Landing: d06b04d90ca5

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Project / Subsystem

gcc / gcc

Date

2026-07-09

Author

Karl Meakin

Commit

d06b04d90ca5dc572ecf49fc3676eb21e872ae14

Source

github

Perf win

Breaking

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All attributes

project: gcc
subsystem: gcc
patch_id: —
commit_hash: d06b04d90ca5dc572ecf49fc3676eb21e872ae14
source_type: github
headline: GCC drops support for pre-C++14 compilers
tldr: GCC removes the `CONSTEXPR` macro, as C++14 support is now a mandatory build requirement.
author: Karl Meakin
outcome: committed
performance_win: false
breaking_change: false
series_id: —
series_parts: []
tags: • build
• developer
discussion_id_link: —
bugzilla_pr: —
url: https://github.com/gcc-mirror/gcc/commit/d06b04d90ca5dc572ecf49fc3676eb21e872ae14
date: 2026-07-09T00:00:00.000Z

GCC has removed the CONSTEXPR macro, which was a workaround for older compilers lacking C++ constexpr keyword support. As GCC now requires C++14 mode for building, all compilers used for development must support constexpr, making the macro obsolete. This change simplifies the codebase by removing the macro and its uses across various files.