X-Git-Url: http://git.megacz.com/?a=blobdiff_plain;f=configure.ac;h=afe7a05b169a2fc5cce684997ce76fc156336203;hb=843b4bb61822eab5c3649da61c3417d0ec6caf52;hp=5bf773b6c00c37c0c453cca609c0875e06edc9ce;hpb=f0e3d7904df76f35676e105ed63e7b4eb961773a;p=ghc-hetmet.git

diff --git a/configure.ac b/configure.ac
index 5bf773b..afe7a05 100644
--- a/configure.ac
+++ b/configure.ac
@@ -346,6 +346,16 @@ checkArch "$TargetArch"
 checkVendor "$TargetVendor"
 checkOS "$TargetOS"
 
+# Verify that the installed (bootstrap) GHC is capable of generating
+# code for the requested build platform.
+if test "$build" != "$bootstrap_target"
+then
+    echo "This GHC (${WithGhc}) does not generate code for the build platform"
+    echo "   GHC target platform    : $bootstrap_target"
+    echo "   Desired build platform : $BuildPlatform"
+    exit 1
+fi
+
 AC_SUBST(BuildPlatform)
 AC_SUBST(HostPlatform)
 AC_SUBST(TargetPlatform)
@@ -389,6 +399,9 @@ then
     LD="$hardtop/inplace/mingw/bin/ld.exe"
     NM="$hardtop/inplace/mingw/bin/nm.exe"
     fp_prog_ar_raw="$hardtop/inplace/mingw/bin/ar.exe"
+
+    # NB. If you update the tarbballs to a new version of gcc, don't
+    # forget to tweak the paths in driver/gcc/gcc.c.
     if ! test -d inplace/mingw ||
          test inplace/mingw -ot ghc-tarballs/mingw/binutils*.tar.lzma  ||
          test inplace/mingw -ot ghc-tarballs/mingw/gcc-core*.tar.lzma  ||