Add a GCC build to the QEMU/IAR project (FreeRTOS#728)

* Rename the CORTEX_MPS2_QEMU_IAR directory to CORTEX_MPS2_QEMU_IAR_GCC

* Add makefile and startup.c.

* GCC build is working, but not yet running.

* Add eclipse project.

* Tidy up the linker file.
Add the debug launch file to the file system.

* Add printf-stdarg.c to the GCC build.

* Increase heap size for the GCC build.

* Copy IAR project files into a dedicated IAR build directory.

* Delete the IAR project from its original location now it is in its own build directory.

* Update headers to correct version number.

* Update lexicon.txt.

* Update core_checker.py.

* Change line endings in lexicon.txt.

* Increase the stack size of the task that prints out strings.

* Update linker script to build with older ld versions.

* Add links to the online documentation page for this demo.

* Fix line endings

Signed-off-by: Gaurav Aggarwal <[email protected]>

* Remove linker and project files from header check

Eclipse project files have names .project and .cproject. Python splitext
will treat these as file names and not as extension and as a result, it
is not enough to just add these to ignored extension list. Instead, we
need to add them to ignored files list.

Signed-off-by: Gaurav Aggarwal <[email protected]>

* Remove startup files from header check

Signed-off-by: Gaurav Aggarwal <[email protected]>

Co-authored-by: RichardBarry <[email protected]>
Co-authored-by: none <>
Co-authored-by: Gaurav Aggarwal <[email protected]>

.github/scripts/core_checker.py

@@ -48,6 +48,7 @@
     '.config',
     '.cpp',
     '.cproj',
+    '.cproject',
     '.crun',
     '.css',
     '.csv',
@@ -120,6 +121,7 @@
     '.la',
     '.launch',
     '.lcf',
+    '.ld',
     '.lds',
     '.lib',
     '.lk1',
@@ -172,6 +174,7 @@
     '.pref',
     '.prefs',
     '.prj',
+    '.project',
     '.properties',
     '.ps1',
     '.ptf',
@@ -254,12 +257,16 @@
     r'.*CMSIS.*',
     r'.*/makefile',
     r'.*/Makefile',
+    r'.*/printf-stdarg\.c.*',
+    r'.*/startup.*',
     r'.*/trcConfig\.h.*',
     r'.*/trcConfig\.c.*',
     r'.*/trcSnapshotConfig\.h.*'
 ]
 
 FREERTOS_IGNORED_FILES = [
+    '.cproject',
+    '.project',
     'fyi-another-way-to-ignore-file.txt',
     'mbedtls_config.h',
     'requirements.txt',