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- ## -*- Autoconf -*-
- # Copyright (C) 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2007
- # Free Software Foundation, Inc.
- #
- # This file is free software; the Free Software Foundation
- # gives unlimited permission to copy and/or distribute it,
- # with or without modifications, as long as this notice is preserved.
- # serial 8
- # Based on depend.m4 from automake 1.9, modified for standalone use in
- # an environment where GNU make is required.
- # ZW_PROG_COMPILER_DEPENDENCIES
- # -----------------------------
- # Variant of _AM_DEPENDENCIES which just does the dependency probe and
- # sets fooDEPMODE accordingly. Cache-variable compatible with
- # original; not side-effect compatible. As the users of this macro
- # may require accurate dependencies for correct builds, it does *not*
- # honor --disable-dependency-checking, and failure to detect a usable
- # method is an error. depcomp is assumed to be located in
- # $ac_aux_dir.
- #
- # FIXME: Should use the Autoconf 2.5x language-selection mechanism.
- AC_DEFUN([ZW_PROG_COMPILER_DEPENDENCIES],
- [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=])
- am_depcomp=$ac_aux_dir/depcomp
- AC_CACHE_CHECK([dependency style of $depcc],
- [am_cv_$1_dependencies_compiler_type],
- [if test -f "$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
- if test $depmode = none; then break; fi
- _AS_ECHO([$as_me:$LINENO: trying $depmode], AS_MESSAGE_LOG_FD)
- # 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$i.h
- done
- echo "include sub/conftest.Po" > confmf
- # We check with `-c' and `-o' for the sake of the "dashmstdout"
- # mode. It turns out that the SunPro C++ compiler does not properly
- # handle `-M -o', and we need to detect this.
- depcmd="depmode=$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"
- echo "| $depcmd" | sed -e 's/ */ /g' >&AS_MESSAGE_LOG_FD
- if env $depcmd > conftest.err 2>&1 &&
- grep sub/conftst6.h sub/conftest.Po >>conftest.err 2>&1 &&
- grep sub/conftest.${OBJEXT-o} sub/conftest.Po >>conftest.err 2>&1 &&
- ${MAKE-make} -s -f confmf >>conftest.err 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
- _AS_ECHO([$as_me:$LINENO: success], AS_MESSAGE_LOG_FD)
- break
- fi
- fi
- _AS_ECHO([$as_me:$LINENO: failure, diagnostics are:], AS_MESSAGE_LOG_FD)
- sed -e 's/^/| /' < conftest.err >&AS_MESSAGE_LOG_FD
- done
- cd ..
- rm -rf conftest.dir
- else
- am_cv_$1_dependencies_compiler_type=none
- fi
- ])
- if test x${am_cv_$1_dependencies_compiler_type-none} = xnone
- then AC_MSG_ERROR([no usable dependency style found])
- else AC_SUBST([$1DEPMODE], [depmode=$am_cv_$1_dependencies_compiler_type])
- fi
- ])
- # AM_SET_DEPDIR
- # -------------
- # Choose a directory name for dependency files.
- AC_DEFUN([AM_SET_DEPDIR],
- [AC_REQUIRE([AM_SET_LEADING_DOT])dnl
- AC_SUBST([DEPDIR], ["${am__leading_dot}deps"])dnl
- ])
- # ZW_CREATE_DEPDIR
- # ----------------
- # As AM_SET_DEPDIR, but also create the directory at config.status time.
- AC_DEFUN([ZW_CREATE_DEPDIR],
- [AC_REQUIRE([AM_SET_DEPDIR])dnl
- AC_CONFIG_COMMANDS([depdir], [$SHELL $ac_aux_dir/mkinstalldirs $DEPDIR],
- [ac_aux_dir=$ac_aux_dir DEPDIR=$DEPDIR])
- ])
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