clang: pass PYTHON_EXECUTABLE to target as well

Also make sure that we pass this value on to an internal native build that
tries to detect python while cross-compiling.

Signed-off-by: Anuj Mittal <anuj.mittal@intel.com>

3 files changed, 27 insertions, 0 deletions

diff --git a/recipes-devtools/clang/clang/0001-Pass-PYTHON_EXECUTABLE-when-cross-compiling-for-nati.patch b/recipes-devtools/clang/clang/0001-Pass-PYTHON_EXECUTABLE-when-cross-compiling-for-nati.patch
new file mode 100644
index 0000000..ab3c837
--- /dev/null
+++ b/recipes-devtools/clang/clang/0001-Pass-PYTHON_EXECUTABLE-when-cross-compiling-for-nati.patch
@@ -0,0 +1,25 @@
+From 112a89e845333ae98e9802c5ac5a4761032e08de Mon Sep 17 00:00:00 2001
+From: Anuj Mittal <anuj.mittal@intel.com>
+Date: Wed, 18 Sep 2019 12:56:58 +0800
+Subject: [PATCH] Pass PYTHON_EXECUTABLE when cross compiling for native build
+
+Signed-off-by: Anuj Mittal <anuj.mittal@intel.com>
+---
+ llvm/cmake/modules/CrossCompile.cmake | 1 +
+ 1 file changed, 1 insertion(+)
+
+diff --git a/llvm/cmake/modules/CrossCompile.cmake b/llvm/cmake/modules/CrossCompile.cmake
+index d6b4161..7fae108 100644
+--- a/llvm/cmake/modules/CrossCompile.cmake
++++ b/llvm/cmake/modules/CrossCompile.cmake
+@@ -62,6 +62,7 @@ function(llvm_create_cross_target_internal target_name toolchain buildtype)
+         -DLLVM_ENABLE_PROJECTS="${llvm_enable_projects_arg}"
+         -DLLVM_EXTERNAL_PROJECTS="${llvm_external_projects_arg}"
+         -DLLVM_TEMPORARILY_ALLOW_OLD_TOOLCHAIN="${LLVM_TEMPORARILY_ALLOW_OLD_TOOLCHAIN}"
++        -DPYTHON_EXECUTABLE="${PYTHON_EXECUTABLE}"
+         ${build_type_flags} ${linker_flag} ${external_clang_dir}
+     WORKING_DIRECTORY ${LLVM_${target_name}_BUILD}
+     DEPENDS CREATE_LLVM_${target_name}
+-- 
+2.7.4
+
diff --git a/recipes-devtools/clang/clang_git.bb b/recipes-devtools/clang/clang_git.bb
index 49691d5..c186cc7 100644
--- a/recipes-devtools/clang/clang_git.bb
+++ b/recipes-devtools/clang/clang_git.bb
@@ -147,6 +147,7 @@ EXTRA_OECMAKE_append_class-target = "\
                   -DPYTHON_LIBRARY=${STAGING_LIBDIR}/lib${PYTHON_DIR}${PYTHON_ABI}.so \
                   -DPYTHON_INCLUDE_DIR=${STAGING_INCDIR}/${PYTHON_DIR}${PYTHON_ABI} \
                   -DLLVM_LIBDIR_SUFFIX=${@d.getVar('baselib').replace('lib', '')} \
+                  -DPYTHON_EXECUTABLE='${PYTHON}' \
 "
 
 DEPENDS = "binutils zlib libffi libedit libedit-native libxml2 libxml2-native ninja-native swig-native"
diff --git a/recipes-devtools/clang/common.inc b/recipes-devtools/clang/common.inc
index ceb9daa..955c3cc 100644
--- a/recipes-devtools/clang/common.inc
+++ b/recipes-devtools/clang/common.inc
@@ -30,6 +30,7 @@ SRC_URI = "\
     file://0020-clang-default-to-lp64d-ABI-and-rv64gc-ISA.patch \
     file://0022-Driver-Prioritize-SYSROOT-usr-include-over-RESOURCE_.patch \
     file://0023-RISCV-Add-support-for-floating-point-registers-in-in.patch \
+    file://0001-Pass-PYTHON_EXECUTABLE-when-cross-compiling-for-nati.patch \
 "
 
 # Fallback to no-PIE if not set