GCC Windows export does not build as of #6577

[cmonr]

Description

When attempting to build an exported GCC project, the Makefile generated is now so large that the link step fails to link all files because the command is too long to be run successfully (all files are linked in one command).

Mbed CLI and Pip are at their latest versions. Issue is independent of Python versions and the target specified.

Steps to reproduce

git clone https://github.com/ARMmbed/mbed-os-example-blinky blinky
cd blinky
git clone https://github.com/ARMmbed/mbed-os

# Will pass
cd mbed-os
git checkout 53aa1b0
cd ..

mbed export --ide GCC_ARM --m K22F --clean -vv
make

# Will fail
cd mbed-os
git checkout 5038135
cd ..

mbed export --ide GCC_ARM --m K22F --clean -vv
make

Files

Attached are the generated makefiles for mbed-os-5.8.0, and the two Mbed OS SHAs in question.
Makefile-5.8.5.txt
Makefile-53aa1b0.txt
Makefile-5038135.txt

Issue request type

[ ] Question
[ ] Enhancement
[x] Bug

[ciarmcom]

ARM Internal Ref: MBOTRIAGE-415

[SeppoTakalo]

Duplicate of:

• Exporting to Makefile fails to build on Windows #6335
• mbed test failing to build for nrf51_dk since #6577  #6861

[cmonr]

Closing due to duplicate issue.