-])])
-
-
-
-dnl @synopsis AC_LIB_READLINE
-dnl
-dnl Searches for a readline compatible library. If found, defines
-dnl `HAVE_LIBREADLINE'. If the found library has the `add_history'
-dnl function, sets also `HAVE_READLINE_HISTORY'. Also checks for the
-dnl locations of the necessary include files and sets `HAVE_READLINE_H'
-dnl or `HAVE_READLINE_READLINE_H' and `HAVE_READLINE_HISTORY_H' or
-dnl 'HAVE_HISTORY_H' if the corresponding include files exists.
-dnl
-dnl The libraries that may be readline compatible are `libedit',
-dnl `libeditline' and `libreadline'. Sometimes we need to link a termcap
-dnl library for readline to work, this macro tests these cases too by
-dnl trying to link with `libtermcap', `libcurses' or `libncurses' before
-dnl giving up.
-dnl
-dnl Here is an example of how to use the information provided by this
-dnl macro to perform the necessary includes or declarations in a C file:
-dnl
-dnl #include <config.h>
-dnl
-dnl #ifdef HAVE_LIBREADLINE
-dnl #if defined(HAVE_READLINE_READLINE_H)
-dnl #include <readline/readline.h>
-dnl #elif defined(HAVE_READLINE_H)
-dnl #include <readline.h>
-dnl #else /* !defined(HAVE_READLINE_H) */
-dnl extern char *readline ();
-dnl #endif /* !defined(HAVE_READLINE_H) */
-dnl char *cmdline = NULL;
-dnl #else /* !defined(HAVE_READLINE_READLINE_H) */
-dnl /* no readline */
-dnl #endif /* HAVE_LIBREADLINE */
-dnl
-dnl #ifdef HAVE_READLINE_HISTORY
-dnl #if defined(HAVE_READLINE_HISTORY_H)
-dnl #include <readline/history.h>
-dnl #elif defined(HAVE_HISTORY_H)
-dnl #include <history.h>
-dnl #else /* !defined(HAVE_HISTORY_H) */
-dnl extern void add_history ();
-dnl extern int write_history ();
-dnl extern int read_history ();
-dnl #endif /* defined(HAVE_READLINE_HISTORY_H) */
-dnl /* no history */
-dnl #endif /* HAVE_READLINE_HISTORY */
-dnl
-dnl
-dnl @version $Id$
-dnl @author Ville Laurikari <vl@iki.fi>
-dnl
-AC_DEFUN([AC_LIB_READLINE], [
- AC_CACHE_CHECK([for a readline compatible library],
- ac_cv_lib_readline, [
- ORIG_LIBS="$LIBS"
- for readline_lib in readline edit editline; do
- for termcap_lib in "" termcap curses ncurses; do
- if test -z "$termcap_lib"; then
- TRY_LIB="-l$readline_lib"
- else
- TRY_LIB="-l$readline_lib -l$termcap_lib"
- fi
- LIBS="$ORIG_LIBS $TRY_LIB"
- AC_TRY_LINK_FUNC(readline, ac_cv_lib_readline="$TRY_LIB")
- if test -n "$ac_cv_lib_readline"; then
- break
- fi
- done
- if test -n "$ac_cv_lib_readline"; then
+
+# _AM_DEPENDENCIES(NAME)
+# ----------------------
+# See how the compiler implements dependency checking.
+# NAME is "CC", "CXX", "GCJ", or "OBJC".
+# We try a few techniques and use that to set a single cache variable.
+#
+# We don't AC_REQUIRE the corresponding AC_PROG_CC since the latter was
+# modified to invoke _AM_DEPENDENCIES(CC); we would have a circular
+# dependency, and given that the user is not expected to run this macro,
+# just rely on AC_PROG_CC.
+AC_DEFUN([_AM_DEPENDENCIES],
+[AC_REQUIRE([AM_SET_DEPDIR])dnl
+AC_REQUIRE([AM_OUTPUT_DEPENDENCY_COMMANDS])dnl
+AC_REQUIRE([AM_MAKE_INCLUDE])dnl
+AC_REQUIRE([AM_DEP_TRACK])dnl
+
+ifelse([$1], CC, [depcc="$CC" am_compiler_list=],
+ [$1], CXX, [depcc="$CXX" am_compiler_list=],
+ [$1], OBJC, [depcc="$OBJC" am_compiler_list='gcc3 gcc'],
+ [$1], UPC, [depcc="$UPC" am_compiler_list=],
+ [$1], GCJ, [depcc="$GCJ" am_compiler_list='gcc3 gcc'],
+ [depcc="$$1" am_compiler_list=])
+
+AC_CACHE_CHECK([dependency style of $depcc],
+ [am_cv_$1_dependencies_compiler_type],
+[if test -z "$AMDEP_TRUE" && test -f "$am_depcomp"; then
+ # We make a subdir and do the tests there. Otherwise we can end up
+ # making bogus files that we don't know about and never remove. For
+ # instance it was reported that on HP-UX the gcc test will end up
+ # making a dummy file named `D' -- because `-MD' means `put the output
+ # in D'.
+ rm -rf conftest.dir
+ mkdir conftest.dir
+ # Copy depcomp to subdir because otherwise we won't find it if we're
+ # using a relative directory.
+ cp "$am_depcomp" conftest.dir
+ cd conftest.dir
+ # We will build objects and dependencies in a subdirectory because
+ # it helps to detect inapplicable dependency modes. For instance
+ # both Tru64's cc and ICC support -MD to output dependencies as a
+ # side effect of compilation, but ICC will put the dependencies in
+ # the current directory while Tru64 will put them in the object
+ # directory.
+ mkdir sub
+
+ am_cv_$1_dependencies_compiler_type=none
+ if test "$am_compiler_list" = ""; then
+ am_compiler_list=`sed -n ['s/^#*\([a-zA-Z0-9]*\))$/\1/p'] < ./depcomp`
+ fi
+ am__universal=false
+ m4_case([$1], [CC],
+ [case " $depcc " in #(
+ *\ -arch\ *\ -arch\ *) am__universal=true ;;
+ esac],
+ [CXX],
+ [case " $depcc " in #(
+ *\ -arch\ *\ -arch\ *) am__universal=true ;;
+ esac])
+
+ for depmode in $am_compiler_list; do
+ # Setup a source with many dependencies, because some compilers
+ # like to wrap large dependency lists on column 80 (with \), and
+ # we should not choose a depcomp mode which is confused by this.
+ #
+ # We need to recreate these files for each test, as the compiler may
+ # overwrite some of them when testing with obscure command lines.
+ # This happens at least with the AIX C compiler.
+ : > sub/conftest.c
+ for i in 1 2 3 4 5 6; do
+ echo '#include "conftst'$i'.h"' >> sub/conftest.c
+ # Using `: > sub/conftst$i.h' creates only sub/conftst1.h with
+ # Solaris 8's {/usr,}/bin/sh.
+ touch sub/conftst$i.h
+ done
+ echo "${am__include} ${am__quote}sub/conftest.Po${am__quote}" > confmf
+
+ # We check with `-c' and `-o' for the sake of the "dashmstdout"
+ # mode. It turns out that the SunPro C++ compiler does not properly
+ # handle `-M -o', and we need to detect this. Also, some Intel
+ # versions had trouble with output in subdirs
+ am__obj=sub/conftest.${OBJEXT-o}
+ am__minus_obj="-o $am__obj"
+ case $depmode in
+ gcc)
+ # This depmode causes a compiler race in universal mode.
+ test "$am__universal" = false || continue
+ ;;
+ nosideeffect)
+ # after this tag, mechanisms are not by side-effect, so they'll
+ # only be used when explicitly requested
+ if test "x$enable_dependency_tracking" = xyes; then
+ continue
+ else
+ break
+ fi
+ ;;
+ msvc7 | msvc7msys | msvisualcpp | msvcmsys)
+ # This compiler won't grok `-c -o', but also, the minuso test has
+ # not run yet. These depmodes are late enough in the game, and
+ # so weak that their functioning should not be impacted.
+ am__obj=conftest.${OBJEXT-o}
+ am__minus_obj=
+ ;;
+ none) break ;;
+ esac
+ if depmode=$depmode \
+ source=sub/conftest.c object=$am__obj \
+ depfile=sub/conftest.Po tmpdepfile=sub/conftest.TPo \
+ $SHELL ./depcomp $depcc -c $am__minus_obj sub/conftest.c \
+ >/dev/null 2>conftest.err &&
+ grep sub/conftst1.h sub/conftest.Po > /dev/null 2>&1 &&
+ grep sub/conftst6.h sub/conftest.Po > /dev/null 2>&1 &&
+ grep $am__obj sub/conftest.Po > /dev/null 2>&1 &&
+ ${MAKE-make} -s -f confmf > /dev/null 2>&1; then
+ # icc doesn't choke on unknown options, it will just issue warnings
+ # or remarks (even with -Werror). So we grep stderr for any message
+ # that says an option was ignored or not supported.
+ # When given -MP, icc 7.0 and 7.1 complain thusly:
+ # icc: Command line warning: ignoring option '-M'; no argument required
+ # The diagnosis changed in icc 8.0:
+ # icc: Command line remark: option '-MP' not supported
+ if (grep 'ignoring option' conftest.err ||
+ grep 'not supported' conftest.err) >/dev/null 2>&1; then :; else
+ am_cv_$1_dependencies_compiler_type=$depmode