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- # serial 7 -*- Autoconf -*-
-
- # Copyright (C) 1999, 2000, 2001, 2002, 2003, 2004
- # Free Software Foundation, Inc.
-
- # This program is free software; you can redistribute it and/or modify
- # it under the terms of the GNU General Public License as published by
- # the Free Software Foundation; either version 2, or (at your option)
- # any later version.
-
- # This program is distributed in the hope that it will be useful,
- # but WITHOUT ANY WARRANTY; without even the implied warranty of
- # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- # GNU General Public License for more details.
-
- # You should have received a copy of the GNU General Public License
- # along with this program; if not, write to the Free Software
- # Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
- # 02111-1307, USA.
-
-
- # There are a few dirty hacks below to avoid letting `AC_PROG_CC' be
- # written in clear, in which case automake, when reading aclocal.m4,
- # will think it sees a *use*, and therefore will trigger all it's
- # C support machinery. Also note that it means that autoscan, seeing
- # CC etc. in the Makefile, will ask for an AC_PROG_CC use...
-
-
-
- # _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'],
- [$1], GCJ, [depcc="$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 "$am_depcomp"; then
- # We make a subdir and do the tests there. Otherwise we can end up
- # making bogus files that we don't know about and never remove. For
- # instance it was reported that on HP-UX the gcc test will end up
- # making a dummy file named `D' -- because `-MD' means `put the output
- # in D'.
- mkdir conftest.dir
- # Copy depcomp to subdir because otherwise we won't find it if we're
- # using a relative directory.
- cp "$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
- 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
-
- case $depmode in
- nosideeffect)
- # after this tag, mechanisms are not by side-effect, so they'll
- # only be used when explicitly requested
- if test "x$enable_dependency_tracking" = xyes; then
- continue
- else
- break
- fi
- ;;
- none) break ;;
- esac
- # 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.
- if depmode=$depmode \
- source=sub/conftest.c object=sub/conftest.${OBJEXT-o} \
- depfile=sub/conftest.Po tmpdepfile=sub/conftest.TPo \
- $SHELL ./depcomp $depcc -c -o sub/conftest.${OBJEXT-o} sub/conftest.c \
- >/dev/null 2>conftest.err &&
- grep sub/conftst6.h sub/conftest.Po > /dev/null 2>&1 &&
- grep sub/conftest.${OBJEXT-o} 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
- break
- fi
- fi
- done
-
- cd ..
- rm -rf conftest.dir
- else
- am_cv_$1_dependencies_compiler_type=none
- fi
- ])
- AC_SUBST([$1DEPMODE], [depmode=$am_cv_$1_dependencies_compiler_type])
- AM_CONDITIONAL([am__fastdep$1], [
- test "x$enable_dependency_tracking" != xno \
- && test "$am_cv_$1_dependencies_compiler_type" = gcc3])
- ])
-
-
- # AM_SET_DEPDIR
- # -------------
- # Choose a directory name for dependency files.
- # This macro is AC_REQUIREd in _AM_DEPENDENCIES
- AC_DEFUN([AM_SET_DEPDIR],
- [AC_REQUIRE([AM_SET_LEADING_DOT])dnl
- AC_SUBST([DEPDIR], ["${am__leading_dot}deps"])dnl
- ])
-
-
- # AM_DEP_TRACK
- # ------------
- AC_DEFUN([AM_DEP_TRACK],
- [AC_ARG_ENABLE(dependency-tracking,
- [ --disable-dependency-tracking speeds up one-time build
- --enable-dependency-tracking do not reject slow dependency extractors])
- if test "x$enable_dependency_tracking" != xno; then
- am_depcomp="$ac_aux_dir/depcomp"
- AMDEPBACKSLASH='\'
- fi
- AM_CONDITIONAL([AMDEP], [test "x$enable_dependency_tracking" != xno])
- AC_SUBST([AMDEPBACKSLASH])
- ])
-