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[GH-ISSUE #1994] Document the macOS Ghidra decompiler build (12.1.4 ships none) #664

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opened 2026-10-15 18:27:05 +00:00 by bsakaguchi · 3 comments

bsakaguchi commented

2026-10-15 18:27:05 +00:00

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Originally created by @EDMND-SRC on GitHub (Oct 11, 2026).
Original GitHub issue: https://github.com/morluto/rea/issues/1994

Observed on REA 6.4.0, macOS 14.8.9 x64, Ghidra 12.1.4 PUBLIC, Command Line Tools 16.2.

The release tree Ghidra/Features/Decompiler/os contains only linux_x86_64 and win_x86_64, so doctor reports native_decompiler missing and the provider stays unavailable. REA correctly refuses to build it.

A stock toolchain build works: make ghidra_opt in Ghidra/Features/Decompiler/src/decompile/cpp (about six minutes, bison plus clang present), then copy ghidra_opt to Ghidra/Features/Decompiler/os/mac_x86_64/decompile with executable bit. Doctor then passes every check and live decompilation returns Evidence.

Request: add this recipe to the Ghidra install docs so macOS users are not stuck with a healthy looking install that can never become available.

Originally created by @EDMND-SRC on GitHub (Oct 11, 2026). Original GitHub issue: https://github.com/morluto/rea/issues/1994 Observed on REA 6.4.0, macOS 14.8.9 x64, Ghidra 12.1.4 PUBLIC, Command Line Tools 16.2. The release tree Ghidra/Features/Decompiler/os contains only linux_x86_64 and win_x86_64, so doctor reports native_decompiler missing and the provider stays unavailable. REA correctly refuses to build it. A stock toolchain build works: make ghidra_opt in Ghidra/Features/Decompiler/src/decompile/cpp (about six minutes, bison plus clang present), then copy ghidra_opt to Ghidra/Features/Decompiler/os/mac_x86_64/decompile with executable bit. Doctor then passes every check and live decompilation returns Evidence. Request: add this recipe to the Ghidra install docs so macOS users are not stuck with a healthy looking install that can never become available.

bsakaguchi

2026-10-15 18:27:05 +00:00

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bsakaguchi commented

2026-10-15 18:27:06 +00:00

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@Ghost-Kang commented on GitHub (Oct 12, 2026):

This looks resolved on main. docs/installation.md now has a "Missing macOS native decompiler" subsection under "Ghidra", added in b5ededd0f. It covers:

the native_decompiler doctor symptom
prerequisites (Command Line Tools, make, bison)
make ghidra_opt in Ghidra/Features/Decompiler/src/decompile/cpp
installing the result to os/mac_x86_64/decompile with mode 755
re-running rea doctor --json

It also notes that REA does not build the component.

One remaining gap: the recipe is x64-only, because the Ghidra 12.1.4 Makefile pins -arch x86_64 on Darwin. REA expects mac_arm_64 on Apple Silicon (src/ghidra/GhidraInstallation.ts), but I haven't verified an arm64 build, so I'm not proposing a recipe for it.

If that matches your intent, this issue can probably be closed.

@Ghost-Kang commented on GitHub (Oct 12, 2026): This looks resolved on `main`. `docs/installation.md` now has a "Missing macOS native decompiler" subsection under "Ghidra", added in b5ededd0f. It covers: - the `native_decompiler` doctor symptom - prerequisites (Command Line Tools, `make`, `bison`) - `make ghidra_opt` in `Ghidra/Features/Decompiler/src/decompile/cpp` - installing the result to `os/mac_x86_64/decompile` with mode 755 - re-running `rea doctor --json` It also notes that REA does not build the component. One remaining gap: the recipe is x64-only, because the Ghidra 12.1.4 Makefile pins `-arch x86_64` on Darwin. REA expects `mac_arm_64` on Apple Silicon (`src/ghidra/GhidraInstallation.ts`), but I haven't verified an arm64 build, so I'm not proposing a recipe for it. If that matches your intent, this issue can probably be closed.

bsakaguchi commented

2026-10-15 18:27:06 +00:00

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@nKOxxx commented on GitHub (Oct 12, 2026):

The arm64 recipe gap called out in the merged installation note is now covered by a verified PR: #2112. It documents make ghidra_opt ARCH_TYPE="-arch arm64" OSDIR=mac_arm_64 (no Makefile edits, no Rosetta) and records the end-to-end verification on macOS 15.6 arm64: arm64 Mach-O binary, rea doctor native_decompiler healthy, and a live rea decompile through headless Ghidra 12.1.4.

@nKOxxx commented on GitHub (Oct 12, 2026): The arm64 recipe gap called out in the merged installation note is now covered by a verified PR: #2112. It documents `make ghidra_opt ARCH_TYPE="-arch arm64" OSDIR=mac_arm_64` (no Makefile edits, no Rosetta) and records the end-to-end verification on macOS 15.6 arm64: arm64 Mach-O binary, `rea doctor` `native_decompiler` healthy, and a live `rea decompile` through headless Ghidra 12.1.4.

bsakaguchi commented

2026-10-15 18:27:06 +00:00

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@EDMND-SRC commented on GitHub (Oct 12, 2026):

Closing this issue now, since covered by PR #2112. Thanks @nKOxxx

@EDMND-SRC commented on GitHub (Oct 12, 2026): Closing this issue now, since covered by PR #2112. Thanks @nKOxxx

bsakaguchi referenced this issue

2026-10-16 21:14:53 +00:00

[PR #664] [MERGED] docs: align MCP discovery and skill guidance with the stable catalog #2147

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