iox-eclipse-iceoryx#2011 Remove GCC 5.4 from CI and document GCC 8.3 …

…as minimal version

.github/workflows/build-test.yml

@@ -32,6 +32,7 @@ jobs:
       - uses: actions/checkout@v3
       - uses: egor-tensin/setup-gcc@v1.3
         with:
+          # gcc 8.3 is compiler used in QNX 7.1
           version: 8
           platform: x64
       - uses: jwlawson/actions-setup-cmake@v1.13
@@ -132,16 +133,6 @@ jobs:
       - name: Run Thread Sanitizer
         run: ./tools/ci/build-test-ubuntu-with-sanitizers.sh clang tsan
 
-  # gcc 5.4 is compiler used in QNX 7.0
-  build-test-ubuntu-with-gcc5:
-    # prevent stuck jobs consuming runners for 6 hours
-    timeout-minutes: 60
-    runs-on: ubuntu-latest
-    needs: pre-flight-check
-    steps:
-      - uses: actions/checkout@v3
-      - run: ./tools/ci/build-test-ubuntu-with-gcc5.sh
-
   # Bazel sanity check
   build-test-ubuntu-bazel:
     # prevent stuck jobs consuming runners for 6 hours

doc/website/getting-started/installation.md

@@ -9,7 +9,7 @@ All iceoryx libraries are deployed as independent CMake packages. Posh is using
 - 64-bit hardware (e.g. x86_64 or aarch64; 32-bit hardware might work, but is not supported)
 - [CMake](https://cmake.org), 3.16 or later
 - One of the following compilers:
-    - [GCC](https://gcc.gnu.org), 8.3 or later (5.4 currently supported too)
+    - [GCC](https://gcc.gnu.org), 8.3 or later
     - [Clang](https://clang.llvm.org), 9.0 or later
     - [MSVC](https://visualstudio.microsoft.com/de/), part of Visual Studio 2019 or later
 - [libacl](http://download.savannah.gnu.org/releases/acl/), 2.2 or later. Only for Linux & QNX.
@@ -35,7 +35,7 @@ make install
 
 ### Linux
 
-Although we strive to be fully POSIX-compliant, we recommend using Ubuntu 18.04 and at least GCC 7.5.0 for development.
+Although we strive to be fully POSIX-compliant, we recommend using Ubuntu 20.04 and at least GCC 8.3 for development.
 
 You will need to install the following packages:
 
@@ -47,7 +47,7 @@ Additionally, there is an optional dependency to the [cpptoml](https://github.co
 
 ### QNX
 
-QNX SDP 7.0 and 7.1 are supported (shipping with gcc 5.4 and gcc 8.3 respectively).
+QNX SDP 7.1 is supported (shipping with gcc 8.3 respectively).
 
 The easiest way to build iceoryx on QNX is by using the build script and providing a toolchain file.
 We provide generic QNX SDP 7.0 toolchain files for ARM_64 and X86_64 in `./tools/toolchains/qnx` ([Direct Link](../../../tools/toolchains/qnx)).
@@ -118,7 +118,7 @@ The `CMakeLists.txt` from `iceoryx_meta` can be used to easily develop iceoryx w
     ```
 
     If the compilation fails, it is possible that the compilation failure originates
-    inside the Windows SDK and is not caused by iceoryx, see 
+    inside the Windows SDK and is not caused by iceoryx, see
     [Windows vcpkg-issue \#15035](https://github.com/microsoft/vcpkg/issues/15035#issuecomment-742427969.)
     In this case try to rebuild the cmake files with:
     ```bash

doc/website/release-notes/iceoryx-unreleased.md

@@ -4,6 +4,10 @@
 
 [Full Changelog](https://github.com/eclipse-iceoryx/iceoryx/compare/vx.x.x...vx.x.x) <!--NOLINT remove this when tag is set-->
 
+**Notes**
+
+- The minimal supported GCC compiler is now 8.3
+
 **Features:**
 
 - Add bazel asan, usan, tsan build config [#1547](https://github.com/eclipse-iceoryx/iceoryx/issues/1547)