##
##  emscripten.spec -- OpenPKG RPM Package Specification
##  Copyright (c) 2000-2022 OpenPKG Project <http://openpkg.org/>
##
##  Permission to use, copy, modify, and distribute this software for
##  any purpose with or without fee is hereby granted, provided that
##  the above copyright notice and this permission notice appear in all
##  copies.
##
##  THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
##  WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
##  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
##  IN NO EVENT SHALL THE AUTHORS AND COPYRIGHT HOLDERS AND THEIR
##  CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
##  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
##  LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
##  USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
##  ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
##  OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
##  OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
##  SUCH DAMAGE.
##

#   package information
Name:         emscripten
Summary:      LLVM to JavaScript Compiler
URL:          http://emscripten.org/
Vendor:       Emscripten Project
Packager:     OpenPKG Project
Distribution: OpenPKG Community
Class:        EVAL
Group:        Language
License:      MIT
Version:      3.0.0
Release:      20211123

#   list of sources
Source0:      https://github.com/kripken/emscripten/archive/%{version}.tar.gz

#   build information
BuildPreReq:  OpenPKG, openpkg >= 20160101
PreReq:       OpenPKG, openpkg >= 20160101, binaryen
BuildPreReq:  llvm, node, python
PreReq:       llvm, node, python

%description
    Emscripten is an LLVM-to-JavaScript compiler. It takes LLVM bitcode
    -- which can be generated from C/C++, using llvm-gcc or clang, or
    any other language that can be converted into LLVM -- and compiles
    that into JavaScript, which can be run on the Web (or anywhere else
    JavaScript can run).

%track
    prog emscripten = {
        version   = %{version}
        url       = https://github.com/kripken/emscripten/releases
        regex     = (\d+\.\d+\.\d+)\.tar\.gz
    }

%prep
    %setup -q

%build
    #   fix paths to Python
    %{l_shtool} subst \
        -e 's;#!/usr/bin/env python2;#!%{l_prefix}/bin/python;' \
        em++ em-config emar emcc emcmake emconfigure emlink.py emmake emranlib emscons emscripten.py

    #   remove unneccessary parts
    rm -rf third_party/websockify/Windows
    rm -rf tests
    rm -f system/include/libc/bits
    rm -f "site/source/_themes/emscripten_sphinx_rtd_theme/static/css/theme - prior to centering.css"

%install
    #   create installation hierarchy
    %{l_shtool} mkdir -f -p -m 755 \
        $RPM_BUILD_ROOT%{l_prefix}/bin \
        $RPM_BUILD_ROOT%{l_prefix}/libexec/emscripten

    #   install Emscripten as a whole
    cp -rp * \
        $RPM_BUILD_ROOT%{l_prefix}/libexec/emscripten/

    #   provide executable wrappers
    for prog in em++ em-config emar emcc emcmake emconfigure emmake emranlib emrun emscons; do
        ( echo "#!/bin/sh"
          echo "EMSCRIPTEN=%{l_prefix}/libexec/emscripten"
          echo "export EMSCRIPTEN"
          echo "EMCC_FAST_COMPILER=0"
          echo "export EMCC_FAST_COMPILER"
          echo "exec %{l_prefix}/libexec/emscripten/$prog \${1+\"\$@\"}"
        ) >$prog.sh
        %{l_shtool} install -c -m 755 \
            $prog.sh $RPM_BUILD_ROOT%{l_prefix}/bin/$prog
    done

    #   determime installation files
    %{l_rpmtool} files -v -ofiles -r$RPM_BUILD_ROOT %{l_files_std}

%files -f files

%clean