From 26e7ba7a3fbef26a1c53b0ee9507210609e3efd4 Mon Sep 17 00:00:00 2001
From: Roy Shilkrot <roy.shil@gmail.com>
Date: Mon, 25 Nov 2024 12:31:57 -0500
Subject: [PATCH] Enable ccache support in CMake build scripts for improved
 build performance

---
 .github/workflows/build-project.yaml | 4 ++--
 cmake/BuildCTranslate2.cmake         | 7 +++++++
 cmake/BuildSentencepiece.cmake       | 7 +++++++
 cmake/BuildWhispercpp.cmake          | 7 +++++++
 4 files changed, 23 insertions(+), 2 deletions(-)

diff --git a/.github/workflows/build-project.yaml b/.github/workflows/build-project.yaml
index cbe9fa6..91cabe1 100644
--- a/.github/workflows/build-project.yaml
+++ b/.github/workflows/build-project.yaml
@@ -115,9 +115,9 @@ jobs:
         id: ccache-cache
         with:
           path: ${{ github.workspace }}/.ccache
-          key: ${{ runner.os }}-ccache-${{ needs.check-event.outputs.config }}
+          key: ${{ runner.os }}-ccache-${{ needs.check-event.outputs.config }}-${{ matrix.architecture }}
           restore-keys: |
-            ${{ runner.os }}-ccache-
+            ${{ runner.os }}-ccache-${{ matrix.architecture }}-
 
       - name: Set Up Codesigning 🔑
         uses: ./.github/actions/setup-macos-codesigning
diff --git a/cmake/BuildCTranslate2.cmake b/cmake/BuildCTranslate2.cmake
index 0d60561..4c21c7f 100644
--- a/cmake/BuildCTranslate2.cmake
+++ b/cmake/BuildCTranslate2.cmake
@@ -50,6 +50,13 @@ elseif(WIN32)
   file(GLOB CT2_DLLS ${ctranslate2_fetch_SOURCE_DIR}/bin/*.dll)
   install(FILES ${CT2_DLLS} DESTINATION "obs-plugins/64bit")
 else()
+  # Enable ccache if available
+  find_program(CCACHE_PROGRAM ccache)
+  if(CCACHE_PROGRAM)
+    set(CMAKE_C_COMPILER_LAUNCHER ${CCACHE_PROGRAM})
+    set(CMAKE_CXX_COMPILER_LAUNCHER ${CCACHE_PROGRAM})
+  endif()
+
   # build cpu_features from source
   set(CPU_FEATURES_VERSION "0.9.0")
   set(CPU_FEATURES_URL "https://github.com/google/cpu_features.git")
diff --git a/cmake/BuildSentencepiece.cmake b/cmake/BuildSentencepiece.cmake
index 024283e..4df4f6d 100644
--- a/cmake/BuildSentencepiece.cmake
+++ b/cmake/BuildSentencepiece.cmake
@@ -27,6 +27,13 @@ elseif(WIN32)
 
 else()
 
+  # Enable ccache if available
+  find_program(CCACHE_PROGRAM ccache)
+  if(CCACHE_PROGRAM)
+    set(CMAKE_C_COMPILER_LAUNCHER ${CCACHE_PROGRAM})
+    set(CMAKE_CXX_COMPILER_LAUNCHER ${CCACHE_PROGRAM})
+  endif()
+
   set(SP_URL
       "https://github.com/google/sentencepiece.git"
       CACHE STRING "URL of sentencepiece repository")
diff --git a/cmake/BuildWhispercpp.cmake b/cmake/BuildWhispercpp.cmake
index b51332e..5f1e628 100644
--- a/cmake/BuildWhispercpp.cmake
+++ b/cmake/BuildWhispercpp.cmake
@@ -102,6 +102,13 @@ elseif(WIN32)
   file(GLOB WHISPER_DLLS ${whispercpp_fetch_SOURCE_DIR}/bin/*.dll)
   install(FILES ${WHISPER_DLLS} DESTINATION "obs-plugins/64bit")
 else()
+  # Enable ccache if available
+  find_program(CCACHE_PROGRAM ccache)
+  if(CCACHE_PROGRAM)
+    set(CMAKE_C_COMPILER_LAUNCHER ${CCACHE_PROGRAM})
+    set(CMAKE_CXX_COMPILER_LAUNCHER ${CCACHE_PROGRAM})
+  endif()
+
   if(${CMAKE_BUILD_TYPE} STREQUAL Release OR ${CMAKE_BUILD_TYPE} STREQUAL RelWithDebInfo)
     set(Whispercpp_BUILD_TYPE Release)
   else()