows/Makefile.watcom: Make linker accept space-separated list
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145
configure.in
145
configure.in
@ -193,41 +193,134 @@ then
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AC_CHECK_LIB(socks, Rconnect)
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fi
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dnl If --with-ssl was specified, make sure we can link with the OpenSSL libs.
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dnl OpenSSL is a third-party library, which makes checking for it a
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dnl pain. Before proceeding, we need to figure out whether to use the
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dnl `-R' flag.
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dnl Try to autodetect runtime library flag (usually -R), and whether
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dnl it works (or at least does no harm). Note that this is used
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dnl merely for the configure test below. The actual linking is
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dnl performed by libtool. Wouldn't it be nice if libtool also
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dnl provided "querying" that we need in configure?
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AC_MSG_CHECKING("for runtime libraries flag")
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case "$opsys" in
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sol2 ) dash_r="-R" ;;
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decosf* | linux* | irix*) dash_r="-rpath " ;;
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*)
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dash_r=""
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for try_dash_r in "-R" "-R " "-rpath "; do
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OLD_LDFLAGS=$LDFLAGS
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LDFLAGS="${try_dash_r}/no/such/file-or-directory $LDFLAGS"
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AC_TRY_LINK(, , dash_r="$try_dash_r")
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LDFLAGS=$ODL_LDFLAGS
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test -n "$dash_r" && break
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done ;;
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esac
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if test -n "$dash_r";
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then AC_MSG_RESULT("\"${dash_r}\"")
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else AC_MSG_RESULT(NONE)
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fi
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dnl If --with-ssl was specified, make sure we can link with the
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dnl OpenSSL libs. We should probably auto-detect this by default.
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if test x"$with_ssl" != x -a x"$with_ssl" != x"no"; then
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if test x"$with_ssl" = x"yes"; then
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dnl OpenSSL's default install location:
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with_ssl=/usr/local/ssl
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dnl OpenSSL's default install location is "/usr/local/ssl". We also
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dnl allow /usr/local for regular-style install, and /usr for Linux
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dnl stuff.
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ssl_all_roots="default /usr/local/ssl /usr/local /opt"
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else
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dnl Root has been kindly provided by the user.
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ssl_all_roots=$with_ssl
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fi
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SSL_INCLUDES=-I$with_ssl/include
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AC_SUBST(SSL_INCLUDES)
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LDFLAGS="-L$with_ssl/lib -R$with_ssl/lib $LDFLAGS"
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OLD_LIBS=$LIBS
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OLD_LDFLAGS=$LDFLAGS
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ssl_link_failure=no
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dnl Unfortunately, as of this writing (OpenSSL 0.9.6), the libcrypto shared
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dnl library doesn't record its dependency on libdl, so we need to check for it
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dnl ourselves so we won't fail to link due to a lack of -ldl. Most OSes use
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dnl dlopen(), but HP-UX uses shl_load().
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dnl Unfortunately, as of this writing (OpenSSL 0.9.6), the libcrypto
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dnl shared library doesn't record its dependency on libdl, so we
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dnl need to check for it ourselves so we won't fail to link due to a
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dnl lack of -ldl. Most OSes use dlopen(), but HP-UX uses
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dnl shl_load().
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AC_CHECK_LIB(dl,dlopen)
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AC_CHECK_LIB(dl,shl_load)
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dnl These checks need to be in this order, or you'll get a link failure if you
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dnl use a static libcrypto.a and libssl.a rather than shared libraries.
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AC_CHECK_LIB(crypto,RSA_new,,ssl_link_failure=yes)
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AC_CHECK_LIB(ssl,SSL_new,,ssl_link_failure=yes)
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ssl_linked=no
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if test x"$ssl_link_failure" = x"yes"; then
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dnl Now try to find SSL libraries in each of the likely SSL roots.
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for ssl_root in $ssl_all_roots
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do
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LIBS=$OLD_LIBS
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if test x"$ssl_root" = xdefault; then
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dnl Try the default library locations.
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SSL_INCLUDES=
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LDFLAGS=$OLD_LDFLAGS
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else
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dnl Try this specific root.
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SSL_INCLUDES=-I$ssl_root/include
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SSL_DASH_L="-L$ssl_root/lib"
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SSL_DASH_R=
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dnl Only use -R<foo> on systems which support a -R variant.
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if test x"$dash_r" != x; then
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SSL_DASH_R="${dash_r}$ssl_root/lib"
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fi
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LDFLAGS="$SSL_DASH_L $SSL_DASH_R $OLD_LDFLAGS"
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fi
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ssl_link_failure=no
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AC_MSG_RESULT(["Looking for SSL libraries in $ssl_root"])
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dnl Make sure that the checks don't run afoul of the cache. It
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dnl would be nicer to temporarily turn off the cache, but
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dnl apparently Autoconf doesn't allow that.
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unset ac_cv_lib_crypto_RSA_new
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unset ac_cv_lib_ssl_SSL_new
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dnl These checks need to be in this order, or you'll get a link
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dnl failure if you use a static libcrypto.a and libssl.a rather
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dnl than shared libraries.
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AC_CHECK_LIB(crypto,RSA_new,,ssl_link_failure=yes)
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AC_CHECK_LIB(ssl,SSL_new,,ssl_link_failure=yes)
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dnl echo $LDFLAGS
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if test x"$ssl_link_failure" = xno; then
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dnl Now try to run the thing.
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AC_MSG_CHECKING("whether runtime linking works")
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AC_TRY_RUN([
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char RSA_new();
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char SSL_new();
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main(){return 0;}
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], AC_MSG_RESULT("yes"), AC_MSG_RESULT("no"); ssl_link_failure=yes)
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fi
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if test x"$ssl_link_failure" = xno; then
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dnl This echo doesn't look right, but I'm not sure what to use
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dnl instead.
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AC_MSG_RESULT("Compiling in support for SSL in $ssl_root")
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AC_DEFINE(HAVE_SSL)
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AC_SUBST(SSL_INCLUDES)
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SSL_OBJ='gen_sslfunc$o'
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AC_SUBST(SSL_OBJ)
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ssl_linked=yes
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break
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fi
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done
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if test x"$ssl_linked" = xno; then
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LD_FLAGS=$OLD_LDFLAGS
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LIBS=$OLD_LIBS
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dnl Perhaps we should abort here. Remember that the user
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dnl explicitly requested linking with SSL.
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echo
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echo "WARNING: Failed to link with OpenSSL libraries in $with_ssl/lib."
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echo "WARNING: Failed to link with OpenSSL libraries in $ssl_root/lib."
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echo " Wget will be built without support for https://... URLs."
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echo
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else
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AC_DEFINE(HAVE_SSL)
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SSL_OBJ='gen_sslfunc$o'
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AC_SUBST(SSL_OBJ)
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fi
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fi
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@ -236,8 +329,10 @@ dnl Set of available languages.
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dnl
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ALL_LINGUAS=`(cd ${srcdir}/po && ls *.po | sed -e 's/\.po$//')`
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dnl Original from autoconf, I think.
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dnl ALL_LINGUAS="cs de hr it no pl pt_BR ru"
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dnl Originally this used to be static, looking like this:
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dnl ALL_LINGUAS="cs de hr it ..."
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dnl The downside was that configure needed to be rebuilt whenever a
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dnl new language was added.
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dnl internationalization macros
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WGET_WITH_NLS
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