QGIS_CATCH_SEGV=1 to get backtraces in case of crash

Makefile

@@ -29,7 +29,7 @@ src:
 
 .PHONY: update-src
 update-src: src
-	cd src && git checkout $(QGIS_BRANCH) && git pull --rebase && git log -n 1
+	cd src && git checkout $(QGIS_BRANCH) && git pull --rebase && git log -n 1 && git status
 
 .PHONY: build-builder
 build-builder:

README.md

@@ -23,6 +23,7 @@ You can use the following variables (`-e` option in `docker run`):
 * PGSERVICEFILE: If you want to change the default of `/project/pg_service.conf`
 * QGIS_PROJECT_FILE: If you want to change the default of `/project/project.qgs`
 * MAX_REQUESTS_PER_PROCESS: The number of requests a QGIS server will serve before being restarted by apache
+* QGIS_CATCH_SEGV: Set to "1" if you want stacktraces in the logs in case of segmentation faults.
 
 ## Running the client
 

acceptance_tests/docker-compose.yml

@@ -1,7 +1,8 @@
 mapserver:
   image: camptocamp/qgis-server:${DOCKER_TAG}
   environment:
-    QGIS_SERVER_LOG_LEVEL: 0
+    QGIS_SERVER_LOG_LEVEL: "0"
+    QGIS_CATCH_SEGV: "1"
   links:
     - db
   ports:

builder/build.sh

@@ -13,7 +13,8 @@ cmake /src \
       -DWITH_DESKTOP=ON \
       -DWITH_SERVER=ON \
       -DWITH_3D=ON \
-      -DBUILD_TESTING=OFF
+      -DBUILD_TESTING=OFF \
+      -DENABLE_TESTS=OFF
 
 ccache -M10G
 ninja install

server/runtime/usr/local/bin/qgis_mapserv_wrapper

@@ -8,4 +8,9 @@ source /tmp/init_env.sh
 # GDAL uses CWD to write temporary files. So we better be in a location writable by www-data.
 cd /tmp
 
-exec /usr/local/bin/qgis_mapserv.fcgi "$@"
+if [[ "${QGIS_CATCH_SEGV}" == 1 ]]
+then
+    exec catchsegv /usr/local/bin/qgis_mapserv.fcgi "$@"
+else
+    exec /usr/local/bin/qgis_mapserv.fcgi "$@"
+fi