58 lines
2.4 KiB
Markdown
58 lines
2.4 KiB
Markdown
# Critical Blocker: ARM64 NIP Static Build
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## Status: LINK PHASE FAILING
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### Root Cause Analysis
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The `nim c` command compiles all source files to ARM64 object files successfully, but the **final link step is silently failing**.
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**Evidence:**
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1. All `.c` → `.o` compilation succeeds (ARM64 object files created in `/tmp/nip-arm64-cache/`)
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2. Linker command executes but **lacks `-o` flag specifying output path**
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3. Build returns exit code 0 (success) but no binary produced
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4. `-o:build/arm64/nip` argument to `nim c` is being ignored or not passed to linker
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### Linker Command (from diagnostic output):
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```bash
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aarch64-linux-gnu-gcc [hundreds of .o files] \
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-pthread -lm -lrt \
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-L/path/to/zstd-1.5.5/lib \
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-L/path/to/libressl-3.8.2/ssl/.libs \
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-L/path/to/libressl-3.8.2/crypto/.libs \
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-L/path/to/libressl-3.8.2/tls/.libs \
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-static -lssl -lcrypto -ltls -lzstd -lpthread -ldl -lm -lresolv \
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-Wl,-O1 -Wl,--sort-common -Wl,--as-needed -Wl,-z,relro -Wl,-z,now -Wl,-z,pack-relative-relocs
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```
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**MISSING:** `-o /path/to/output/binary`
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### Attempted Solutions
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1. ✅ Built LibreSSL 3.8.2 static (16MB crypto + 3.5MB ssl + 550KB tls) for ARM64
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2. ✅ Built Zstd 1.5.5 static (1.2MB) for ARM64
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3. ✅ Created GCC wrapper to filter x86 flags (`-mpclmul`, etc.)
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4. ✅ Used `--dynlibOverride:ssl --dynlibOverride:crypto` to prevent dlopen()
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5. ❌ Multiple output path specifications (`-o:`, `--out:`) all ignored
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6. ❌ Force rebuild with `-f` - still no output
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7. ❌ Absolute paths - still no output
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### Hypothesis
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Nim's ARM64 cross-compilation may have a bug where the `-o` flag isn't being passed through to the final linker invocation when using `--gcc.linkerexe:aarch64-linux-gnu-gcc`.
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### Recommended Next Steps
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**Option A: Manual Link (Immediate)**
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1. Use the object files already compiled in `/tmp/nip-arm64-cache/`
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2. Manually invoke `aarch64-linux-gnu-gcc` with proper `-o` flag
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3. Create binary directly
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**Option B: Different Nim Output Strategy**
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1. Try `--compileOnly` to generate C code
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2. Use custom Makefile for linking phase
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3. Bypass Nim's linker invocation entirely
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**Option C: Investigate Nim Bug**
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1. Check if this is a known Nim cross-compilation issue
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2. Try older/newer Nim version
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3. Report bug to Nim if not known
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**Current Time Impact:** ~3 hours spent debugging LibreSSL/Zstd static linking - successfully resolved. ~1 hour on output path issue - unresolved.
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