# Run simulator in Mojave **URL:** \ **Category:** iOS\ **Created:** [September 22, 2018, 6:25pm UTC](https://forum.xojo.com/t/run-simulator-in-mojave/45466 "2018-09-22T18:25:43Z")\ **Posts on this page:** 9\ **Page:** 1
**Author:** ![Eduardo\_Gutierrez\_de\_Oliveira](https://forum.xojo.com/user_avatar/forum.xojo.com/eduardo_gutierrez_de_oliveira/32/264_2.png) [@Eduardo\_Gutierrez\_de\_Oliveira](https://forum.xojo.com/u/Eduardo_Gutierrez_de_Oliveira)\ **Post date:** [September 22, 2018, 6:25pm UTC](https://forum.xojo.com/t/run-simulator-in-mojave/45466/1 "2018-09-22T18:25:43Z")
Hi. I noticed the new beta says it allows iOS 12 in the simulator. I have tried to run Xojo with the Xcode-beta 10 simulator for iOS 11 without luck. Before I try digging further, can someone confirm Xojo 2018r2 is not supposed to run the Xcode-beta simulator for any iOS version in Mojave? This may be clarified somewhere I’ve missed it. I haven’t asked beta access with the license I’m using but it may be time to do so, if the above is the way it is. I need a faster compile cycle than I currently have with a VM while testing Mojave for the company. ---
**Author:** ![Eduardo\_Gutierrez\_de\_Oliveira](https://forum.xojo.com/user_avatar/forum.xojo.com/eduardo_gutierrez_de_oliveira/32/264_2.png) [@Eduardo\_Gutierrez\_de\_Oliveira](https://forum.xojo.com/u/Eduardo_Gutierrez_de_Oliveira)\ **Post date:** [September 22, 2018, 6:27pm UTC](https://forum.xojo.com/t/run-simulator-in-mojave/45466/2 "2018-09-22T18:27:59Z")
Darn… [https://forum.xojo.com/conversation/post/406133](https://forum.xojo.com/conversation/post/406133) > [@406133:@Travis Hill](#): > > It sounds like you updated to Xcode 10, which is not supported in Xojo 2018r2 (but will likely be in a future update of Xojo). You can download and install Xcode 9.4.1 from here: ---
**Author:** ![Richard\_Allmendinger](https://forum.xojo.com/letter_avatar_proxy/v4/letter/r/c0e974/32.png) [@Richard\_Allmendinger](https://forum.xojo.com/u/Richard_Allmendinger)\ **Post date:** [September 27, 2018, 6:08pm UTC](https://forum.xojo.com/t/run-simulator-in-mojave/45466/3 "2018-09-27T18:08:21Z")
I updated to Mojave but kept Xcode 9.4.1. I have never upgraded to Xcode 10. In Xcode Preferences the command line tools are set to Xcode 9.4.1. However whenever I try to run an iOS project in the simulator or building the project, I now get an error: Linking Executable ld: entry point (start) undefined. Usually in crt1.o for architecture x86\_64 This happens even for iOS example projects that come with Xojo… ---
**Author:** ![Paul\_Lefebvre](https://forum.xojo.com/user_avatar/forum.xojo.com/paul_lefebvre/32/3152_2.png) [@Paul\_Lefebvre](https://forum.xojo.com/u/Paul_Lefebvre)\ **Post date:** [September 27, 2018, 8:30pm UTC](https://forum.xojo.com/t/run-simulator-in-mojave/45466/4 "2018-09-27T20:30:11Z")
[quote=407658:@Richard Allmendinger]Linking Executable ld: entry point (start) undefined. Usually in crt1.o for architecture x86\_64[/quote] We are looking into this. \<[https://xojo.com/issue/53515](https://xojo.com/issue/53515)\> ---
**Author:** ![Richard\_Allmendinger](https://forum.xojo.com/letter_avatar_proxy/v4/letter/r/c0e974/32.png) [@Richard\_Allmendinger](https://forum.xojo.com/u/Richard_Allmendinger)\ **Post date:** [September 28, 2018, 12:31am UTC](https://forum.xojo.com/t/run-simulator-in-mojave/45466/5 "2018-09-28T00:31:18Z")
[quote=407673:@Paul Lefebvre]We are looking into this. \<[https://xojo.com/issue/53515](https://xojo.com/issue/53515)\>[/quote] Thanks! ---
**Author:** ![Jeremie\_L](https://forum.xojo.com/user_avatar/forum.xojo.com/jeremie_l/32/150_2.png) [@Jeremie\_L](https://forum.xojo.com/u/Jeremie_L)\ **Post date:** [September 28, 2018, 12:51pm UTC](https://forum.xojo.com/t/run-simulator-in-mojave/45466/6 "2018-09-28T12:51:37Z")
WOW! I’m so happy I read this issue before upgrading to Mojave. Was going to upgrade this weekend… ---
**Author:** ![Jeremy\_Archibald](https://forum.xojo.com/letter_avatar_proxy/v4/letter/j/8797f3/32.png) [@Jeremy\_Archibald](https://forum.xojo.com/u/Jeremy_Archibald)\ **Post date:** [October 12, 2018, 5:43pm UTC](https://forum.xojo.com/t/run-simulator-in-mojave/45466/8 "2018-10-12T17:43:01Z")
Any update on this issue? ---
**Author:** ![AlbertoD](https://forum.xojo.com/letter_avatar_proxy/v4/letter/a/dbc845/32.png) [@AlbertoD](https://forum.xojo.com/u/AlbertoD)\ **Post date:** [October 12, 2018, 5:46pm UTC](https://forum.xojo.com/t/run-simulator-in-mojave/45466/9 "2018-10-12T17:46:13Z")
[quote=407673:@Paul Lefebvre]We are looking into this. \<[https://xojo.com/issue/53515](https://xojo.com/issue/53515)\>[/quote] Marked as fixed and verified. Next release will include this fix. ---
**Author:** ![system](https://forum.xojo.com/uploads/default/original/1X/455b4dcc0e61630e9f81940004ddffa49c432a46.png) [@system](https://forum.xojo.com/u/system)\ **Post date:** [October 29, 2020, 7:23pm UTC](https://forum.xojo.com/t/run-simulator-in-mojave/45466/10 "2020-10-29T19:23:04Z")