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Diffstat (limited to 'config/depstand.m4')
| -rw-r--r-- | config/depstand.m4 | 136 |
1 files changed, 136 insertions, 0 deletions
diff --git a/config/depstand.m4 b/config/depstand.m4 new file mode 100644 index 0000000..8f936e0 --- /dev/null +++ b/config/depstand.m4 @@ -0,0 +1,136 @@ +## -*- Autoconf -*- + +# Copyright (C) 1999, 2000, 2001, 2002, 2003, 2004, 2005 +# 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], [mkdir $DEPDIR], [DEPDIR=$DEPDIR]) +]) |