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build: Adds support for Clangs's toolchain compiler-rt

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This commit is contained in:
Alexey Gerenkov 2022-11-23 15:00:11 +03:00
parent 8846674e54
commit e9345bcced
18 changed files with 74 additions and 3 deletions
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5
CMakeLists.txt
View File

@ -224,6 +224,11 @@ endif()
if(CMAKE_C_COMPILER_ID MATCHES "Clang")
list(APPEND compile_options "-fno-use-cxa-atexit")
if(CONFIG_COMPILER_RT_LIB_GCCLIB)
list(APPEND link_options "-rtlib=libgcc")
elseif(CONFIG_COMPILER_RT_LIB_CLANGRT)
list(APPEND link_options "-rtlib=compiler-rt")
endif()
endif()
# For the transition period from 32-bit time_t to 64-bit time_t,

33
Kconfig
View File

@ -19,6 +19,18 @@ mainmenu "Espressif IoT Development Framework Configuration"
bool
default y if "$(IDF_CI_BUILD)" = "y" || "$(IDF_CI_BUILD)" = 1
config IDF_TOOLCHAIN
# This option records the IDF target when sdkconfig is generated the first time.
# It is not updated if environment variable $IDF_TOOLCHAIN changes later, and
# the build system is responsible for detecting the mismatch between
# CONFIG_IDF_TOOLCHAIN and $IDF_TOOLCHAIN.
string
default "$IDF_TOOLCHAIN"
config IDF_TOOLCHAIN_CLANG
bool
default "y" if IDF_TOOLCHAIN="clang"
config IDF_TARGET_ARCH_RISCV
bool
default "n"
@ -493,6 +505,27 @@ mainmenu "Espressif IoT Development Framework Configuration"
If enabled, RTL files will be produced during compilation. These files
can be used by other tools, for example to calculate call graphs.
choice COMPILER_RT_LIB
prompt "Compiler runtime library"
default COMPILER_RT_LIB_CLANGRT if IDF_TOOLCHAIN_CLANG
default COMPILER_RT_LIB_GCCLIB
help
Select runtime library to be used by compiler.
- GCC toolchain supports libgcc only.
- Clang allows to choose between libgcc or libclang_rt.
config COMPILER_RT_LIB_GCCLIB
bool "libgcc"
config COMPILER_RT_LIB_CLANGRT
depends on IDF_TOOLCHAIN_CLANG
bool "libclang_rt"
endchoice
config COMPILER_RT_LIB_NAME
string
default "clang_rt.builtins" if COMPILER_RT_LIB_CLANGRT
default "gcc" if COMPILER_RT_LIB_GCCLIB
endmenu # Compiler Options
menu "Component config"

2
components/bootloader/subproject/main/ld/esp32/bootloader.ld
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@ -42,7 +42,9 @@ SECTIONS
*(.stub .gnu.warning .gnu.linkonce.literal.* .gnu.linkonce.t.*.literal .gnu.linkonce.t.*)
*(.iram1 .iram1.*) /* catch stray IRAM_ATTR */
*liblog.a:(.literal .text .literal.* .text.*)
/* we use either libgcc or compiler-rt, so put similar entries for them here */
*libgcc.a:(.literal .text .literal.* .text.*)
*libclang_rt.builtins.a:(.literal .text .literal.* .text.*)
*libbootloader_support.a:bootloader_clock_loader.*(.literal .text .literal.* .text.*)
*libbootloader_support.a:bootloader_common_loader.*(.literal .text .literal.* .text.*)
*libbootloader_support.a:bootloader_flash.*(.literal .text .literal.* .text.*)

2
components/bootloader/subproject/main/ld/esp32c2/bootloader.ld
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@ -63,7 +63,9 @@ SECTIONS
*(.stub .gnu.warning .gnu.linkonce.literal.* .gnu.linkonce.t.*.literal .gnu.linkonce.t.*)
*(.iram1 .iram1.*) /* catch stray IRAM_ATTR */
*liblog.a:(.literal .text .literal.* .text.*)
/* we use either libgcc or compiler-rt, so put similar entries for them here */
*libgcc.a:(.literal .text .literal.* .text.*)
*libclang_rt.builtins.a:(.literal .text .literal.* .text.*)
*libbootloader_support.a:bootloader_clock_loader.*(.literal .text .literal.* .text.*)
*libbootloader_support.a:bootloader_common_loader.*(.literal .text .literal.* .text.*)
*libbootloader_support.a:bootloader_flash.*(.literal .text .literal.* .text.*)

2
components/bootloader/subproject/main/ld/esp32c3/bootloader.ld
View File

@ -63,7 +63,9 @@ SECTIONS
*(.stub .gnu.warning .gnu.linkonce.literal.* .gnu.linkonce.t.*.literal .gnu.linkonce.t.*)
*(.iram1 .iram1.*) /* catch stray IRAM_ATTR */
*liblog.a:(.literal .text .literal.* .text.*)
/* we use either libgcc or compiler-rt, so put similar entries for them here */
*libgcc.a:(.literal .text .literal.* .text.*)
*libclang_rt.builtins.a:(.literal .text .literal.* .text.*)
*libbootloader_support.a:bootloader_clock_loader.*(.literal .text .literal.* .text.*)
*libbootloader_support.a:bootloader_common_loader.*(.literal .text .literal.* .text.*)
*libbootloader_support.a:bootloader_flash.*(.literal .text .literal.* .text.*)

2
components/bootloader/subproject/main/ld/esp32c6/bootloader.ld
View File

@ -60,7 +60,9 @@ SECTIONS
*(.stub .gnu.warning .gnu.linkonce.literal.* .gnu.linkonce.t.*.literal .gnu.linkonce.t.*)
*(.iram1 .iram1.*) /* catch stray IRAM_ATTR */
*liblog.a:(.literal .text .literal.* .text.*)
/* we use either libgcc or compiler-rt, so put similar entries for them here */
*libgcc.a:(.literal .text .literal.* .text.*)
*libclang_rt.builtins.a:(.literal .text .literal.* .text.*)
*libbootloader_support.a:bootloader_clock_loader.*(.literal .text .literal.* .text.*)
*libbootloader_support.a:bootloader_common_loader.*(.literal .text .literal.* .text.*)
*libbootloader_support.a:bootloader_flash.*(.literal .text .literal.* .text.*)

2
components/bootloader/subproject/main/ld/esp32h2/bootloader.ld
View File

@ -61,7 +61,9 @@ SECTIONS
*(.stub .gnu.warning .gnu.linkonce.literal.* .gnu.linkonce.t.*.literal .gnu.linkonce.t.*)
*(.iram1 .iram1.*) /* catch stray IRAM_ATTR */
*liblog.a:(.literal .text .literal.* .text.*)
/* we use either libgcc or compiler-rt, so put similar entries for them here */
*libgcc.a:(.literal .text .literal.* .text.*)
*libclang_rt.builtins.a:(.literal .text .literal.* .text.*)
*libbootloader_support.a:bootloader_clock_loader.*(.literal .text .literal.* .text.*)
*libbootloader_support.a:bootloader_common_loader.*(.literal .text .literal.* .text.*)
*libbootloader_support.a:bootloader_flash.*(.literal .text .literal.* .text.*)

2
components/bootloader/subproject/main/ld/esp32s2/bootloader.ld
View File

@ -29,7 +29,9 @@ SECTIONS
*(.stub .gnu.warning .gnu.linkonce.literal.* .gnu.linkonce.t.*.literal .gnu.linkonce.t.*)
*(.iram1 .iram1.*) /* catch stray IRAM_ATTR */
*liblog.a:(.literal .text .literal.* .text.*)
/* we use either libgcc or compiler-rt, so put similar entries for them here */
*libgcc.a:(.literal .text .literal.* .text.*)
*libclang_rt.builtins.a:(.literal .text .literal.* .text.*)
*libbootloader_support.a:bootloader_clock_loader.*(.literal .text .literal.* .text.*)
*libbootloader_support.a:bootloader_common_loader.*(.literal .text .literal.* .text.*)
*libbootloader_support.a:bootloader_flash.*(.literal .text .literal.* .text.*)

2
components/bootloader/subproject/main/ld/esp32s3/bootloader.ld
View File

@ -64,7 +64,9 @@ SECTIONS
*(.stub .gnu.warning .gnu.linkonce.literal.* .gnu.linkonce.t.*.literal .gnu.linkonce.t.*)
*(.iram1 .iram1.*) /* catch stray IRAM_ATTR */
*liblog.a:(.literal .text .literal.* .text.*)
/* we use either libgcc or compiler-rt, so put similar entries for them here */
*libgcc.a:(.literal .text .literal.* .text.*)
*libclang_rt.builtins.a:(.literal .text .literal.* .text.*)
*libbootloader_support.a:bootloader_clock_loader.*(.literal .text .literal.* .text.*)
*libbootloader_support.a:bootloader_common_loader.*(.literal .text .literal.* .text.*)
*libbootloader_support.a:bootloader_flash.*(.literal .text .literal.* .text.*)

4
components/cxx/CMakeLists.txt
View File

@ -43,7 +43,7 @@ endif()
if(CMAKE_C_COMPILER_ID MATCHES "Clang")
# libstdc++ depends on C library, so it should appear later in link order.
# Otherwise we get undefined references for esp-clang toolchain.
target_link_libraries(${COMPONENT_LIB} PUBLIC stdc++ c gcc)
target_link_libraries(${COMPONENT_LIB} PUBLIC stdc++ c ${CONFIG_COMPILER_RT_LIB_NAME})
else()
target_link_libraries(${COMPONENT_LIB} PUBLIC stdc++ gcc)
endif()
@ -63,7 +63,7 @@ else()
endif()
target_link_libraries(${COMPONENT_LIB} PUBLIC stdcpp_pthread)
add_library(libgcc_cxx INTERFACE)
target_link_libraries(libgcc_cxx INTERFACE gcc $<TARGET_FILE:${cxx}>)
target_link_libraries(libgcc_cxx INTERFACE ${CONFIG_COMPILER_RT_LIB_NAME} $<TARGET_FILE:${cxx}>)
target_link_libraries(${COMPONENT_LIB} PUBLIC libgcc_cxx)
if(NOT CONFIG_COMPILER_CXX_EXCEPTIONS)

2
components/newlib/CMakeLists.txt
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@ -36,7 +36,7 @@ idf_component_register(SRCS "${srcs}"
# Toolchain libraries require code defined in this component
idf_component_get_property(newlib newlib COMPONENT_LIB)
target_link_libraries(${COMPONENT_LIB} INTERFACE c m gcc "$<TARGET_FILE:${newlib}>")
target_link_libraries(${COMPONENT_LIB} INTERFACE c m ${CONFIG_COMPILER_RT_LIB_NAME} "$<TARGET_FILE:${newlib}>")
set_source_files_properties(heap.c PROPERTIES COMPILE_FLAGS -fno-builtin)

9
components/newlib/system_libs.lf
View File

@ -7,6 +7,15 @@ entries:
if IDF_TARGET_ARCH_RISCV:
save-restore (noflash)
[mapping:clang_rt_builtins]
archive: libclang_rt.builtins.a
entries:
if IDF_TARGET_ESP32 = n:
_divsf3 (noflash)
if IDF_TARGET_ARCH_RISCV:
save (noflash)
restore (noflash)
[mapping:gcov]
archive: libgcov.a
entries:

1
tools/ci/check_ldgen_mapping_exceptions.txt
View File

@ -1,3 +1,4 @@
libc
sha256_coredump
gcc
clang_rt_builtins

2
tools/cmake/build.cmake
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@ -468,6 +468,8 @@ macro(idf_build_process target)
idf_build_set_property(BOOTLOADER_BUILD "${BOOTLOADER_BUILD}")
idf_build_set_property(IDF_TOOLCHAIN "${IDF_TOOLCHAIN}")
# Check build target is specified. Since this target corresponds to a component
# name, the target component is automatically added to the list of common component
# requirements.

4
tools/cmake/kconfig.cmake
View File

@ -94,6 +94,7 @@ function(__kconfig_generate_config sdkconfig sdkconfig_defaults)
idf_build_set_property(KCONFIG_PROJBUILDS "${kconfig_projbuilds}")
idf_build_get_property(idf_target IDF_TARGET)
idf_build_get_property(idf_toolchain IDF_TOOLCHAIN)
idf_build_get_property(idf_path IDF_PATH)
idf_build_get_property(idf_env_fpga __IDF_ENV_FPGA)
@ -209,6 +210,7 @@ function(__kconfig_generate_config sdkconfig sdkconfig_defaults)
COMMAND ${prepare_kconfig_files_command}
COMMAND ${kconfgen_basecommand}
--env "IDF_TARGET=${idf_target}"
--env "IDF_TOOLCHAIN=${idf_toolchain}"
--env "IDF_ENV_FPGA=${idf_env_fpga}"
--dont-write-deprecated
--output config ${sdkconfig}
@ -218,6 +220,7 @@ function(__kconfig_generate_config sdkconfig sdkconfig_defaults)
"COMPONENT_KCONFIGS_PROJBUILD_SOURCE_FILE=${kconfigs_projbuild_path}"
"KCONFIG_CONFIG=${sdkconfig}"
"IDF_TARGET=${idf_target}"
"IDF_TOOLCHAIN=${idf_toolchain}"
"IDF_ENV_FPGA=${idf_env_fpga}"
${MENUCONFIG_CMD} ${root_kconfig}
USES_TERMINAL
@ -225,6 +228,7 @@ function(__kconfig_generate_config sdkconfig sdkconfig_defaults)
# compatibility)
COMMAND ${kconfgen_basecommand}
--env "IDF_TARGET=${idf_target}"
--env "IDF_TOOLCHAIN=${idf_toolchain}"
--env "IDF_ENV_FPGA=${idf_env_fpga}"
--output config ${sdkconfig}
)

1
tools/kconfig_new/config.env.in
View File

@ -3,6 +3,7 @@
"COMPONENT_KCONFIGS_PROJBUILD": "${kconfig_projbuilds}",
"COMPONENT_SDKCONFIG_RENAMES": "${sdkconfig_renames}",
"IDF_TARGET": "${idf_target}",
"IDF_TOOLCHAIN": "${idf_toolchain}",
"IDF_ENV_FPGA": "${idf_env_fpga}",
"IDF_PATH": "${idf_path}",
"COMPONENT_KCONFIGS_SOURCE_FILE": "${kconfigs_path}",

1
tools/test_apps/system/cxx_pthread_bluetooth/sdkconfig.ci.clang_libclang_rt Normal file
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@ -0,0 +1 @@
CONFIG_COMPILER_RT_LIB_CLANGRT=y

1
tools/test_apps/system/cxx_pthread_bluetooth/sdkconfig.ci.clang_libgcc Normal file
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@ -0,0 +1 @@
CONFIG_COMPILER_RT_LIB_GCCLIB=y