Prebuild fbc+emscripten installer
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- Posts: 23
- Joined: Oct 28, 2023 13:31
Prebuild fbc+emscripten installer
Hello fb community,
I'm trying to build the fbc+emscripten compiler to build some programs and play around.
But the guide from https://freebasic.net/wiki/devbuildemscripten seems to be very extensive and complicated and seems to link to https://freebasic.net/wiki/DevBuildWindows which has even more tools and folders to manage.
Also, I'm not sure if this guild isn't outdated now.
So I want to ask if there are any prebuild version of the fbc+emscripten compiler - or if it would be possible for you to provide a script (or even a program written in FreeBasic) than automates all the downloading, unpacking, compiling etc. until you can run the command to compile your own programs.
I have a Linux and a Windows computer to try this.
Best Regards,
linuxanddos
EDIT: There are still some open questions (see below), but I have managed to create a Docker container building one of my FreeBasic programs for several OS' including emscripten.
I'm trying to build the fbc+emscripten compiler to build some programs and play around.
But the guide from https://freebasic.net/wiki/devbuildemscripten seems to be very extensive and complicated and seems to link to https://freebasic.net/wiki/DevBuildWindows which has even more tools and folders to manage.
Also, I'm not sure if this guild isn't outdated now.
So I want to ask if there are any prebuild version of the fbc+emscripten compiler - or if it would be possible for you to provide a script (or even a program written in FreeBasic) than automates all the downloading, unpacking, compiling etc. until you can run the command to compile your own programs.
I have a Linux and a Windows computer to try this.
Best Regards,
linuxanddos
EDIT: There are still some open questions (see below), but I have managed to create a Docker container building one of my FreeBasic programs for several OS' including emscripten.
Last edited by linuxanddos on Jul 25, 2024 11:00, edited 1 time in total.
Re: Prebuild fbc+emscripten installer
Basically, you need FreeBasic for your system, and its source code. Then, you need to install Emscripten: under Linux, the procedure is something like:
As described here: https://emscripten.org/docs/getting_sta ... loads.html
At this point, you need to compile the runtime libraries for Emscripten, you do it with:
You might have to manually copy the files :termlib_min.js , fb_shell.html , fb_rtlib.js , fbextra.x in the lib directory and in the lib/freebasic/js-asmjs directory
At this point, it should be able to work
Code: Select all
git clone https://github.com/emscripten-core/emsdk.git
cd emsdk
git pull
./emsdk install latest
./emsdk activate latest
source ./emsdk_env.sh
At this point, you need to compile the runtime libraries for Emscripten, you do it with:
Code: Select all
make rtlib gfxlib2 TARGET=asmjs-unknown-emscripten ENABLE_STANDALONE=1
At this point, it should be able to work
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- Posts: 23
- Joined: Oct 28, 2023 13:31
Re: Prebuild fbc+emscripten installer
Thanks. Now it is almost working (on Linux).
But if I try to compile, there is the following error:
I think I've missed some environment variable, but sadly, I don't know which one.
EDIT: It seems like I do not have an /lib/freebasic directory.
But if I try to compile, there is the following error:
Code: Select all
wasm-ld: error: unable to find library -lfb
wasm-ld: error: unable to find library -lfbgfx
wasm-ld: error: unable to find library -lfb
EDIT: It seems like I do not have an /lib/freebasic directory.
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- Joined: Oct 28, 2023 13:31
Re: Prebuild fbc+emscripten installer
I have found the folder: /usr/local/lib/freebasic/
Now it is compiling, but it seems like I have to enable async support...
Now it is compiling, but it seems like I have to enable async support...
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- Posts: 23
- Joined: Oct 28, 2023 13:31
Re: Prebuild fbc+emscripten installer
Now my software is almost working.
But I need some conditional compiling distinguishing between emscripten and the other platforms.
Is there something like
for emscripten/wasm?
But I need some conditional compiling distinguishing between emscripten and the other platforms.
Is there something like
Code: Select all
#ifdef __FB_DOS__
'code here
#endif
Re: Prebuild fbc+emscripten installer
There is a builtin define, available since emscripten target was added to fbc:
Not in the wiki / manual, but should probably be added (even if exact naming changes in future).
Code: Select all
'' defined for '-target js-asmjs'
#ifdef __FB_JS__
#endif
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- Joined: Oct 28, 2023 13:31
Re: Prebuild fbc+emscripten installer
Somewhere in this forum I have read that it is possible to run JS code from your FreeBasic app. Sadly, I don't find this message again.
Instead, I found this: https://emscripten.org/docs/porting/con ... rom-native
How can I use this in FreeBasic?
Instead, I found this: https://emscripten.org/docs/porting/con ... rom-native
How can I use this in FreeBasic?
Re: Prebuild fbc+emscripten installer
Windows, Normal fb (no emscripten) :
Code: Select all
Dim As Ubyte r
Dim Shared As String c
Do
Read r
If r=0 Then Exit Do
c+=Chr(r)
Loop
Function java(message As String) As String
Dim As String s
s+="WSH.Echo('"+message+"');"
s+="var console = {"+Chr(10)
s+=" info: function (s){"+Chr(10)
s+=" WSH.Echo(s);"+Chr(10)
s+=" }"+Chr(10)
s+="}"+Chr(10)
s+="var document = {"+Chr(10)
s+=" write : function (s){"+Chr(10)
s+=" WSH.Echo(s);"+Chr(10)
s+=" }"+Chr(10)
s+="}"+Chr(10)
s+="var alert = function (s){"+Chr(10)
s+=" WSH.Echo(s);"+Chr(10)
s+="}"+Chr(10)
s+="console.info("""+c+ """);"+Chr(10)
s+="document.write(""\n\n\n Goodbye"");"+Chr(10)
s+="alert("" Press any key to end . . ."");"+Chr(10)
Return s
End Function
sub savefile(filename As String,p As String)
Dim As Long n=Freefile
If Open (filename For Binary Access Write As #n)=0 Then
Put #n,,p
Close
Else
Print "Unable to save " + filename:Sleep:End
End If
End sub
Sub runscript(filename As String)
Shell "cscript.exe /Nologo "+ filename
End Sub
savefile("script.js",java("Testing .js script file"))
runscript("script.js")
Kill "script.js"
Sleep
Data _
92,110,92,110,79,32,110,111,111,110,32,111,102,32,108,105,102,101,33,32,79,32,116,105,109,101,32,116,111,32,99,101,108,101,98,114,97,116,101,33,92,110,79,32,115,117,109,109,101,114,32,103,97,114,100,101,110,33,92,110,82,101,108,101,110,116,108,101,115,115,108,121,32,104,97,112,112,121,32,97,110,100,32,101,120,112,101,99,116,97,110,116,44,32,115,116,97,110,100,105,110,103,58,32,45,92,110,87,97,116,99,104,105,110,103,32,97,108,108,32,100,97,121,32,97,110,100,32,110,105,103,104,116,44,32,102,111,114,32,102,114,105,101,110,100,115,32,73,32,119,97,105,116,58,92,110,87,104,101,114,101,32,97,114,101,32,121,111,117,44,32,102,114,105,101,110,100,115,63,32,67,111,109,101,33,32,73,116,32,105,115,32,116,105,109,101,33,32,73,116,39,115,32,108,97,116,101,33,0
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Re: Prebuild fbc+emscripten installer
I was delayed by a few Protoss Carriers, the hive and all the other Zerg got blown up, but I survived!
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Re: Prebuild fbc+emscripten installer
https://www.freebasic.net/forum/viewtopic.php?t=26545linuxanddos wrote: ↑Apr 13, 2024 5:53 Somewhere in this forum I have read that it is possible to run JS code from your FreeBasic app. Sadly, I don't find this message again.
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- Posts: 23
- Joined: Oct 28, 2023 13:31
Re: Prebuild fbc+emscripten installer
Sorry, but I am searching for an option to call JavaScript code included in an .html file from an enscriptem FreeBasic build to use the capabilities of the browser. Like I stated here:
I'm trying to use the functions of the link provided, but I do not know how to use it in a FreeBasic source code.Instead, I found this: https://emscripten.org/docs/porting/con ... rom-native
How can I use this in FreeBasic?