build: add bionic specific install step and add TeamCity build script

- Add logic to install GCC 9 for Ubuntu 18.04 in dependency script.
- Replace "ci_PR_arm64v8" with "ci_PR_arm64" in multiple scripts.
- Add TeamCity-specific script to manage build flags and dry-run options.
- Update contributing documentation to reflect architecture label changes.

build_system/.jetbrains_run_config/bash lpm_execute_compose_over_build_matrix.bash › build _service_ _popup_.run.xml

@@ -1,6 +1,6 @@
 <component name="ProjectRunConfigurationManager">
   <configuration default="false" name="bash lpm_crawl_libpointmatcher_build_matrix.bash ›  build &lt;service&gt; &lt;popup&gt;" type="ShConfigurationType" folderName="[LPM] C | Execute compose over build matrix" editBeforeRun="true">
-    <option name="SCRIPT_TEXT" value="bash lpm_crawl_libpointmatcher_build_matrix.bash --repository-version-build-matrix-override latest --os-name-build-matrix-override ubuntu --fail-fast -- build ci_PR_arm64v8" />
+    <option name="SCRIPT_TEXT" value="bash lpm_crawl_libpointmatcher_build_matrix.bash --repository-version-build-matrix-override latest --os-name-build-matrix-override ubuntu --fail-fast -- build ci_PR_arm64" />
     <option name="INDEPENDENT_SCRIPT_PATH" value="true" />
     <option name="SCRIPT_PATH" value="" />
     <option name="SCRIPT_OPTIONS" value="" />
@@ -16,4 +16,4 @@
     </envs>
     <method v="2" />
   </configuration>
-</component>
+</component>

build_system/.jetbrains_run_config/bash lpm_execute_compose_over_build_matrix.bash › build dependencies_arm64v8 ci_PR_arm64v8 _popup_.run.xml

@@ -1,6 +1,6 @@
 <component name="ProjectRunConfigurationManager">
-  <configuration default="false" name="bash lpm_crawl_libpointmatcher_build_matrix.bash ›  build ci_PR_arm64v8 &lt;popup&gt;" type="ShConfigurationType" folderName="[LPM] C | Execute compose over build matrix" editBeforeRun="true">
-    <option name="SCRIPT_TEXT" value="bash lpm_crawl_libpointmatcher_build_matrix.bash --repository-version-build-matrix-override latest --os-name-build-matrix-override ubuntu --cmake-build-type-build-matrix-override Release --ubuntu-version-build-matrix-override jammy --fail-fast -- build ci_PR_arm64v8" />
+  <configuration default="false" name="bash lpm_crawl_libpointmatcher_build_matrix.bash ›  build ci_PR_arm64 &lt;popup&gt;" type="ShConfigurationType" folderName="[LPM] C | Execute compose over build matrix" editBeforeRun="true">
+    <option name="SCRIPT_TEXT" value="bash lpm_crawl_libpointmatcher_build_matrix.bash --repository-version-build-matrix-override latest --os-name-build-matrix-override ubuntu --cmake-build-type-build-matrix-override Release --ubuntu-version-build-matrix-override jammy --fail-fast -- build ci_PR_arm64" />
     <option name="INDEPENDENT_SCRIPT_PATH" value="true" />
     <option name="SCRIPT_PATH" value="" />
     <option name="SCRIPT_OPTIONS" value="" />
@@ -16,4 +16,4 @@
     </envs>
     <method v="2" />
   </configuration>
-</component>
+</component>

build_system/lpm_crawl_libpointmatcher_build_matrix.teamcity.bash

@@ -0,0 +1,35 @@
+#!/bin/bash
+
+# ....Architecture..............................................
+TC_LPM_BUILD_ARCH=%TC_LPM_BUILD_ARCH%
+if [[ -z ${TC_LPM_BUILD_ARCH} ]]; then
+  TC_LPM_BUILD_ARCH=ci_PR_multiarch
+fi
+echo "Build architecture: ${TC_LPM_BUILD_ARCH}"
+
+# ....Setup flags for dn_build_all.bash.........................
+LPM_CRAWL_BUILD_MATRIX_FLAGS=()
+# Add flag from TeamCity custom parameters
+LPM_CRAWL_BUILD_MATRIX_FLAGS+=($(echo %LPM_CRAWL_BUILD_MATRIX_FLAGS% | tr " " "\n"))
+if [[ -n "${LPM_CRAWL_BUILD_MATRIX_FLAGS}" ]]; then
+  echo "LPM_CRAWL_BUILD_MATRIX_FLAGS=("
+  for each in "${LPM_CRAWL_BUILD_MATRIX_FLAGS[@]}" ; do
+      echo "  ${each}"
+  done
+  echo ")"
+fi
+
+LPM_CRAWL_BUILD_MATRIX_FLAGS+=("--repository-version-build-matrix-override" "latest")
+LPM_CRAWL_BUILD_MATRIX_FLAGS+=("--fail-fast")
+LPM_CRAWL_BUILD_MATRIX_FLAGS+=("--" "build" "${TC_LPM_BUILD_ARCH:?err}")
+
+# ....Dry-run..............................................
+TC_DRY_RUN=%TC_DRY_RUN%
+if [[ ${TC_DRY_RUN} == true ]]; then
+  echo "Run in dry-run mode"
+  LPM_CRAWL_BUILD_MATRIX_FLAGS+=("--dry-run")
+fi
+
+# ....Final.....................................................
+echo -e "execute: bash lpm_crawl_libpointmatcher_build_matrix.bash ${LPM_CRAWL_BUILD_MATRIX_FLAGS[*]}"
+bash lpm_crawl_libpointmatcher_build_matrix.bash "${LPM_CRAWL_BUILD_MATRIX_FLAGS[@]}"

build_system/tests/tests_docker_dryrun_and_config/dryrun_lpm_crawl_libpointmatcher_build_matrix.bash

@@ -6,5 +6,5 @@ LPM_ROOT_DIR="$(dirname "${_PATH_TO_SCRIPT}")"
 cd "${LPM_ROOT_DIR}/../../"
 
 # ====begin========================================================================================
-#bash lpm_crawl_libpointmatcher_build_matrix.bash --fail-fast -- build --dry-run ci_PR_amd64 ci_PR_arm64v8
+#bash lpm_crawl_libpointmatcher_build_matrix.bash --fail-fast -- build --dry-run ci_PR_amd64 ci_PR_arm64
 bash lpm_crawl_libpointmatcher_build_matrix.bash --fail-fast -- build --dry-run

build_system/tests/tests_docker_dryrun_and_config/dryrun_lpm_crawl_libpointmatcher_build_matrix.bleeding.bash

@@ -6,5 +6,5 @@ LPM_ROOT_DIR="$(dirname "${_PATH_TO_SCRIPT}")"
 cd "${LPM_ROOT_DIR}/../../"
 
 # ====begin========================================================================================
-#bash lpm_crawl_libpointmatcher_build_matrix.bleeding.bash --fail-fast -- build --dry-run ci_PR_amd64 ci_PR_arm64v8
+#bash lpm_crawl_libpointmatcher_build_matrix.bleeding.bash --fail-fast -- build --dry-run ci_PR_amd64 ci_PR_arm64
 bash lpm_crawl_libpointmatcher_build_matrix.bleeding.bash --fail-fast -- build --dry-run

build_system/ubuntu/lpm_install_dependencies_general_ubuntu.bash

@@ -87,6 +87,16 @@ sudo apt-get update &&
 
 ##cmake --version
 
+# Retrieve ubuntu version number: DISTRIB_RELEASE
+source /etc/lsb-release
+print_msg "Ubuntu version is ${DISTRIB_RELEASE}"
+if [[ ${DISTRIB_RELEASE} == '18.04' ]]; then
+  sudo add-apt-repository ppa:ubuntu-toolchain-r/test
+  sudo apt update
+  sudo apt install gcc-9 g++-9
+fi
+
+
 teamcity_service_msg_blockClosed
 # .................................................................................................
 

doc/contributing/contributing_instructions.md

@@ -68,14 +68,14 @@ cd <path/to/libpointmatcher>/build_system
 bash lpm_crawl_libpointmatcher_build_matrix.bash --fail-fast -- build ci_PR
 
 # Run a specific case using build flags with multi-architecture 
-# virtualization using "ci_PR_amd64" and "ci_PR_arm64v8" services 
+# virtualization using "ci_PR_amd64" and "ci_PR_arm64" services 
 bash lpm_crawl_libpointmatcher_build_matrix.bash \
             --repository-version-build-matrix-override latest \
             --os-name-build-matrix-override ubuntu \
             --cmake-build-type-build-matrix-override RelWithDebInfo \
             --ubuntu-version-build-matrix-override jammy \
             --fail-fast \
-            -- build ci_PR_amd64 ci_PR_arm64v8
+            -- build ci_PR_amd64 ci_PR_arm64
 
 # Read the help for details
 bash lpm_crawl_libpointmatcher_build_matrix.bash --help
@@ -135,4 +135,4 @@ See [Commit Message References](commit_msg_reference.md) for details.
   - (in-progress) and it triggers the _semantic release automation_
 
 ## Writing Documentation
-The documentation is located in the /doc folder and uses the [Material for MkDocs](https://squidfunk.github.io/mkdocs-material/) Markdown framework. 
+The documentation is located in the /doc folder and uses the [Material for MkDocs](https://squidfunk.github.io/mkdocs-material/) Markdown framework.