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automake, ssl: real openssl detection, fix ssl linkage w/NSS
This change mainly intends to prevent linking with libssl when the crypto provider is NSS, which provides an SSL implementation (the implementation we must use and prefer when NSS is selected). Secondarily, actually detect openssl when it is selected, which happens by default and co-selects with cryptopp. To do this, we import the ax_check_openssl.m4 from the automake archive. Signed-off-by: Matt Benjamin <mbenjamin@redhat.com>
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,124 @@ | ||
| # =========================================================================== | ||
| # http://www.gnu.org/software/autoconf-archive/ax_check_openssl.html | ||
| # =========================================================================== | ||
| # | ||
| # SYNOPSIS | ||
| # | ||
| # AX_CHECK_OPENSSL([action-if-found[, action-if-not-found]]) | ||
| # | ||
| # DESCRIPTION | ||
| # | ||
| # Look for OpenSSL in a number of default spots, or in a user-selected | ||
| # spot (via --with-openssl). Sets | ||
| # | ||
| # OPENSSL_INCLUDES to the include directives required | ||
| # OPENSSL_LIBS to the -l directives required | ||
| # OPENSSL_LDFLAGS to the -L or -R flags required | ||
| # | ||
| # and calls ACTION-IF-FOUND or ACTION-IF-NOT-FOUND appropriately | ||
| # | ||
| # This macro sets OPENSSL_INCLUDES such that source files should use the | ||
| # openssl/ directory in include directives: | ||
| # | ||
| # #include <openssl/hmac.h> | ||
| # | ||
| # LICENSE | ||
| # | ||
| # Copyright (c) 2009,2010 Zmanda Inc. <http://www.zmanda.com/> | ||
| # Copyright (c) 2009,2010 Dustin J. Mitchell <dustin@zmanda.com> | ||
| # | ||
| # Copying and distribution of this file, with or without modification, are | ||
| # permitted in any medium without royalty provided the copyright notice | ||
| # and this notice are preserved. This file is offered as-is, without any | ||
| # warranty. | ||
|
|
||
| #serial 8 | ||
|
|
||
| AU_ALIAS([CHECK_SSL], [AX_CHECK_OPENSSL]) | ||
| AC_DEFUN([AX_CHECK_OPENSSL], [ | ||
| found=false | ||
| AC_ARG_WITH([openssl], | ||
| [AS_HELP_STRING([--with-openssl=DIR], | ||
| [root of the OpenSSL directory])], | ||
| [ | ||
| case "$withval" in | ||
| "" | y | ye | yes | n | no) | ||
| AC_MSG_ERROR([Invalid --with-openssl value]) | ||
| ;; | ||
| *) ssldirs="$withval" | ||
| ;; | ||
| esac | ||
| ], [ | ||
| # if pkg-config is installed and openssl has installed a .pc file, | ||
| # then use that information and don't search ssldirs | ||
| AC_PATH_PROG([PKG_CONFIG], [pkg-config]) | ||
| if test x"$PKG_CONFIG" != x""; then | ||
| OPENSSL_LDFLAGS=`$PKG_CONFIG openssl --libs-only-L 2>/dev/null` | ||
| if test $? = 0; then | ||
| OPENSSL_LIBS=`$PKG_CONFIG openssl --libs-only-l 2>/dev/null` | ||
| OPENSSL_INCLUDES=`$PKG_CONFIG openssl --cflags-only-I 2>/dev/null` | ||
| found=true | ||
| fi | ||
| fi | ||
| # no such luck; use some default ssldirs | ||
| if ! $found; then | ||
| ssldirs="/usr/local/ssl /usr/lib/ssl /usr/ssl /usr/pkg /usr/local /usr" | ||
| fi | ||
| ] | ||
| ) | ||
| # note that we #include <openssl/foo.h>, so the OpenSSL headers have to be in | ||
| # an 'openssl' subdirectory | ||
| if ! $found; then | ||
| OPENSSL_INCLUDES= | ||
| for ssldir in $ssldirs; do | ||
| AC_MSG_CHECKING([for openssl/ssl.h in $ssldir]) | ||
| if test -f "$ssldir/include/openssl/ssl.h"; then | ||
| OPENSSL_INCLUDES="-I$ssldir/include" | ||
| OPENSSL_LDFLAGS="-L$ssldir/lib" | ||
| OPENSSL_LIBS="-lssl -lcrypto" | ||
| found=true | ||
| AC_MSG_RESULT([yes]) | ||
| break | ||
| else | ||
| AC_MSG_RESULT([no]) | ||
| fi | ||
| done | ||
| # if the file wasn't found, well, go ahead and try the link anyway -- maybe | ||
| # it will just work! | ||
| fi | ||
| # try the preprocessor and linker with our new flags, | ||
| # being careful not to pollute the global LIBS, LDFLAGS, and CPPFLAGS | ||
| AC_MSG_CHECKING([whether compiling and linking against OpenSSL works]) | ||
| echo "Trying link with OPENSSL_LDFLAGS=$OPENSSL_LDFLAGS;" \ | ||
| "OPENSSL_LIBS=$OPENSSL_LIBS; OPENSSL_INCLUDES=$OPENSSL_INCLUDES" >&AS_MESSAGE_LOG_FD | ||
| save_LIBS="$LIBS" | ||
| save_LDFLAGS="$LDFLAGS" | ||
| save_CPPFLAGS="$CPPFLAGS" | ||
| LDFLAGS="$LDFLAGS $OPENSSL_LDFLAGS" | ||
| LIBS="$OPENSSL_LIBS $LIBS" | ||
| CPPFLAGS="$OPENSSL_INCLUDES $CPPFLAGS" | ||
| AC_LINK_IFELSE( | ||
| [AC_LANG_PROGRAM([#include <openssl/ssl.h>], [SSL_new(NULL)])], | ||
| [ | ||
| AC_MSG_RESULT([yes]) | ||
| $1 | ||
| ], [ | ||
| AC_MSG_RESULT([no]) | ||
| $2 | ||
| ]) | ||
| CPPFLAGS="$save_CPPFLAGS" | ||
| LDFLAGS="$save_LDFLAGS" | ||
| LIBS="$save_LIBS" | ||
| AC_SUBST([OPENSSL_INCLUDES]) | ||
| AC_SUBST([OPENSSL_LIBS]) | ||
| AC_SUBST([OPENSSL_LDFLAGS]) | ||
| ]) |
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