allow build settings to be overriden by adding mk/validate.mk
[ghc-hetmet.git] / aclocal.m4
index a851674..f2762b3 100644 (file)
@@ -4,6 +4,33 @@
 # ensure we don't clash with any pre-supplied autoconf ones.
 
 
+# FPTOOLS_FLOAT_WORD_ORDER_BIGENDIAN
+# ----------------------------------
+# Little endian Arm on Linux with some ABIs has big endian word order
+# in doubles. Define FLOAT_WORDS_BIGENDIAN if this is the case.
+AC_DEFUN([FPTOOLS_FLOAT_WORD_ORDER_BIGENDIAN],
+  [AC_CACHE_CHECK([whether float word order is big endian], [fptools_cv_float_word_order_bigendian],
+    [AC_COMPILE_IFELSE(
+      [AC_LANG_PROGRAM(
+        [#include <endian.h>],
+        [#if defined(__FLOAT_WORD_ORDER) && __FLOAT_WORD_ORDER == BIG_ENDIAN
+             return 0;
+         #else
+             not float word order big endian
+         #endif]
+      )],
+      [fptools_cv_float_word_order_bigendian=yes],
+      [fptools_cv_float_word_order_bigendian=no])
+    ])
+  case $fptools_cv_float_word_order_bigendian in
+      yes)
+          AC_DEFINE([FLOAT_WORDS_BIGENDIAN], 1,
+          [Define to 1 if your processor stores words of floats with
+           the most significant byte first]) ;;
+  esac
+])
+
+
 # FP_EVAL_STDERR(COMMAND)
 # -----------------------
 # Eval COMMAND, save its stderr (without lines resulting from shell tracing)
@@ -75,27 +102,6 @@ AC_SUBST(ContextDiffCmd, [$fp_cv_context_diff])
 ])# FP_PROG_CONTEXT_DIFF
 
 
-# FP_DECL_ALTZONE
-# ---------------
-# Defines HAVE_DECL_ALTZONE to 1 if declared, 0 otherwise.
-#
-# Used by base package.
-AC_DEFUN([FP_DECL_ALTZONE],
-[AC_REQUIRE([AC_HEADER_TIME])dnl
-AC_CHECK_HEADERS([sys/time.h])
-AC_CHECK_DECLS([altzone], [], [],[#if TIME_WITH_SYS_TIME
-# include <sys/time.h>
-# include <time.h>
-#else
-# if HAVE_SYS_TIME_H
-#  include <sys/time.h>
-# else
-#  include <time.h>
-# endif
-#endif])
-])# FP_DECL_ALTZONE
-
-
 # FP_COMPUTE_INT(EXPRESSION, VARIABLE, INCLUDES, IF-FAILS)
 # --------------------------------------------------------
 # Assign VARIABLE the value of the compile-time EXPRESSION using INCLUDES for
@@ -162,6 +168,10 @@ case $HostPlatform in
 alpha-dec-osf*) fptools_cv_leading_underscore=no;;
 *cygwin32) fptools_cv_leading_underscore=yes;;
 *mingw32) fptools_cv_leading_underscore=yes;;
+
+    # HACK: Apple doesn't seem to provide nlist in the 64-bit-libraries
+x86_64-apple-darwin*) fptools_cv_leading_underscore=yes;;
+
 *) AC_RUN_IFELSE([AC_LANG_SOURCE([[#ifdef HAVE_NLIST_H
 #include <nlist.h>
 struct nlist xYzzY1[] = {{"xYzzY1", 0},{0}};
@@ -245,26 +255,10 @@ dnl at least Happy version 1.14.  If there's no installed Happy, we look
 dnl for a happy source tree and point the build system at that instead.
 dnl
 AC_DEFUN([FPTOOLS_HAPPY],
-[
-if test -d $srcdir/happy; then
-   SrcTreeHappyCmd=$hardtop/happy/src/happy-inplace
-else
-   SrcTreeHappyCmd=""
-fi
-if test x"$UseSrcTreeHappy" = xYES; then
-  if test x"$SrcTreeHappyCmd" != x; then
-     HappyCmd=$SrcTreeHappyCmd
-  else
-     AC_MSG_ERROR([--enable-src-tree-happy given, but happy not found in source tree])
-  fi
-else
-  AC_PATH_PROG(HappyCmd,happy,$SrcTreeHappyCmd)
-fi
+[AC_PATH_PROG(HappyCmd,happy,)
 AC_CACHE_CHECK([for version of happy], fptools_cv_happy_version,
 changequote(, )dnl
-[if test x"$HappyCmd" = x"$SrcTreeHappyCmd" -a -e $srcdir/happy/mk/version.mk; then
-   fptools_cv_happy_version=`grep '^ProjectVersion[    ]*=' $srcdir/happy/mk/version.mk | sed 's/[^0-9]*\([0-9][0-9]*\.[0-9][0-9]*\).*/\1/g'`;
-elif test x"$HappyCmd" != x; then
+[if test x"$HappyCmd" != x; then
    fptools_cv_happy_version="`$HappyCmd -v |
                          grep 'Happy Version' | sed -e 's/Happy Version \([^ ]*\).*/\1/g'`" ;
 else
@@ -272,9 +266,10 @@ else
 fi;
 changequote([, ])dnl
 ])
-if test -d $srcdir/ghc -a ! -f $srcdir/ghc/compiler/parser/Parser.hs; then
-  FP_COMPARE_VERSIONS([$fptools_cv_happy_version],[-lt],[1.15],
-  [AC_MSG_ERROR([Happy version 1.15 or later is required to compile GHC.])])[]dnl
+if test ! -f compiler/parser/Parser.hs || test ! -f compiler/main/ParsePkgConf.hs || test ! -f compiler/cmm/CmmParse.hs || test ! -f compiler/parser/ParserCore.hs
+then
+    FP_COMPARE_VERSIONS([$fptools_cv_happy_version],[-lt],[1.15],
+      [AC_MSG_ERROR([Happy version 1.15 or later is required to compile GHC.])])[]dnl
 fi
 HappyVersion=$fptools_cv_happy_version;
 AC_SUBST(HappyVersion)
@@ -285,21 +280,7 @@ dnl Check for Haddock and version.  If there's no installed Haddock, we look
 dnl for a haddock source tree and point the build system at that instead.
 dnl
 AC_DEFUN([FPTOOLS_HADDOCK],
-[
-if test -d $srcdir/haddock; then
-   SrcTreeHaddockCmd=$hardtop/haddock/src/haddock-inplace
-else
-   SrcTreeHaddockCmd=""
-fi
-if test x"$UseSrcTreeHaddock" = xYES; then
-  if test x"$SrcTreeHaddockCmd" != x; then
-     HaddockCmd=$SrcTreeHaddockCmd
-  else
-     AC_MSG_ERROR([--enable-src-tree-haddock given, but haddock not found in source tree])
-  fi
-else
-  AC_PATH_PROG(HaddockCmd,haddock,$SrcTreeHaddockCmd)
-fi
+[AC_PATH_PROG(HaddockCmd,haddock,)
 dnl Darn, I forgot to make Haddock print out its version number when
 dnl invoked with -v.  We could try generating some HTML and grepping
 dnl through that to find the version number, but I think we'll make
@@ -308,30 +289,14 @@ dnl do without it for now.
 
 dnl
 dnl Check for Alex and version.  If we're building GHC, then we need
-dnl at least Alex version 2.0.  If there's no installed Alex, we look
-dnl for a alex source tree and point the build system at that instead.
+dnl at least Alex version 2.0.1.
 dnl
 AC_DEFUN([FPTOOLS_ALEX],
 [
-if test -d $srcdir/alex; then
-   SrcTreeAlexCmd=$hardtop/alex/src/alex-inplace
-else
-   SrcTreeAlexCmd=""
-fi
-if test x"$UseSrcTreeAlex" = xYES; then
-  if test x"$SrcTreeAlexCmd" != x; then
-     AlexCmd=$SrcTreeAlexCmd
-  else
-     AC_MSG_ERROR([--enable-src-tree-alex given, but alex not found in source tree])
-  fi
-else
-  AC_PATH_PROG(AlexCmd,alex,$SrcTreeAlexCmd)
-fi
+AC_PATH_PROG(AlexCmd,alex,)
 AC_CACHE_CHECK([for version of alex], fptools_cv_alex_version,
 changequote(, )dnl
-[if test x"$AlexCmd" = x"$SrcTreeAlexCmd"; then
-   fptools_cv_alex_version=`grep '^ProjectVersion[     ]*=' $srcdir/alex/mk/version.mk | sed 's/[^0-9]*\([0-9][0-9]*\.[0-9][0-9]*\).*/\1/g'`;
-elif test x"$AlexCmd" != x; then
+[if test x"$AlexCmd" != x; then
    fptools_cv_alex_version="`$AlexCmd -v |
                          grep 'Alex [Vv]ersion' | sed -e 's/Alex [Vv]ersion \([0-9\.]*\).*/\1/g'`" ;
 else
@@ -339,9 +304,10 @@ else
 fi;
 changequote([, ])dnl
 ])
-if test -d $srcdir/ghc -a ! -f $srcdir/ghc/compiler/parser/Lexer.hs; then
-  FP_COMPARE_VERSIONS([$fptools_cv_alex_version],[-lt],[2.0],
-  [AC_MSG_ERROR([Alex version 2.0 or later is required to compile GHC.])])[]dnl
+if test ! -f compiler/cmm/CmmLex.hs || test ! -f compiler/parser/Lexer.hs
+then
+    FP_COMPARE_VERSIONS([$fptools_cv_alex_version],[-lt],[2.0.1],
+      [AC_MSG_ERROR([Alex version 2.0.1 or later is required to compile GHC.])])[]dnl
 fi
 AlexVersion=$fptools_cv_alex_version;
 AC_SUBST(AlexVersion)
@@ -353,18 +319,30 @@ AC_SUBST(AlexVersion)
 # Sets the output variable LdCmd to the (non-Cygwin version of the) full path
 # of ld. Exits if no ld can be found
 AC_DEFUN([FP_PROG_LD],
-[AC_PATH_PROG([fp_prog_ld_raw], [ld])
-if test -z "$fp_prog_ld_raw"; then
-  AC_MSG_ERROR([cannot find ld in your PATH, no idea how to link])
+[
+if test -z "$1"
+then
+  AC_PATH_PROG([fp_prog_ld_raw], [ld])
+  if test -z "$fp_prog_ld_raw"; then
+    AC_MSG_ERROR([cannot find ld in your PATH, no idea how to link])
+  fi
+  LdCmd=$fp_prog_ld_raw
+  case $HostPlatform in
+    *mingw32) if test x${OSTYPE} != xmsys; then
+             LdCmd="`cygpath -w ${fp_prog_ld_raw} | sed -e 's@\\\\@/@g'`"
+                AC_MSG_NOTICE([normalized ld command to $LdCmd])
+              fi
+           # Insist on >= ld-2.15.x, since earlier versions doesn't handle
+           # the generation of relocatable object files with large amounts
+           # of relocations correctly. (cf. HSbase.o splittage-hack)
+           fp_prog_ld_version=`${LdCmd} --version | sed -n '/GNU ld/p' | tr -cd 0-9 | cut -b1-3`
+           FP_COMPARE_VERSIONS([$fp_prog_ld_version],[-lt],[214],
+                                  [AC_MSG_ERROR([GNU ld version later than 2.14 required to compile GHC on Windows.])])[]dnl
+              ;;
+  esac
+else
+  LdCmd="$1"
 fi
-LdCmd=$fp_prog_ld_raw
-case $HostPlatform in
-  *mingw32) if test x${OSTYPE} != xmsys; then
-             LdCmd="`cygpath -w ${fp_prog_ld_raw} | sed -e 's@\\\\@/@g'`"
-              AC_MSG_NOTICE([normalized ld command to $LdCmd])
-            fi
-            ;;
-esac
 AC_SUBST([LdCmd])
 ])# FP_PROG_LD
 
@@ -488,7 +466,7 @@ AC_REQUIRE([AC_PROG_CC])
 AC_CACHE_CHECK([whether ranlib is needed], [fp_cv_prog_ar_needs_ranlib],
 [if test $fp_prog_ar_is_gnu = yes; then
   fp_cv_prog_ar_needs_ranlib=no
-elif test $TargetPlatform = powerpc-apple-darwin; then
+elif echo $TargetPlatform | grep "^.*-apple-darwin$"  > /dev/null 2> /dev/null; then
   # It's quite tedious to check for Apple's crazy timestamps in .a files,
   # so we hardcode it.
   fp_cv_prog_ar_needs_ranlib=yes
@@ -633,6 +611,15 @@ echo foo > conftest.txt
 $fp_prog_find conftest.txt -print > conftest.out 2>&1
 if grep '^conftest.txt$' conftest.out > /dev/null 2>&1 ; then
   # OK, looks like a real "find".
+  case $HostPlatform in
+    *mingw32)
+      if test x${OSTYPE} != xmsys
+      then
+           fp_prog_find="`cygpath --mixed ${fp_prog_find}`"
+        AC_MSG_NOTICE([normalized find command to $fp_prog_find])
+      fi ;;
+    *) ;;
+  esac
   FindCmd="$fp_prog_find"
 else
   # Found a poor WinDoze version of "find", ignore it.
@@ -726,110 +713,6 @@ ifelse($#, [1], [dnl
 ])dnl
 
 
-dnl ** Map an arithmetic C type to a Haskell type.
-dnl    Based on autconf's AC_CHECK_SIZEOF.
-
-dnl FPTOOLS_CHECK_HTYPE(TYPE [, DEFAULT_VALUE, [, VALUE-FOR-CROSS-COMPILATION])
-AC_DEFUN([FPTOOLS_CHECK_HTYPE],
-[changequote(<<, >>)dnl
-dnl The name to #define.
-define(<<AC_TYPE_NAME>>, translit(htype_$1, [a-z *], [A-Z_P]))dnl
-dnl The cache variable name.
-define(<<AC_CV_NAME>>, translit(fptools_cv_htype_$1, [ *], [_p]))dnl
-define(<<AC_CV_NAME_supported>>, translit(fptools_cv_htype_sup_$1, [ *], [_p]))dnl
-changequote([, ])dnl
-AC_MSG_CHECKING(Haskell type for $1)
-AC_CACHE_VAL(AC_CV_NAME,
-[AC_CV_NAME_supported=yes
-fp_check_htype_save_cppflags="$CPPFLAGS"
-CPPFLAGS="$CPPFLAGS $X_CFLAGS"
-AC_RUN_IFELSE([AC_LANG_SOURCE([[#include <stdio.h>
-#include <stddef.h>
-
-#if HAVE_SYS_TYPES_H
-# include <sys/types.h>
-#endif
-
-#if HAVE_UNISTD_H
-# include <unistd.h>
-#endif
-
-#if HAVE_SYS_STAT_H
-# include <sys/stat.h>
-#endif
-
-#if HAVE_FCNTL_H
-# include <fcntl.h>
-#endif
-
-#if HAVE_SIGNAL_H
-# include <signal.h>
-#endif
-
-#if HAVE_TIME_H
-# include <time.h>
-#endif
-
-#if HAVE_TERMIOS_H
-# include <termios.h>
-#endif
-
-#if HAVE_STRING_H
-# include <string.h>
-#endif
-
-#if HAVE_CTYPE_H
-# include <ctype.h>
-#endif
-
-#if defined(HAVE_GL_GL_H)
-# include <GL/gl.h>
-#elif defined(HAVE_OPENGL_GL_H)
-# include <OpenGL/gl.h>
-#endif
-
-#if defined(HAVE_AL_ALC_H)
-# include <AL/alc.h>
-#elif defined(HAVE_OPENAL_ALC_H)
-# include <OpenAL/alc.h>
-#endif
-
-#if HAVE_SYS_RESOURCE_H
-# include <sys/resource.h>
-#endif
-
-typedef $1 testing;
-
-main() {
-  FILE *f=fopen("conftestval", "w");
-  if (!f) exit(1);
-  if (((testing)((int)((testing)1.4))) == ((testing)1.4)) {
-    fprintf(f, "%s%d\n",
-           ((testing)(-1) < (testing)0) ? "Int" : "Word",
-           sizeof(testing)*8);
-  } else {
-    fprintf(f,"%s\n",
-           (sizeof(testing) >  sizeof(double)) ? "LDouble" :
-           (sizeof(testing) == sizeof(double)) ? "Double"  : "Float");
-  }
-  fclose(f);
-  exit(0);
-}]])],[AC_CV_NAME=`cat conftestval`],
-[ifelse([$2], , [AC_CV_NAME=NotReallyAType; AC_CV_NAME_supported=no], [AC_CV_NAME=$2])],
-[ifelse([$3], , [AC_CV_NAME=NotReallyATypeCross; AC_CV_NAME_supported=no], [AC_CV_NAME=$3])])]) dnl
-CPPFLAGS="$fp_check_htype_save_cppflags"
-if test "$AC_CV_NAME_supported" = yes; then
-  AC_MSG_RESULT($AC_CV_NAME)
-  AC_DEFINE_UNQUOTED(AC_TYPE_NAME, $AC_CV_NAME, [Define to Haskell type for $1])
-else
-  AC_MSG_RESULT([not supported])
-fi
-undefine([AC_TYPE_NAME])dnl
-undefine([AC_CV_NAME])dnl
-undefine([AC_CV_NAME_supported])dnl
-])
-
-
 # FP_CHECK_FUNC(FUNCTION, PROLOGUE, BODY, [ACTION-IF-FOUND], [ACTION-IF-NOT-FOUND])
 # ---------------------------------------------------------------------------------
 # A variant of AC_CHECK_FUNCS, limited to a single FUNCTION, but with the
@@ -975,7 +858,7 @@ EOF
 # 'PATH'. Note that /usr/bin/fop is broken in SuSE 9.1 (unpatched), so try
 # /usr/share/fop/fop.sh in that case (or no 'fop'), too.
 AC_DEFUN([FP_PROG_FOP],
-[AC_PATH_PROGS([FopCmd1], [fop])
+[AC_PATH_PROGS([FopCmd1], [fop fop.sh])
 if test -n "$FopCmd1"; then
   AC_CACHE_CHECK([for $FopCmd1 usability], [fp_cv_fop_usability],
     [FP_GEN_FO
@@ -1043,4 +926,239 @@ else
   GhcPkgCmd=$fp_cv_matching_ghc_pkg
 fi])# FP_PROG_GHC_PKG
 
+
+# FP_GHC_HAS_READLINE
+# -------------------
+AC_DEFUN([FP_GHC_HAS_READLINE],
+[AC_REQUIRE([FP_PROG_GHC_PKG])
+AC_CACHE_CHECK([whether ghc has readline package], [fp_cv_ghc_has_readline],
+[if "${GhcPkgCmd-ghc-pkg}" --show-package readline >/dev/null 2>&1; then
+  fp_cv_ghc_has_readline=yes
+else
+  fp_cv_ghc_has_readline=no
+ fi])
+AC_SUBST([GhcHasReadline], [`echo $fp_cv_ghc_has_readline | sed 'y/yesno/YESNO/'`])
+])# FP_GHC_HAS_READLINE
+
+
+# FP_GCC_NEEDS_NO_OMIT_LFPTR
+# --------------------------
+# Some OSs (Mandrake Linux, in particular) configure GCC with
+# -momit-leaf-frame-pointer on by default. If this is the case, we need to turn
+# it off for mangling to work. The test is currently a bit crude, using only the
+# version number of gcc. Defines HAVE_GCC_MNO_OMIT_LFPTR.
+AC_DEFUN([FP_GCC_NEEDS_NO_OMIT_LFPTR],
+[AC_REQUIRE([FP_HAVE_GCC])
+AC_CACHE_CHECK([whether gcc needs -mno-omit-leaf-frame-pointer], [fp_cv_gcc_needs_no_omit_lfptr],
+[FP_COMPARE_VERSIONS([$fp_gcc_version], [-ge], [3.2],
+  [fp_cv_gcc_needs_no_omit_lfptr=yes],
+  [fp_cv_gcc_needs_no_omit_lfptr=no])])
+if test "$fp_cv_gcc_needs_no_omit_lfptr" = "yes"; then
+   AC_DEFINE([HAVE_GCC_MNO_OMIT_LFPTR], [1], [Define to 1 if gcc supports -mno-omit-leaf-frame-pointer.])
+fi])# FP_GCC_NEEDS_NO_OMIT_LFPTR
+
+# FP_GCC_HAS_NO_UNIT_AT_A_TIME
+# --------------------------
+AC_DEFUN([FP_GCC_HAS_NO_UNIT_AT_A_TIME],
+[AC_REQUIRE([FP_HAVE_GCC])
+AC_CACHE_CHECK([whether gcc has -fno-unit-at-a-time], [fp_cv_gcc_has_no_unit_at_a_time],
+[FP_COMPARE_VERSIONS([$fp_gcc_version], [-ge], [3.4],
+  [fp_cv_gcc_has_no_unit_at_a_time=yes],
+  [fp_cv_gcc_has_no_unit_at_a_time=no])])
+if test "$fp_cv_gcc_has_no_unit_at_a_time" = "yes"; then
+   AC_DEFINE([HAVE_GCC_HAS_NO_UNIT_AT_A_TIME], [1], [Define to 1 if gcc supports -fno-unit-at-a-time.])
+fi])
+
+# FP_GCC_HAS_WRAPV
+# --------------------------
+AC_DEFUN([FP_GCC_HAS_WRAPV],
+[AC_REQUIRE([FP_HAVE_GCC])
+AC_CACHE_CHECK([whether gcc has -fwrapv], [fp_cv_gcc_has_wrapv],
+[FP_COMPARE_VERSIONS([$fp_gcc_version], [-ge], [3.4],
+  [fp_cv_gcc_has_wrapv=yes],
+  [fp_cv_gcc_has_wrapv=no])])
+if test "$fp_cv_gcc_has_wrapv" = "yes"; then
+   AC_DEFINE([HAVE_GCC_HAS_WRAPV], [1], [Define to 1 if gcc supports -fwrapv.])
+fi])
+
+# FP_SETUP_PROJECT_VERSION
+# ---------------------
+AC_DEFUN([FP_SETUP_PROJECT_VERSION],
+[
+if test "$RELEASE" = "NO"; then
+    AC_MSG_CHECKING([for GHC version date])
+    if test -f VERSION_DATE; then
+        PACKAGE_VERSION=${PACKAGE_VERSION}.`cat VERSION_DATE`
+        AC_MSG_RESULT(given $PACKAGE_VERSION)
+    elif test -d _darcs; then
+        changequote(, )dnl
+        ver_date=`darcs changes --quiet --no-summary --xml | head -500 | grep 'date=' | sed "s/^.*date='\([0-9][0-9][0-9][0-9][0-9][0-9][0-9][0-9]\).*$/\1/g" | sort -n | tail -1`
+        if echo $ver_date | grep '^[0-9][0-9][0-9][0-9][0-9][0-9][0-9][0-9]$' 2>&1 >/dev/null; then true; else
+        changequote([, ])dnl
+                AC_MSG_ERROR([failed to detect version date: check that darcs is in your path])
+        fi
+        PACKAGE_VERSION=${PACKAGE_VERSION}.$ver_date
+        AC_MSG_RESULT(inferred $PACKAGE_VERSION)
+    elif test -f VERSION; then
+        PACKAGE_VERSION=`cat VERSION`
+        AC_MSG_RESULT(given $PACKAGE_VERSION)
+    else
+        AC_MSG_WARN([cannot determine snapshot version: no _darcs directory and no VERSION file])
+    fi
+fi
+
+# Some renamings
+AC_SUBST([ProjectName], [$PACKAGE_NAME])
+AC_SUBST([ProjectVersion], [$PACKAGE_VERSION])
+
+# Split PACKAGE_VERSION into (possibly empty) parts
+VERSION_MAJOR=`echo $PACKAGE_VERSION | sed 's/^\(@<:@^.@:>@*\)\(\.\{0,1\}\(.*\)\)$/\1'/`
+VERSION_TMP=`echo $PACKAGE_VERSION | sed 's/^\(@<:@^.@:>@*\)\(\.\{0,1\}\(.*\)\)$/\3'/`
+VERSION_MINOR=`echo $VERSION_TMP | sed 's/^\(@<:@^.@:>@*\)\(\.\{0,1\}\(.*\)\)$/\1'/`
+ProjectPatchLevel=`echo $VERSION_TMP | sed 's/^\(@<:@^.@:>@*\)\(\.\{0,1\}\(.*\)\)$/\3'/`
+
+# Calculate project version as an integer, using 2 digits for minor version
+case $VERSION_MINOR in
+  ?) ProjectVersionInt=${VERSION_MAJOR}0${VERSION_MINOR} ;;
+  ??) ProjectVersionInt=${VERSION_MAJOR}${VERSION_MINOR} ;;
+  *) AC_MSG_ERROR([bad minor version in $PACKAGE_VERSION]) ;;
+esac
+AC_SUBST([ProjectVersionInt])
+
+# The project patchlevel is zero unless stated otherwise
+test -z "$ProjectPatchLevel" && ProjectPatchLevel=0
+
+# Remove dots from the patch level; this allows us to have versions like 6.4.1.20050508
+ProjectPatchLevel=`echo $ProjectPatchLevel | sed 's/\.//'`
+
+AC_SUBST([ProjectPatchLevel])
+])# FP_SETUP_PROJECT_VERSION
+
+AC_DEFUN([FP_CHECK_TIMER_CREATE],
+  [AC_CACHE_CHECK([for a working timer_create(CLOCK_REALTIME)], 
+    [fptools_cv_timer_create_works],
+    [AC_TRY_RUN([
+#ifdef HAVE_TIME_H
+#include <time.h>
+#endif
+#ifdef HAVE_SIGNAL_H
+#include <signal.h>
+#endif
+#ifdef HAVE_UNISTD_H
+#include <unistd.h>
+#endif
+int main(int argc, char *argv[])
+{
+#if HAVE_TIMER_CREATE && HAVE_TIMER_SETTIME
+    struct sigevent ev;
+    timer_t timer;
+    ev.sigev_notify = SIGEV_SIGNAL;
+    ev.sigev_signo  = SIGVTALRM;
+    if (timer_create(CLOCK_PROCESS_CPUTIME_ID, &ev, &timer) != 0) {
+       exit(1);
+    }
+#else
+    exit(1)
+#endif
+    exit(0);
+}
+     ],
+     [fptools_cv_timer_create_works=yes],
+     [fptools_cv_timer_create_works=no])
+  ])
+case $fptools_cv_timer_create_works in
+    yes) AC_DEFINE([USE_TIMER_CREATE], 1, 
+                   [Define to 1 if we can use timer_create(CLOCK_PROCESS_CPUTIME_ID,...)]);;
+esac
+])
+
+# FP_ARG_GMP
+# -------------
+AC_DEFUN([FP_ARG_GMP],
+[
+AC_ARG_WITH([gmp-includes],
+  [AC_HELP_STRING([--with-gmp-includes],
+    [directory containing gmp.h])],
+    [gmp_includes=$withval],
+    [gmp_includes=NONE])
+
+AC_ARG_WITH([gmp-libraries],
+  [AC_HELP_STRING([--with-gmp-libraries],
+    [directory containing gmp library])],
+    [gmp_libraries=$withval],
+    [gmp_libraries=NONE])
+])# FP_ARG_GMP
+
+AC_DEFUN([CHECK_GMP],
+[AC_REQUIRE([AC_PROG_CPP])
+AC_REQUIRE([AC_PROG_CC])
+])
+
+# --------------------------------------------------------------
+# Calculate absolute path to build tree
+# --------------------------------------------------------------
+
+AC_DEFUN([FP_FIND_ROOT],[
+AC_MSG_CHECKING(for path to top of build tree)
+
+hardtop=`pwd`
+
+dnl Remove common automounter nonsense
+dnl
+hardtop=`echo $hardtop | sed 's|^/tmp_mnt.*\(/local/.*\)$|\1|' | sed 's|^/tmp_mnt/|/|' | sed 's|^//\(.\)/|\1:/|' `
+
+dnl Find 'hardtop_plat', the native format for 'hardtop'
+dnl (i.e., right kind of \dnl slashes on a Win32 box, but with b-slashes
+dnl being escaped).
+dnl
+dnl Note OSTYPE: On Cygwin we need to use 'cygpath' to convert
+dnl              /cygdrive/c/foo to c:/foo but we must not do that if we
+dnl              aren't building using Cygwin (notably msys), because
+dnl              cygpath doesn't exist.  It seems that 'bash' sets
+dnl              OSTYPE to 'cygwin' or 'msys' respectively, but cygwin's
+dnl              'sh' does not.  So we hackily assume that if the shell
+dnl              hasn't set it to 'msys' then we must be in Cygwin.
+dnl              Sigh.
+dnl
+dnl              The Right Thing is probably to test $BuildPlatform
+dnl              instead, but we are sloppy about setting that correctly
+dnl              at the moment, so we just work around for now.
+dnl
+dnl              The quotes round "$(OSTYPE)" are essential, for the
+dnl              Cygwin-sh case where OSTYPE is not set.
+case $HostPlatform in
+  i386-unknown-mingw32 | i386-unknown-cygwin32)
+        if test "${OSTYPE}" != "msys"
+          then
+            # convert $hardtop to a path that mingw will understand too
+            cyghardtop=${hardtop}
+            hardtop=`cygpath -w ${cyghardtop} | sed -e 's@\\\\@/@g'`
+            hardtop_plat=`cygpath -w ${cyghardtop} | sed -e 's@\\\\@\\\\\\\\@g'`
+          else
+dnl OK, so we're in the MSYS case.  hardtop looks like /c/....
+dnl We want to make hardtop_plat into c:/...
+dnl Stop using [] for quotes temporarily, so we can use [] in the sed regexp
+changequote(, )dnl
+               hardtop_plat=`echo ${hardtop} | sed -e 's@^/\\([a-zA-Z]\\)/@\\1:/@g'`
+changequote([, ])dnl
+        fi
+        ;;
+  *)
+        hardtop_plat=${hardtop}
+        ;;
+esac
+AC_SUBST(hardtop)
+AC_SUBST(hardtop_plat)
+
+AC_MSG_RESULT(${hardtop})
+
+# We don't support building in directories with spaces.
+case "$hardtop" in
+  *' '*) AC_MSG_ERROR([
+   The build system does not support building in a directory containing
+   space characters.  Suggestion: move the build tree somewhere else.])
+ ;;
+esac
+])
+
 # LocalWords:  fi