From 0cdb657f37cc94ff203a89c7b0810e2213b42905 Mon Sep 17 00:00:00 2001
From: pmp-p <mail.peny@free.fr>
Date: Mon, 14 Oct 2024 10:50:14 +0200
Subject: [PATCH] wip

---
 .buildconfig                              |  2 +-
 .github/workflows/build_wasm_postgres.yml |  2 +-
 extra/postgis.diff                        | 11 ++++
 extra/postgis.sh                          | 73 +++++++++++++++++++++++
 4 files changed, 86 insertions(+), 2 deletions(-)
 create mode 100644 extra/postgis.diff
 create mode 100755 extra/postgis.sh

diff --git a/.buildconfig b/.buildconfig
index 77092486..a3e21e91 100644
--- a/.buildconfig
+++ b/.buildconfig
@@ -1,2 +1,2 @@
 PG_VERSION=16.4
-SDK_VERSION=3.1.68.3bi
+SDK_VERSION=3.1.69.6bi
diff --git a/.github/workflows/build_wasm_postgres.yml b/.github/workflows/build_wasm_postgres.yml
index 1d309c39..2558f8a1 100644
--- a/.github/workflows/build_wasm_postgres.yml
+++ b/.github/workflows/build_wasm_postgres.yml
@@ -21,7 +21,7 @@ jobs:
       TOTAL_MEMORY: 128MB
       DEBUG: false
       OBJDUMP: true
-      EXTRA_EXT: vector
+      EXTRA_EXT: vector postgis
 
     steps:
       - uses: actions/checkout@v4
diff --git a/extra/postgis.diff b/extra/postgis.diff
new file mode 100644
index 00000000..a302bf55
--- /dev/null
+++ b/extra/postgis.diff
@@ -0,0 +1,11 @@
+--- postgis-3.5.0/configure
++++ postgis-3.5.0-wasm/configure
+@@ -18972,7 +18972,7 @@
+ 
+   { $as_echo "$as_me:${as_lineno-$LINENO}: checking PROJ version via compiled code" >&5
+ $as_echo_n "checking PROJ version via compiled code... " >&6; }
+-  if test "$cross_compiling" = yes; then :
++  if test "$cross_compiling_not_a_problem" = yes; then :
+   { { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
+ $as_echo "$as_me: error: in \`$ac_pwd':" >&2;}
+ as_fn_error $? "cannot run test program while cross compiling
diff --git a/extra/postgis.sh b/extra/postgis.sh
new file mode 100755
index 00000000..80d3e584
--- /dev/null
+++ b/extra/postgis.sh
@@ -0,0 +1,73 @@
+
+BUILD=build
+mkdir -p ${BUILD}
+
+
+
+pushd ${BUILD}
+    if [ -d postgis-3.5.0 ]
+    then
+        echo -n
+    else
+        [ -f postgis-3.5.0.tar.gz ] || wget -c https://download.osgeo.org/postgis/source/postgis-3.5.0.tar.gz
+        tar xfz postgis-3.5.0.tar.gz && rm postgis-3.5.0.tar.gz
+        pushd postgis-3.5.0
+            patch -p1 < ${WORKSPACE}/extra/postgis.diff
+        popd
+    fi
+popd
+
+if which emcc
+then
+    echo -n
+else
+    reset;
+    . /opt/python-wasm-sdk/wasm32-bi-emscripten-shell.sh
+    export PGROOT=${PGROOT:-/tmp/pglite}
+    export PATH=${PGROOT}/bin:$PATH
+fi
+
+pushd ${BUILD}/postgis-3.5.0
+
+    cat > config.site <<END
+ac_cv_exeext=.cjs
+POSTGIS_PROJ_VERSION=94
+ICONV_CFLAGS=
+ICONV_LDFLAGS=
+with_libiconv=$PREFIX
+ac_cv_func_iconv=no
+ac_cv_func_iconvctl=no
+cross_compiling=yes
+ac_cv_lib_proj_pj_get_release=no
+ac_cv_header_proj_api_h=no
+END
+
+    # --without-raster --without-topology --without-address-standardizer
+    # --without-raster => --with-gdalconfig=
+    # --with-gdalconfig=$PREFIX/bin/gdal-config
+    CONFIG_SITE=config.site emconfigure ./configure \
+        --without-raster --without-topology --without-address-standardizer \
+     --with-gdalconfig=$PREFIX/bin/gdal-config \
+     --without-gui --without-phony-revision --without-protobuf \
+     --without-interrupt-tests --without-json \
+     --without-libiconv --without-libiconv-prefix \
+     --with-pgconfig=/tmp/pglite/bin/pg_config \
+     --with-xml2config=$SDKROOT/devices/emsdk/usr/bin/xml2-config \
+     --with-projdir=$SDKROOT/devices/emsdk/usr \
+     --with-geosconfig=$SDKROOT/devices/emsdk/usr/bin/geos-config $@
+
+    # workaround iconv
+    mkdir -p loader/no/lib
+
+    # or would fail on some frontend functions linking.
+    sed -i 's/PGSQL_FE_LDFLAGS=-L/PGSQL_FE_LDFLAGS=-O0 -g3 -sERROR_ON_UNDEFINED_SYMBOLS=0 -L/g' loader/Makefile
+    #DEFAULT_LIBRARY_FUNCS_TO_INCLUDE="_emscripten_memcpy_js"
+    EMCC_CFLAGS="-O0 -g3 -sERROR_ON_UNDEFINED_SYMBOLS=0 -Wno-unused-function -lpng -ljpeg" emmake make
+    # /opt/python-wasm-sdk/devices/emsdk/usr/lib/libgeos.a
+    rm postgis/postgis-3.s*
+    PATH=/tmp/pglite/bin:$PATH PG_LINK="em++ $PREFIX/lib/libgeos.a $EMSDK/upstream/emscripten/cache/sysroot/lib/wasm32-emscripten/pic/libsqlite3.a"  emmake make install
+    rm $PGROOT/share/postgresql/extension/postgis*.sql
+    cp ./extensions/postgis/sql/postgis--3.5.0.sql $PGROOT/share/postgresql/extension/postgis--3.5.0.sql
+
+popd
+