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@jwillemsen jwillemsen commented Aug 6, 2025

Summary by CodeRabbit

  • New Features

    • Added support for parallel compilation by introducing new variables and flags.
    • Build process now automatically creates required directories if they do not exist.
  • Improvements

    • Enhanced build targets to explicitly depend on output and intermediate directories.
    • Cleaned up build output by removing silent command prefixes for directory creation.

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coderabbitai bot commented Aug 6, 2025

Walkthrough

The changes introduce conditional support for parallel compilation by adding new variables and logic to handle parallel flags and processor count. Directory creation for build outputs is made explicit via dependencies and rules. Silent command prefixes are removed from directory creation steps, and compilation rules are updated to accommodate parallel builds, especially for .cpp files.

Changes

Cohort / File(s) Change Summary
Parallel Compilation Support
templates/bmake.mpd, templates/bmakecommon.mpt
Introduced PARALLEL_CFLAGS and parallel_flags variables to support parallel compilation, with logic to conditionally use these flags and processor count in build rules.
Directory Creation & Build Rule Refinement
templates/bmake.mpd
Added explicit dependencies and rules for creating $(INTERMEDIATE) and $(OUTPUTDIR) directories. Modified build target and compilation rules to depend on these directories and removed silent directory creation command prefixes.
Compilation Rule Adjustments
templates/bmake.mpd
Updated .cpp compilation to use parallel flags when available and changed invocation syntax. Adjusted other C++ source and resource compilation rules to clean up directory creation commands and improve consistency.

Sequence Diagram(s)

sequenceDiagram
    participant Dev as Developer
    participant Make as Makefile
    participant Compiler as Compiler

    Dev->>Make: Invoke build target
    Make->>Make: Check if $(INTERMEDIATE), $(OUTPUTDIR) exist
    alt Directories missing
        Make->>Make: Create missing directories
    end
    Make->>Compiler: For each .cpp file, check for PARALLEL_CFLAGS
    alt PARALLEL_CFLAGS defined
        Make->>Compiler: Compile with parallel flags & output dir
    else
        Make->>Compiler: Compile with standard flags
    end
    Make->>Make: Link objects/resources to produce output
Loading

Estimated code review effort

🎯 3 (Moderate) | ⏱️ ~15 minutes

Poem

In the meadow of code, where the compilers hop,
Rabbits cheer for parallel builds that never stop!
Directories sprout, no silence in sight,
Each flag and rule set just right.
With every swift compile, we leap ahead—
Hopping faster, our carrots well-spread! 🥕

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Actionable comments posted: 1

📜 Review details

Configuration used: CodeRabbit UI
Review profile: CHILL
Plan: Pro

📥 Commits

Reviewing files that changed from the base of the PR and between b085809 and 46be4ef.

📒 Files selected for processing (2)
  • templates/bmake.mpd (7 hunks)
  • templates/bmakecommon.mpt (1 hunks)
⏰ Context from checks skipped due to timeout of 90000ms. You can increase the timeout in your CodeRabbit configuration to a maximum of 15 minutes (900000ms). (8)
  • GitHub Check: VS2022Release32
  • GitHub Check: VS2022Debug64
  • GitHub Check: windows-2022 vs2022
  • GitHub Check: ubuntu-22.04 g++-12
  • GitHub Check: macos-14-C++17
  • GitHub Check: macos-13-C++17
  • GitHub Check: ubuntu-24.04 g++-10
  • GitHub Check: Codacy Static Code Analysis
🔇 Additional comments (3)
templates/bmakecommon.mpt (1)

143-143: LGTM! Parallel compilation flag appropriately added for bcc64x.

The --jobs flag with processor count is correctly configured for the clang15-based bcc64x compiler.

templates/bmake.mpd (2)

226-226: Good improvement: Explicit directory dependencies added to build targets.

Adding $(INTERMEDIATE) and $(OUTPUTDIR) as dependencies ensures directories are created before building, preventing potential build failures.

Also applies to: 240-240, 255-255


102-104: Verify --jobs=0 behavior in bcc64x
We’ve defaulted MPC_NUMBER_OF_PROCESSORS to 0, which generates --jobs=0 in the compiler flags. Local searches didn’t reveal how Borland’s bcc64x treats a zero value (no parallelism, unlimited threads, or an error). Please confirm the intended semantics and, if necessary, adjust the default (for example, use 1 for sequential builds) or add logic to detect the actual CPU count.

Affected locations:
• templates/bmake.mpd lines 102–104

!ifndef MPC_NUMBER_OF_PROCESSORS
MPC_NUMBER_OF_PROCESSORS = 0
!endif

• templates/bmakecommon.mpt line 143

parallel_flags = --jobs=$(MPC_NUMBER_OF_PROCESSORS)

@jwillemsen jwillemsen merged commit b061a4b into DOCGroup:master Aug 6, 2025
12 checks passed
@jwillemsen jwillemsen deleted the jwi-bcc64xparallel branch August 6, 2025 17:44
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