/usr/share/gencpp/cmake/gencpp-extras.cmake is in python-gencpp 0.5.3-4.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 | # bin and template dir variables in installspace
set(GENCPP_BIN "/usr/lib/gencpp/gen_cpp.py")
set(GENCPP_TEMPLATE_DIR "${gencpp_DIR}/..")
# Generate .msg->.h for cpp
# The generated .h files should be added ALL_GEN_OUTPUT_FILES_cpp
macro(_generate_msg_cpp ARG_PKG ARG_MSG ARG_IFLAGS ARG_MSG_DEPS ARG_GEN_OUTPUT_DIR)
file(MAKE_DIRECTORY ${ARG_GEN_OUTPUT_DIR})
#Create input and output filenames
get_filename_component(MSG_NAME ${ARG_MSG} NAME)
get_filename_component(MSG_SHORT_NAME ${ARG_MSG} NAME_WE)
set(MSG_GENERATED_NAME ${MSG_SHORT_NAME}.h)
set(GEN_OUTPUT_FILE ${ARG_GEN_OUTPUT_DIR}/${MSG_GENERATED_NAME})
assert(CATKIN_ENV)
add_custom_command(OUTPUT ${GEN_OUTPUT_FILE}
DEPENDS ${GENCPP_BIN} ${ARG_MSG} ${ARG_MSG_DEPS} "${GENCPP_TEMPLATE_DIR}/msg.h.template" ${ARGN}
COMMAND ${CATKIN_ENV} ${PYTHON_EXECUTABLE} ${GENCPP_BIN} ${ARG_MSG}
${ARG_IFLAGS}
-p ${ARG_PKG}
-o ${ARG_GEN_OUTPUT_DIR}
-e ${GENCPP_TEMPLATE_DIR}
COMMENT "Generating C++ code from ${ARG_PKG}/${MSG_NAME}"
)
list(APPEND ALL_GEN_OUTPUT_FILES_cpp ${GEN_OUTPUT_FILE})
gencpp_append_include_dirs()
endmacro()
#gencpp uses the same program to generate srv and msg files, so call the same macro
macro(_generate_srv_cpp ARG_PKG ARG_SRV ARG_IFLAGS ARG_MSG_DEPS ARG_GEN_OUTPUT_DIR)
_generate_msg_cpp(${ARG_PKG} ${ARG_SRV} "${ARG_IFLAGS}" "${ARG_MSG_DEPS}" ${ARG_GEN_OUTPUT_DIR} "${GENCPP_TEMPLATE_DIR}/srv.h.template")
endmacro()
macro(_generate_module_cpp)
# the macros, they do nothing
endmacro()
set(gencpp_INSTALL_DIR include)
macro(gencpp_append_include_dirs)
if(NOT gencpp_APPENDED_INCLUDE_DIRS)
# make sure we can find generated messages and that they overlay all other includes
include_directories(BEFORE ${CATKIN_DEVEL_PREFIX}/${gencpp_INSTALL_DIR})
# pass the include directory to catkin_package()
list(APPEND ${PROJECT_NAME}_INCLUDE_DIRS ${CATKIN_DEVEL_PREFIX}/${gencpp_INSTALL_DIR})
set(gencpp_APPENDED_INCLUDE_DIRS TRUE)
endif()
endmacro()
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