Native Linux milestone 01
Real FreeBASIC 1.10.1 Linux x86_64 compiler executed.
Fixed #elif/!defined/|| syntax in host and graphics selectors for all targets.
Fixed X11 C int declarations and output storage to signed 32-bit Long.
Added Linux Phoenix timestamps through clock_gettime and gmtime_r; Windows time implementation preserved.
Console paths use canonical forward slash separators.
Native x86_64 host smoke links and runs; OpenGL selection verified.
Application is not yet buildable: WinINet networking and remaining Windows-only GUI/display/audio/gamepad paths require migration.
No full Linux runtime or Windows regression pass is claimed.
Parent: Host-API-Migration-2026-1007-1323-4645.
