Thread local support for ARM
I'm developing software for AT91RM9200 CPU using a crosstool (0.43) generated build environment.
Crosstool itself appears to work fine, but I have not been able to get support for thread local variables working. Compilation of "__thread int variable;" goes wrong as described below >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> Building file: ../src/ARM_Test2.c Invoking: GCC C Compiler /opt/crosstool/gcc-4.1.0-glibc-2.3.2/arm-9tdmi-linux-gnu/bin/arm-9tdmi-linux-gnu-gcc -O0 -g3 -Wall -c -fmessage-length=0 -pthread -MMD -MP -MF"src/ARM_Test2.d" -MT"src/ARM_Test2.d" -o"src/ARM_Test2.o" "../src/ARM_Test2.c" ../src/ARM_Test2.c:16: error: thread-local storage not supported for this target <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< Content of "arm-9tdmi-linux-gnu.crosstoolconfig.txt", which to my understanding should contain necessary switches for TLS. >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> AR= BINUTILS_DIR=binutils-2.16.1 BINUTILS_EXTRA_CONFIG= BUILD=i686-pc-linux-gnu BUILD_DIR=/home/hannu/XBuild/crosstool-0.43/build/arm-9tdmi-linux-gnu/gcc-4.1.0-glibc-2.3.2 CC= DEJAGNU= EXTRA_TARGET_CFLAGS= GCC_BUILD= GCC_CORE_DIR=gcc-3.3.6 GCC_DIR=gcc-4.1.0 GCC_EXTRA_CONFIG=--with-cpu=arm9tdmi --enable-cxx-flags=-mcpu=arm9tdmi GCC_HOST= GCC_LANGUAGES=c,c++ GDB_DIR=gdb-6.5 GLIBC_ADDON_OPTIONS==linuxthreads, GLIBC_DIR=glibc-2.3.2 GLIBC_EXTRA_CC_ARGS= GLIBC_EXTRA_CONFIG= --with-tls --with-__thread --enable-kernel=2.4.18 GLIBC_EXTRA_ENV= JUST_DOWNLOAD= KERNELCONFIG=/home/hannu/XBuild/crosstool-0.43/arm.config LINUX_DIR=linux-2.6.15.4 LINUX_SANITIZED_HEADER_DIR=linux-libc-headers-2.6.12.0 NO_DOWNLOAD= PREFIX=/opt/crosstool/gcc-4.1.0-glibc-2.3.2/arm-9tdmi-linux-gnu PTXDIST_DIR= SHARED_MODE=--enable-shared SRC_DIR=/home/hannu/XBuild/crosstool-0.43/build/arm-9tdmi-linux-gnu/gcc-4.1.0-glibc-2.3.2 TARBALLS_DIR=/home/hannu/downloads TARGET=arm-9tdmi-linux-gnu TARGET_CFLAGS=-O TOP_DIR=/home/hannu/XBuild/crosstool-0.43 USE_SYSROOT= <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< Suggestions where to look next would be appreciated --Hannu |
From what I know you need binutils-2.16.90 or newer.
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