iOS: generate archive files when compiling.

When cross compiling to iOS, we generate archive files which are linked
into the final executable. We already *did* generate archive files -
just with the wrong suffix.

Fixes #8125.

Authored-by: Stephen Blackheath <...@blacksapphire.com>
Signed-off-by: Austin Seipp <aseipp@pobox.com>

3 files changed, 45 insertions, 27 deletions

diff --git a/aclocal.m4 b/aclocal.m4
index 0852dbf90d..d604cc08e0 100644
--- a/aclocal.m4
+++ b/aclocal.m4
@@ -4,6 +4,34 @@
 # ensure we don't clash with any pre-supplied autoconf ones.
 
 
+AC_DEFUN([GHC_SELECT_FILE_EXTENSIONS],
+[
+    $2=''
+    $3='.so'
+    case $1 in
+    *-unknown-cygwin32)
+        AC_MSG_WARN([GHC does not support the Cygwin target at the moment])
+        AC_MSG_WARN([I'm assuming you wanted to build for i386-unknown-mingw32])
+        exit 1
+        ;;
+    *-unknown-mingw32)
+        windows=YES
+        $2='.exe'
+        $3='.dll'
+        ;;
+    i386-apple-darwin|powerpc-apple-darwin)
+        $3='.dylib'
+        ;;
+    x86_64-apple-darwin)
+        $3='.dylib'
+        ;;
+    arm-apple-darwin10)
+        $2='.a'
+        $3='.dylib'
+        ;;
+    esac
+])
+
 # FPTOOLS_SET_PLATFORM_VARS
 # ----------------------------------
 # Set the platform variables
@@ -86,25 +114,12 @@ AC_DEFUN([FPTOOLS_SET_PLATFORM_VARS],
         GHC_CONVERT_OS([$target_os], [$TargetArch], [TargetOS])
     fi
 
+    GHC_SELECT_FILE_EXTENSIONS([$host], [exeext_host], [soext_host])
+    GHC_SELECT_FILE_EXTENSIONS([$target], [exeext_target], [soext_target])
     windows=NO
-    exeext=''
-    soext='.so'
     case $host in
-    *-unknown-cygwin32)
-        AC_MSG_WARN([GHC does not support the Cygwin target at the moment])
-        AC_MSG_WARN([I'm assuming you wanted to build for i386-unknown-mingw32])
-        exit 1
-        ;;
     *-unknown-mingw32)
         windows=YES
-        exeext='.exe'
-        soext='.dll'
-        ;;
-    i386-apple-darwin|powerpc-apple-darwin)
-        soext='.dylib'
-        ;;
-    x86_64-apple-darwin)
-        soext='.dylib'
         ;;
     esac
 
@@ -149,8 +164,10 @@ AC_DEFUN([FPTOOLS_SET_PLATFORM_VARS],
     AC_SUBST(BuildVendor_CPP)
     AC_SUBST(TargetVendor_CPP)
 
-    AC_SUBST(exeext)
-    AC_SUBST(soext)
+    AC_SUBST(exeext_host)
+    AC_SUBST(exeext_target)
+    AC_SUBST(soext_host)
+    AC_SUBST(soext_target)
 ])
 
 
diff --git a/compiler/main/DriverPipeline.hs b/compiler/main/DriverPipeline.hs
index aa49e70eb7..c5bcdc7a65 100644
--- a/compiler/main/DriverPipeline.hs
+++ b/compiler/main/DriverPipeline.hs
@@ -1938,15 +1938,16 @@ linkBinary dflags o_files dep_packages = do
 exeFileName :: DynFlags -> FilePath
 exeFileName dflags
   | Just s <- outputFile dflags =
-      if platformOS (targetPlatform dflags) == OSMinGW32
-      then if null (takeExtension s)
-           then s <.> "exe"
-           else s
-      else s
+      case platformOS (targetPlatform dflags) of 
+          OSMinGW32 -> s <?.> "exe"
+          OSiOS     -> s <?.> "a"
+          _         -> s
   | otherwise =
       if platformOS (targetPlatform dflags) == OSMinGW32
       then "main.exe"
       else "a.out"
+ where s <?.> ext | null (takeExtension s) = s <.> ext
+                  | otherwise              = s
 
 maybeCreateManifest
    :: DynFlags
diff --git a/mk/project.mk.in b/mk/project.mk.in
index 7b25368b38..28692d4cbb 100644
--- a/mk/project.mk.in
+++ b/mk/project.mk.in
@@ -125,11 +125,11 @@ BuildVendor_CPP                 = @BuildVendor_CPP@
 LeadingUnderscore=@LeadingUnderscore@
 
 # Pin a suffix on executables? If so, what (Windows only).
-exeext0=@exeext@
-exeext1=@exeext@
-exeext2=@exeext@
-exeext3=@exeext@
-soext=@soext@
+exeext0=@exeext_host@
+exeext1=@exeext_target@
+exeext2=@exeext_target@
+exeext3=@exeext_target@
+soext=@soext_target@
 
 # Windows_Host=YES if on a Windows platform
 ifneq "$(findstring $(HostOS_CPP), mingw32 cygwin32)" ""