From 4a266f60462e26884a39a09fb147c351368770ca Mon Sep 17 00:00:00 2001
From: Sebastian Kreutzer <SebastianKreutzer@gmx.net>
Date: Thu, 21 Aug 2025 15:49:27 +0200
Subject: [PATCH 1/3] [NFC] Refactor CGPatch CMake

---
 CMakeLists.txt               | 31 -------------------------------
 tools/CMakeLists.txt         | 17 +++++++++++++++++
 tools/cgpatch/CMakeLists.txt | 14 ++++++++++++--
 3 files changed, 29 insertions(+), 33 deletions(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index e43a59d2..c7867e80 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -110,25 +110,6 @@ if(METACG_BUILD_CGCOLLECTOR)
   add_subdirectory(cgcollector)
 endif()
 
-# Build CGPatch: cgpatch-pass, cgpatch-runtime, wrappers, tests
-option(
-  METACG_BUILD_CGPATCH
-  "On or off"
-  OFF
-)
-if(METACG_BUILD_CGPATCH)
-  if(NOT METACG_BUILD_GRAPH_TOOLS)
-    message(FATAL_ERROR "CGPatch requires to build with METACG_BUILD_GRAPH_TOOLS=ON")
-  endif()
-  if(${LLVM_PACKAGE_VERSION}
-     GREATER
-     14
-  )
-    add_subdirectory(tools/cgpatch/)
-  else()
-    message(STATUS "Skipping CGPatch: requires LLVM version 15 or higher")
-  endif()
-endif()
 # PIRA analyzer Should PGIS be built
 option(
   METACG_BUILD_PGIS
@@ -155,18 +136,6 @@ option(
   OFF
 )
 
-# Enable MPI for CGPatch
-option(
-  CGPATCH_USE_MPI
-  "On or Off"
-  ON
-)
-
-if(METACG_BUILD_CGPATCH AND CGPATCH_USE_MPI)
-  find_package(MPI REQUIRED)
-  message(STATUS "MPI VERSION: ${MPI_C_VERSION}")
-endif()
-
 # Build MetaCG's Python interface
 option(
   METACG_BUILD_PYMETACG
diff --git a/tools/CMakeLists.txt b/tools/CMakeLists.txt
index 01f07f11..c7fb4a3c 100644
--- a/tools/CMakeLists.txt
+++ b/tools/CMakeLists.txt
@@ -1,3 +1,20 @@
+# Build CGPatch: cgpatch-pass, cgpatch-runtime, wrappers, tests
+option(
+  METACG_BUILD_CGPATCH
+  "On or off"
+  OFF
+)
+if(METACG_BUILD_CGPATCH)
+  if(${LLVM_PACKAGE_VERSION}
+     GREATER
+     14
+  )
+    add_subdirectory(cgpatch)
+  else()
+    message(WARNING "Skipping CGPatch: requires LLVM version 15 or higher")
+  endif()
+endif()
+
 add_subdirectory(cgmerge2)
 add_subdirectory(cgconvert)
 add_subdirectory(cgformat)
diff --git a/tools/cgpatch/CMakeLists.txt b/tools/cgpatch/CMakeLists.txt
index 36232b49..ed821f43 100644
--- a/tools/cgpatch/CMakeLists.txt
+++ b/tools/cgpatch/CMakeLists.txt
@@ -1,7 +1,17 @@
-project(CGPatch)
-
 include(GNUInstallDirs)
 
+# Enable MPI for CGPatch
+option(
+  CGPATCH_USE_MPI
+  "On or Off"
+  ON
+)
+
+if(CGPATCH_USE_MPI)
+  find_package(MPI REQUIRED)
+  message(STATUS "MPI VERSION: ${MPI_C_VERSION}")
+endif()
+
 # LLVM
 option(
   USE_FNO_RTTI

From 5737d7625e88df44fd3c2eb8150f1f2637e3fb5e Mon Sep 17 00:00:00 2001
From: Sebastian Kreutzer <SebastianKreutzer@gmx.net>
Date: Thu, 21 Aug 2025 16:04:20 +0200
Subject: [PATCH 2/3] Add MPI include directories to CGPatch runtime

---
 tools/cgpatch/CMakeLists.txt | 1 +
 1 file changed, 1 insertion(+)

diff --git a/tools/cgpatch/CMakeLists.txt b/tools/cgpatch/CMakeLists.txt
index ed821f43..9b1962b5 100644
--- a/tools/cgpatch/CMakeLists.txt
+++ b/tools/cgpatch/CMakeLists.txt
@@ -43,6 +43,7 @@ foreach(tgt cgpatch-call-analysis cgpatch-inst-pass)
 endforeach()
 
 if(CGPATCH_USE_MPI)
+  target_include_directories(cgpatch-runtime PRIVATE ${MPI_C_INCLUDE_DIRS})
   target_compile_definitions(cgpatch-runtime PRIVATE USE_MPI=1)
 endif()
 

From f80a3a0769524b273d755820edcad7951ca6f03c Mon Sep 17 00:00:00 2001
From: "silas.martens" <silas.martens@stud.tu-darmstadt.de>
Date: Mon, 1 Sep 2025 21:38:50 +0200
Subject: [PATCH 3/3] Fix integration tests

---
 .../test/integration/CGPIntegrationRunner.sh.in   | 15 +++++++++++----
 1 file changed, 11 insertions(+), 4 deletions(-)

diff --git a/tools/cgpatch/test/integration/CGPIntegrationRunner.sh.in b/tools/cgpatch/test/integration/CGPIntegrationRunner.sh.in
index baa8f6f7..2049fb51 100755
--- a/tools/cgpatch/test/integration/CGPIntegrationRunner.sh.in
+++ b/tools/cgpatch/test/integration/CGPIntegrationRunner.sh.in
@@ -53,6 +53,13 @@ cgmerge2Exe="$buildDir/tools/cgmerge2/cgmerge2"
 outputDir=$buildDir/tools/cgpatch/test/integration
 
 
+if [ "$CGPATCH_USE_MPI" == "ON" ]; then
+    compiler=mpicxx
+else
+    compiler=clang++
+fi
+
+
 if [ ! -d "${logDir}" ]; then
     mkdir "${logDir}"
 fi
@@ -71,14 +78,14 @@ function build_and_run_mpi_testcase {
     local testDir="$3"
     local testExe="$outputDir/${testName}.out"
     local testPG="$outputDir/${testName}.pg"
-    local testGT="$test_root/input/mpi/{testName}.gtpg"
+    local testGT="$test_root/input/mpi/${testName}.gtpg"
     local testMCG="$outputDir/${testName}.mcg"
-    local testSCG="$test_root/input/general/${testName}.ipcg"
+    local testSCG="$test_root/input/mpi/${testName}.ipcg"
 
     export CGPATCH_CG_NAME="${testPG}"
 
     log "Compiling MPI testcase: $testSources"
-    $cgpatchExe mpicxx $testSources -o "$testExe" >> "$logFile"
+    $cgpatchExe $compiler $testSources -o "$testExe" >> "$logFile"
     if [ $? -ne 0 ]; then
         echo "Compilation failed for $testName"
         fails=$((fails + 1))
@@ -109,7 +116,7 @@ function build_and_run_regular_testcase {
     export CGPATCH_CG_NAME="${testPG}"
 
     log "Compiling regular testcase: $testSources"
-    $cgpatchExe clang++ $testSources -o "$testExe" >> "$logFile"
+    $cgpatchExe $compiler $testSources -o "$testExe" >> "$logFile"
     if [ $? -ne 0 ]; then
         echo "Compilation failed for $testName"
         fails=$((fails + 1))