Error: expected expression before ‘?’

[aarree]

Hi,
I am new to haxe and I've got the following errors while trying to compile the Hello World example.
OS; Ubuntu (WSL)
compile.hxml

-cp src
-hl out/main.c
-lib hlsdl
-lib heaps
-main Main
-debug

gcc command

gcc -o myapp out/main.c -I ./out -lhl -L /usr/local/lib/*.hdll

Error

      | 
      |sdl_Window_set_displayMode
./out/hl/functions.c:8687: error: ‘sdl_win_display_handle’ undeclared here (not in a function)
In file included from out/main.c:40:
./out/sdl/Window.c: In function ‘sdl_Window_set_displayMode’:
./out/sdl/Window.c:272:7: error: expected expression before ‘?’ token
  272 |  r2 = ?sdl_win_set_display_mode(r3,r4,r5,r8);
      |       ^
./out/sdl/Window.c:272:8: warning: implicit declaration of function ‘sdl_win_set_display_mode’; did you mean ‘sdl_Window_set_displayMode’? [-Wimplicit-function-declaration]
  272 |  r2 = ?sdl_win_set_display_mode(r3,r4,r5,r8);
      |        ^~~~~~~~~~~~~~~~~~~~~~~~
      |        sdl_Window_set_displayMode
./out/sdl/Window.c: In function ‘sdl_Window_get_currentMonitor’:
./out/sdl/Window.c:442:7: error: expected expression before ‘?’ token
  442 |  r1 = ?sdl_win_display_handle(r2);
      |       ^
./out/sdl/Window.c:442:8: warning: implicit declaration of function ‘sdl_win_display_handle’ [-Wimplicit-function-declaration]
  442 |  r1 = ?sdl_win_display_handle(r2);
      |        ^~~~~~~~~~~~~~~~~~~~~~
./out/sdl/Window.c:442:5: warning: assignment to ‘int’ from ‘void **’ makes integer from pointer without a cast [-Wint-conversion]
  442 |  r1 = ?sdl_win_display_handle(r2);
      |     ^
In file included from out/main.c:205:
./out/h3d/impl/GlDriver.c: In function ‘h3d_impl_GlDriver_uploadTexturePixels’:
./out/h3d/impl/GlDriver.c:3914:2: error: expected expression before ‘?’ token
 3914 |  ?sdl_gl_compressed_tex_sub_image3d(r6,r3,r26,r28,r4,r30,r31,r32,r33,r13,r25);
      |  ^
./out/h3d/impl/GlDriver.c:3914:3: warning: implicit declaration of function ‘sdl_gl_compressed_tex_sub_image3d’; did you mean ‘sdl_gl_compressed_tex_image3d’? [-Wimplicit-function-declaration]
 3914 |  ?sdl_gl_compressed_tex_sub_image3d(r6,r3,r26,r28,r4,r30,r31,r32,r33,r13,r25);
      |   ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
      |   sdl_gl_compressed_tex_image3d
./out/h3d/impl/GlDriver.c:3942:2: error: expected expression before ‘?’ token
 3942 |  ?sdl_gl_tex_sub_image3d(r6,r3,r26,r28,r4,r30,r31,r32,r33,r34,r25);
      |  ^
./out/h3d/impl/GlDriver.c:3942:3: warning: implicit declaration of function ‘sdl_gl_tex_sub_image3d’; did you mean ‘sdl_gl_tex_image3d’? [-Wimplicit-function-declaration]
 3942 |  ?sdl_gl_tex_sub_image3d(r6,r3,r26,r28,r4,r30,r31,r32,r33,r34,r25);
      |   ^~~~~~~~~~~~~~~~~~~~~~
      |   sdl_gl_tex_image3d
In file included from out/main.c:430:
./out/sdl/Sdl.c: In function ‘sdl_Sdl_getScreenWidth’:
./out/sdl/Sdl.c:225:7: error: expected expression before ‘?’ token
  225 |  r1 = ?sdl_get_screen_width();
      |       ^
./out/sdl/Sdl.c:225:8: warning: implicit declaration of function ‘sdl_get_screen_width’; did you mean ‘sdl_Sdl_getScreenWidth’? [-Wimplicit-function-declaration]
  225 |  r1 = ?sdl_get_screen_width();
      |        ^~~~~~~~~~~~~~~~~~~~
      |        sdl_Sdl_getScreenWidth
./out/sdl/Sdl.c:225:5: warning: assignment to ‘int’ from ‘void **’ makes integer from pointer without a cast [-Wint-conversion]
  225 |  r1 = ?sdl_get_screen_width();
      |     ^
./out/sdl/Sdl.c:230:7: error: expected expression before ‘?’ token
  230 |  r1 = ?sdl_get_screen_width_of_window(r2);
      |       ^
./out/sdl/Sdl.c:230:8: warning: implicit declaration of function ‘sdl_get_screen_width_of_window’ [-Wimplicit-function-declaration]
  230 |  r1 = ?sdl_get_screen_width_of_window(r2);
      |        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
./out/sdl/Sdl.c:230:5: warning: assignment to ‘int’ from ‘void **’ makes integer from pointer without a cast [-Wint-conversion]
  230 |  r1 = ?sdl_get_screen_width_of_window(r2);
      |     ^
./out/sdl/Sdl.c: In function ‘sdl_Sdl_getScreenHeight’:
./out/sdl/Sdl.c:238:7: error: expected expression before ‘?’ token
  238 |  r1 = ?sdl_get_screen_height();
      |       ^
./out/sdl/Sdl.c:238:8: warning: implicit declaration of function ‘sdl_get_screen_height’; did you mean ‘sdl_Sdl_getScreenHeight’? [-Wimplicit-function-declaration]
  238 |  r1 = ?sdl_get_screen_height();
      |        ^~~~~~~~~~~~~~~~~~~~~
      |        sdl_Sdl_getScreenHeight
./out/sdl/Sdl.c:238:5: warning: assignment to ‘int’ from ‘void **’ makes integer from pointer without a cast [-Wint-conversion]
  238 |  r1 = ?sdl_get_screen_height();
      |     ^
./out/sdl/Sdl.c:243:7: error: expected expression before ‘?’ token
  243 |  r1 = ?sdl_get_screen_height_of_window(r2);
      |       ^
./out/sdl/Sdl.c:243:8: warning: implicit declaration of function ‘sdl_get_screen_height_of_window’ [-Wimplicit-function-declaration]
  243 |  r1 = ?sdl_get_screen_height_of_window(r2);
      |        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
./out/sdl/Sdl.c:243:5: warning: assignment to ‘int’ from ‘void **’ makes integer from pointer without a cast [-Wint-conversion]
  243 |  r1 = ?sdl_get_screen_height_of_window(r2);
      |     ^
./out/sdl/Sdl.c: In function ‘sdl_Sdl_getDisplayModes’:
./out/sdl/Sdl.c:271:7: error: expected expression before ‘?’ token
  271 |  r1 = ?sdl_get_display_modes(r2);
      |       ^
./out/sdl/Sdl.c:271:8: warning: implicit declaration of function ‘sdl_get_display_modes’; did you mean ‘sdl_Sdl_getDisplayModes’? [-Wimplicit-function-declaration]
  271 |  r1 = ?sdl_get_display_modes(r2);
      |        ^~~~~~~~~~~~~~~~~~~~~
      |        sdl_Sdl_getDisplayModes
./out/sdl/Sdl.c:271:5: warning: assignment to ‘varray *’ from incompatible pointer type ‘void **’ [-Wincompatible-pointer-types]
  271 |  r1 = ?sdl_get_display_modes(r2);
      |     ^
./out/sdl/Sdl.c: In function ‘sdl_Sdl_getCurrentDisplayMode’:
./out/sdl/Sdl.c:308:7: error: expected expression before ‘?’ token
  308 |  r3 = ?sdl_get_current_display_mode(r4,r2);
      |       ^
./out/sdl/Sdl.c:308:8: warning: implicit declaration of function ‘sdl_get_current_display_mode’ [-Wimplicit-function-declaration]
  308 |  r3 = ?sdl_get_current_display_mode(r4,r2);
      |        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
./out/sdl/Sdl.c:308:5: warning: assignment to ‘vdynamic *’ from incompatible pointer type ‘void **’ [-Wincompatible-pointer-types]
  308 |  r3 = ?sdl_get_current_display_mode(r4,r2);
      |     ^
./out/sdl/Sdl.c: In function ‘sdl_Sdl_getDisplays’:
./out/sdl/Sdl.c:323:7: error: expected expression before ‘?’ token
  323 |  r0 = ?sdl_get_displays();
      |       ^
./out/sdl/Sdl.c:323:8: warning: implicit declaration of function ‘sdl_get_displays’; did you mean ‘sdl_Sdl_getDisplays’? [-Wimplicit-function-declaration]
  323 |  r0 = ?sdl_get_displays();
      |        ^~~~~~~~~~~~~~~~
      |        sdl_Sdl_getDisplays
./out/sdl/Sdl.c:323:5: warning: assignment to ‘varray *’ from incompatible pointer type ‘void **’ [-Wincompatible-pointer-types]
  323 |  r0 = ?sdl_get_displays();
      |     ^
./out/sdl/Sdl.c:337:7: error: expected expression before ‘?’ token
  337 |  r1 = ?sdl_get_displays();
      |       ^
./out/sdl/Sdl.c:337:5: warning: assignment to ‘varray *’ from incompatible pointer type ‘void **’ [-Wincompatible-pointer-types]
  337 |  r1 = ?sdl_get_displays();
      |     ^
In file included from out/main.c:430:
./out/sdl/Sdl.c: In function ‘sdl_Sdl_setClipboardText’:
./out/sdl/Sdl.c:443:7: error: expected expression before ‘?’ token
  443 |  r1 = ?sdl_set_clipboard_text(r2);
      |       ^
./out/sdl/Sdl.c:443:8: warning: implicit declaration of function ‘sdl_set_clipboard_text’; did you mean ‘sdl_Sdl_setClipboardText’? [-Wimplicit-function-declaration]
  443 |  r1 = ?sdl_set_clipboard_text(r2);
      |        ^~~~~~~~~~~~~~~~~~~~~~
      |        sdl_Sdl_setClipboardText
./out/sdl/Sdl.c: In function ‘sdl_Sdl_getClipboardText’:
./out/sdl/Sdl.c:450:7: error: expected expression before ‘?’ token
  450 |  r0 = ?sdl_get_clipboard_text();
      |       ^
./out/sdl/Sdl.c:450:8: warning: implicit declaration of function ‘sdl_get_clipboard_text’; did you mean ‘sdl_Sdl_getClipboardText’? [-Wimplicit-function-declaration]
  450 |  r0 = ?sdl_get_clipboard_text();
      |        ^~~~~~~~~~~~~~~~~~~~~~
      |        sdl_Sdl_getClipboardText
./out/sdl/Sdl.c:450:5: warning: assignment to ‘vbyte *’ {aka ‘unsigned char *’} from incompatible pointer type ‘void **’ [-Wincompatible-pointer-types]
  450 |  r0 = ?sdl_get_clipboard_text();

[Aurel300]

Which version of Haxe are you using? I'm guessing it's an old one: the ? syntax for optional native HashLink dependencies hasn't always been supported.

[aarree]

Hey @Aurel300,
Thanks for getting back!
I am running a haxe:4.2.5 docker-container and build haschlink from git.
If i am not mistaken this should result in the newest Haxe and Hashlink versions.

Dockerfile looks like this.

FROM haxe:4.2.5
RUN mkdir -p /usr/src/app
WORKDIR /usr/src/app

# install dependencies
COPY *.hxml /usr/src/app/
RUN yes | haxelib install all

# compile the project
COPY . /usr/src/app

RUN apt-get update 
RUN apt-get install -y --no-install-recommends \
    g++ \
    libmbedtls-dev \
    libopenal-dev \
    libpng-dev \
    libsdl2-dev \
    libturbojpeg-dev \
    libuv1-dev \
    libvorbis-dev \
    libsqlite3-dev \
    make
    
RUN haxelib install hlsdl && \
    haxelib git heaps https://github.com/HeapsIO/heaps.git && \
    haxelib git hashlink https://github.com/HaxeFoundation/hashlink.git master other/haxelib/

RUN git clone https://github.com/HaxeFoundation/hashlink
RUN cd hashlink && make 
RUN cd hashlink && make install

RUN haxe compile.hxml

RUN dir
RUN cp hashlink/*.hdll /usr/src/app/.
# run the output when the container starts
RUN gcc -O3 -o helloWorld -std=c11 -I out out/main.c sdl.hdll ui.hdll fmt.hdll openal.hdll ui.hdll uv.hdll -lhl

# docker build -t my-haxe-app .
# docker run -it my-haxe-app

[tobil4sk]

The fix is yet to come in an official Haxe release, so you'll have to use a nightly build of Haxe for the Hashlink/C code to generate properly.
HaxeFoundation/haxe#10509

[aarree]

Thanks!
Could get it to work with the haxe_rc.