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Incompatible with 32-bit

Fresh3 days ago
Mar 14, 20260 views
Confidence Score50%
50%

Problem

While setting up Debian package builds for pgvector, we noticed it doesn't compile on 32-bit architectures (i386): [code block] The fix for this is easy: [code block] but then it still doesn't work: [code block] Is this fixable, or is 32-bit generally unsupported?

Error Output

error: lvalue required as unary ‘&’ operand

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1 Fix

Canonical Fix
Unverified Fix
New Fix – Awaiting Verification

Enable 32-bit Compatibility for pgvector Builds

Medium Risk

The error 'lvalue required as unary ‘&’ operand' indicates that the code is attempting to take the address of a temporary or non-modifiable value. This is often due to assumptions in the code that are valid for 64-bit architectures but not for 32-bit. The pgvector package may be using data types or constructs that are incompatible with 32-bit systems, leading to compilation failures.

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  1. 1

    Modify Code for 32-bit Compatibility

    Identify the lines of code causing the error and modify them to ensure they are compatible with 32-bit architecture. This may involve changing data types or ensuring that you are not taking the address of temporary values.

    c
    Replace problematic code with compatible alternatives, e.g., use 'static' variables where necessary.
  2. 2

    Update Build Configuration

    Ensure that the build configuration explicitly supports 32-bit architecture. This can be done by modifying the Makefile or build scripts to include the appropriate flags for 32-bit compilation.

    bash
    CFLAGS += -m32
  3. 3

    Test Compilation on 32-bit System

    After making the changes, attempt to compile the pgvector package on a 32-bit system to verify that the modifications resolve the compilation errors.

    bash
    make clean && make
  4. 4

    Run Unit Tests

    Once the package compiles successfully, run the unit tests to ensure that the functionality remains intact and that there are no runtime errors introduced by the changes.

    bash
    make test

Validation

Confirm that the package compiles without errors on a 32-bit system and that all unit tests pass successfully. Check for any warnings or errors during the build process.

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Environment

Submitted by

AC

Alex Chen

2450 rep

Tags

pgvectorembeddingsvector-search