[project @ 1998-02-09 12:33:25 by simonm]

[ghc-hetmet.git] / aclocal.m4

diff --git a/aclocal.m4 b/aclocal.m4
index 08f6931..3ecbc1f 100644 (file)
--- a/aclocal.m4
+++ b/aclocal.m4
@@ -62,9 +62,12 @@ AC_CACHE_CHECK([leading underscore in symbol names], ac_cv_lead_uscore,
 # Hack!: nlist() under Digital UNIX insist on there being an _,
 # but symbol table listings show none. What is going on here?!?
 #
-if test $HostPlatform = "alpha-dec-osf1"; then
-   ac_cv_lead_uscore='no'
-else
+changequote(<<, >>)dnl
+<<
+case $HostPlatform in
+alpha-dec-osf*) ac_cv_lead_uscore='no';;
+*) >>
+changequote([, ])dnl
 AC_TRY_RUN([#ifdef HAVE_NLIST_H
 #include <nlist.h>
 changequote(<<, >>)dnl
@@ -83,7 +86,8 @@ changequote([, ])dnl
 #endif
     exit(1);
 }], ac_cv_lead_uscore=yes, ac_cv_lead_uscore=no, ac_cv_lead_uscore=NO)
-fi);
+;;
+esac);
 LeadingUnderscore=`echo $ac_cv_lead_uscore | sed 'y/yesno/YESNO/'`
 AC_SUBST(LeadingUnderscore)
 ])
@@ -109,6 +113,12 @@ if expr "$ac_cv_happy_version" "<" 1.4 > /dev/null 2>&1; then
 fi;
 ])
 HappyVersion=$ac_cv_happy_version;
+if test x"$HappyCmd" != x && expr "$HappyVersion" \<= "1.3" >/dev/null; then
+       echo "   Happy Version 1.3 or later is required to compile GHC."
+       echo "   Using the Happy sources in the tree.";
+       HappyCmd=""
+       AC_SUBST(HappyCmd)
+fi;
 AC_SUBST(HappyVersion)
 ])
 
@@ -269,8 +279,8 @@ AC_DEFUN(AC_PROG_GNUCPP,
 [if test "$HaveGcc" = "YES"; then
        echo > conftest.c
        gcc -v -E conftest.c >/dev/null 2>conftest.out
-       echo '/(\S+(\/|\\)cpp)/ && print "[$]1";' > conftest.pl
-       ac_cv_gnu_cpp="`eval $PerlCmd -n conftest.pl conftest.out | tr '\\\' / `"
+       echo 'tr/\\/\//; /(\S+\/cpp)/ && print "[$]1";' > conftest.pl
+       ac_cv_gnu_cpp="`eval $PerlCmd -n conftest.pl conftest.out`"
        rm -fr conftest*
  else
        # We need to be able to invoke CPP directly, preferably