dev-libs/rocm-comgr: fix clang include dir search

With two patches

1. rocm-comgr uses clang -print-resource-dir to find correct headers
   during cmake configuration.

2. comgr initializes the clang driver correctly, so no need to specify
   clang include dir.

Also this makes the original sed command invalid. Turn it into another
patch.

Signed-off-by: Yiyang Wu <xgreenlandforwyy@gmail.com>
Signed-off-by: Sam James <sam@gentoo.org>

4 files changed, 120 insertions, 4 deletions

diff --git a/dev-libs/rocm-comgr/files/0001-Find-CLANG_RESOURCE_DIR-using-clang-print-resource-d.patch b/dev-libs/rocm-comgr/files/0001-Find-CLANG_RESOURCE_DIR-using-clang-print-resource-d.patch
new file mode 100644
index 000000000000..a61d92794d51
--- /dev/null
+++ b/dev-libs/rocm-comgr/files/0001-Find-CLANG_RESOURCE_DIR-using-clang-print-resource-d.patch
@@ -0,0 +1,48 @@
+From 4c210fdf6943c0c40b5fe0f66800c7b9c7ca84d3 Mon Sep 17 00:00:00 2001
+From: Yiyang Wu <xgreenlandforwyy@gmail.com>
+Date: Tue, 14 Jun 2022 20:21:22 +0800
+Subject: [PATCH] Find CLANG_RESOURCE_DIR using clang -print-resource-dir
+
+Suggested-By: https://reviews.llvm.org/D49486
+Signed-off-by: Yiyang Wu <xgreenlandforwyy@gmail.com>
+---
+ lib/comgr/cmake/opencl_pch.cmake | 24 +++---------------------
+ 1 file changed, 3 insertions(+), 21 deletions(-)
+
+diff --git a/lib/comgr/cmake/opencl_pch.cmake b/lib/comgr/cmake/opencl_pch.cmake
+index 95311fc..71050c8 100644
+--- a/cmake/opencl_pch.cmake
++++ b/cmake/opencl_pch.cmake
+@@ -1,26 +1,8 @@
+ if(CMAKE_SOURCE_DIR STREQUAL CMAKE_CURRENT_SOURCE_DIR)
+   find_package(Clang REQUIRED CONFIG)
+-
+-  # FIXME: CLANG_CMAKE_DIR seems like the most stable way to find this, but
+-  # really there is no way to reliably discover this header.
+-  #
+-  # We effectively back up to the Clang output directory (for the case of a build
+-  # tree) or install prefix (for the case of an installed copy), and then search
+-  # for a file named opencl-c.h anywhere below that. We take the first result in
+-  # the case where there are multiple (e.g. if there is an installed copy nested
+-  # in a build directory). This is a bit imprecise, but it covers cases like MSVC
+-  # adding some additional configuration-specific subdirectories to the build
+-  # tree but not to an installed copy.
+-  file(GLOB_RECURSE OPENCL_C_H_LIST "${CLANG_CMAKE_DIR}/../../../*/opencl-c.h")
+-
+-  list(GET OPENCL_C_H_LIST 0 OPENCL_C_H)
+-
+-  if (NOT EXISTS "${OPENCL_C_H}" OR IS_DIRECTORY "${OPENCL_C_H}")
+-    message(FATAL_ERROR "Unable to locate opencl-c.h from the supplied Clang. The path '${CLANG_CMAKE_DIR}/../../../*' was searched.")
+-  endif()
+-else()
+-  get_target_property(clang_build_header_dir clang-resource-headers RUNTIME_OUTPUT_DIRECTORY)
+-  set(OPENCL_C_H "${clang_build_header_dir}/opencl-c.h")
++  execute_process(COMMAND "${CLANG_CMAKE_DIR}/../../../bin/clang" -print-resource-dir OUTPUT_VARIABLE CLANG_RESOURCE_DIR)
++  string(STRIP ${CLANG_RESOURCE_DIR} CLANG_RESOURCE_DIR)
++  set(OPENCL_C_H "${CLANG_RESOURCE_DIR}/include/opencl-c.h")
+ endif()
+ 
+ # Macro to create and install a custom target for generating PCH for given
+-- 
+2.39.0
+
diff --git a/dev-libs/rocm-comgr/files/0001-Specify-clang-exe-path-in-Driver-Creation.patch b/dev-libs/rocm-comgr/files/0001-Specify-clang-exe-path-in-Driver-Creation.patch
new file mode 100644
index 000000000000..a1ce8cae50b8
--- /dev/null
+++ b/dev-libs/rocm-comgr/files/0001-Specify-clang-exe-path-in-Driver-Creation.patch
@@ -0,0 +1,52 @@
+From e0fb8aca856eb61d2f774a0893e2243742eed341 Mon Sep 17 00:00:00 2001
+From: Yiyang Wu <xgreenlandforwyy@gmail.com>
+Date: Fri, 18 Nov 2022 15:41:53 +0800
+Subject: [PATCH] Specify clang exe path in Driver Creation
+
+By doing so, TheDriver can get the correct resource dir.
+
+Closes: #48
+Reference: #49
+---
+ lib/comgr/src/comgr-compiler.cpp | 11 +----------
+ 1 file changed, 1 insertion(+), 10 deletions(-)
+
+diff --git a/lib/comgr/src/comgr-compiler.cpp b/lib/comgr/src/comgr-compiler.cpp
+index 80849d4..67fe82b 100644
+--- a/src/comgr-compiler.cpp
++++ b/src/comgr-compiler.cpp
+@@ -660,7 +660,7 @@ AMDGPUCompiler::executeInProcessDriver(ArrayRef<const char *> Args) {
+   IntrusiveRefCntPtr<DiagnosticIDs> DiagID(new DiagnosticIDs);
+   DiagnosticsEngine Diags(DiagID, &*DiagOpts, DiagClient);
+   ProcessWarningOptions(Diags, *DiagOpts, /*ReportDiags=*/false);
+-  Driver TheDriver("", "", Diags);
++  Driver TheDriver((Twine(env::getLLVMPath()) + "/bin/clang").str(), "", Diags);
+   TheDriver.setTitle("AMDGPU Code Object Manager");
+   TheDriver.setCheckInputsExist(false);
+ 
+@@ -998,11 +998,6 @@ amd_comgr_status_t AMDGPUCompiler::addCompilationFlags() {
+   HIPIncludePath = (Twine(env::getHIPPath()) + "/include").str();
+   // HIP headers depend on hsa.h which is in ROCM_DIR/include.
+   ROCMIncludePath = (Twine(env::getROCMPath()) + "/include").str();
+-  ClangIncludePath =
+-      (Twine(env::getLLVMPath()) + "/lib/clang/" + CLANG_VERSION_STRING).str();
+-  ClangIncludePath2 = (Twine(env::getLLVMPath()) + "/lib/clang/" +
+-                       CLANG_VERSION_STRING + "/include")
+-                          .str();
+ 
+   Args.push_back("-x");
+ 
+@@ -1028,10 +1023,6 @@ amd_comgr_status_t AMDGPUCompiler::addCompilationFlags() {
+     Args.push_back(ROCMIncludePath.c_str());
+     Args.push_back("-isystem");
+     Args.push_back(HIPIncludePath.c_str());
+-    Args.push_back("-isystem");
+-    Args.push_back(ClangIncludePath.c_str());
+-    Args.push_back("-isystem");
+-    Args.push_back(ClangIncludePath2.c_str());
+     break;
+   default:
+     return AMD_COMGR_STATUS_ERROR_INVALID_ARGUMENT;
+-- 
+2.39.0
+
diff --git a/dev-libs/rocm-comgr/files/rocm-comgr-5.3.3-HIPIncludePath-not-needed.patch b/dev-libs/rocm-comgr/files/rocm-comgr-5.3.3-HIPIncludePath-not-needed.patch
new file mode 100644
index 000000000000..54b98726026f
--- /dev/null
+++ b/dev-libs/rocm-comgr/files/rocm-comgr-5.3.3-HIPIncludePath-not-needed.patch
@@ -0,0 +1,15 @@
+ROCM and HIPIncludePath is now /usr, which disturb the include order
+===================================================================
+--- comgr.orig/src/comgr-compiler.cpp
++++ comgr/src/comgr-compiler.cpp
+@@ -1010,10 +1010,6 @@ amd_comgr_status_t AMDGPUCompiler::addCo
+     Args.push_back("x86_64-unknown-linux-gnu");
+     Args.push_back("--cuda-device-only");
+     Args.push_back("-nogpulib");
+-    Args.push_back("-isystem");
+-    Args.push_back(ROCMIncludePath.c_str());
+-    Args.push_back("-isystem");
+-    Args.push_back(HIPIncludePath.c_str());
+     break;
+   default:
+     return AMD_COMGR_STATUS_ERROR_INVALID_ARGUMENT;
diff --git a/dev-libs/rocm-comgr/rocm-comgr-5.3.3.ebuild b/dev-libs/rocm-comgr/rocm-comgr-5.3.3-r1.ebuild
index 5a5aa22a9098..0215adeaba17 100644
--- a/dev-libs/rocm-comgr/rocm-comgr-5.3.3.ebuild
+++ b/dev-libs/rocm-comgr/rocm-comgr-5.3.3-r1.ebuild
@@ -1,4 +1,4 @@
-# Copyright 1999-2022 Gentoo Authors
+# Copyright 1999-2023 Gentoo Authors
 # Distributed under the terms of the GNU General Public License v2
 
 EAPI=8
@@ -18,10 +18,12 @@ else
 fi
 
 PATCHES=(
-	"${FILESDIR}/${PN}-5.1.3-Find-CLANG_RESOURCE_DIR.patch"
 	"${FILESDIR}/${PN}-5.1.3-clang-fix-include.patch"
 	"${FILESDIR}/${PN}-5.1.3-rocm-path.patch"
 	"${FILESDIR}/${PN}-5.1.3-llvm-15-remove-zlib-gnu"
+	"${FILESDIR}/0001-Specify-clang-exe-path-in-Driver-Creation.patch"
+	"${FILESDIR}/0001-Find-CLANG_RESOURCE_DIR-using-clang-print-resource-d.patch"
+	"${FILESDIR}/${PN}-5.3.3-HIPIncludePath-not-needed.patch"
 )
 
 DESCRIPTION="Radeon Open Compute Code Object Manager"
@@ -40,8 +42,6 @@ CMAKE_BUILD_TYPE=Release
 src_prepare() {
 	sed '/sys::path::append(HIPPath/s,"hip","",' -i src/comgr-env.cpp || die
 	sed "/return LLVMPath;/s,LLVMPath,llvm::SmallString<128>(\"$(get_llvm_prefix ${LLVM_MAX_SLOT})\")," -i src/comgr-env.cpp || die
-	sed '/Args.push_back(HIPIncludePath/,+1d' -i src/comgr-compiler.cpp || die
-	sed '/Args.push_back(ROCMIncludePath/,+1d' -i src/comgr-compiler.cpp || die # ROCM and HIPIncludePath is now /usr, which disturb the include order
 	eapply $(prefixify_ro "${FILESDIR}"/${PN}-5.0-rocm_path.patch)
 	cmake_src_prepare
 }
@@ -50,6 +50,7 @@ src_configure() {
 	local mycmakeargs=(
 		-DLLVM_DIR="$(get_llvm_prefix ${LLVM_MAX_SLOT})"
 		-DCMAKE_STRIP=""  # disable stripping defined at lib/comgr/CMakeLists.txt:58
+		-DBUILD_TESTING=$(usex test ON OFF)
 	)
 	cmake_src_configure
 }