# -*- coding: utf-8; mode: tcl; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- vim:fenc=utf-8:ft=tcl:et:sw=4:ts=4:sts=4

PortSystem                  1.0
PortGroup                   github 1.0
PortGroup                   java   1.0

github.setup                emscripten-core emscripten 3.1.31
revision                    0

categories                  lang devel
license                     MIT NCSA
maintainers                 {mcalhoun @MarcusCalhoun-Lopez} openmaintainer
homepage                    https://emscripten.org
description                 open source compiler toolchain to WebAssembly
long_description            Emscripten is a complete Open Source compiler toolchain to WebAssembly.

checksums                   rmd160  8a8d8f454e1a53f78529e0f43e72804f47cd993b \
                            sha256  da1c1dade4c6b561f0482805f035cf9964f39493d8582cea5d1a26a23acca0ef \
                            size    28649584

set python_branch           3.11
configure.python            ${prefix}/bin/python${python_branch}
set python_version          [string map {. {}} ${python_branch}]

set install_loc             ${destroot}${prefix}/libexec/${name}

if {${subport} eq ${name}} {

    depends_lib-append      port:python${python_version}
    depends_build-append    bin:npm:npm9

    # for building cache libraries
    depends_build-append    port:git \
                            path:bin/cmake:cmake

    # clang-devel is being used since emscripten requires Clang >= 16
    depends_run-append      port:binaryen \
                            port:clang-devel \
                            bin:node:nodejs18

    destroot.env-append     PYTHON=${configure.python} \
                            PATH=${frameworks_dir}/Python.framework/Versions/${python_branch}/bin:$env(PATH)

    configure {
        # replicate
        #     cd ${worksrcpath} && ./emcc --generate-config
        #     edit resulting .emscripten
        xinstall        -m 0644 ${filespath}/emscripten                                 ${worksrcpath}/.emscripten
        reinplace       "s|__MACPORTS_LLVM_ROOT__|${prefix}/libexec/llvm-devel/bin|g"   ${worksrcpath}/.emscripten
        reinplace       "s|__MACPORTS_BINARYEN_ROOT__|${prefix}|g"                      ${worksrcpath}/.emscripten
        reinplace       "s|__MACPORTS_NODE_JS__|${prefix}/bin/node|g"                   ${worksrcpath}/.emscripten
        reinplace       "s|__MACPORTS_JAVA__|${java.home}/bin/java|g"                   ${worksrcpath}/.emscripten

        system          -W ${worksrcpath}                                               "${configure.python} tools/create_entry_points.py"
    }

    build {}

    # N.B. the install script calls npm, which downloads (and sometimes builds) external libraries.
    # This should happen in the fetch and build phases, but it is not clear how to force npm to do this.
    #
    # Please check node_modules/ws/builderror.log for silent errors after destroot phase.

    destroot.destdir    DESTDIR=${install_loc}

    # see https://docs.npmjs.com/cli/v7/commands/npm-install
    destroot.env-append NODE_ENV=production

    post-destroot {
        # install the config file
        xinstall -m 0644 ${worksrcpath}/.emscripten ${install_loc}

        # put certain binaries where they can be found
        foreach bin {em++ em-config emar embuilder emcc emcmake emconfigure emmake emranlib emrun emscons emsize} {
            ln -s   ${prefix}/libexec/${name}/${bin}    ${destroot}${prefix}/bin/
            ln -s   ${prefix}/libexec/${name}/${bin}.py ${destroot}${prefix}/bin/
        }

        # generate cache libraries
        # options: SYSTEM USER MINIMAL ALL
        #
        # This process also seems to download and build, which should not happen in the destroot phase.
        #
        system  -W ${install_loc}  "env PATH=${frameworks_dir}/Python.framework/Versions/${python_branch}/bin:$env(PATH) ${configure.python} embuilder.py build MINIMAL"

        # do not generate new cache libraries
        # this must be done *after* running embuilder.py
        reinplace   "s|# FROZEN_CACHE|FROZEN_CACHE|g"    ${install_loc}/.emscripten
    }
}

#subport ${name}-man {
    # man files have to be built separately
#}

#subport ${name}-docs {
#}