How to export poppler into wasm

[tianmuji]

when I try to export poppler into wasm using
get_poppler_library from
https://github.com/emscripten-core/emscripten/blob/main/test/common.py#L1632

I got following error

FreeType build system -- automatic system detection

The following settings are used:

  platform                    unix
  compiler                    /Users/yujie_wu/Documents/emscripten-main/emcc
  configuration directory     ./builds/unix
  configuration rules         ./builds/unix/unix.mk

If this does not correspond to your system or settings please remove the file
`config.mk' from this directory then read the INSTALL file for help.

Otherwise, simply type `/Library/Developer/CommandLineTools/usr/bin/make' again to build the library,
or `/Library/Developer/CommandLineTools/usr/bin/make refdoc' to build the API reference (the latter needs python).

Generating modules list in ./objs/ftmodule.h...
* module: truetype  (Windows/Mac font files with extension *.ttf or *.ttc)
* module: type1     (Postscript font files with extension *.pfa or *.pfb)
* module: cff       (OpenType fonts with extension *.otf)
* module: cid       (Postscript CID-keyed fonts, no known extension)
* module: pfr       (PFR/TrueDoc font files with extension *.pfr)
* module: type42    (Type 42 font files with no known extension)
* module: winfnt    (Windows bitmap fonts with extension *.fnt or *.fon)
* module: pcf       (pcf bitmap fonts)
* module: bdf       (bdf bitmap fonts)
* module: sfnt      (helper module for TrueType & OpenType formats)
* module: autofit   (automatic hinting module)
* module: pshinter  (Postscript hinter module)
* module: raster    (monochrome bitmap renderer)
* module: smooth    (anti-aliased bitmap renderer)
* module: smooth    (anti-aliased bitmap renderer for LCDs)
* module: smooth    (anti-aliased bitmap renderer for vertical LCDs)
* module: psaux     (Postscript Type 1 & Type 2 helper module)
* module: psnames   (Postscript & Unicode Glyph name handling)
done.
cd builds/unix; ./configure  '--disable-shared' '--without-zlib'
checking build system type... 
-- end configure stdout --
-- configure stderr --
configure: sh ./configure --disable-shared --without-zlib
Invalid configuration `aarch64-apple-darwin21.6.0': machine `aarch64-apple' not recognized
configure: error: /bin/sh ./config.sub aarch64-apple-darwin21.6.0 failed
make: *** [setup] Error 1
emconfigure: error: 'sh ./configure --disable-shared --without-zlib' failed (returned 2)

-- end configure stderr --

I referenced to freetype repo at gitlab
https://gitlab.freedesktop.org/freetype/freetype/-/blob/master/builds/mac/README?ref_type=heads

I found the platform unix is correct but platform not supported

Could anyone please help me figure out the problem?
Many thanks

[sbc100]

What command are you running to get that error?

It looks like perhaps the version of poppler that we include in test/third_party/poppler/ doesn't know about the aarch64-apple (likely because it predates apple using arm64).

I would just grab the latest version of poppler from the internet and try using emconfigure to configure it.

[tianmuji]

Thank you for your reply

I create a new poppler.py file and import get_poppler_library from test/common

# Import the function from test/common.py

from common import RunnerCore
def main():
    runner = RunnerCore()
    runner.setUp()
    runner.get_poppler_library(None)
if __name__ == "__main__":  
    main()

then I run python3 poppler.py using mac (m2 version)

should I just wait for your updates?

[sbc100]

No. you shouldn't be importing parts of the emscripten test suite.

If you want to build poppler with emscripten I the first step is probably to run the poppler configure script with emconfigure. This is basically what the test code does anyway.