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Allow CMake to generate query_config.c

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This one was trickier for two reasons:

1. It's used from another directory, see
https://gitlab.kitware.com/cmake/community/-/wikis/FAQ#how-can-i-add-a-dependency-to-a-source-file-which-is-generated-in-a-subdirectory

2. The C file being generated after CMake is run means CMake can't
automatically scan for included headers and do its usual magic, so we
need to declare the dependency and more importantly the include path.

Signed-off-by: Manuel Pégourié-Gonnard <manuel.pegourie-gonnard@arm.com>
This commit is contained in:
Manuel Pégourié-Gonnard 2021-05-14 10:07:33 +02:00 committed by David Horstmann
parent 3a8413d316
commit 86cfa6c27f
2 changed files with 42 additions and 2 deletions
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17
programs/ssl/CMakeLists.txt
View file

@ -18,17 +18,32 @@ set(executables
ssl_server2
)
# Inform CMake the the following file will be generated as part of the build
# process, so it doesn't complain that it doesn't exist yet. Starting from
# CMake 3.20, this will no longer be necessary as CMake will automatically
# propagate this information accross the tree, for now it's only visible
# inside the same directory, so we need to propagate manually.
set_source_files_properties(
${CMAKE_CURRENT_BINARY_DIR}/../test/query_config.c
PROPERTIES GENERATED TRUE)
foreach(exe IN LISTS executables)
set(extra_sources "")
if(exe STREQUAL "ssl_client2" OR exe STREQUAL "ssl_server2")
list(APPEND extra_sources
ssl_test_lib.c
${CMAKE_CURRENT_SOURCE_DIR}/../test/query_config.c)
${CMAKE_CURRENT_SOURCE_DIR}/../test/query_config.h
${CMAKE_CURRENT_BINARY_DIR}/../test/query_config.c)
endif()
add_executable(${exe} ${exe}.c $<TARGET_OBJECTS:mbedtls_test>
${extra_sources})
target_link_libraries(${exe} ${libs})
target_include_directories(${exe} PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/../../tests/include)
if(exe STREQUAL "ssl_client2" OR exe STREQUAL "ssl_server2")
add_dependencies(${exe} generate_query_config_c)
target_include_directories(${exe}
PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/../test)
endif()
endforeach()
if(THREADS_FOUND)

27
programs/test/CMakeLists.txt
View file

@ -27,15 +27,40 @@ if(TEST_CPP)
target_link_libraries(cpp_dummy_build ${mbedcrypto_target})
endif()
find_package(Perl REQUIRED)
add_custom_command(
OUTPUT
${CMAKE_CURRENT_BINARY_DIR}/query_config.c
COMMAND
${PERL}
${CMAKE_CURRENT_SOURCE_DIR}/../../scripts/generate_query_config.pl
${CMAKE_CURRENT_SOURCE_DIR}/../../include/mbedtls/mbedtls_config.h
${CMAKE_CURRENT_SOURCE_DIR}/../../scripts/data_files/query_config.fmt
${CMAKE_CURRENT_BINARY_DIR}/query_config.c
DEPENDS
${CMAKE_CURRENT_SOURCE_DIR}/../../scripts/generate_query_config.pl
${CMAKE_CURRENT_SOURCE_DIR}/../../include/mbedtls/mbedtls_config.h
${CMAKE_CURRENT_SOURCE_DIR}/../../scripts/data_files/query_config.fmt
)
# this file will also be used in anoter directory, so create a target, see
# https://gitlab.kitware.com/cmake/community/-/wikis/FAQ#how-can-i-add-a-dependency-to-a-source-file-which-is-generated-in-a-subdirectory
add_custom_target(generate_query_config_c
DEPENDS ${CMAKE_CURRENT_BINARY_DIR}/query_config.c)
foreach(exe IN LISTS executables_libs executables_mbedcrypto)
set(extra_sources "")
if(exe STREQUAL "query_compile_time_config")
list(APPEND extra_sources
${CMAKE_CURRENT_SOURCE_DIR}/query_config.c)
${CMAKE_CURRENT_SOURCE_DIR}/query_config.h
${CMAKE_CURRENT_BINARY_DIR}/query_config.c)
endif()
add_executable(${exe} ${exe}.c $<TARGET_OBJECTS:mbedtls_test>
${extra_sources})
target_include_directories(${exe} PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/../../tests/include)
if(exe STREQUAL "query_compile_time_config")
target_include_directories(${exe} PRIVATE ${CMAKE_CURRENT_SOURCE_DIR})
endif()
# This emulates "if ( ... IN_LIST ... )" which becomes available in CMake 3.3
list(FIND executables_libs ${exe} exe_index)