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add_module: allow include as SYSTEM (#1416)

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pybind11 headers passed via the `pybind11_add_module` CMake
function can now be included as `SYSTEM` includes (`-isystem`).

This allows to set stricter (or experimental) warnings in
calling projects that might throw otherwise in headers
a user of pybind11 can not influence.
This commit is contained in:
Axel Huebl
2018-08-29 13:20:11 +02:00
committed by Wenzel Jakob
parent 3a94561c4d
commit 435dbdd114
2 changed files with 12 additions and 4 deletions
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10
tools/pybind11Tools.cmake
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@@ -110,10 +110,10 @@ endfunction()
# Build a Python extension module:
# pybind11_add_module(<name> [MODULE | SHARED] [EXCLUDE_FROM_ALL]
# [NO_EXTRAS] [THIN_LTO] source1 [source2 ...])
# [NO_EXTRAS] [SYSTEM] [THIN_LTO] source1 [source2 ...])
#
function(pybind11_add_module target_name)
set(options MODULE SHARED EXCLUDE_FROM_ALL NO_EXTRAS THIN_LTO)
set(options MODULE SHARED EXCLUDE_FROM_ALL NO_EXTRAS SYSTEM THIN_LTO)
cmake_parse_arguments(ARG "${options}" "" "" ${ARGN})
if(ARG_MODULE AND ARG_SHARED)
@@ -130,7 +130,11 @@ function(pybind11_add_module target_name)
add_library(${target_name} ${lib_type} ${exclude_from_all} ${ARG_UNPARSED_ARGUMENTS})
target_include_directories(${target_name}
if(ARG_SYSTEM)
set(inc_isystem SYSTEM)
endif()
target_include_directories(${target_name} ${inc_isystem}
PRIVATE ${PYBIND11_INCLUDE_DIR} # from project CMakeLists.txt
PRIVATE ${pybind11_INCLUDE_DIR} # from pybind11Config
PRIVATE ${PYTHON_INCLUDE_DIRS})