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With CONFIG_EXECFUNCS_SYSTEM_SYMTAB, the make build generates exec_symtab.c from libc.csv, libm.csv and syscall.csv with the host tool mksymtab. CONFIG_LIBC_ELF_SYSTEM_SYMTAB does the same for elf_sys_symtab.c. The CMake build did neither, so a CMake configuration with one of these options did not link: binfmt_execsymtab.c: undefined reference to `g_symtab' Do the same in libs/libc/CMakeLists.txt: build mksymtab as a host tool, sort the three lists by name, generate the table with the configured array and count names, and add it to the C library. mksymtab runs in the build directory with relative names, so the output is the same as from the make build. Assisted-by: Claude Code:claude-opus-5-5 Signed-off-by: Marco Casaroli <marco.casaroli@gmail.com>
65 lines
2.6 KiB
CMake
65 lines
2.6 KiB
CMake
# ##############################################################################
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# libs/libc/CMakeLists.txt
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#
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# SPDX-License-Identifier: Apache-2.0
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#
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# Licensed to the Apache Software Foundation (ASF) under one or more contributor
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# license agreements. See the NOTICE file distributed with this work for
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# additional information regarding copyright ownership. The ASF licenses this
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# file to you under the Apache License, Version 2.0 (the "License"); you may not
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# use this file except in compliance with the License. You may obtain a copy of
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# the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations under
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# the License.
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#
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# ##############################################################################
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nuttx_add_kernel_library(c SPLIT)
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nuttx_add_subdirectory()
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target_include_directories(c PRIVATE ${CMAKE_CURRENT_LIST_DIR})
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# Generate the system symbol tables from the C library, math library and system
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# call lists, as libs/libc/Makefile does. The lists are sorted by name.
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if(CONFIG_EXECFUNCS_SYSTEM_SYMTAB OR CONFIG_LIBC_ELF_SYSTEM_SYMTAB)
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nuttx_build_host_target(mksymtab ${NUTTX_DIR}/tools/mksymtab.c)
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set(SYMTAB_CSVS
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${CMAKE_CURRENT_LIST_DIR}/libc.csv ${NUTTX_DIR}/libs/libm/libm.csv
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${NUTTX_DIR}/syscall/syscall.csv)
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set(SYMTAB_CSV ${CMAKE_CURRENT_BINARY_DIR}/system_symtab.csv)
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add_custom_command(
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OUTPUT ${SYMTAB_CSV}
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COMMAND cat ${SYMTAB_CSVS} | LC_ALL=C sort > ${SYMTAB_CSV}
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DEPENDS ${SYMTAB_CSVS})
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if(CONFIG_EXECFUNCS_SYSTEM_SYMTAB)
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add_custom_command(
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OUTPUT ${CMAKE_CURRENT_BINARY_DIR}/exec_symtab.c
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COMMAND
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${NUTTX_BINARY_DIR}/bin_host/mksymtab system_symtab.csv exec_symtab.c
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${CONFIG_EXECFUNCS_SYMTAB_ARRAY} ${CONFIG_EXECFUNCS_NSYMBOLS_VAR}
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WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}
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DEPENDS mksymtab ${SYMTAB_CSV})
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target_sources(c PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/exec_symtab.c)
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endif()
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if(CONFIG_LIBC_ELF_SYSTEM_SYMTAB)
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add_custom_command(
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OUTPUT ${CMAKE_CURRENT_BINARY_DIR}/elf_sys_symtab.c
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COMMAND
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${NUTTX_BINARY_DIR}/bin_host/mksymtab system_symtab.csv elf_sys_symtab.c
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${CONFIG_LIBC_ELF_SYMTAB_ARRAY} ${CONFIG_LIBC_ELF_NSYMBOLS_VAR}
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WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}
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DEPENDS mksymtab ${SYMTAB_CSV})
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target_sources(c PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/elf_sys_symtab.c)
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endif()
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endif()
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