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124 lines
4.1 KiB
124 lines
4.1 KiB
# =========================================================================== |
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# http://www.gnu.org/software/autoconf-archive/ax_check_openssl.html |
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# =========================================================================== |
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# |
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# SYNOPSIS |
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# |
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# AX_CHECK_OPENSSL([action-if-found[, action-if-not-found]]) |
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# |
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# DESCRIPTION |
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# |
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# Look for OpenSSL in a number of default spots, or in a user-selected |
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# spot (via --with-openssl). Sets |
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# |
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# OPENSSL_INCLUDES to the include directives required |
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# OPENSSL_LIBS to the -l directives required |
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# OPENSSL_LDFLAGS to the -L or -R flags required |
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# |
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# and calls ACTION-IF-FOUND or ACTION-IF-NOT-FOUND appropriately |
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# |
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# This macro sets OPENSSL_INCLUDES such that source files should use the |
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# openssl/ directory in include directives: |
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# |
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# #include <openssl/hmac.h> |
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# |
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# LICENSE |
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# |
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# Copyright (c) 2009, 2010 Zmanda Inc. <http://www.zmanda.com/> |
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# Copyright (c) 2009, 2010 Dustin J. Mitchell <dustin@zmanda.com> |
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# |
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# Copying and distribution of this file, with or without modification, are |
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# permitted in any medium without royalty provided the copyright notice |
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# and this notice are preserved. This file is offered as-is, without any |
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# warranty. |
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#serial 6 |
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AU_ALIAS([CHECK_SSL], [AX_CHECK_OPENSSL]) |
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AC_DEFUN([AX_CHECK_OPENSSL], [ |
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found=false |
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AC_ARG_WITH(openssl, |
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AS_HELP_STRING([--with-openssl=DIR], |
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[root of the OpenSSL directory]), |
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[ |
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case "$withval" in |
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"" | y | ye | yes | n | no) |
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AC_MSG_ERROR([Invalid --with-openssl value]) |
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;; |
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*) ssldirs="$withval" |
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;; |
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esac |
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], [ |
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# if pkg-config is installed and openssl has installed a .pc file, |
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# then use that information and don't search ssldirs |
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AC_PATH_PROG(PKG_CONFIG, pkg-config) |
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if test x"$PKG_CONFIG" != x""; then |
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OPENSSL_LDFLAGS=`$PKG_CONFIG openssl --libs-only-L 2>/dev/null` |
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if test $? = 0; then |
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OPENSSL_LIBS=`$PKG_CONFIG openssl --libs-only-l 2>/dev/null` |
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OPENSSL_INCLUDES=`$PKG_CONFIG openssl --cflags-only-I 2>/dev/null` |
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found=true |
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fi |
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fi |
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# no such luck; use some default ssldirs |
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if ! $found; then |
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ssldirs="/usr/local/ssl /usr/lib/ssl /usr/ssl /usr/pkg /usr/local /usr" |
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fi |
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] |
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) |
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# note that we #include <openssl/foo.h>, so the OpenSSL headers have to be in |
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# an 'openssl' subdirectory |
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if ! $found; then |
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OPENSSL_INCLUDES= |
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for ssldir in $ssldirs; do |
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AC_MSG_CHECKING([for openssl/ssl.h in $ssldir]) |
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if test -f "$ssldir/include/openssl/ssl.h"; then |
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OPENSSL_INCLUDES="-I$ssldir/include" |
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OPENSSL_LDFLAGS="-L$ssldir/lib" |
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OPENSSL_LIBS="-lssl -lcrypto" |
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found=true |
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AC_MSG_RESULT([yes]) |
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break |
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else |
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AC_MSG_RESULT([no]) |
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fi |
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done |
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# if the file wasn't found, well, go ahead and try the link anyway -- maybe |
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# it will just work! |
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fi |
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# try the preprocessor and linker with our new flags, |
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# being careful not to pollute the global LIBS, LDFLAGS, and CPPFLAGS |
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AC_MSG_CHECKING([whether compiling and linking against OpenSSL works]) |
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echo "Trying link with OPENSSL_LDFLAGS=$OPENSSL_LDFLAGS;" \ |
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"OPENSSL_LIBS=$OPENSSL_LIBS; OPENSSL_INCLUDES=$OPENSSL_INCLUDES" >&AS_MESSAGE_LOG_FD |
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save_LIBS="$LIBS" |
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save_LDFLAGS="$LDFLAGS" |
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save_CPPFLAGS="$CPPFLAGS" |
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LDFLAGS="$LDFLAGS $OPENSSL_LDFLAGS" |
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LIBS="$OPENSSL_LIBS $LIBS" |
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CPPFLAGS="$OPENSSL_INCLUDES $CPPFLAGS" |
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AC_LINK_IFELSE( |
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AC_LANG_PROGRAM([#include <openssl/ssl.h>], [SSL_new(NULL)]), |
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[ |
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AC_MSG_RESULT([yes]) |
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$1 |
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], [ |
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AC_MSG_RESULT([no]) |
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$2 |
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]) |
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CPPFLAGS="$save_CPPFLAGS" |
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LDFLAGS="$save_LDFLAGS" |
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LIBS="$save_LIBS" |
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AC_SUBST([OPENSSL_INCLUDES]) |
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AC_SUBST([OPENSSL_LIBS]) |
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AC_SUBST([OPENSSL_LDFLAGS]) |
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])
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