[OE-core] [PATCH V2] python3native, pythonnative: export PYTHON_LIBRARY and PYTHON_INCLUDE_DIR
Khem Raj
raj.khem at gmail.com
Wed Sep 4 18:49:28 UTC 2019
packages can use
find_package(PythonInterp REQUIRED)
find_package(PythonLibs REQUIRED)
while we control PYTHON pointing to native py3 the libs and include
directories will then point to build host version, which can result in
unexpected combination and if we are lucky we get errors if its quite
different e.g. py2 libs/includes and py3 executable
This variable can be then used to export PYTHON_LIBRARY and
PYTHON_INCLUDE_DIR so that above find_packages can work correctly
see [1] for how it happens in cmake
LLDB uses it see [2]
[1] https://github.com/Kitware/CMake/blob/master/Modules/FindPythonLibs.cmake
[2] https://github.com/llvm/llvm-project/blob/master/lldb/cmake/modules/LLDBConfig.cmake#L226
Signed-off-by: Khem Raj <raj.khem at gmail.com>
---
v2: Use PYTHON_DIR variable
meta/classes/python3native.bbclass | 8 ++++++++
meta/classes/pythonnative.bbclass | 8 ++++++++
2 files changed, 16 insertions(+)
diff --git a/meta/classes/python3native.bbclass b/meta/classes/python3native.bbclass
index a3acaf61bb..768302488b 100644
--- a/meta/classes/python3native.bbclass
+++ b/meta/classes/python3native.bbclass
@@ -9,6 +9,14 @@ DEPENDS_append = " python3-native "
export STAGING_INCDIR
export STAGING_LIBDIR
+# Packages can use
+# find_package(PythonInterp REQUIRED)
+# find_package(PythonLibs REQUIRED)
+# which ends up using libs/includes from build host
+# Therefore pre-empt that effort
+export PYTHON_LIBRARY="${STAGING_LIBDIR}/${PYTHON_DIR}"
+export PYTHON_INCLUDE_DIR="${STAGING_INCDIR}/${PYTHON_DIR}"
+
export _PYTHON_SYSCONFIGDATA_NAME="_sysconfigdata"
# suppress host user's site-packages dirs.
diff --git a/meta/classes/pythonnative.bbclass b/meta/classes/pythonnative.bbclass
index ae6600cd15..604423b80e 100644
--- a/meta/classes/pythonnative.bbclass
+++ b/meta/classes/pythonnative.bbclass
@@ -12,6 +12,14 @@ DEPENDS_append = " python-native "
export STAGING_INCDIR
export STAGING_LIBDIR
+# Packages can use
+# find_package(PythonInterp REQUIRED)
+# find_package(PythonLibs REQUIRED)
+# which ends up using libs/includes from build host
+# Therefore pre-empt that effort
+export PYTHON_LIBRARY="${STAGING_LIBDIR}/${PYTHON_DIR}"
+export PYTHON_INCLUDE_DIR="${STAGING_INCDIR}/${PYTHON_DIR}"
+
# suppress host user's site-packages dirs.
export PYTHONNOUSERSITE = "1"
--
2.23.0
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