Removed the tl_* macros, as dpkg doesn't use them, so w...

Author: doogie
Date: 1999-12-10 03:20:21 GMT
Removed the tl_* macros, as dpkg doesn't use them, so why should we?
Added smp configure support detection, so on cpu >= 2, we compile in
parallel.  The default multiplier is 2(2 processes per cpu) on machines
with more than one cpu.  Non-smp boxen compile 1 process at a time.

4 files changed, 83 insertions, 434 deletions

diff --git a/buildlib/defaults.mak b/buildlib/defaults.mak
index d04b67ffa..3e145f673 100644
--- a/buildlib/defaults.mak
+++ b/buildlib/defaults.mak
@@ -134,3 +134,16 @@ else
   endef
  endif
 endif	
+
+ifeq ($(NUM_PROCS),1)
+  PARALLEL_RUN=no
+endif
+
+ifndef PARALLEL_RUN
+ PARALLEL_RUN=yes
+ .EXPORT: PARALLEL_RUN
+ ifneq ($(NUM_PROCS),)
+# handle recursion
+  MAKEFLAGS += -j $(NUM_PROCS)
+ endif
+endif
diff --git a/buildlib/environment.mak.in b/buildlib/environment.mak.in
index 43827d508..6a1d77a41 100644
--- a/buildlib/environment.mak.in
+++ b/buildlib/environment.mak.in
@@ -6,6 +6,7 @@ CC = @CC@
 CPPFLAGS+= @CPPFLAGS@ @DEFS@ -D_REENTRANT
 CXX = @CXX@
 CXXFLAGS+= @CXXFLAGS@ @X_CFLAGS@
+NUM_PROCS = @NUM_PROCS@
 
 # Linker stuff
 PICFLAGS+= -fPIC -DPIC
diff --git a/buildlib/tl_canon.m4 b/buildlib/tl_canon.m4
deleted file mode 100644
index 79933a697..000000000
--- a/buildlib/tl_canon.m4
+++ /dev/null
@@ -1,209 +0,0 @@
-# Our own versions of the other canonicalizing stuff
-
-dnl replace AC_CANONICAL_xxx
-
-undefine([AC_CANONICAL_HOST])
-define([AC_CANONICAL_HOST], [tl_CANONICAL_HOST])
-undefine([AC_CANONICAL_BUILD])
-define([AC_CANONICAL_BUILD], [tl_CANONICAL_BUILD])
-undefine([AC_CANONICAL_TARGET])
-define([AC_CANONICAL_TARGET], [tl_CANONICAL_TARGET])
-undefine([AC_CANONICAL_SYSTEM])
-define([AC_CANONICAL_SYSTEM], [tl_CANONICAL_SYSTEM])
-
-dnl Canonicalize the host, target, and build system types.
-AC_DEFUN(tl_CANONICAL_SYSTEM,
-[AC_REQUIRE([AC_CONFIG_AUX_DIR_DEFAULT])dnl
-AC_PROVIDE([AC_CANONICAL_SYSTEM])dnl
-AC_BEFORE([$0], [AC_ARG_PROGRAM])
-# Do some error checking and defaulting for the host and target type.
-# The inputs are:
-#    configure --host=HOST --target=TARGET --build=BUILD NONOPT
-#
-# The rules are:
-# 1. You are not allowed to specify --host, --target, and nonopt at the
-#    same time.
-# 2. Host defaults to nonopt.
-# 3. If nonopt is not specified, then host defaults to the current host,
-#    as determined by config.guess.
-# 4. Target and build default to nonopt.
-# 5. If nonopt is not specified, then target and build default to host.
-
-# The aliases save the names the user supplied, while $host etc.
-# will get canonicalized.
-case $host---$target---$nonopt in
-NONE---*---* | *---NONE---* | *---*---NONE) ;;
-*) AC_MSG_ERROR(can only configure for one host and one target at a time) ;;
-esac
-
-tl_CANONICAL_HOST
-tl_CANONICAL_TARGET
-tl_CANONICAL_BUILD
-test "$host_alias" != "$target_alias" &&
-  test "$program_prefix$program_suffix$program_transform_name" = \
-    NONENONEs,x,x, &&
-  program_prefix=${target_alias}-
-AC_CHECK_TOOL_PREFIX
-])
-
-dnl Subroutines of tl_CANONICAL_SYSTEM.
-
-AC_DEFUN(tl_CANONICAL_HOST,
-[AC_REQUIRE([AC_CONFIG_AUX_DIR_DEFAULT])dnl
-AC_PROVIDE([AC_CANONICAL_HOST])dnl
-
-# Make sure we can run config.sub.
-if $ac_config_sub sun4 >/dev/null 2>&1; then :
-else AC_MSG_ERROR(can not run $ac_config_sub)
-fi
-
-AC_MSG_CHECKING(host system type)
-
-dnl Set host_alias.
-
-if test "${GCC-no}" = "yes" -a "$nonopt" = "NONE"; then
-changequote(, )dnl
-  libgcc="`${CC} --print-libgcc-file-name`"
-  host_alias="`expr ${libgcc} : '.*/gcc-lib/\([^/]*\)/.*'`"
-  case ${host_alias} in
-   *-linux{,elf,aout})
-    host_alias="`echo ${host_alias} | sed 's/\([^-]*\)-linux.*/\1/'`"
-changequote([, ])dnl
-    if ar p "${libgcc}" __main.o 2>/dev/null | file - 2>/dev/null | grep ELF >/dev/null; then
-      host_alias="${host_alias}-linux"
-    else
-      host_alias="${host_alias}-linuxaout"
-    fi ;;
-  esac
-  host_guessed=y
-else
-  host_alias=$host
-  case "$host_alias" in
-  NONE)
-    case "$nonopt" in
-    NONE)
-      if host_alias=`$ac_config_guess`; then host_guessed=y
-      else AC_MSG_ERROR(can not guess host type; you must specify one)
-      fi ;;
-    *) host_alias=$nonopt ;;
-    esac ;;
-  esac
-fi
-
-dnl Set the other host vars.
-changequote(<<, >>)dnl
-host=`$ac_config_sub $host_alias`
-host_cpu=`echo $host | sed 's/^\([^-]*\)-\([^-]*\)-\(.*\)$/\1/'`
-host_vendor=`echo $host | sed 's/^\([^-]*\)-\([^-]*\)-\(.*\)$/\2/'`
-host_os=`echo $host | sed 's/^\([^-]*\)-\([^-]*\)-\(.*\)$/\3/'`
-changequote([, ])dnl
-AC_MSG_RESULT($host)
-AC_SUBST(host)dnl
-AC_SUBST(host_alias)dnl
-AC_SUBST(host_cpu)dnl
-AC_SUBST(host_vendor)dnl
-AC_SUBST(host_os)dnl
-])
-
-dnl Internal use only.
-AC_DEFUN(tl_CANONICAL_TARGET,
-[AC_REQUIRE([AC_CONFIG_AUX_DIR_DEFAULT])dnl
-AC_REQUIRE([AC_PROG_CC])dnl
-AC_REQUIRE([AC_CANONICAL_HOST])dnl
-AC_PROVIDE([AC_CANONICAL_TARGET])dnl
-AC_MSG_CHECKING(target system type)
-
-dnl Set target_alias.
-target_alias=$target
-case "$target_alias" in
-NONE)
-  case $nonopt in
-  NONE)
-  target_cpu="`dpkg --print-architecture`"
-  if test "$target_cpu" = ""; then
-   target_alias=$host_alias
-  else
-   target_alias="`echo ${host_alias} | sed 's/[^-]*-/${target_cpu}-/'`"
-  fi
-  ;;
-  *) target_alias=$nonopt ;;
-  esac ;;
-esac
-
-dnl Set the other target vars.
-if test $target_alias = $host_alias; then
-  target=$host
-  target_cpu=$host_cpu
-  target_vendor=$host_vendor
-  target_os=$host_os
-elif test $target_alias = "$build_alias"; then
-  target=$build
-  target_cpu=$build_cpu
-  target_vendor=$build_vendor
-  target_os=$build_os
-else
-changequote(<<, >>)dnl
-  target=`$ac_config_sub $target_alias`
-  target_cpu=`echo $target | sed 's/^\([^-]*\)-\([^-]*\)-\(.*\)$/\1/'`
-  target_vendor=`echo $target | sed 's/^\([^-]*\)-\([^-]*\)-\(.*\)$/\2/'`
-  target_os=`echo $target | sed 's/^\([^-]*\)-\([^-]*\)-\(.*\)$/\3/'`
-changequote([, ])dnl
-fi
-AC_MSG_RESULT($target)
-AC_SUBST(target)dnl
-AC_SUBST(target_alias)dnl
-AC_SUBST(target_cpu)dnl
-AC_SUBST(target_vendor)dnl
-AC_SUBST(target_os)dnl
-])
-
-AC_DEFUN(tl_CANONICAL_BUILD,
-[AC_REQUIRE([AC_CONFIG_AUX_DIR_DEFAULT])dnl
-AC_REQUIRE([AC_CANONICAL_HOST])dnl
-AC_PROVIDE([AC_CANONICAL_BUILD])dnl
-
-# Make sure we can run config.sub.
-#if $ac_config_sub sun4 >/dev/null 2>&1; then :
-#else AC_MSG_ERROR(can not run $ac_config_sub)
-#fi
-
-AC_MSG_CHECKING(build system type)
-
-dnl Set build_alias.
-build_alias=$build
-case "$build_alias" in
-NONE)
-  case $nonopt in
-  NONE)
-    if test "$host_guessed" = "y"; then
-      build_alias=$host_alias
-    else
-      if build_alias=`$ac_config_guess`; then :
-      else build_alias=$host_alias
-      fi
-    fi ;;
-  *) build_alias=$nonopt ;;
-  esac ;;
-esac
-
-dnl Set the other build vars.
-if test $build_alias = $host_alias; then
-  build=$host
-  build_cpu=$host_cpu
-  build_vendor=$host_vendor
-  build_os=$host_os
-else
-changequote(<<, >>)dnl
-  build=`$ac_config_sub $build_alias`
-  build_cpu=`echo $build | sed 's/^\([^-]*\)-\([^-]*\)-\(.*\)$/\1/'`
-  build_vendor=`echo $build | sed 's/^\([^-]*\)-\([^-]*\)-\(.*\)$/\2/'`
-  build_os=`echo $build | sed 's/^\([^-]*\)-\([^-]*\)-\(.*\)$/\3/'`
-changequote([, ])dnl
-fi
-AC_MSG_RESULT($build)
-AC_SUBST(build)dnl
-AC_SUBST(build_alias)dnl
-AC_SUBST(build_cpu)dnl
-AC_SUBST(build_vendor)dnl
-AC_SUBST(build_os)dnl
-])
diff --git a/buildlib/tools.m4 b/buildlib/tools.m4
index 88a06dfab..de9c8a103 100644
--- a/buildlib/tools.m4
+++ b/buildlib/tools.m4
@@ -1,231 +1,75 @@
-# tl_CHECK_TOOL_PREFIX will work _BEFORE_ AC_CANONICAL_HOST, etc., has been
-# called. It should be called again after these have been called.
-#
-# Basically we want to check if the host alias specified by the user is
-# different from the build alias. The rules work like this:-
-#
-# If host is not specified, it defaults to NONOPT
-# If build is not specified, it defaults to NONOPT
-# If nonopt is not specified, we guess all other values
-
-dnl Replace AC_CHECK_TOOL_PREFIX
-undefine([AC_CHECK_TOOL_PREFIX])
-define([AC_CHECK_TOOL_PREFIX], [tl_CHECK_TOOL_PREFIX])
-
-AC_DEFUN(tl_CHECK_TOOL_PREFIX,
-[AC_PROVIDE([AC_CHECK_TOOL_PREFIX])
-AC_BEFORE([AC_CANONICAL_HOST])
-AC_BEFORE([AC_CANONICAL_BUILD])
-dnl Quick check
-if test "$host_alias" = ""; then
-  if test $host = NONE; then
-    thost=$nonopt
-  else
-    thost=$host
-  fi
-  if test $thost != $build -a $thost != NONE; then
-    ac_tool_prefix=${thost}-
-    ac_tool_dir=${thost}
-  else
-    ac_tool_prefix=
-    ac_tool_dir=
-  fi
-else
-  if test $host != $build; then
-    ac_tool_prefix=${host_alias}-
-    ac_tool_dir=${host_alias}
-  else
-    ac_tool_prefix=
-    ac_tool_dir=
-  fi
-fi
-])
-
-dnl replacement for AC_CHECK_TOOL
-undefine([AC_CHECK_TOOL])
-define([AC_CHECK_TOOL], [tl_CHECK_TOOL($1, $2, $3, $4)])
-
-dnl tl_CHECK_TOOL - AC_CHECK_TOOL, with a couple of extra checks
-dnl tl_CHECK_TOOL(VARIABLE, PROG-TO-CHECK-FOR[, VALUE-IF-NOT-FOUND [, PATH
-dnl [, REJECT]])
-AC_DEFUN(tl_CHECK_TOOL,
-[AC_REQUIRE([AC_CHECK_TOOL_PREFIX])
-AC_CHECK_PROG($1, ${ac_tool_prefix}$2, ${ac_tool_prefix}$2,
-	      ifelse([$3], , [$2], ), $4, $5)
-if test -z "$ac_cv_prog_$1_dir";then ac_cv_prog_$1_dir=""; fi
-if test "$ac_tool_dir" != ""; then
-  if test -z "$ac_cv_prog_$1" -a "$5" != "/usr/${ac_tool_dir}/bin/$2" -a \
-	"$5" != "/usr/local/${ac_tool_dir}/bin/$2"; then
-    if test -f /usr/${ac_tool_dir}/bin/$2; then $1="/usr/${ac_tool_dir}/bin/$2"; ac_cv_prog_$1_dir=/usr/${ac_tool_dir}
-    elif test -f /usr/local/${ac_tool_dir}/bin/$2; then $1="/usr/local/${ac_tool_dir}/bin/$2"; ac_cv_prog_$1_dir=/usr/local/${ac_tool_dir}
-    fi
-  fi
-fi
-ifelse([$3], , , [
-if test -z "$ac_cv_prog_$1"; then
-if test -n "$ac_tool_prefix"; then
-  AC_CHECK_PROG($1, $2, $2, $3, $4, $5)
-else
-  $1="$3"
-fi
-fi])
-])
-
-dnl tl_CHECK_TOOLS -
-dnl  do a tl_CHECK_TOOL for multiple tools (like AC_CHECK_PROGS)
-dnl tl_CHECK_TOOLS(VARIABLE, PROGS-TO-CHECK-FOR [, VALUE-IF-NOT-FOUND
-dnl		   [, PATH]])
-AC_DEFUN(tl_CHECK_TOOLS,
-[for ac_tool in $2
-do
-tl_CHECK_TOOL($1, [$]ac_tool, [$]ac_tool, , $4)
-test -n "[$]$1" && break
-done
-ifelse([$3], , , [test -n "[$]$1" || $1="$3"
-])])
-
-dnl replace AC_PROG_CC and AC_PROG_CXX
-undefine([AC_PROG_CC])
-define([AC_PROG_CC], [tl_PROG_CC])
-undefine([AC_PROG_CXX])
-define([AC_PROG_CXX], [tl_PROG_CXX])
-
-dnl tl_PROG_CC, tl_PROG_CXX - same as old AC_PROG_CC and AC_PROG_CXX, but
-dnl use AC_CHECK_TOOL/tl_CHECK_TOOLS instead of AC_CHECK_PROG, etc.
-AC_DEFUN(tl_PROG_CC,
-[AC_BEFORE([$0], [AC_PROG_CPP])dnl
-AC_PROVIDE([AC_PROG_CC])dnl
-tl_CHECK_TOOL(CC, gcc, gcc)
-if test -z "$CC"; then
-  AC_CHECK_TOOL(CC, cc, cc, , , /usr/ucb/cc)
-  test -z "$CC" && AC_MSG_ERROR([no acceptable cc found in \$PATH])
-fi
-if test -n "$ac_tool_prefix" -a "`echo $CC | grep '$ac_tool_prefix'`" = "" \
-	-a "`echo $CC | grep -- '-b'`" = ""; then
-  if test -z "$ac_cv_prog_CC_dir" && $CC -v 2>&1 | grep gcc >/dev/null 2>&1 ; then
-    AC_CACHE_CHECK([if $CC -b${ac_tool_dir} works], tl_cv_prog_cc_bhost,[
-    old_cc="${CC}"
-    CC="${CC} -b${ac_tool_dir}"
-    AC_LANG_SAVE
-    AC_LANG_C
-    AC_TRY_COMPILER([main(){return(0);}], tl_cv_prog_cc_bhost, ac_cv_prog_cc_cross)
-    AC_LANG_RESTORE])
-    if test $tl_cv_prog_cc_bhost = "yes"; then
-      ac_cv_prog_cc_works=yes
-      cctest=yes
-    else
-      CC="${old_cc}"
-    fi
-  fi
-fi
-
-if test "$cctest" != "yes"; then
-  tl_PROG_CC_WORKS
-fi
-AC_PROG_CC_GNU
-
-if test $ac_cv_prog_gcc = yes; then
-  GCC=yes
-dnl Check whether -g works, even if CFLAGS is set, in case the package
-dnl plays around with CFLAGS (such as to build both debugging and
-dnl normal versions of a library), tasteless as that idea is.
-  ac_test_CFLAGS="${CFLAGS+set}"
-  ac_save_CFLAGS="$CFLAGS"
-  CFLAGS=
-  AC_PROG_CC_G
-  if test "$ac_test_CFLAGS" = set; then
-    CFLAGS="$ac_save_CFLAGS"
-  elif test $ac_cv_prog_cc_g = yes; then
-    CFLAGS="-g -O2"
-  else
-    CFLAGS="-O2"
-  fi
-else
-  GCC=
-  test "${CFLAGS+set}" = set || CFLAGS="-g"
-fi
+AC_DEFUN(ah_HAVE_GETCONF,
+	[AC_ARG_WITH(getconf,
+		[  --with-getconf          Enable automagical buildtime configuration],
+		[if test "$withval" = "yes"; then
+			AC_PATH_PROG(GETCONF, getconf)
+		elif test ! "$withval" = "no";then 
+			AC_MSG_CHECKING([getconf])
+			AC_MSG_RESULT([$withval])
+			GETCONF=$withval
+		fi],
+		[AC_PATH_PROG(GETCONF, getconf)]
+	)
+	AC_SUBST(GETCONF)
 ])
 
-AC_DEFUN(tl_PROG_CXX,
-[AC_BEFORE([$0], [AC_PROG_CXXCPP])dnl
-AC_PROVIDE([AC_PROG_CXX])dnl
-tl_CHECK_TOOLS(CXX, $CCC c++ g++ gcc CC cxx cc++, gcc)
-if test -n "$CXX"; then
-  if test -n "$ac_tool_prefix" -a "`echo $CXX | grep '$ac_tool_prefix'`" = "" \
-	-a "`echo $CXX | grep -- '-b'`" = ""; then
-    if test -z "$ac_cv_prog_CXX_dir" && $CXX -v 2>&1 | grep gcc >/dev/null 2>&1; then
-      AC_CACHE_CHECK([if $CXX -b${ac_tool_dir} works], tl_cv_prog_cxx_bhost,[
-      old_cxx="${CXX}"
-      CXX="${CXX} -b${ac_tool_dir}"
-      AC_LANG_SAVE
-      AC_LANG_CPLUSPLUS
-      AC_TRY_COMPILER([main(){return(0);}], tl_cv_prog_cxx_bhost, ac_cv_prog_cxx_cross)
-      AC_LANG_RESTORE])
-      if test $tl_cv_prog_cxx_bhost = "yes"; then
-	ac_cv_prog_cxx_works=yes
-	cxxtest=yes
-      else
-	CXX="${old_cxx}"
-      fi
-    fi
-  fi
-  
-  if test "$cxxtest" != "yes"; then
-    tl_PROG_CXX_WORKS
-  fi
-  AC_PROG_CXX_GNU
-  
-  if test $ac_cv_prog_gxx = yes; then
-    GXX=yes
-dnl Check whether -g works, even if CXXFLAGS is set, in case the package
-dnl plays around with CXXFLAGS (such as to build both debugging and
-dnl normal versions of a library), tasteless as that idea is.
-    ac_test_CXXFLAGS="${CXXFLAGS+set}"
-    ac_save_CXXFLAGS="$CXXFLAGS"
-    CXXFLAGS=
-    AC_PROG_CXX_G
-    if test "$ac_test_CXXFLAGS" = set; then
-      CXXFLAGS="$ac_save_CXXFLAGS"
-    elif test $ac_cv_prog_cxx_g = yes; then
-      CXXFLAGS="-g -O2"
-    else
-      CXXFLAGS="-O2"
-    fi
-  else
-    GXX=
-    test "${CXXFLAGS+set}" = set || CXXFLAGS="-g"
-  fi
-fi
+AC_DEFUN(ah_NUM_CPUS,
+	[AC_REQUIRE([ah_HAVE_GETCONF])
+	AC_MSG_CHECKING([number of cpus])
+	AC_ARG_WITH(cpus,
+		[  --with-cpus             The number of cpus to be used for building(see --with-procs, default 1)],
+		[if test "$withval" = "yes"; then
+			if test "$GETCONF";then
+				NUM_CPUS=`$GETCONF _NPROCESSORS_ONLN 2>/dev/null`
+			else
+				NUM_CPUS=1
+			fi
+		elif test ! "$withval" = "no";then
+			NUM_CPUS=$withval
+		fi],
+		[if test "$GETCONF";then
+			NUM_CPUS=`$GETCONF _NPROCESSORS_ONLN 2>/dev/null`
+		else
+			NUM_CPUS=1
+		fi]
+	)
+	if test $NUM_CPUS = 1 ;then
+		default_PROC_MULTIPLY=1
+	else
+		default_PROC_MULTIPLY=2
+	fi
+	AC_MSG_RESULT([$NUM_CPUS])
+	AC_SUBST(NUM_CPUS)
 ])
-
-AC_DEFUN(tl_PROG_CC_WORKS,
-[AC_PROVIDE(AC_PROG_CC_WORKS)
-AC_CACHE_CHECK([whether the C compiler ($CC $CFLAGS $LDFLAGS) works],
-	ac_cv_prog_cc_works, [
-AC_LANG_SAVE
-AC_LANG_C
-AC_TRY_COMPILER([main(){return(0);}], ac_cv_prog_cc_works, ac_cv_prog_cc_cross)
-AC_LANG_RESTORE
-if test $ac_cv_prog_cc_works = no; then
-  AC_MSG_ERROR([installation or configuration problem: C compiler cannot create executables.])
-fi])
-AC_MSG_CHECKING([whether the C compiler ($CC $CFLAGS $LDFLAGS) is a cross-compiler])
-AC_MSG_RESULT($ac_cv_prog_cc_cross)
-cross_compiling=$ac_cv_prog_cc_cross
+AC_DEFUN(ah_PROC_MULTIPLY,
+	[AC_REQUIRE([ah_NUM_CPUS])
+	AC_MSG_CHECKING([processor multiplier])
+	AC_ARG_WITH(proc-multiply,
+		[  --with-proc-multiply    Multiply this * number of cpus for parallel making(default 2).],
+		[if test "$withval" = "yes"; then
+			PROC_MULTIPLY=$default_PROC_MULTIPLY
+		elif test ! "$withval" = "no";then
+			PROC_MULTIPLY=$withval
+		fi],
+		[PROC_MULTIPLY=$default_PROC_MULTIPLY]
+	)
+	AC_MSG_RESULT([$PROC_MULTIPLY])
+	AC_SUBST(PROC_MULTIPLY)
 ])
 
-AC_DEFUN(tl_PROG_CXX_WORKS,
-[AC_PROVIDE(AC_PROG_CXX_WORKS)
-AC_CACHE_CHECK([whether the C++ compiler ($CXX $CXXFLAGS $LDFLAGS) works],
-	ac_cv_prog_cxx_works, [
-AC_LANG_SAVE
-AC_LANG_CPLUSPLUS
-AC_TRY_COMPILER([main(){return(0);}], ac_cv_prog_cxx_works, ac_cv_prog_cxx_cross)
-AC_LANG_RESTORE
-if test $ac_cv_prog_cxx_works = no; then
-  AC_MSG_ERROR([installation or configuration problem: C++ compiler cannot create executables.])
-fi])
-AC_MSG_CHECKING([whether the C++ compiler ($CXX $CXXFLAGS $LDFLAGS) is a cross-compiler])
-AC_MSG_RESULT($ac_cv_prog_cxx_cross)
-cross_compiling=$ac_cv_prog_cxx_cross
+AC_DEFUN(ah_NUM_PROCS,
+	[AC_REQUIRE([ah_PROC_MULTIPLY])
+	AC_REQUIRE([ah_NUM_CPUS])
+	AC_MSG_CHECKING([number of processes to run during make])
+	AC_ARG_WITH(procs,
+		[  --with-procs            The number of processes to run in parallel during make(num_cpus * multiplier).],
+		[if test "$withval" = "yes"; then
+			let "NUM_PROCS=$NUM_CPUS*$PROC_MULTIPLY"
+		elif test ! "$withval" = "no";then
+			NUM_PROCS=$withval
+		fi],
+		[let "NUM_PROCS=$NUM_CPUS*$PROC_MULTIPLY"]
+	)
+	AC_MSG_RESULT([$NUM_PROCS])
+	AC_SUBST(NUM_PROCS)
 ])