From 5361ff6f48c1fbf03c72ed9d9460c66ded9b2ac4 Mon Sep 17 00:00:00 2001
From: Marko Lindqvist <cazfi74@gmail.com>
Date: Sat, 1 Apr 2023 07:39:38 +0300
Subject: [PATCH 23/23] emsbuild.sh: Add initial version

See osdn #47470

Signed-off-by: Marko Lindqvist <cazfi74@gmail.com>
---
 Makefile.am                                |  2 +
 platforms/emscripten/emsbuild.sh           | 61 ++++++++++++++++++++++
 platforms/emscripten/setups/cross-ems.tmpl | 10 ++++
 3 files changed, 73 insertions(+)
 create mode 100755 platforms/emscripten/emsbuild.sh
 create mode 100644 platforms/emscripten/setups/cross-ems.tmpl

diff --git a/Makefile.am b/Makefile.am
index 62cf00942a..f9ef1896e2 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -84,6 +84,8 @@ EXTRA_DIST =	autogen.sh 			\
 		m4/testmatic.m4			\
 		meson.build			\
 		meson_options.txt		\
+		platforms/emscripten/emsbuild.sh		\
+		platforms/emscripten/setups/cross-ems.tmpl	\
 		platforms/flatpak/build_flatpak.sh	\
 		platforms/flatpak/org.freeciv.gtk322.yml	\
 		platforms/flatpak/org.freeciv.gtk4.yml	\
diff --git a/platforms/emscripten/emsbuild.sh b/platforms/emscripten/emsbuild.sh
new file mode 100755
index 0000000000..8b5197f72a
--- /dev/null
+++ b/platforms/emscripten/emsbuild.sh
@@ -0,0 +1,61 @@
+#!/bin/sh
+
+# emsbuild.sh: Build freeciv using emsdk
+#
+# (c) 2023 Freeciv team
+#
+# This script is licensed under Gnu General Public License version 2 or later.
+# See COPYING available from the same location you got this script.
+
+if test "$1" = "" || test "$1" = "-h" || test "$1" = "--help" ; then
+  echo "Usage: $0 <emsdk root dir>"
+  exit 1
+fi
+
+EMSDK_ROOT="$1"
+BUILD_ROOT="$(pwd)"
+PLATFORM_ROOT="$(cd $(dirname "$0") && pwd)"
+
+if test "${PLATFORM_ROOT}" = "${BUILD_ROOT}" ; then
+  echo "Run $0 from a separate build directory." >&2
+  exit 1
+fi
+
+if ! test -f "${EMSDK_ROOT}/emsdk_env.sh" ; then
+  echo "No environment setup script emsdk_env.sh in \"${EMSDK_ROOT}\"" >&2
+  exit 1
+fi
+
+# Sometimes emsdk environment setup script requires
+# cwd to be it's own directory.
+cd "${EMSDK_ROOT}" || exit 1
+if ! . "./emsdk_env.sh" ; then
+  echo "Sourcing \"${EMSDK_ROOT}/emsdk_env.sh\" failed!" >&2
+  exit 1
+fi
+cd "${BUILD_ROOT}" || exit 1
+
+# Add more emsdk directories to PATH
+export PATH="${EMSDK_ROOT}/upstream/emscripten:$PATH"
+
+sed -e "s,<EMSDK_ROOT>,${EMSDK_ROOT}," \
+    "${PLATFORM_ROOT}/setups/cross-ems.tmpl" > cross.txt
+
+if ! CC=emcc CXX=em++ AR=emar meson setup \
+     --cross-file=cross.txt \
+     -Ddefault_library=static \
+     -Ddebug=true \
+     -Dmwand=false \
+     -Druledit=false \
+     -Dclients=sdl2,stub \
+     -Dfcmp=[] \
+     "${PLATFORM_ROOT}/../../"
+then
+  echo "Setup with meson failed!" >&2
+  exit 1
+fi
+
+if ! ninja ; then
+  echo "Build with ninja failed!" >&2
+  exit 1
+fi
diff --git a/platforms/emscripten/setups/cross-ems.tmpl b/platforms/emscripten/setups/cross-ems.tmpl
new file mode 100644
index 0000000000..a5bdf09596
--- /dev/null
+++ b/platforms/emscripten/setups/cross-ems.tmpl
@@ -0,0 +1,10 @@
+[binaries]
+cc = '<EMSDK_ROOT>/upstream/emscripten/emcc'
+cpp = '<EMSDK_ROOT>/upstream/emscripten/em++'
+ar = '<EMSDK_ROOT>/upstream/emscripten/emar'
+strip = '<EMSDK_ROOT>/upstream/emscripten/emstrip'
+
+[properties]
+cross_inc_path = '<EMSDK_ROOT>/upstream/emscripten/system/include'
+cross_lib_path = '<EMSDK_ROOT>/upstream/emscripten/system/lib'
+crosser = false
-- 
2.39.2