Add configure option --with-macos-deployment-target

[ghc-hetmet.git] / configure.ac

diff --git a/configure.ac b/configure.ac
index 9175078..cab4f19 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -819,6 +819,23 @@ AC_ARG_ENABLE(dotnet,
 )
 AC_SUBST(DotnetSupport)
 
+dnl ** Mac OS X: explicit deployment target
+dnl --------------------------------------------------------------
+AC_ARG_WITH([macos-deployment-target],
+[AC_HELP_STRING([--macos-deployment-target=VERSION],
+        [Build for Mac OS VERSION and higher  [default= version of build host]])],
+[MACOS_DEPLOYMENT_TARGET="$withval"
+ if test "x$TargetOS_CPP-$TargetVendor_CPP" != "xdarwin-apple"; then
+   # ignore everywhere, but on Mac OS
+   AC_MSG_WARN([--macos-deployment-target is only available on Mac OS X])
+   MACOS_DEPLOYMENT_TARGET=none
+ fi],
+[MACOS_DEPLOYMENT_TARGET=none]
+)
+FP_MACOS_DEPLOYMENT_TARGET
+AC_SUBST(MACOS_DEPLOYMENT_VERSION)
+AC_SUBST(MACOS_DEPLOYMENT_SDK)
+
 dnl --------------------------------------------------------------
 dnl End of configure script option section
 dnl --------------------------------------------------------------