[project @ 2001-05-09 09:55:41 by simonmar]

[ghc-hetmet.git] / aclocal.m4

diff --git a/aclocal.m4 b/aclocal.m4
index 78acbcb..b727f16 100644 (file)
--- a/aclocal.m4
+++ b/aclocal.m4
@@ -1,4 +1,4 @@
-dnl $Id: aclocal.m4,v 1.65 2001/01/18 12:27:42 sewardj Exp $
+dnl $Id: aclocal.m4,v 1.71 2001/04/20 10:56:12 michaelw Exp $
 dnl 
 dnl Extra autoconf macros for the Glasgow fptools
 dnl
@@ -153,36 +153,65 @@ esac
 ])
 
 dnl
+dnl FPTOOLS_PROG_CHECK_VERSION(VERSIONSTR1, TEST, VERSIONSTR2,
+dnl                            ACTION-IF-TRUE [, ACTION-IF-FALSE])
+dnl
+dnl compare versions field-wise (separator is '.')
+dnl TEST is one of {-lt,-le,-eq,-ge,-gt}
+dnl
+dnl quite shell-independant and SUSv2 compliant code
+dnl
+dnl NOTE: the loop could be unrolled within autoconf, but the
+dnl       macro code would be a) longer and b) harder to debug... ;)
+dnl
+AC_DEFUN(FPTOOLS_PROG_CHECK_VERSION,
+[if ( IFS=".";
+      a="[$1]";  b="[$3]";
+      while test -n "$a$b"
+      do
+              set -- [$]a;  h1="[$]1";  shift 2>/dev/null;  a="[$]*"
+              set -- [$]b;  h2="[$]1";  shift 2>/dev/null;  b="[$]*"
+              test -n "[$]h1" || h1=0;  test -n "[$]h2" || h2=0
+              test [$]{h1} -eq [$]{h2} || break
+      done
+      test [$]{h1} [$2] [$]{h2}
+    )
+then ifelse([$4],,[:],[
+  $4])
+ifelse([$5],,,
+[else
+  $5])
+fi
+])])dnl
+
+
+dnl
 dnl Check for Happy and version.  If we're building GHC, then we need
 dnl at least Happy version 1.9.  If there's no installed Happy, we look
 dnl for a happy source tree and point the build system at that instead.
 dnl
-dnl ToDo: when we reset HappyCmd to the source tree, autoconf doesn't
-dnl seems to insert it in the cache file.  sigh.
-dnl
 AC_DEFUN(FPTOOLS_HAPPY,
-[AC_PATH_PROG(HappyCmd,happy)
+[
+if test -d $srcdir/happy; then
+   SrcTreeHappyCmd=$hardtop/happy/src/happy-inplace
+fi
+AC_PATH_PROG(HappyCmd,happy,$SrcTreeHappyCmd)
 AC_CACHE_CHECK([for version of happy], fptools_cv_happy_version,
-[if test x"$HappyCmd" != x; then
-   fptools_cv_happy_version="`$HappyCmd -v |
 changequote(, )dnl
-                         grep 'Happy Version' | sed -e 's/Happy Version \([^ ]*\).*/\1/g'`" ;
-elif test -d $srcdir/happy; then
-   HappyCmd=$hardtop/happy/src/happy-inplace;
+[if test x"$HappyCmd" = x"$SrcTreeHappyCmd"; then
    fptools_cv_happy_version=`grep '^ProjectVersion[    ]*=' $srcdir/happy/mk/version.mk | sed 's/.*\([0-9][0-9]*\.[0-9][0-9]*\).*/\1/g'`;
-   echo -n "using happy from the source tree... ";
+elif test x"$HappyCmd" != x; then
+   fptools_cv_happy_version="`$HappyCmd -v |
+                         grep 'Happy Version' | sed -e 's/Happy Version \([^ ]*\).*/\1/g'`" ;
 else
    fptools_cv_happy_version="";
 fi;
 changequote([, ])dnl
-if expr "$fptools_cv_happy_version" "<" 1.9 > /dev/null 2>&1; then
-   if test -d $srcdir/ghc; then
-     echo
-     echo "Happy version 1.9 or later is required to compile GHC."
-     exit 1;
-   fi
-fi;
 ])
+if test -d $srcdir/ghc; then
+  FPTOOLS_PROG_CHECK_VERSION([$fptools_cv_happy_version],-lt,[1.9],
+  [AC_MSG_ERROR([Happy version 1.9 or later is required to compile GHC.])])dnl
+fi
 HappyVersion=$fptools_cv_happy_version;
 AC_SUBST(HappyVersion)
 ])
@@ -860,7 +889,7 @@ dnl The variable LIBM (which is not an output variable by default) is
 dnl set to a value which is suitable for use in a Makefile (for example,
 dnl in make's LOADLIBES macro) provided you AC_SUBST it first.
 dnl
-dnl @version 0.01 $Id: aclocal.m4,v 1.65 2001/01/18 12:27:42 sewardj Exp $
+dnl @version 0.01 $Id: aclocal.m4,v 1.71 2001/04/20 10:56:12 michaelw Exp $
 dnl @author Matthew D. Langston <langston@SLAC.Stanford.EDU>
 
 # FPTOOLS_CHECK_LIBM - check for math library
@@ -868,7 +897,7 @@ AC_DEFUN(FPTOOLS_CHECK_LIBM,
 [AC_REQUIRE([AC_CANONICAL_HOST])dnl
 LIBM=
 case "$host" in
-*-*-beos* | *-*-cygwin*)
+*-*-beos* | *-*-macosx*)
   # These system don't have libm
   ;;
 *-ncr-sysv4.3*)
@@ -948,7 +977,7 @@ dnl Please note that as the ac_opengl macro and the toy example evolves,
 dnl the version number increases, so you may have to adjust the above
 dnl URL accordingly.
 dnl
-dnl @version 0.01 $Id: aclocal.m4,v 1.65 2001/01/18 12:27:42 sewardj Exp $
+dnl @version 0.01 $Id: aclocal.m4,v 1.71 2001/04/20 10:56:12 michaelw Exp $
 dnl @author Matthew D. Langston <langston@SLAC.Stanford.EDU>
 
 AC_DEFUN(FPTOOLS_HAVE_OPENGL,