fix: enable PIE in build.zig for main exe (#3213)#3216
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The build option was declared and used for modules but was not applied to the main executable. Added so that produces a PIE binary.
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Fixes #3213
The
piebuild option was declared (-Dpie=true) but never applied to the mainzlsexecutable struct. As a result, the produced binary was always a regular executable regardless of thepieoption.Added
exe.pie = pie;so thatzig build -Dpie=truecorrectly produces a position-independent executable.