Bug #16401: [BACKPORT] Disable _FORTIFY_SOURCE on mingw

• Status: Closed
• Assignee: -
• Target version: -
• Backport: 2.5: REQUIRED, 2.6: DONE

[nobu (Nobuyoshi Nakada)]

The latest version of mingw gcc on cygwin doesn't work with _FORTIFY_SOURCE.
The following commits need to be backported to build.

• a7b9f085ff952fcb18f82de39b3bf9ab7e5ba3e7
• 9165fcdfa309052a2adc3c6100ab24204de6c2d1
• e42d9d8df87f58b9bfa65647249822df25851375

[usa (Usaku NAKAMURA)]

• Backport changed from 2.5: REQUIRED, 2.6: REQUIRED to 2.5: REQUIRED, 2.6: DONE