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[/] [openrisc/] [trunk/] [gnu-src/] [gdb-7.1/] [config/] [depstand.m4] - Rev 230
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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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