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-rw-r--r--m4/ax_check_openssl.m4124
-rw-r--r--m4/check-libc.m436
-rw-r--r--m4/check-os-options.m45
3 files changed, 126 insertions, 39 deletions
diff --git a/m4/ax_check_openssl.m4 b/m4/ax_check_openssl.m4
new file mode 100644
index 0000000..ce1617c
--- /dev/null
+++ b/m4/ax_check_openssl.m4
@@ -0,0 +1,124 @@
+# ===========================================================================
+#     https://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 11
+
+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_CHECK_TOOL([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 include/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])
+])
diff --git a/m4/check-libc.m4 b/m4/check-libc.m4
index e511f6d..2ca08a5 100644
--- a/m4/check-libc.m4
+++ b/m4/check-libc.m4
@@ -1,12 +1,10 @@
 AC_DEFUN([CHECK_LIBC_COMPAT], [
-# Check for libc headers
-AC_CHECK_HEADERS([err.h readpassphrase.h])
 # Check for general libc functions
 AC_CHECK_FUNCS([asprintf freezero memmem])
-AC_CHECK_FUNCS([readpassphrase reallocarray recallocarray])
+AC_CHECK_FUNCS([reallocarray recallocarray])
 AC_CHECK_FUNCS([strlcat strlcpy strndup strnlen strsep strtonum])
 AC_CHECK_FUNCS([timegm _mkgmtime timespecsub])
-AC_CHECK_FUNCS([getprogname syslog syslog_r])
+AC_CHECK_FUNCS([getprogname])
 AC_CACHE_CHECK([for getpagesize], ac_cv_func_getpagesize, [
 	AC_LINK_IFELSE([AC_LANG_PROGRAM([[
 // Since Android NDK v16 getpagesize is defined as inline inside unistd.h
@@ -24,7 +22,6 @@ AM_CONDITIONAL([HAVE_ASPRINTF], [test "x$ac_cv_func_asprintf" = xyes])
 AM_CONDITIONAL([HAVE_FREEZERO], [test "x$ac_cv_func_freezero" = xyes])
 AM_CONDITIONAL([HAVE_GETPAGESIZE], [test "x$ac_cv_func_getpagesize" = xyes])
 AM_CONDITIONAL([HAVE_MEMMEM], [test "x$ac_cv_func_memmem" = xyes])
-AM_CONDITIONAL([HAVE_READPASSPHRASE], [test "x$ac_cv_func_readpassphrase" = xyes])
 AM_CONDITIONAL([HAVE_REALLOCARRAY], [test "x$ac_cv_func_reallocarray" = xyes])
 AM_CONDITIONAL([HAVE_RECALLOCARRAY], [test "x$ac_cv_func_recallocarray" = xyes])
 AM_CONDITIONAL([HAVE_STRLCAT], [test "x$ac_cv_func_strlcat" = xyes])
@@ -35,35 +32,6 @@ AM_CONDITIONAL([HAVE_STRSEP], [test "x$ac_cv_func_strsep" = xyes])
 AM_CONDITIONAL([HAVE_STRTONUM], [test "x$ac_cv_func_strtonum" = xyes])
 AM_CONDITIONAL([HAVE_TIMEGM], [test "x$ac_cv_func_timegm" = xyes])
 AM_CONDITIONAL([HAVE_GETPROGNAME], [test "x$ac_cv_func_getprogname" = xyes])
-AM_CONDITIONAL([HAVE_SYSLOG], [test "x$ac_cv_func_syslog" = xyes])
-AM_CONDITIONAL([HAVE_SYSLOG_R], [test "x$ac_cv_func_syslog_r" = xyes])
-])
-
-AC_DEFUN([CHECK_SYSCALL_COMPAT], [
-AC_CHECK_FUNCS([accept4 pipe2 pledge poll socketpair])
-AM_CONDITIONAL([HAVE_ACCEPT4], [test "x$ac_cv_func_accept4" = xyes])
-AM_CONDITIONAL([HAVE_PIPE2], [test "x$ac_cv_func_pipe2" = xyes])
-AM_CONDITIONAL([HAVE_PLEDGE], [test "x$ac_cv_func_pledge" = xyes])
-AM_CONDITIONAL([HAVE_POLL], [test "x$ac_cv_func_poll" = xyes])
-AM_CONDITIONAL([HAVE_SOCKETPAIR], [test "x$ac_cv_func_socketpair" = xyes])
-])
-
-AC_DEFUN([CHECK_B64_NTOP], [
-AC_SEARCH_LIBS([b64_ntop],[resolv])
-AC_SEARCH_LIBS([__b64_ntop],[resolv])
-AC_CACHE_CHECK([for b64_ntop], ac_cv_have_b64_ntop_arg, [
-	AC_LINK_IFELSE([AC_LANG_PROGRAM([[
-#include <sys/types.h>
-#include <sys/socket.h>
-#include <netinet/in.h>
-#include <arpa/inet.h>
-#include <resolv.h>
-		]], [[ b64_ntop(NULL, 0, NULL, 0); ]])],
-	[ ac_cv_have_b64_ntop_arg="yes" ],
-	[ ac_cv_have_b64_ntop_arg="no"
-	])
-])
-AM_CONDITIONAL([HAVE_B64_NTOP], [test "x$ac_cv_func_b64_ntop_arg" = xyes])
 ])
 
 AC_DEFUN([CHECK_CRYPTO_COMPAT], [
diff --git a/m4/check-os-options.m4 b/m4/check-os-options.m4
index 8241aee..6913790 100644
--- a/m4/check-os-options.m4
+++ b/m4/check-os-options.m4
@@ -123,11 +123,6 @@ char buf[1]; getentropy(buf, 1);
 	*) ;;
 esac
 
-AC_ARG_ENABLE([nc],
-	AS_HELP_STRING([--enable-nc], [Enable installing TLS-enabled nc(1)]))
-AM_CONDITIONAL([ENABLE_NC], [test "x$enable_nc" = xyes])
-AM_CONDITIONAL([BUILD_NC],  [test x$BUILD_NC = xyes -o "x$enable_nc" = xyes])
-
 AM_CONDITIONAL([HOST_AIX],     [test x$HOST_OS = xaix])
 AM_CONDITIONAL([HOST_CYGWIN],  [test x$HOST_OS = xcygwin])
 AM_CONDITIONAL([HOST_DARWIN],  [test x$HOST_OS = xdarwin])