-
-# Check for command to grab the raw symbol name followed by C symbol from nm.
-echo $ac_n "checking command to parse $NM output""... $ac_c" 1>&6
-echo "configure:1472: checking command to parse $NM output" >&5
-if eval "test \"`echo '$''{'ac_cv_sys_global_symbol_pipe'+set}'`\" = set"; then
- echo $ac_n "(cached) $ac_c" 1>&6
-else
- # These are sane defaults that work on at least a few old systems.
-# {They come from Ultrix. What could be older than Ultrix?!! ;)}
-
-# Character class describing NM global symbol codes.
-ac_symcode='[BCDEGRST]'
-
-# Regexp to match symbols that can be accessed directly from C.
-ac_sympat='\([_A-Za-z][_A-Za-z0-9]*\)'
-
-# Transform the above into a raw symbol and a C symbol.
-ac_symxfrm='\1 \2\3 \3'
-
-# Transform an extracted symbol line into a proper C declaration
-ac_global_symbol_to_cdecl="sed -n -e 's/^. .* \(.*\)$/extern char \1;/p'"
-
-# Define system-specific variables.
-case "$host_os" in
-aix*)
- ac_symcode='[BCDT]'
- ;;
-cygwin* | mingw*)
- ac_symcode='[ABCDGISTW]'
- ;;
-hpux*)
- ac_global_symbol_to_cdecl="sed -n -e 's/^T .* \(.*\)$/extern char \1();/p' -e 's/^. .* \(.*\)$/extern char \1;/p'"
- ;;
-irix*)
- ac_symcode='[BCDEGRST]'
- ;;
-solaris*)
- ac_symcode='[BDT]'
- ;;
-esac
-
-# If we're using GNU nm, then use its standard symbol codes.
-if $NM -V 2>&1 | egrep '(GNU|with BFD)' > /dev/null; then
- ac_symcode='[ABCDGISTW]'
-fi
-
-# Try without a prefix undercore, then with it.
-for ac_symprfx in "" "_"; do
-
- ac_cv_sys_global_symbol_pipe="sed -n -e 's/^.* \($ac_symcode\) *\($ac_symprfx\)$ac_sympat$/$ac_symxfrm/p'"
-
- # Check to see that the pipe works correctly.
- ac_pipe_works=no
- rm -f conftest.$ac_ext
- cat > conftest.$ac_ext <<EOF
-#ifdef __cplusplus
-extern "C" {
-#endif
-char nm_test_var;
-void nm_test_func(){}
-#ifdef __cplusplus
-}
-#endif
-int main(){nm_test_var='a';nm_test_func;return 0;}
-EOF
-
- if { (eval echo configure:1535: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
- # Now try to grab the symbols.
- ac_nlist=conftest.nm
-
- if { (eval echo configure:1539: \"$NM conftest.$ac_objext \| $ac_cv_sys_global_symbol_pipe \> $ac_nlist\") 1>&5; (eval $NM conftest.$ac_objext \| $ac_cv_sys_global_symbol_pipe \> $ac_nlist) 2>&5; } && test -s "$ac_nlist"; then
-
- # Try sorting and uniquifying the output.
- if sort "$ac_nlist" | uniq > "$ac_nlist"T; then
- mv -f "$ac_nlist"T "$ac_nlist"
- else
- rm -f "$ac_nlist"T
- fi
-
- # Make sure that we snagged all the symbols we need.
- if egrep ' nm_test_var$' "$ac_nlist" >/dev/null; then
- if egrep ' nm_test_func$' "$ac_nlist" >/dev/null; then
- cat <<EOF > conftest.c
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-EOF
- # Now generate the symbol file.
- eval "$ac_global_symbol_to_cdecl"' < "$ac_nlist" >> conftest.c'
-
- cat <<EOF >> conftest.c
-#if defined (__STDC__) && __STDC__
-# define lt_ptr_t void *
-#else
-# define lt_ptr_t char *
-# define const
-#endif
-
-/* The mapping between symbol names and symbols. */
-const struct {
- const char *name;
- lt_ptr_t address;
-}
-lt_preloaded_symbols[] =
-{
-EOF
- sed 's/^. \(.*\) \(.*\)$/ {"\2", (lt_ptr_t) \&\2},/' < "$ac_nlist" >> conftest.c
- cat <<\EOF >> conftest.c
- {0, (lt_ptr_t) 0}
-};
-
-#ifdef __cplusplus
-}
-#endif
-EOF
- # Now try linking the two files.
- mv conftest.$ac_objext conftestm.$ac_objext
- ac_save_LIBS="$LIBS"
- ac_save_CFLAGS="$CFLAGS"
- LIBS="conftestm.$ac_objext"
- CFLAGS="$CFLAGS$no_builtin_flag"
- if { (eval echo configure:1591: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest; then
- ac_pipe_works=yes
- else
- echo "configure: failed program was:" >&5
- cat conftest.c >&5
- fi
- LIBS="$ac_save_LIBS"
- CFLAGS="$ac_save_CFLAGS"
- else
- echo "cannot find nm_test_func in $ac_nlist" >&5
- fi
- else
- echo "cannot find nm_test_var in $ac_nlist" >&5
- fi
- else
- echo "cannot run $ac_cv_sys_global_symbol_pipe" >&5
- fi
- else
- echo "$progname: failed program was:" >&5
- cat conftest.c >&5
- fi
- rm -rf conftest*
-
- # Do not use the global_symbol_pipe unless it works.
- if test "$ac_pipe_works" = yes; then
- if test x"$ac_symprfx" = x"_"; then
- ac_cv_sys_symbol_underscore=yes
- else
- ac_cv_sys_symbol_underscore=no
- fi
- break
- else
- ac_cv_sys_global_symbol_pipe=
- fi
-done
-
-fi
-
-
-ac_result=yes
-if test -z "$ac_cv_sys_global_symbol_pipe"; then
- ac_result=no
-fi
-echo "$ac_t""$ac_result" 1>&6
-
-echo $ac_n "checking for _ prefix in compiled symbols""... $ac_c" 1>&6
-echo "configure:1637: checking for _ prefix in compiled symbols" >&5
-if eval "test \"`echo '$''{'ac_cv_sys_symbol_underscore'+set}'`\" = set"; then
- echo $ac_n "(cached) $ac_c" 1>&6
-else
- ac_cv_sys_symbol_underscore=no
-cat > conftest.$ac_ext <<EOF
-void nm_test_func(){}
-int main(){nm_test_func;return 0;}
-EOF
-if { (eval echo configure:1646: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
- # Now try to grab the symbols.
- ac_nlist=conftest.nm
- if { (eval echo configure:1649: \"$NM conftest.$ac_objext \| $ac_cv_sys_global_symbol_pipe \> $ac_nlist\") 1>&5; (eval $NM conftest.$ac_objext \| $ac_cv_sys_global_symbol_pipe \> $ac_nlist) 2>&5; } && test -s "$ac_nlist"; then
- # See whether the symbols have a leading underscore.
- if egrep '^. _nm_test_func' "$ac_nlist" >/dev/null; then
- ac_cv_sys_symbol_underscore=yes
- else
- if egrep '^. nm_test_func ' "$ac_nlist" >/dev/null; then
- :
- else
- echo "configure: cannot find nm_test_func in $ac_nlist" >&5
- fi
- fi
- else
- echo "configure: cannot run $ac_cv_sys_global_symbol_pipe" >&5
- fi
-else
- echo "configure: failed program was:" >&5
- cat conftest.c >&5
-fi
-rm -rf conftest*
-
-fi
-
-echo "$ac_t""$ac_cv_sys_symbol_underscore" 1>&6
-USE_SYMBOL_UNDERSCORE=${ac_cv_sys_symbol_underscore=no}
-