kmx git

# serial 3

# 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" or "OBJC".
# We try a few techniques and use that to set a single cache variable.
AC_DEFUN([AM_DEPENDENCIES],
[AC_REQUIRE([AM_SET_DEPDIR])dnl
AC_REQUIRE([AM_OUTPUT_DEPENDENCY_COMMANDS])dnl
ifelse([$1], CC,
       [AC_REQUIRE([AC_PROG_][CC])dnl
AC_REQUIRE([AC_PROG_][CPP])
depcc="$CC"
depcpp="$CPP"],
       [$1], CXX, [AC_REQUIRE([AC_PROG_][CXX])dnl
AC_REQUIRE([AC_PROG_][CXXCPP])
depcc="$CXX"
depcpp="$CXXCPP"],
       [$1], OBJC, [am_cv_OBJC_dependencies_compiler_type=gcc],
       [AC_REQUIRE([AC_PROG_][$1])dnl
depcc="$$1"
depcpp=""])

AC_REQUIRE([AM_MAKE_INCLUDE])

AC_CACHE_CHECK([dependency style of $depcc],
               [am_cv_$1_dependencies_compiler_type],
[if test -z "$AMDEP"; 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 confdir
  # Copy depcomp to subdir because otherwise we won't find it if we're
  # using a relative directory.
  cp "$am_depcomp" confdir
  cd confdir

  am_cv_$1_dependencies_compiler_type=none
  for depmode in `sed -n ['s/^#*\([a-zA-Z0-9]*\))$/\1/p'] < "./depcomp"`; do
    # 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.
    echo '#include "conftest.h"' > conftest.c
    echo 'int i;' > conftest.h

    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=conftest.c object=conftest.o \
       depfile=conftest.Po tmpdepfile=conftest.TPo \
       $SHELL ./depcomp $depcc -c conftest.c -o conftest.o >/dev/null 2>&1 &&
       grep conftest.h conftest.Po > /dev/null 2>&1; then
      am_cv_$1_dependencies_compiler_type="$depmode"
      break
    fi
  done

  cd ..
  rm -rf confdir
else
  am_cv_$1_dependencies_compiler_type=none
fi
])
$1DEPMODE="depmode=$am_cv_$1_dependencies_compiler_type"
AC_SUBST([$1DEPMODE])
])


# AM_SET_DEPDIR
# -------------
# Choose a directory name for dependency files.
# This macro is AC_REQUIREd in AM_DEPENDENCIES
AC_DEFUN([AM_SET_DEPDIR],
[if test -d .deps || mkdir .deps 2> /dev/null || test -d .deps; then
  DEPDIR=.deps
  # We redirect because .deps might already exist and be populated.
  # In this situation we don't want to see an error.
  rmdir .deps > /dev/null 2>&1
else
  DEPDIR=_deps
fi
AC_SUBST(DEPDIR)
])


# AM_DEP_TRACK
# ------------
AC_DEFUN([AM_DEP_TRACK],
[AC_ARG_ENABLE(dependency-tracking,
[  --disable-dependency-tracking Speeds up one-time builds
  --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])
pushdef([subst], defn([AC_SUBST]))
subst(AMDEPBACKSLASH)
popdef([subst])
])
kc3-lang/automake/m4/depend.m4

Commit

m4/depend.m4
