- Configure caching and cleanup patch from Andre Lucas'

   <andre.lucas@dial.pipex.com>

3 files changed, 266 insertions, 238 deletions

diff --git a/ChangeLog b/ChangeLog
index a525273d2..e3f5c71d9 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -9,6 +9,9 @@
     - interop w/ SecureFX
  - Release 2.0.0beta2
 
+ - Configure caching and cleanup patch from Andre Lucas' 
+   <andre.lucas@dial.pipex.com>
+
 20000507
  - Remove references to SSLeay.
  - Big OpenBSD CVS update
diff --git a/aclocal.m4 b/aclocal.m4
index 65783346b..16345e122 100644
--- a/aclocal.m4
+++ b/aclocal.m4
@@ -1,15 +1,45 @@
-dnl $Id: aclocal.m4,v 1.1 2000/05/01 23:57:51 damien Exp $
+dnl $Id: aclocal.m4,v 1.2 2000/05/08 10:49:37 damien Exp $
 dnl
 dnl OpenSSH-specific autoconf macros
 dnl
 
-dnl AC_PATH_ENTROPY_PROG(variablename, command):
+
+dnl OSSH_CHECK_HEADER_FOR_FIELD(field, header, symbol)
+dnl Does AC_EGREP_HEADER on 'header' for the string 'field'
+dnl If found, set 'symbol' to be defined. Cache the result.
+dnl TODO: This is not foolproof, better to compile and read from there
+AC_DEFUN(OSSH_CHECK_HEADER_FOR_FIELD, [
+# look for field '$1' in header '$2'
+        dnl This strips characters illegal to m4 from the header filename
+        ossh_safe=`echo "$2" | sed 'y%./+-%__p_%'`
+        dnl
+        ossh_varname="ossh_cv_$ossh_safe""_has_"$1
+        AC_MSG_CHECKING(for $1 field in $2)
+        AC_CACHE_VAL($ossh_varname, [
+                AC_EGREP_HEADER($1, $2, [ dnl
+                        eval "$ossh_varname=yes" dnl
+                ], [ dnl
+                        eval "$ossh_varname=no" dnl
+                ]) dnl
+        ])
+        ossh_result=`eval "echo "$"$ossh_varname"`
+        if test -n "`echo $ossh_varname`"; then
+                AC_MSG_RESULT($ossh_result)
+                if test "x$ossh_result" = "xyes"; then
+                        AC_DEFINE($3)
+                fi
+        else
+                AC_MSG_RESULT(no)
+        fi
+])
+
+dnl OSSH_PATH_ENTROPY_PROG(variablename, command):
 dnl Tidiness function, sets 'undef' if not found, and does the AC_SUBST
-AC_DEFUN(AC_PATH_ENTROPY_PROG, [
-        AC_PATH_PROG([$1], [$2])
+AC_DEFUN(OSSH_PATH_ENTROPY_PROG, [
+        AC_PATH_PROG($1, $2)
         if test -z "[$]$1" ; then
                 $1="undef"
         fi
-        AC_SUBST([$1])
+        AC_SUBST($1)
 ])
 
diff --git a/configure.in b/configure.in
index 1b099c6b8..ef8495200 100644
--- a/configure.in
+++ b/configure.in
@@ -196,28 +196,29 @@ saved_CFLAGS="$CFLAGS"
 if test "x$prefix" != "xNONE" ; then
         tryssldir="$tryssldir $prefix"
 fi
-AC_MSG_CHECKING([for OpenSSL directory])
-for ssldir in "" $tryssldir /usr/local/openssl /usr/lib/openssl /usr/local/ssl /usr/lib/ssl /usr/local /usr/pkg /opt /opt/openssl ; do
-        if test ! -z "$ssldir" ; then
-                LDFLAGS="$saved_LDFLAGS -L$ssldir/lib -L$ssldir"
-                CFLAGS="$saved_CFLAGS -I$ssldir/include"
-                if test ! -z "$need_dash_r" ; then
-                        LDFLAGS="$LDFLAGS -R$ssldir/lib -R$ssldir"
+AC_CACHE_CHECK([for OpenSSL directory], ac_cv_openssldir, [
+
+        for ssldir in "" $tryssldir /usr/local/openssl /usr/lib/openssl /usr/local/ssl /usr/lib/ssl /usr/local /usr/pkg /opt /opt/openssl ; do
+                if test ! -z "$ssldir" ; then
+                        LDFLAGS="$saved_LDFLAGS -L$ssldir/lib -L$ssldir"
+                        CFLAGS="$saved_CFLAGS -I$ssldir/include"
+                        if test ! -z "$need_dash_r" ; then
+                                LDFLAGS="$LDFLAGS -R$ssldir/lib -R$ssldir"
+                        fi
+                else
+                        LDFLAGS="$saved_LDFLAGS"
                 fi
-        else
-                LDFLAGS="$saved_LDFLAGS"
-        fi
 
-        for WANTS_RSAREF in "" 1 ; do
+                for WANTS_RSAREF in "" 1 ; do
                 
-                if test -z "$WANTS_RSAREF" ; then
-                        LIBS="$saved_LIBS -lcrypto"
-                else
-                        LIBS="$saved_LIBS -lcrypto -lRSAglue -lrsaref"
-                fi
+                        if test -z "$WANTS_RSAREF" ; then
+                                LIBS="$saved_LIBS -lcrypto"
+                        else
+                                LIBS="$saved_LIBS -lcrypto -lRSAglue -lrsaref"
+                        fi
 
-                AC_TRY_RUN(
-                        [
+                        AC_TRY_RUN(
+                                [
 #include <string.h>
 #include <openssl/rand.h>
 #include <openssl/rsa.h>
@@ -232,26 +233,33 @@ int main(void)
         if (key==NULL) return(1);
         return(-1==RSA_private_decrypt(RSA_size(key),a,b,key,RSA_NO_PADDING));
 }
-                        ],
-                        [
-                                AC_DEFINE(HAVE_OPENSSL)
-                                found_crypto=1
-                                break;
-                        ], []
-                )
+                                ],
+                                [
+                                        found_crypto=1
+                                        break;
+                                ], []
+                        )
+                done
+
+                if test ! -z "$found_crypto" ; then
+                        break;
+                fi
         done
 
-        if test ! -z "$found_crypto" ; then
-                break;
+        if test -z "$found_crypto" ; then
+                AC_MSG_ERROR([Could not find working SSLeay / OpenSSL libraries, please install])       
+        fi
+        if test -z "$ssldir" ; then
+                ssldir="(system)"
         fi
-done
 
-if test -z "$found_crypto" ; then
-        AC_MSG_ERROR([Could not find working SSLeay / OpenSSL libraries, please install])       
-fi
-if test -z "$ssldir" ; then
-        ssldir="(system)"
-else
+        ac_cv_openssldir=$ssldir
+])
+
+if test ! -z "$ac_cv_openssldir" -a ! "x$ac_cv_openssldir" = "x(system)" ; then
+        AC_DEFINE(HAVE_OPENSSL)
+        dnl Need to recover ssldir - test above runs in subshell
+        ssldir=$ac_cv_openssldir
         CFLAGS="$saved_CFLAGS -I$ssldir/include"
         LDFLAGS="$saved_LDFLAGS -L$ssldir/lib -L$ssldir"
         if test ! -z "$need_dash_r" ; then
@@ -266,7 +274,7 @@ if test -z "$WANTS_RSAREF" ; then
 else
         LIBS="$saved_LIBS -lcrypto -lRSAglue -lrsaref"
 fi
-AC_MSG_RESULT($ssldir)
+
 
 # Checks for data types
 AC_CHECK_SIZEOF(char, 1)
@@ -276,36 +284,41 @@ AC_CHECK_SIZEOF(long int, 4)
 AC_CHECK_SIZEOF(long long int, 8)
 
 # More checks for data types
-AC_MSG_CHECKING([for intXX_t types])
-AC_TRY_COMPILE(
-        [#include <sys/types.h>], 
-        [int8_t a; int16_t b; int32_t c; a = b = c = 1;], 
-        [
-                AC_DEFINE(HAVE_INTXX_T)
-                AC_MSG_RESULT(yes)
-                have_intxx_t=1
-        ],
-        [AC_MSG_RESULT(no)]
-) 
+AC_CACHE_CHECK([for intXX_t types], ac_cv_have_intxx_t, [
+        AC_TRY_COMPILE(
+                [ #include <sys/types.h> ], 
+                [ int8_t a; int16_t b; int32_t c; a = b = c = 1;], 
+                [ ac_cv_have_intxx_t="yes" ],
+                [ ac_cv_have_intxx_t="no" ]
+        )
+])
+if test "x$ac_cv_have_intxx_t" = "xyes" ; then
+        AC_DEFINE(HAVE_INTXX_T)
+        have_intxx_t=1
+fi
+        
+AC_CACHE_CHECK([for u_intXX_t types], ac_cv_have_u_intxx_t, [
+        AC_TRY_COMPILE(
+                [ #include <sys/types.h> ], 
+                [ u_int8_t a; u_int16_t b; u_int32_t c; a = b = c = 1;], 
+                [ ac_cv_have_u_intxx_t="yes" ],
+                [ ac_cv_have_u_intxx_t="no" ]
+        )
+])
+if test "x$ac_cv_have_u_intxx_t" = "xyes" ; then
+        AC_DEFINE(HAVE_U_INTXX_T)
+        have_u_intxx_t=1
+fi
 
-AC_MSG_CHECKING([for u_intXX_t types])
-AC_TRY_COMPILE(
-        [#include <sys/types.h>], 
-        [u_int8_t a; u_int16_t b; u_int32_t c; a = b = c = 1;], 
-        [
-                AC_DEFINE(HAVE_U_INTXX_T)
-                AC_MSG_RESULT(yes)
-                have_u_intxx_t=1
-        ],
-        [AC_MSG_RESULT(no)]
-) 
 
 if test -z "$have_u_intxx_t" -o -z "$have_intxx_t" -a \
            "x$ac_cv_header_sys_bitypes_h" = "xyes"
 then
         AC_MSG_CHECKING([for intXX_t and u_intXX_t types in sys/bitypes.h])
         AC_TRY_COMPILE(
-                [#include <sys/bitypes.h>], 
+                [
+#include <sys/bitypes.h>
+                ], 
                 [
                         int8_t a; int16_t b; int32_t c;
                         u_int8_t e; u_int16_t f; u_int32_t g;
@@ -321,189 +334,171 @@ then
 fi
 
 if test -z "$have_u_intxx_t" ; then
-        AC_MSG_CHECKING([for uintXX_t types])
+        AC_CACHE_CHECK([for uintXX_t types], ac_cv_have_uintxx_t, [
+                AC_TRY_COMPILE(
+                        [
+#include <sys/types.h>
+                        ], 
+                        [ uint8_t a; uint16_t b; uint32_t c; a = b = c = 1; ], 
+                        [ ac_cv_have_uintxx_t="yes" ],
+                        [ ac_cv_have_uintxx_t="no" ]
+                )
+        ])
+        if test "x$ac_cv_have_uintxx_t" = "xyes" ; then
+                AC_DEFINE(HAVE_UINTXX_T)
+        fi
+fi
+
+AC_CACHE_CHECK([for socklen_t], ac_cv_have_socklen_t, [
         AC_TRY_COMPILE(
-                [#include <sys/types.h>], 
-                [uint8_t a; uint16_t b; uint32_t c; a = b = c = 1;], 
                 [
-                        AC_DEFINE(HAVE_UINTXX_T)
-                        AC_MSG_RESULT(yes)
+#include <sys/types.h>
+#include <sys/socket.h>
                 ],
-                [AC_MSG_RESULT(no)]
-        ) 
+                [socklen_t foo; foo = 1235;],
+                [ ac_cv_have_socklen_t="yes" ],
+                [ ac_cv_have_socklen_t="no" ]
+        )
+])
+if test "x$ac_cv_have_socklen_t" = "xyes" ; then
+        AC_DEFINE(HAVE_SOCKLEN_T)
 fi
 
-AC_MSG_CHECKING([for socklen_t])
-AC_TRY_COMPILE(
-        [
+AC_CACHE_CHECK([for size_t], ac_cv_have_size_t, [
+        AC_TRY_COMPILE(
+                [
 #include <sys/types.h>
-#include <sys/socket.h>
-        ],
-        [socklen_t foo; foo = 1235;],
-        [
-                AC_DEFINE(HAVE_SOCKLEN_T)
-                AC_MSG_RESULT(yes)
-        ],
-        [AC_MSG_RESULT(no)]
-)
+                ],
+                [ size_t foo; foo = 1235; ],
+                [ ac_cv_have_size_t="yes" ],
+                [ ac_cv_have_size_t="no" ]
+        )
+])
+if test "x$ac_cv_have_size_t" = "xyes" ; then
+        AC_DEFINE(HAVE_SIZE_T)
+fi
 
-AC_MSG_CHECKING([for size_t])
-AC_TRY_COMPILE(
-        [#include <sys/types.h>],
-        [size_t foo; foo = 1235;],
-        [
-                AC_DEFINE(HAVE_SIZE_T)
-                AC_MSG_RESULT(yes)
-        ],
-        [AC_MSG_RESULT(no)]
-)
 
-AC_MSG_CHECKING([for struct sockaddr_storage])
-AC_TRY_COMPILE(
-        [
+AC_CACHE_CHECK([for struct sockaddr_storage], ac_cv_have_struct_sockaddr_storage, [
+        AC_TRY_COMPILE(
+                [
 #include <sys/types.h>
 #include <sys/socket.h>
-        ],
-        [struct sockaddr_storage s;],
-        [
-                AC_DEFINE(HAVE_STRUCT_SOCKADDR_STORAGE)
-                AC_MSG_RESULT(yes)
-        ],
-        [AC_MSG_RESULT(no)]
-)
+                ],
+                [ struct sockaddr_storage s; ],
+                [ ac_cv_have_struct_sockaddr_storage="yes" ],
+                [ ac_cv_have_struct_sockaddr_storage="no" ]
+        )
+])
+if test "x$ac_cv_have_struct_sockaddr_storage" = "xyes" ; then
+        AC_DEFINE(HAVE_STRUCT_SOCKADDR_STORAGE)
+fi
 
-AC_MSG_CHECKING([for struct sockaddr_in6])
-AC_TRY_COMPILE(
-        [#include <netinet/in.h>],
-        [struct sockaddr_in6 s; s.sin6_family = 0;],
-        [
-                AC_DEFINE(HAVE_STRUCT_SOCKADDR_IN6)
-                AC_MSG_RESULT(yes)
-        ],
-        [AC_MSG_RESULT(no)]
-)
+AC_CACHE_CHECK([for struct sockaddr_in6], ac_cv_have_struct_sockaddr_in6, [
+        AC_TRY_COMPILE(
+                [
+#include <netinet/in.h>
+                ],
+                [ struct sockaddr_in6 s; s.sin6_family = 0; ],
+                [ ac_cv_have_struct_sockaddr_in6="yes" ],
+                [ ac_cv_have_struct_sockaddr_in6="no" ]
+        )
+])
+if test "x$ac_cv_have_struct_sockaddr_in6" = "xyes" ; then
+        AC_DEFINE(HAVE_STRUCT_SOCKADDR_IN6)
+fi
 
-AC_MSG_CHECKING([for struct in6_addr])
-AC_TRY_COMPILE(
-        [#include <netinet/in.h>],
-        [struct in6_addr s; s.s6_addr[0] = 0;],
-        [
-                AC_DEFINE(HAVE_STRUCT_IN6_ADDR)
-                AC_MSG_RESULT(yes)
-        ],
-        [AC_MSG_RESULT(no)]
-)
+AC_CACHE_CHECK([for struct in6_addr], ac_cv_have_struct_in6_addr, [
+        AC_TRY_COMPILE(
+                [
+#include <netinet/in.h>
+                ],
+                [ struct in6_addr s; s.s6_addr[0] = 0; ],
+                [ ac_cv_have_struct_in6_addr="yes" ],
+                [ ac_cv_have_struct_in6_addr="no" ]
+        )
+])
+if test "x$ac_cv_have_struct_in6_addr" = "xyes" ; then
+        AC_DEFINE(HAVE_STRUCT_IN6_ADDR)
+fi
 
-AC_MSG_CHECKING([for struct addrinfo])
-AC_TRY_COMPILE(
-        [
+AC_CACHE_CHECK([for struct addrinfo], ac_cv_have_struct_addrinfo, [
+        AC_TRY_COMPILE(
+                [
 #include <sys/types.h>
 #include <sys/socket.h>
 #include <netdb.h>
-        ],
-        [struct addrinfo s; s.ai_flags = AI_PASSIVE;],
-        [
-                AC_DEFINE(HAVE_STRUCT_ADDRINFO)
-                AC_MSG_RESULT(yes)
-        ],
-        [AC_MSG_RESULT(no)]
-)
+                ],
+                [ struct addrinfo s; s.ai_flags = AI_PASSIVE; ],
+                [ ac_cv_have_struct_addrinfo="yes" ],
+                [ ac_cv_have_struct_addrinfo="no" ]
+        )
+])
+if test "x$ac_cv_have_struct_addrinfo" = "xyes" ; then
+        AC_DEFINE(HAVE_STRUCT_ADDRINFO)
+fi
+
 
 # Checks for structure members
-AC_MSG_CHECKING([whether utmp.h has ut_host field])
-AC_EGREP_HEADER(ut_host, utmp.h, 
-        [AC_DEFINE(HAVE_HOST_IN_UTMP) AC_MSG_RESULT(yes); ], 
-        [AC_MSG_RESULT(no)]
-)
-AC_MSG_CHECKING([whether utmpx.h has ut_host field])
-AC_EGREP_HEADER(ut_host, utmpx.h, 
-        [AC_DEFINE(HAVE_HOST_IN_UTMPX) AC_MSG_RESULT(yes); ], 
-        [AC_MSG_RESULT(no)]
-)
-AC_MSG_CHECKING([whether utmpx.h has syslen field])
-AC_EGREP_HEADER(syslen, utmpx.h, 
-        [AC_DEFINE(HAVE_SYSLEN_IN_UTMPX) AC_MSG_RESULT(yes); ], 
-        [AC_MSG_RESULT(no)]
-)
-AC_MSG_CHECKING([whether utmp.h has ut_pid field])
-AC_EGREP_HEADER(ut_pid, utmp.h, 
-        [AC_DEFINE(HAVE_PID_IN_UTMP) AC_MSG_RESULT(yes); ], 
-        [AC_MSG_RESULT(no)]
-)
-AC_MSG_CHECKING([whether utmp.h has ut_type field])
-AC_EGREP_HEADER(ut_type, utmp.h, 
-        [AC_DEFINE(HAVE_TYPE_IN_UTMP) AC_MSG_RESULT(yes); ], 
-        [AC_MSG_RESULT(no)]
-)
-AC_MSG_CHECKING([whether utmp.h has ut_tv field])
-AC_EGREP_HEADER(ut_tv, utmp.h, 
-        [AC_DEFINE(HAVE_TV_IN_UTMP) AC_MSG_RESULT(yes); ], 
-        [AC_MSG_RESULT(no)]
-)
-AC_MSG_CHECKING([whether utmp.h has ut_id field])
-AC_EGREP_HEADER(ut_id, utmp.h, 
-        [AC_DEFINE(HAVE_ID_IN_UTMP) AC_MSG_RESULT(yes); ], 
-        [AC_MSG_RESULT(no)]
-)
-AC_MSG_CHECKING([whether utmp.h has ut_addr field])
-AC_EGREP_HEADER(ut_addr, utmp.h, 
-        [AC_DEFINE(HAVE_ADDR_IN_UTMP) AC_MSG_RESULT(yes); ], 
-        [AC_MSG_RESULT(no)]
-)
-AC_MSG_CHECKING([whether utmpx.h has ut_addr field])
-AC_EGREP_HEADER(ut_addr, utmpx.h, 
-        [AC_DEFINE(HAVE_ADDR_IN_UTMPX) AC_MSG_RESULT(yes); ], 
-        [AC_MSG_RESULT(no)]
-)
-AC_MSG_CHECKING([whether utmp.h has ut_addr_v6 field])
-AC_EGREP_HEADER(ut_addr_v6, utmp.h, 
-        [AC_DEFINE(HAVE_ADDR_V6_IN_UTMP) AC_MSG_RESULT(yes); ], 
-        [AC_MSG_RESULT(no)]
-)
-AC_MSG_CHECKING([whether utmpx.h has ut_addr_v6 field])
-AC_EGREP_HEADER(ut_addr_v6, utmpx.h, 
-        [AC_DEFINE(HAVE_ADDR_V6_IN_UTMPX) AC_MSG_RESULT(yes); ], 
-        [AC_MSG_RESULT(no)]
-)
 
-AC_MSG_CHECKING([whether struct sockaddr_storage has ss_family field])
-AC_TRY_COMPILE(
-        [
+OSSH_CHECK_HEADER_FOR_FIELD(ut_host, utmp.h, HAVE_HOST_IN_UTMP)
+OSSH_CHECK_HEADER_FOR_FIELD(ut_host, utmpx.h, HAVE_HOST_IN_UTMPX)
+OSSH_CHECK_HEADER_FOR_FIELD(syslen, utmpx.h, HAVE_SYSLEN_IN_UTMPX)
+OSSH_CHECK_HEADER_FOR_FIELD(ut_pid, utmp.h, HAVE_PID_IN_UTMP)
+OSSH_CHECK_HEADER_FOR_FIELD(ut_type, utmp.h, HAVE_TYPE_IN_UTMP)
+OSSH_CHECK_HEADER_FOR_FIELD(ut_tv, utmp.h, HAVE_TV_IN_UTMP)
+OSSH_CHECK_HEADER_FOR_FIELD(ut_id, utmp.h, HAVE_ID_IN_UTMP)
+OSSH_CHECK_HEADER_FOR_FIELD(ut_addr, utmp.h, HAVE_ADDR_IN_UTMP)
+OSSH_CHECK_HEADER_FOR_FIELD(ut_addr, utmpx.h, HAVE_ADDR_IN_UTMPX)
+OSSH_CHECK_HEADER_FOR_FIELD(ut_addr_v6, utmp.h, HAVE_ADDR_V6_IN_UTMP)
+OSSH_CHECK_HEADER_FOR_FIELD(ut_addr_v6, utmpx.h, HAVE_ADDR_V6_IN_UTMPX)
+
+
+AC_CACHE_CHECK([for ss_family field in struct sockaddr_storage],
+                ac_cv_have_ss_family_in_struct_ss, [
+        AC_TRY_COMPILE(
+                [
 #include <sys/types.h>
 #include <sys/socket.h>
-        ],
-        [struct sockaddr_storage s; s.ss_family = 1;],
-        [
-                AC_DEFINE(HAVE_SS_FAMILY_IN_SS)
-                AC_MSG_RESULT(yes)
-        ],
-        [AC_MSG_RESULT(no)]
-)
-AC_MSG_CHECKING([whether struct sockaddr_storage has __ss_family field])
-AC_TRY_COMPILE(
-        [
+                ],
+                [ struct sockaddr_storage s; s.ss_family = 1; ],
+                [ ac_cv_have_ss_family_in_struct_ss="yes" ],
+                [ ac_cv_have_ss_family_in_struct_ss="no" ],
+        )
+])
+if test "x$ac_cv_have_ss_family_in_struct_ss" = "xyes" ; then
+        AC_DEFINE(HAVE_SS_FAMILY_IN_SS)
+fi
+
+
+AC_CACHE_CHECK([for __ss_family field in struct sockaddr_storage],
+                ac_cv_have___ss_family_in_struct_ss, [
+        AC_TRY_COMPILE(
+                [
 #include <sys/types.h>
 #include <sys/socket.h>
-        ],
-        [struct sockaddr_storage s; s.__ss_family = 1;],
-        [
-                AC_DEFINE(HAVE___SS_FAMILY_IN_SS)
-                AC_MSG_RESULT(yes)
-        ],
-        [AC_MSG_RESULT(no)]
-)
+                ],
+                [ struct sockaddr_storage s; s.__ss_family = 1; ],
+                [ ac_cv_have___ss_family_in_struct_ss="yes" ],
+                [ ac_cv_have___ss_family_in_struct_ss="no" ]
+        )
+])
+if test "x$ac_cv_have___ss_family_in_struct_ss" = "xyes" ; then
+        AC_DEFINE(HAVE___SS_FAMILY_IN_SS)
+fi
+
+
+AC_CACHE_CHECK([if libc defines __progname], ac_cv_libc_defines___progname, [
+        AC_TRY_LINK([], 
+                [ extern char *__progname; printf("%s", __progname); ], 
+                [ ac_cv_libc_defines___progname="yes" ],
+                [ ac_cv_libc_defines___progname="no" ]
+        )
+])
+if test "x$ac_cv_libc_defines___progname" = "xyes" ; then
+        AC_DEFINE(HAVE___PROGNAME)
+fi
 
-AC_MSG_CHECKING([whether libc defines __progname])
-AC_TRY_LINK([], 
-        [extern char *__progname; printf("%s", __progname);], 
-        [
-                AC_DEFINE(HAVE___PROGNAME)
-                AC_MSG_RESULT(yes)
-        ], 
-        [
-                AC_MSG_RESULT(no)
-        ]
-)
 
 # Looking for programs, paths and files
 AC_ARG_WITH(rsh,
@@ -642,21 +637,21 @@ INSTALL_SSH_PRNG_CMDS=""
 rm -f prng_commands
 if test -z "$RANDOM_POOL" -a -z "$EGD_SOCKET" ; then
         # Use these commands to collect entropy
-        AC_PATH_ENTROPY_PROG(PROG_LS, ls)
-        AC_PATH_ENTROPY_PROG(PROG_NETSTAT, netstat)
-        AC_PATH_ENTROPY_PROG(PROG_ARP, arp)
-        AC_PATH_ENTROPY_PROG(PROG_IFCONFIG, ifconfig)
-        AC_PATH_ENTROPY_PROG(PROG_PS, ps)
-        AC_PATH_ENTROPY_PROG(PROG_W, w)
-        AC_PATH_ENTROPY_PROG(PROG_WHO, who)
-        AC_PATH_ENTROPY_PROG(PROG_LAST, last)
-        AC_PATH_ENTROPY_PROG(PROG_LASTLOG, lastlog)
-        AC_PATH_ENTROPY_PROG(PROG_DF, df)
-        AC_PATH_ENTROPY_PROG(PROG_VMSTAT, vmstat)
-        AC_PATH_ENTROPY_PROG(PROG_UPTIME, uptime)
-        AC_PATH_ENTROPY_PROG(PROG_IPCS, ipcs)
-        AC_PATH_ENTROPY_PROG(PROG_TAIL, tail)
-        AC_PATH_ENTROPY_PROG(PROG_LS, ls)
+        OSSH_PATH_ENTROPY_PROG(PROG_LS, ls)
+        OSSH_PATH_ENTROPY_PROG(PROG_NETSTAT, netstat)
+        OSSH_PATH_ENTROPY_PROG(PROG_ARP, arp)
+        OSSH_PATH_ENTROPY_PROG(PROG_IFCONFIG, ifconfig)
+        OSSH_PATH_ENTROPY_PROG(PROG_PS, ps)
+        OSSH_PATH_ENTROPY_PROG(PROG_W, w)
+        OSSH_PATH_ENTROPY_PROG(PROG_WHO, who)
+        OSSH_PATH_ENTROPY_PROG(PROG_LAST, last)
+        OSSH_PATH_ENTROPY_PROG(PROG_LASTLOG, lastlog)
+        OSSH_PATH_ENTROPY_PROG(PROG_DF, df)
+        OSSH_PATH_ENTROPY_PROG(PROG_VMSTAT, vmstat)
+        OSSH_PATH_ENTROPY_PROG(PROG_UPTIME, uptime)
+        OSSH_PATH_ENTROPY_PROG(PROG_IPCS, ipcs)
+        OSSH_PATH_ENTROPY_PROG(PROG_TAIL, tail)
+        OSSH_PATH_ENTROPY_PROG(PROG_LS, ls)
 
         INSTALL_SSH_PRNG_CMDS="yes"
 fi
@@ -844,7 +839,7 @@ AC_ARG_WITH(ipv4-default,
         ]
 )
 
-AC_MSG_CHECKING([to convert IPv4 in IPv6-mapped addresses])
+AC_MSG_CHECKING([if we need to convert IPv4 in IPv6-mapped addresses])
 AC_ARG_WITH(4in6,
         [  --with-4in6             Check for and convert IPv4 in IPv6 mapped addresses],
         [