* configure.in: Add option and checks for dynamic linking.

diff --git a/libguile/configure b/libguile/configure
index b55c564..2a58555 100755 (executable)
--- a/libguile/configure
+++ b/libguile/configure
@@ -13,6 +13,8 @@ ac_default_prefix=/usr/local
 # Any additions from configure.in:
 ac_help="$ac_help
   --disable-debug         Don't include debugging support"
+ac_help="$ac_help
+  --enable-dynamic-linking  Include support for dynamic linking"
 ac_help="$ac_help
   --with-threads          thread interface"
 
@@ -555,7 +557,7 @@ ac_configure=$ac_aux_dir/configure # This should be Cygnus configure.
 # SVR4 /usr/ucb/install, which tries to use the nonexistent group "staff"
 # ./install, which can be erroneously created by make from ./install.sh.
 echo $ac_n "checking for a BSD compatible install""... $ac_c" 1>&6
-echo "configure:559: checking for a BSD compatible install" >&5
+echo "configure:561: checking for a BSD compatible install" >&5
 if test -z "$INSTALL"; then
 if eval "test \"`echo '$''{'ac_cv_path_install'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
@@ -623,7 +625,7 @@ cat >> confdefs.h <<EOF
 EOF
 
 echo $ac_n "checking whether build environment is sane""... $ac_c" 1>&6
-echo "configure:627: checking whether build environment is sane" >&5
+echo "configure:629: checking whether build environment is sane" >&5
 echo timestamp > conftestfile
 # Do this in a subshell so we don't clobber the current shell's
 # arguments.  FIXME: maybe try `-L' hack like GETLOADAVG test?
@@ -657,7 +659,7 @@ test "$program_suffix" != NONE &&
 test "$program_transform_name" = "" && program_transform_name="s,x,x,"
 
 echo $ac_n "checking whether ${MAKE-make} sets \${MAKE}""... $ac_c" 1>&6
-echo "configure:661: checking whether ${MAKE-make} sets \${MAKE}" >&5
+echo "configure:663: checking whether ${MAKE-make} sets \${MAKE}" >&5
 set dummy ${MAKE-make}; ac_make=`echo "$2" | sed 'y%./+-%__p_%'`
 if eval "test \"`echo '$''{'ac_cv_prog_make_${ac_make}_set'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
@@ -729,12 +731,25 @@ EOF
   LIBOBJS="backtrace.o stacks.o debug.o srcprop.o $LIBOBJS"
 fi
 
+# Check whether --enable-dynamic-linking or --disable-dynamic-linking was given.
+if test "${enable_dynamic_linking+set}" = set; then
+  enableval="$enable_dynamic_linking"
+  :
+fi
+
+if test "$enableval" != n && test "$enableval" != no && test "$enableval" != ""; then
+  cat >> confdefs.h <<\EOF
+#define DYNAMIC_LINKING 1
+EOF
+
+fi
+
 #--------------------------------------------------------------------
 
 # Extract the first word of "gcc", so it can be a program name with args.
 set dummy gcc; ac_word=$2
 echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
-echo "configure:738: checking for $ac_word" >&5
+echo "configure:753: checking for $ac_word" >&5
 if eval "test \"`echo '$''{'ac_cv_prog_CC'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -763,7 +778,7 @@ if test -z "$CC"; then
   # Extract the first word of "cc", so it can be a program name with args.
 set dummy cc; ac_word=$2
 echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
-echo "configure:767: checking for $ac_word" >&5
+echo "configure:782: checking for $ac_word" >&5
 if eval "test \"`echo '$''{'ac_cv_prog_CC'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -811,7 +826,7 @@ fi
 fi
 
 echo $ac_n "checking whether the C compiler ($CC $CFLAGS $LDFLAGS) works""... $ac_c" 1>&6
-echo "configure:815: checking whether the C compiler ($CC $CFLAGS $LDFLAGS) works" >&5
+echo "configure:830: checking whether the C compiler ($CC $CFLAGS $LDFLAGS) works" >&5
 
 ac_ext=c
 # CFLAGS is not in ac_cpp because -g, -O, etc. are not valid cpp options.
@@ -821,11 +836,11 @@ ac_link='${CC-cc} -o conftest $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS
 cross_compiling=$ac_cv_prog_cc_cross
 
 cat > conftest.$ac_ext <<EOF
-#line 825 "configure"
+#line 840 "configure"
 #include "confdefs.h"
 main(){return(0);}
 EOF
-if { (eval echo configure:829: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest; then
+if { (eval echo configure:844: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest; then
   ac_cv_prog_cc_works=yes
   # If we can't run a trivial program, we are probably using a cross compiler.
   if (./conftest; exit) 2>/dev/null; then
@@ -845,12 +860,12 @@ if test $ac_cv_prog_cc_works = no; then
   { echo "configure: error: installation or configuration problem: C compiler cannot create executables." 1>&2; exit 1; }
 fi
 echo $ac_n "checking whether the C compiler ($CC $CFLAGS $LDFLAGS) is a cross-compiler""... $ac_c" 1>&6
-echo "configure:849: checking whether the C compiler ($CC $CFLAGS $LDFLAGS) is a cross-compiler" >&5
+echo "configure:864: checking whether the C compiler ($CC $CFLAGS $LDFLAGS) is a cross-compiler" >&5
 echo "$ac_t""$ac_cv_prog_cc_cross" 1>&6
 cross_compiling=$ac_cv_prog_cc_cross
 
 echo $ac_n "checking whether we are using GNU C""... $ac_c" 1>&6
-echo "configure:854: checking whether we are using GNU C" >&5
+echo "configure:869: checking whether we are using GNU C" >&5
 if eval "test \"`echo '$''{'ac_cv_prog_gcc'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -859,7 +874,7 @@ else
   yes;
 #endif
 EOF
-if { ac_try='${CC-cc} -E conftest.c'; { (eval echo configure:863: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }; } | egrep yes >/dev/null 2>&1; then
+if { ac_try='${CC-cc} -E conftest.c'; { (eval echo configure:878: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }; } | egrep yes >/dev/null 2>&1; then
   ac_cv_prog_gcc=yes
 else
   ac_cv_prog_gcc=no
@@ -874,7 +889,7 @@ if test $ac_cv_prog_gcc = yes; then
   ac_save_CFLAGS="$CFLAGS"
   CFLAGS=
   echo $ac_n "checking whether ${CC-cc} accepts -g""... $ac_c" 1>&6
-echo "configure:878: checking whether ${CC-cc} accepts -g" >&5
+echo "configure:893: checking whether ${CC-cc} accepts -g" >&5
 if eval "test \"`echo '$''{'ac_cv_prog_cc_g'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -902,7 +917,7 @@ else
 fi
 
 echo $ac_n "checking how to run the C preprocessor""... $ac_c" 1>&6
-echo "configure:906: checking how to run the C preprocessor" >&5
+echo "configure:921: checking how to run the C preprocessor" >&5
 # On Suns, sometimes $CPP names a directory.
 if test -n "$CPP" && test -d "$CPP"; then
   CPP=
@@ -917,13 +932,13 @@ else
   # On the NeXT, cc -E runs the code through the compiler's parser,
   # not just through cpp.
   cat > conftest.$ac_ext <<EOF
-#line 921 "configure"
+#line 936 "configure"
 #include "confdefs.h"
 #include <assert.h>
 Syntax Error
 EOF
 ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
-{ (eval echo configure:927: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+{ (eval echo configure:942: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
 ac_err=`grep -v '^ *+' conftest.out`
 if test -z "$ac_err"; then
   :
@@ -934,13 +949,13 @@ else
   rm -rf conftest*
   CPP="${CC-cc} -E -traditional-cpp"
   cat > conftest.$ac_ext <<EOF
-#line 938 "configure"
+#line 953 "configure"
 #include "confdefs.h"
 #include <assert.h>
 Syntax Error
 EOF
 ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
-{ (eval echo configure:944: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+{ (eval echo configure:959: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
 ac_err=`grep -v '^ *+' conftest.out`
 if test -z "$ac_err"; then
   :
@@ -965,7 +980,7 @@ echo "$ac_t""$CPP" 1>&6
 # Extract the first word of "ranlib", so it can be a program name with args.
 set dummy ranlib; ac_word=$2
 echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
-echo "configure:969: checking for $ac_word" >&5
+echo "configure:984: checking for $ac_word" >&5
 if eval "test \"`echo '$''{'ac_cv_prog_RANLIB'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -993,9 +1008,9 @@ fi
 
 
 echo $ac_n "checking for AIX""... $ac_c" 1>&6
-echo "configure:997: checking for AIX" >&5
+echo "configure:1012: checking for AIX" >&5
 cat > conftest.$ac_ext <<EOF
-#line 999 "configure"
+#line 1014 "configure"
 #include "confdefs.h"
 #ifdef _AIX
   yes
@@ -1017,7 +1032,7 @@ rm -f conftest*
 
 
 echo $ac_n "checking for POSIXized ISC""... $ac_c" 1>&6
-echo "configure:1021: checking for POSIXized ISC" >&5
+echo "configure:1036: checking for POSIXized ISC" >&5
 if test -d /etc/conf/kconfig.d &&
   grep _POSIX_VERSION /usr/include/sys/unistd.h >/dev/null 2>&1
 then
@@ -1039,17 +1054,17 @@ fi
 
 ac_safe=`echo "minix/config.h" | sed 'y%./+-%__p_%'`
 echo $ac_n "checking for minix/config.h""... $ac_c" 1>&6
-echo "configure:1043: checking for minix/config.h" >&5
+echo "configure:1058: checking for minix/config.h" >&5
 if eval "test \"`echo '$''{'ac_cv_header_$ac_safe'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 1048 "configure"
+#line 1063 "configure"
 #include "confdefs.h"
 #include <minix/config.h>
 EOF
 ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
-{ (eval echo configure:1053: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+{ (eval echo configure:1068: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
 ac_err=`grep -v '^ *+' conftest.out`
 if test -z "$ac_err"; then
   rm -rf conftest*
@@ -1089,7 +1104,7 @@ fi
 
 
 echo $ac_n "checking "threads package type"""... $ac_c" 1>&6
-echo "configure:1093: checking "threads package type"" >&5
+echo "configure:1108: checking "threads package type"" >&5
 if eval "test \"`echo '$''{'cy_cv_threads_package'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -1148,7 +1163,7 @@ if test "$use_threads" != no; then
     LDFLAGS="-L$use_threads/lib"
     LIBS="-lgthreads -lmalloc"
     cat > conftest.$ac_ext <<EOF
-#line 1152 "configure"
+#line 1167 "configure"
 #include "confdefs.h"
 #include <pthread.h>
 int main() {
@@ -1157,7 +1172,7 @@ pthread_equal(NULL,NULL);
 
 ; return 0; }
 EOF
-if { (eval echo configure:1161: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest; then
+if { (eval echo configure:1176: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest; then
   rm -rf conftest*
   threads_package=FSU
 else
@@ -1169,7 +1184,7 @@ rm -f conftest*
   if test "$threads_package" = unknown; then
     LIBS="-lpthread"
     cat > conftest.$ac_ext <<EOF
-#line 1173 "configure"
+#line 1188 "configure"
 #include "confdefs.h"
 #include <pthread.h>
 int main() {
@@ -1178,7 +1193,7 @@ pthread_equal(NULL,NULL);
 
 ; return 0; }
 EOF
-if { (eval echo configure:1182: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest; then
+if { (eval echo configure:1197: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest; then
   rm -rf conftest*
   threads_package=MIT
 else
@@ -1190,7 +1205,7 @@ rm -f conftest*
   if test "$threads_package" = unknown; then
     LIBS="-lpthreads"
     cat > conftest.$ac_ext <<EOF
-#line 1194 "configure"
+#line 1209 "configure"
 #include "confdefs.h"
 #include <pthread.h>
 int main() {
@@ -1199,7 +1214,7 @@ pthread_equal(NULL,NULL);
 
 ; return 0; }
 EOF
-if { (eval echo configure:1203: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest; then
+if { (eval echo configure:1218: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest; then
   rm -rf conftest*
   threads_package=PCthreads
 else
@@ -1231,12 +1246,12 @@ echo "$ac_t""$cy_cv_threads_package" 1>&6
 
 
 echo $ac_n "checking for working const""... $ac_c" 1>&6
-echo "configure:1235: checking for working const" >&5
+echo "configure:1250: checking for working const" >&5
 if eval "test \"`echo '$''{'ac_cv_c_const'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 1240 "configure"
+#line 1255 "configure"
 #include "confdefs.h"
 
 int main() {
@@ -1285,7 +1300,7 @@ ccp = (char const *const *) p;
 
 ; return 0; }
 EOF
-if { (eval echo configure:1289: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:1304: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   ac_cv_c_const=yes
 else
@@ -1307,12 +1322,12 @@ fi
 
 
 echo $ac_n "checking for ANSI C header files""... $ac_c" 1>&6
-echo "configure:1311: checking for ANSI C header files" >&5
+echo "configure:1326: checking for ANSI C header files" >&5
 if eval "test \"`echo '$''{'ac_cv_header_stdc'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 1316 "configure"
+#line 1331 "configure"
 #include "confdefs.h"
 #include <stdlib.h>
 #include <stdarg.h>
@@ -1320,7 +1335,7 @@ else
 #include <float.h>
 EOF
 ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
-{ (eval echo configure:1324: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+{ (eval echo configure:1339: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
 ac_err=`grep -v '^ *+' conftest.out`
 if test -z "$ac_err"; then
   rm -rf conftest*
@@ -1337,7 +1352,7 @@ rm -f conftest*
 if test $ac_cv_header_stdc = yes; then
   # SunOS 4.x string.h does not declare mem*, contrary to ANSI.
 cat > conftest.$ac_ext <<EOF
-#line 1341 "configure"
+#line 1356 "configure"
 #include "confdefs.h"
 #include <string.h>
 EOF
@@ -1355,7 +1370,7 @@ fi
 if test $ac_cv_header_stdc = yes; then
   # ISC 2.0.2 stdlib.h does not declare free, contrary to ANSI.
 cat > conftest.$ac_ext <<EOF
-#line 1359 "configure"
+#line 1374 "configure"
 #include "confdefs.h"
 #include <stdlib.h>
 EOF
@@ -1376,7 +1391,7 @@ if test "$cross_compiling" = yes; then
   :
 else
   cat > conftest.$ac_ext <<EOF
-#line 1380 "configure"
+#line 1395 "configure"
 #include "confdefs.h"
 #include <ctype.h>
 #define ISLOWER(c) ('a' <= (c) && (c) <= 'z')
@@ -1387,7 +1402,7 @@ if (XOR (islower (i), ISLOWER (i)) || toupper (i) != TOUPPER (i)) exit(2);
 exit (0); }
 
 EOF
-if { (eval echo configure:1391: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest && (./conftest; exit) 2>/dev/null
+if { (eval echo configure:1406: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest && (./conftest; exit) 2>/dev/null
 then
   :
 else
@@ -1415,12 +1430,12 @@ for ac_hdr in dirent.h sys/ndir.h sys/dir.h ndir.h
 do
 ac_safe=`echo "$ac_hdr" | sed 'y%./+-%__p_%'`
 echo $ac_n "checking for $ac_hdr that defines DIR""... $ac_c" 1>&6
-echo "configure:1419: checking for $ac_hdr that defines DIR" >&5
+echo "configure:1434: checking for $ac_hdr that defines DIR" >&5
 if eval "test \"`echo '$''{'ac_cv_header_dirent_$ac_safe'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 1424 "configure"
+#line 1439 "configure"
 #include "confdefs.h"
 #include <sys/types.h>
 #include <$ac_hdr>
@@ -1428,7 +1443,7 @@ int main() {
 DIR *dirp = 0;
 ; return 0; }
 EOF
-if { (eval echo configure:1432: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:1447: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   eval "ac_cv_header_dirent_$ac_safe=yes"
 else
@@ -1453,7 +1468,7 @@ done
 # Two versions of opendir et al. are in -ldir and -lx on SCO Xenix.
 if test $ac_header_dirent = dirent.h; then
 echo $ac_n "checking for opendir in -ldir""... $ac_c" 1>&6
-echo "configure:1457: checking for opendir in -ldir" >&5
+echo "configure:1472: checking for opendir in -ldir" >&5
 ac_lib_var=`echo dir'_'opendir | sed 'y%./+-%__p_%'`
 if eval "test \"`echo '$''{'ac_cv_lib_$ac_lib_var'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
@@ -1461,7 +1476,7 @@ else
   ac_save_LIBS="$LIBS"
 LIBS="-ldir  $LIBS"
 cat > conftest.$ac_ext <<EOF
-#line 1465 "configure"
+#line 1480 "configure"
 #include "confdefs.h"
 /* Override any gcc2 internal prototype to avoid an error.  */
 /* We use char because int might match the return type of a gcc2
@@ -1472,7 +1487,7 @@ int main() {
 opendir()
 ; return 0; }
 EOF
-if { (eval echo configure:1476: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest; then
+if { (eval echo configure:1491: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest; then
   rm -rf conftest*
   eval "ac_cv_lib_$ac_lib_var=yes"
 else
@@ -1494,7 +1509,7 @@ fi
 
 else
 echo $ac_n "checking for opendir in -lx""... $ac_c" 1>&6
-echo "configure:1498: checking for opendir in -lx" >&5
+echo "configure:1513: checking for opendir in -lx" >&5
 ac_lib_var=`echo x'_'opendir | sed 'y%./+-%__p_%'`
 if eval "test \"`echo '$''{'ac_cv_lib_$ac_lib_var'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
@@ -1502,7 +1517,7 @@ else
   ac_save_LIBS="$LIBS"
 LIBS="-lx  $LIBS"
 cat > conftest.$ac_ext <<EOF
-#line 1506 "configure"
+#line 1521 "configure"
 #include "confdefs.h"
 /* Override any gcc2 internal prototype to avoid an error.  */
 /* We use char because int might match the return type of a gcc2
@@ -1513,7 +1528,7 @@ int main() {
 opendir()
 ; return 0; }
 EOF
-if { (eval echo configure:1517: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest; then
+if { (eval echo configure:1532: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest; then
   rm -rf conftest*
   eval "ac_cv_lib_$ac_lib_var=yes"
 else
@@ -1536,12 +1551,12 @@ fi
 fi
 
 echo $ac_n "checking whether time.h and sys/time.h may both be included""... $ac_c" 1>&6
-echo "configure:1540: checking whether time.h and sys/time.h may both be included" >&5
+echo "configure:1555: checking whether time.h and sys/time.h may both be included" >&5
 if eval "test \"`echo '$''{'ac_cv_header_time'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 1545 "configure"
+#line 1560 "configure"
 #include "confdefs.h"
 #include <sys/types.h>
 #include <sys/time.h>
@@ -1550,7 +1565,7 @@ int main() {
 struct tm *tp;
 ; return 0; }
 EOF
-if { (eval echo configure:1554: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:1569: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   ac_cv_header_time=yes
 else
@@ -1571,12 +1586,12 @@ EOF
 fi
 
 echo $ac_n "checking for sys/wait.h that is POSIX.1 compatible""... $ac_c" 1>&6
-echo "configure:1575: checking for sys/wait.h that is POSIX.1 compatible" >&5
+echo "configure:1590: checking for sys/wait.h that is POSIX.1 compatible" >&5
 if eval "test \"`echo '$''{'ac_cv_header_sys_wait_h'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 1580 "configure"
+#line 1595 "configure"
 #include "confdefs.h"
 #include <sys/types.h>
 #include <sys/wait.h>
@@ -1592,7 +1607,7 @@ wait (&s);
 s = WIFEXITED (s) ? WEXITSTATUS (s) : 1;
 ; return 0; }
 EOF
-if { (eval echo configure:1596: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:1611: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   ac_cv_header_sys_wait_h=yes
 else
@@ -1616,17 +1631,17 @@ for ac_hdr in libc.h limits.h malloc.h memory.h string.h sys/ioctl.h sys/select.
 do
 ac_safe=`echo "$ac_hdr" | sed 'y%./+-%__p_%'`
 echo $ac_n "checking for $ac_hdr""... $ac_c" 1>&6
-echo "configure:1620: checking for $ac_hdr" >&5
+echo "configure:1635: checking for $ac_hdr" >&5
 if eval "test \"`echo '$''{'ac_cv_header_$ac_safe'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 1625 "configure"
+#line 1640 "configure"
 #include "confdefs.h"
 #include <$ac_hdr>
 EOF
 ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
-{ (eval echo configure:1630: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+{ (eval echo configure:1645: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
 ac_err=`grep -v '^ *+' conftest.out`
 if test -z "$ac_err"; then
   rm -rf conftest*
@@ -1657,17 +1672,17 @@ done
 do
 ac_safe=`echo "$ac_hdr" | sed 'y%./+-%__p_%'`
 echo $ac_n "checking for $ac_hdr""... $ac_c" 1>&6
-echo "configure:1661: checking for $ac_hdr" >&5
+echo "configure:1676: checking for $ac_hdr" >&5
 if eval "test \"`echo '$''{'ac_cv_header_$ac_safe'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 1666 "configure"
+#line 1681 "configure"
 #include "confdefs.h"
 #include <$ac_hdr>
 EOF
 ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
-{ (eval echo configure:1671: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+{ (eval echo configure:1686: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
 ac_err=`grep -v '^ *+' conftest.out`
 if test -z "$ac_err"; then
   rm -rf conftest*
@@ -1694,7 +1709,7 @@ fi
 done
 
     echo $ac_n "checking "whether libc.h and unistd.h can be included together"""... $ac_c" 1>&6
-echo "configure:1698: checking "whether libc.h and unistd.h can be included together"" >&5
+echo "configure:1713: checking "whether libc.h and unistd.h can be included together"" >&5
 if eval "test \"`echo '$''{'guile_cv_header_libc_with_unistd'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -1705,7 +1720,7 @@ else
           guile_cv_header_libc_with_unistd="yes"
         else
           cat > conftest.$ac_ext <<EOF
-#line 1709 "configure"
+#line 1724 "configure"
 #include "confdefs.h"
 
 #             include <libc.h>
@@ -1715,7 +1730,7 @@ int main() {
 
 ; return 0; }
 EOF
-if { (eval echo configure:1719: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:1734: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   guile_cv_header_libc_with_unistd=yes
 else
@@ -1742,12 +1757,12 @@ EOF
 
 
 echo $ac_n "checking for uid_t in sys/types.h""... $ac_c" 1>&6
-echo "configure:1746: checking for uid_t in sys/types.h" >&5
+echo "configure:1761: checking for uid_t in sys/types.h" >&5
 if eval "test \"`echo '$''{'ac_cv_type_uid_t'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 1751 "configure"
+#line 1766 "configure"
 #include "confdefs.h"
 #include <sys/types.h>
 EOF
@@ -1776,7 +1791,7 @@ EOF
 fi
 
 echo $ac_n "checking type of array argument to getgroups""... $ac_c" 1>&6
-echo "configure:1780: checking type of array argument to getgroups" >&5
+echo "configure:1795: checking type of array argument to getgroups" >&5
 if eval "test \"`echo '$''{'ac_cv_type_getgroups'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -1784,7 +1799,7 @@ else
   ac_cv_type_getgroups=cross
 else
   cat > conftest.$ac_ext <<EOF
-#line 1788 "configure"
+#line 1803 "configure"
 #include "confdefs.h"
 
 /* Thanks to Mike Rendell for this test.  */
@@ -1809,7 +1824,7 @@ main()
 }
 
 EOF
-if { (eval echo configure:1813: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest && (./conftest; exit) 2>/dev/null
+if { (eval echo configure:1828: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest && (./conftest; exit) 2>/dev/null
 then
     ac_cv_type_getgroups=gid_t
 else
@@ -1823,7 +1838,7 @@ fi
 
 if test $ac_cv_type_getgroups = cross; then
         cat > conftest.$ac_ext <<EOF
-#line 1827 "configure"
+#line 1842 "configure"
 #include "confdefs.h"
 #include <unistd.h>
 EOF
@@ -1847,12 +1862,12 @@ EOF
 
 
 echo $ac_n "checking return type of signal handlers""... $ac_c" 1>&6
-echo "configure:1851: checking return type of signal handlers" >&5
+echo "configure:1866: checking return type of signal handlers" >&5
 if eval "test \"`echo '$''{'ac_cv_type_signal'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 1856 "configure"
+#line 1871 "configure"
 #include "confdefs.h"
 #include <sys/types.h>
 #include <signal.h>
@@ -1869,7 +1884,7 @@ int main() {
 int i;
 ; return 0; }
 EOF
-if { (eval echo configure:1873: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:1888: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   ac_cv_type_signal=void
 else
@@ -1888,12 +1903,12 @@ EOF
 
 
 echo $ac_n "checking for mode_t""... $ac_c" 1>&6
-echo "configure:1892: checking for mode_t" >&5
+echo "configure:1907: checking for mode_t" >&5
 if eval "test \"`echo '$''{'ac_cv_type_mode_t'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 1897 "configure"
+#line 1912 "configure"
 #include "confdefs.h"
 #include <sys/types.h>
 #if STDC_HEADERS
@@ -1924,12 +1939,12 @@ fi
 for ac_func in ctermid ftime getcwd geteuid lstat mkdir mknod nice putenv readlink rename rmdir select setegid seteuid setlocale setpgid setsid strftime strptime symlink sync tcgetpgrp tcsetpgrp times uname waitpid
 do
 echo $ac_n "checking for $ac_func""... $ac_c" 1>&6
-echo "configure:1928: checking for $ac_func" >&5
+echo "configure:1943: checking for $ac_func" >&5
 if eval "test \"`echo '$''{'ac_cv_func_$ac_func'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 1933 "configure"
+#line 1948 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char $ac_func(); below.  */
@@ -1952,7 +1967,7 @@ $ac_func();
 
 ; return 0; }
 EOF
-if { (eval echo configure:1956: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest; then
+if { (eval echo configure:1971: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest; then
   rm -rf conftest*
   eval "ac_cv_func_$ac_func=yes"
 else
@@ -1980,12 +1995,12 @@ done
 for ac_func in inet_aton strerror
 do
 echo $ac_n "checking for $ac_func""... $ac_c" 1>&6
-echo "configure:1984: checking for $ac_func" >&5
+echo "configure:1999: checking for $ac_func" >&5
 if eval "test \"`echo '$''{'ac_cv_func_$ac_func'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 1989 "configure"
+#line 2004 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char $ac_func(); below.  */
@@ -2008,7 +2023,7 @@ $ac_func();
 
 ; return 0; }
 EOF
-if { (eval echo configure:2012: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest; then
+if { (eval echo configure:2027: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest; then
   rm -rf conftest*
   eval "ac_cv_func_$ac_func=yes"
 else
@@ -2036,12 +2051,12 @@ done
 
 
 echo $ac_n "checking for st_rdev in struct stat""... $ac_c" 1>&6
-echo "configure:2040: checking for st_rdev in struct stat" >&5
+echo "configure:2055: checking for st_rdev in struct stat" >&5
 if eval "test \"`echo '$''{'ac_cv_struct_st_rdev'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 2045 "configure"
+#line 2060 "configure"
 #include "confdefs.h"
 #include <sys/types.h>
 #include <sys/stat.h>
@@ -2049,7 +2064,7 @@ int main() {
 struct stat s; s.st_rdev;
 ; return 0; }
 EOF
-if { (eval echo configure:2053: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:2068: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   ac_cv_struct_st_rdev=yes
 else
@@ -2070,12 +2085,12 @@ EOF
 fi
 
 echo $ac_n "checking for st_blksize in struct stat""... $ac_c" 1>&6
-echo "configure:2074: checking for st_blksize in struct stat" >&5
+echo "configure:2089: checking for st_blksize in struct stat" >&5
 if eval "test \"`echo '$''{'ac_cv_struct_st_blksize'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 2079 "configure"
+#line 2094 "configure"
 #include "confdefs.h"
 #include <sys/types.h>
 #include <sys/stat.h>
@@ -2083,7 +2098,7 @@ int main() {
 struct stat s; s.st_blksize;
 ; return 0; }
 EOF
-if { (eval echo configure:2087: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:2102: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   ac_cv_struct_st_blksize=yes
 else
@@ -2104,12 +2119,12 @@ EOF
 fi
 
 echo $ac_n "checking for st_blocks in struct stat""... $ac_c" 1>&6
-echo "configure:2108: checking for st_blocks in struct stat" >&5
+echo "configure:2123: checking for st_blocks in struct stat" >&5
 if eval "test \"`echo '$''{'ac_cv_struct_st_blocks'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 2113 "configure"
+#line 2128 "configure"
 #include "confdefs.h"
 #include <sys/types.h>
 #include <sys/stat.h>
@@ -2117,7 +2132,7 @@ int main() {
 struct stat s; s.st_blocks;
 ; return 0; }
 EOF
-if { (eval echo configure:2121: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:2136: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   ac_cv_struct_st_blocks=yes
 else
@@ -2141,12 +2156,12 @@ fi
 
 
   echo $ac_n "checking whether we need POSIX to get struct utimbuf""... $ac_c" 1>&6
-echo "configure:2145: checking whether we need POSIX to get struct utimbuf" >&5
+echo "configure:2160: checking whether we need POSIX to get struct utimbuf" >&5
 if eval "test \"`echo '$''{'guile_cv_struct_utimbuf_needs_posix'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 2150 "configure"
+#line 2165 "configure"
 #include "confdefs.h"
 
 #ifdef __EMX__
@@ -2158,7 +2173,7 @@ struct utime blah;
 
 EOF
 ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
-{ (eval echo configure:2162: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+{ (eval echo configure:2177: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
 ac_err=`grep -v '^ *+' conftest.out`
 if test -z "$ac_err"; then
   rm -rf conftest*
@@ -2181,6 +2196,157 @@ EOF
 
   fi
 
+# Checks for dynamic linking
+echo $ac_n "checking for dlopen in -ldl""... $ac_c" 1>&6
+echo "configure:2202: checking for dlopen in -ldl" >&5
+ac_lib_var=`echo dl'_'dlopen | sed 'y%./+-%__p_%'`
+if eval "test \"`echo '$''{'ac_cv_lib_$ac_lib_var'+set}'`\" = set"; then
+  echo $ac_n "(cached) $ac_c" 1>&6
+else
+  ac_save_LIBS="$LIBS"
+LIBS="-ldl  $LIBS"
+cat > conftest.$ac_ext <<EOF
+#line 2210 "configure"
+#include "confdefs.h"
+/* Override any gcc2 internal prototype to avoid an error.  */
+/* We use char because int might match the return type of a gcc2
+    builtin and then its argument prototype would still apply.  */
+char dlopen();
+
+int main() {
+dlopen()
+; return 0; }
+EOF
+if { (eval echo configure:2221: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest; then
+  rm -rf conftest*
+  eval "ac_cv_lib_$ac_lib_var=yes"
+else
+  echo "configure: failed program was:" >&5
+  cat conftest.$ac_ext >&5
+  rm -rf conftest*
+  eval "ac_cv_lib_$ac_lib_var=no"
+fi
+rm -f conftest*
+LIBS="$ac_save_LIBS"
+
+fi
+if eval "test \"`echo '$ac_cv_lib_'$ac_lib_var`\" = yes"; then
+  echo "$ac_t""yes" 1>&6
+    ac_tr_lib=HAVE_LIB`echo dl | sed -e 's/[^a-zA-Z0-9_]/_/g' \
+    -e 'y/abcdefghijklmnopqrstuvwxyz/ABCDEFGHIJKLMNOPQRSTUVWXYZ/'`
+  cat >> confdefs.h <<EOF
+#define $ac_tr_lib 1
+EOF
+
+  LIBS="-ldl $LIBS"
+
+else
+  echo "$ac_t""no" 1>&6
+fi
+
+echo $ac_n "checking for dld_link in -ldld""... $ac_c" 1>&6
+echo "configure:2249: checking for dld_link in -ldld" >&5
+ac_lib_var=`echo dld'_'dld_link | sed 'y%./+-%__p_%'`
+if eval "test \"`echo '$''{'ac_cv_lib_$ac_lib_var'+set}'`\" = set"; then
+  echo $ac_n "(cached) $ac_c" 1>&6
+else
+  ac_save_LIBS="$LIBS"
+LIBS="-ldld  $LIBS"
+cat > conftest.$ac_ext <<EOF
+#line 2257 "configure"
+#include "confdefs.h"
+/* Override any gcc2 internal prototype to avoid an error.  */
+/* We use char because int might match the return type of a gcc2
+    builtin and then its argument prototype would still apply.  */
+char dld_link();
+
+int main() {
+dld_link()
+; return 0; }
+EOF
+if { (eval echo configure:2268: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest; then
+  rm -rf conftest*
+  eval "ac_cv_lib_$ac_lib_var=yes"
+else
+  echo "configure: failed program was:" >&5
+  cat conftest.$ac_ext >&5
+  rm -rf conftest*
+  eval "ac_cv_lib_$ac_lib_var=no"
+fi
+rm -f conftest*
+LIBS="$ac_save_LIBS"
+
+fi
+if eval "test \"`echo '$ac_cv_lib_'$ac_lib_var`\" = yes"; then
+  echo "$ac_t""yes" 1>&6
+    ac_tr_lib=HAVE_LIB`echo dld | sed -e 's/[^a-zA-Z0-9_]/_/g' \
+    -e 'y/abcdefghijklmnopqrstuvwxyz/ABCDEFGHIJKLMNOPQRSTUVWXYZ/'`
+  cat >> confdefs.h <<EOF
+#define $ac_tr_lib 1
+EOF
+
+  LIBS="-ldld $LIBS"
+
+else
+  echo "$ac_t""no" 1>&6
+fi
+
+for ac_func in shl_load
+do
+echo $ac_n "checking for $ac_func""... $ac_c" 1>&6
+echo "configure:2298: checking for $ac_func" >&5
+if eval "test \"`echo '$''{'ac_cv_func_$ac_func'+set}'`\" = set"; then
+  echo $ac_n "(cached) $ac_c" 1>&6
+else
+  cat > conftest.$ac_ext <<EOF
+#line 2303 "configure"
+#include "confdefs.h"
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char $ac_func(); below.  */
+#include <assert.h>
+/* Override any gcc2 internal prototype to avoid an error.  */
+/* We use char because int might match the return type of a gcc2
+    builtin and then its argument prototype would still apply.  */
+char $ac_func();
+
+int main() {
+
+/* The GNU C library defines this for functions which it implements
+    to always fail with ENOSYS.  Some functions are actually named
+    something starting with __ and the normal name is an alias.  */
+#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
+choke me
+#else
+$ac_func();
+#endif
+
+; return 0; }
+EOF
+if { (eval echo configure:2326: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest; then
+  rm -rf conftest*
+  eval "ac_cv_func_$ac_func=yes"
+else
+  echo "configure: failed program was:" >&5
+  cat conftest.$ac_ext >&5
+  rm -rf conftest*
+  eval "ac_cv_func_$ac_func=no"
+fi
+rm -f conftest*
+fi
+
+if eval "test \"`echo '$ac_cv_func_'$ac_func`\" = yes"; then
+  echo "$ac_t""yes" 1>&6
+    ac_tr_func=HAVE_`echo $ac_func | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
+  cat >> confdefs.h <<EOF
+#define $ac_tr_func 1
+EOF
+ 
+else
+  echo "$ac_t""no" 1>&6
+fi
+done
+
+
 #--------------------------------------------------------------------
 #
 # Which way does the stack grow?
@@ -2191,13 +2357,13 @@ if test "$cross_compiling" = yes; then
   echo "configure: warning: Guessing that stack grows down -- see scmconfig.h.in" 1>&2
 else
   cat > conftest.$ac_ext <<EOF
-#line 2195 "configure"
+#line 2361 "configure"
 #include "confdefs.h"
 aux (l) unsigned long l;
             { int x; exit (l >= ((unsigned long)&x)); }
           main () { int q; aux((unsigned long)&q); }
 EOF
-if { (eval echo configure:2201: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest && (./conftest; exit) 2>/dev/null
+if { (eval echo configure:2367: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest && (./conftest; exit) 2>/dev/null
 then
   cat >> confdefs.h <<\EOF
 #define SCM_STACK_GROWS_UP 1
@@ -2220,11 +2386,11 @@ EOF
           echo "configure: warning: Guessing that sizeof(long) == sizeof(float) -- see scmconfig.h.in" 1>&2
 else
   cat > conftest.$ac_ext <<EOF
-#line 2224 "configure"
+#line 2390 "configure"
 #include "confdefs.h"
 main () { exit (sizeof(float) != sizeof(long)); }
 EOF
-if { (eval echo configure:2228: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest && (./conftest; exit) 2>/dev/null
+if { (eval echo configure:2394: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest && (./conftest; exit) 2>/dev/null
 then
   cat >> confdefs.h <<\EOF
 #define SCM_SINGLES 1
@@ -2239,19 +2405,19 @@ fi
 
 
 echo $ac_n "checking for struct linger""... $ac_c" 1>&6
-echo "configure:2243: checking for struct linger" >&5
+echo "configure:2409: checking for struct linger" >&5
 if eval "test \"`echo '$''{'scm_cv_struct_linger'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 2248 "configure"
+#line 2414 "configure"
 #include "confdefs.h"
 #include <sys/socket.h>
 int main() {
 struct linger lgr;  lgr.l_linger = 100
 ; return 0; }
 EOF
-if { (eval echo configure:2255: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:2421: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   scm_cv_struct_linger="yes"
 else
@@ -2281,7 +2447,7 @@ FD_SETTER=""
 
 if test "x$FD_SETTER" = x; then
   cat > conftest.$ac_ext <<EOF
-#line 2285 "configure"
+#line 2451 "configure"
 #include "confdefs.h"
 #include <stdio.h>
 
@@ -2289,7 +2455,7 @@ int main() {
 stdout->_file = 1
 ; return 0; }
 EOF
-if { (eval echo configure:2293: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:2459: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   FD_SETTER="((F)->_file = (D))"
 else
@@ -2301,7 +2467,7 @@ fi
 
 if test "x$FD_SETTER" = x; then
  cat > conftest.$ac_ext <<EOF
-#line 2305 "configure"
+#line 2471 "configure"
 #include "confdefs.h"
 #include <stdio.h>
 
@@ -2309,7 +2475,7 @@ int main() {
 stdout->_fileno
 ; return 0; }
 EOF
-if { (eval echo configure:2313: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:2479: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   FD_SETTER="((F)->_fileno = (D))"
 else
@@ -2338,19 +2504,19 @@ EOF
 #--------------------------------------------------------------------
 
 echo $ac_n "checking how to get buffer char count from FILE structure""... $ac_c" 1>&6
-echo "configure:2342: checking how to get buffer char count from FILE structure" >&5
+echo "configure:2508: checking how to get buffer char count from FILE structure" >&5
 if eval "test \"`echo '$''{'scm_cv_struct_file_count'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 2347 "configure"
+#line 2513 "configure"
 #include "confdefs.h"
 #include <stdio.h>
 int main() {
 FILE *f = stdin; f->_cnt = 0
 ; return 0; }
 EOF
-if { (eval echo configure:2354: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:2520: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   scm_cv_struct_file_count="_cnt"
 else
@@ -2358,14 +2524,14 @@ else
   cat conftest.$ac_ext >&5
   rm -rf conftest*
   cat > conftest.$ac_ext <<EOF
-#line 2362 "configure"
+#line 2528 "configure"
 #include "confdefs.h"
 #include <stdio.h>
 int main() {
 FILE *f = stdin; f->_r = 0
 ; return 0; }
 EOF
-if { (eval echo configure:2369: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:2535: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   scm_cv_struct_file_count="_r"
 else
@@ -2373,14 +2539,14 @@ else
   cat conftest.$ac_ext >&5
   rm -rf conftest*
   cat > conftest.$ac_ext <<EOF
-#line 2377 "configure"
+#line 2543 "configure"
 #include "confdefs.h"
 #include <stdio.h>
 int main() {
 FILE *f = stdin; f->readCount = 0
 ; return 0; }
 EOF
-if { (eval echo configure:2384: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:2550: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   scm_cv_struct_file_count="readCount"
 else
@@ -2407,14 +2573,14 @@ if eval "test \"`echo '$''{'scm_cv_struct_file_gptr'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 2411 "configure"
+#line 2577 "configure"
 #include "confdefs.h"
 #include <stdio.h>
 int main() {
 FILE *f = stdin; f->_gptr = f->egptr;
 ; return 0; }
 EOF
-if { (eval echo configure:2418: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:2584: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   scm_cv_struct_file_gptr=1
 else
@@ -2437,14 +2603,14 @@ if eval "test \"`echo '$''{'scm_cv_struct_file_readptr'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 2441 "configure"
+#line 2607 "configure"
 #include "confdefs.h"
 #include <stdio.h>
 int main() {
 FILE *f = stdin; f->_IO_read_ptr = f->_IO_read_end;
 ; return 0; }
 EOF
-if { (eval echo configure:2448: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:2614: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   scm_cv_struct_file_readptr=1
 else
@@ -2877,7 +3043,6 @@ fi; done
 EOF
 cat >> $CONFIG_STATUS <<EOF
 
-
 EOF
 cat >> $CONFIG_STATUS <<\EOF
 test -z "$CONFIG_HEADER" || echo timestamp > stamp-h

diff --git a/libguile/configure.in b/libguile/configure.in
index 3ce78e1..6e25e1f 100644 (file)
--- a/libguile/configure.in
+++ b/libguile/configure.in
@@ -16,6 +16,12 @@ if test "$enableval" != n && test "$enableval" != no; then
   LIBOBJS="backtrace.o stacks.o debug.o srcprop.o $LIBOBJS"
 fi
 
+AC_ARG_ENABLE(dynamic-linking,
+  [  --enable-dynamic-linking  Include support for dynamic linking])
+if test "$enableval" != n && test "$enableval" != no && test "$enableval" != ""; then
+  AC_DEFINE(DYNAMIC_LINKING)
+fi
+
 #--------------------------------------------------------------------
 
 AC_PROG_CC
@@ -50,6 +56,11 @@ AC_STRUCT_ST_BLKSIZE
 AC_STRUCT_ST_BLOCKS
 GUILE_STRUCT_UTIMBUF
 
+# Checks for dynamic linking
+AC_CHECK_LIB(dl,dlopen)
+AC_CHECK_LIB(dld,dld_link)
+AC_CHECK_FUNCS(shl_load)
+
 #--------------------------------------------------------------------
 #
 # Which way does the stack grow?