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Diffstat (limited to 'misc/buildroot/configs/README.txt')
| -rw-r--r-- | misc/buildroot/configs/README.txt | 157 |
1 files changed, 82 insertions, 75 deletions
diff --git a/misc/buildroot/configs/README.txt b/misc/buildroot/configs/README.txt index 6b76ff80d..0e9c6df5e 100644 --- a/misc/buildroot/configs/README.txt +++ b/misc/buildroot/configs/README.txt @@ -14,117 +14,124 @@ AVAILABLE CONFIGURATIONS ^^^^^^^^^^^^^^^^^^^^^^^^ arm-defconfig - Builds an OABI ARM toolchain using gcc 3.4.6 + Builds an OABI ARM toolchain using gcc 3.4.6 arm7tdmi-defconfig-4.2.4 arm920t-defconfig-4.2.4 arm926t-defconfig-4.2.4 - Builds an OABI ARM toolchain using gcc 4.2.4. This configuration - builds both gcc and g++. There are three versions: one for - arm7tdmi (armv4t), arm920t (armv4t) and arm926t (arv5t) because - of differences in the way that soft floating is handled in between - the armv4t and arm5t architectures. + Builds an OABI ARM toolchain using gcc 4.2.4. This configuration + builds both gcc and g++. There are three versions: one for + arm7tdmi (armv4t), arm920t (armv4t) and arm926t (arv5t) because + of differences in the way that soft floating is handled in between + the armv4t and arm5t architectures. - NOTE: The newer versions of GCC generate new sections and can - cause some problems for NuttX configurations developed under older - toolchains. In particular, arm-elf-objcopy may fail with strange - errors. If this occurs, try adding the following arguments to the - arm-elf-objcopy command "-R .note -R .note.gnu.build-id -R .comment" + NOTE: The newer versions of GCC generate new sections and can + cause some problems for NuttX configurations developed under older + toolchains. In particular, arm-elf-objcopy may fail with strange + errors. If this occurs, try adding the following arguments to the + arm-elf-objcopy command "-R .note -R .note.gnu.build-id -R .comment" - This logic is several configuration Make.defs files: + This logic is several configuration Make.defs files: - HOSTOS = ${shell uname -o} + HOSTOS = ${shell uname -o} - ARCHCCVERSION = ${shell $(CC) -v 2>&1 | sed -n '/^gcc version/p' | sed -e 's/^gcc version \([0-9\.]\)/\1/g' -e 's/[-\ ].*//g' -e '1q'} - ARCHCCMAJOR = ${shell echo $(ARCHCCVERSION) | cut -d'.' -f1} + ARCHCCVERSION = ${shell $(CC) -v 2>&1 | sed -n '/^gcc version/p' | sed -e 's/^gcc version \([0-9\.]\)/\1/g' -e 's/[-\ ].*//g' -e '1q'} + ARCHCCMAJOR= ${shell echo $(ARCHCCVERSION) | cut -d'.' -f1} - ifeq ($(ARCHCCMAJOR),4) - ifneq ($(HOSTOS),Cygwin) - OBJCOPYARGS = -R .note -R .note.gnu.build-id -R .comment - endif - endif + ifeq ($(ARCHCCMAJOR),4) + ifneq ($(HOSTOS),Cygwin) + OBJCOPYARGS = -R .note -R .note.gnu.build-id -R .comment + endif + endif - This change probably applies to other architectures as well (?) + This change probably applies to other architectures as well (?) arm920t-defconfig-4.3.3 arm7tdmi-defconfig-4.3.3 - Builds an OABI ARM toolchain using gcc 4.3.3. These configurations - builds both gcc and g++ for the arm7tdmi (armv4t) or the arm920t - (armv4t). These are udates to *-defconfig-4.2.4 (see notes above). + Builds an OABI ARM toolchain using gcc 4.3.3. These configurations + builds both gcc and g++ for the arm7tdmi (armv4t) or the arm920t + (armv4t). These are udates to *-defconfig-4.2.4 (see notes above). + +arm926t-defconfig-nxflat + This configuration build an NXFLAT toolchain (only) for + use with the ARM9. avr-defconfig-4.3.3 avr-defconfig-5.4.2 - Builds an AVR toolchain using gcc 4.3.3 or 4.5.2. This configuration - builds both gcc and g++ for the AVR (armv4t). This toolchain - is intended to support the NuttX ATmega128 port. + Builds an AVR toolchain using gcc 4.3.3 or 4.5.2. This configuration + builds both gcc and g++ for the AVR (armv4t). This toolchain + is intended to support the NuttX ATmega128 port. + +cortexm0-eabi-defconfig-4.6.3 + Builds an EABI ARM toolchain for the Cortex-M0 using gcc 4.6.3. + This configuration builds gcc and g++ (NXFLAT is not currently + supported for the Cortex-M0). cortexm3-defconfig-4.3.3 - Builds an OABI ARM toolchain for the Cortex-M3 using gcc 4.3.3. - This configuration builds gcc, g++ and the NXFLAT toolchain. + Builds an OABI ARM toolchain for the Cortex-M3 using gcc 4.3.3. + This configuration builds gcc, g++ and the NXFLAT toolchain. + +cortexm3-eabi-defconfig-4.5.2 + Builds an EABI ARM toolchain for the Cortex-M3 using gcc 4.5.2. + This configuration builds gcc, g++ and the NXFLAT toolchain. cortexm3-eabi-defconfig-4.6.3 - Builds an EABI ARM toolchain for the Cortex-M3 using gcc 4.6.3. - This configuration builds gcc, g++ and the NXFLAT toolchain. + Builds an EABI ARM toolchain for the Cortex-M3 using gcc 4.6.3. + This configuration builds gcc, g++ and the NXFLAT toolchain. cortexm3-defconfig-nxflat -arm926t-defconfig-nxflat - This configuration build an NXFLAT toolchain (only) for - use with the Cortex-M3 or ARM9 (untested on ARM9 as of this - writing). - -cortexm3-eabi-defconfig-4.5.2 - Builds an EABI ARM toolchain for the Cortex-M3 using gcc 4.5.2. - This configuration builds gcc, g++ and the NXFLAT toolchain. + This configuration build an NXFLAT toolchain (only) for + use with the Cortex-M3. bfin-defconfig-4.2.4 - Builds an Blackfin toolchain using gcc 4.2.4 + Builds an Blackfin toolchain using gcc 4.2.4 h8300_config - Builds an H8/300 toolchain using gcc 3.4.6 + Builds an H8/300 toolchain using gcc 3.4.6 i486-defconfig-4.3.3 - Builds an i486 cross development toolchain using gcc 4.3.3. Why would - you want such a thing? On Linux, of course, such a thing is not needed - because you can use the installed GCC to build i486 ELF binaries. But - that will not work under Cygwin! The Cygwin toolchain (and probably - MinGW), build DOS MZ format executables (i.e., .exe files). That is - probably not usable for most NuttX targets. Instead, you should use this - i486-elf-gcc to generate true ELF binaries under Cygwin. + Builds an i486 cross development toolchain using gcc 4.3.3. Why would + you want such a thing? On Linux, of course, such a thing is not needed + because you can use the installed GCC to build i486 ELF binaries. But + that will not work under Cygwin! The Cygwin toolchain (and probably + MinGW), build DOS MZ format executables (i.e., .exe files). That is + probably not usable for most NuttX targets. Instead, you should use this + i486-elf-gcc to generate true ELF binaries under Cygwin. m32c_defconfig_4.2.4 m32c_defconfig_4.3.3 - Build a toolchain for use with the M16C port using eith gcc 4.2.4 or 4.3.3 + Build a toolchain for use with the M16C port using eith gcc 4.2.4 or 4.3.3 m68hc11-config m68hc12-config-3.4.6 - Builds an hc11/hc12 toolchain using gcc 3.4.6 . NOT RECOMMENDED for hcs12; + Builds an hc11/hc12 toolchain using gcc 3.4.6 . NOT RECOMMENDED for hcs12; Use m9s12x_config_3.3.6 m68hc12-config-4.3.3 - Builds an hc11/hc12 toolchain using gcc 4.3.3.NOT RECOMMENDED for hcs12; + Builds an hc11/hc12 toolchain using gcc 4.3.3.NOT RECOMMENDED for hcs12; Use m9s12x_config_3.3.6 - This configuration fails to build with the following error: + This configuration fails to build with the following error: - make[3]: Entering directory `blabla/buildroot/toolchain_build_m68hc12/gcc-4.3.3-build/m68hc12-elf/libgcc' - ... - blabla/buildroot/toolchain_build_m68hc12/gcc-4.3.3/libgcc/../gcc/libgcc2.c:566: internal compiler error: in init_move_cost, at regclass.c:323 - Please submit a full bug report, - with preprocessed source if appropriate. - See <http://gcc.gnu.org/bugs.html> for instructions. - make[3]: *** [_muldi3.o] Error 1 - make[3]: Leaving directory `blabla/buildroot/toolchain_build_m68hc12/gcc-4.3.3-build/m68hc12-elf/libgcc' + make[3]: Entering directory `blabla/buildroot/toolchain_build_m68hc12/gcc-4.3.3-build/m68hc12-elf/libgcc' + ... + blabla/buildroot/toolchain_build_m68hc12/gcc-4.3.3/libgcc/../gcc/libgcc2.c:566: internal compiler error: in init_move_cost, at regclass.c:323 + Please submit a full bug report, + with preprocessed source if appropriate. + See <http://gcc.gnu.org/bugs.html> for instructions. + make[3]: *** [_muldi3.o] Error 1 + make[3]: Leaving directory `blabla/buildroot/toolchain_build_m68hc12/gcc-4.3.3-build/m68hc12-elf/libgcc' - Use m68hc12-config-3.4.6 + Use m68hc12-config-3.4.6 m9s12x_config_3.3.6 - Builds a hcs12 toolchain using gcc 3.3.6 and extensive m9x12x-specific patches. + Builds a hcs12 toolchain using gcc 3.3.6 and extensive m9x12x-specific patches. m68k-config - Builds an M68K toolchain using gcc 3.4.6 + Builds an M68K toolchain using gcc 3.4.6 sh-defconfig - Builds an SH-1/2 toolchain using gcc 3.4.6 + Builds an SH-1/2 toolchain using gcc 3.4.6 GENERAL BUILD STEPS ^^^^^^^^^^^^^^^^^^^ @@ -282,14 +289,14 @@ Cygwin GCC BUILD NOTES and, apparently, the make variable "exeext" is set incorrectly. A work around after the above occurs is: - cd toolchain_build_<arch>/gcc-4.2.4-build/gcc # Go to the directory where error occurred - mv cc1-dummy.exe cc1-dummy # Rename the executable without .exe - rm cc1-checksum.c # Get rid of the bad generated file + cd toolchain_build_<arch>/gcc-4.2.4-build/gcc # Go to the directory where error occurred + mv cc1-dummy.exe cc1-dummy # Rename the executable without .exe + rm cc1-checksum.c # Get rid of the bad generated file Then resume the buildroot make: - cd - # Back to the buildroot make directory - make # Restart the build + cd - # Back to the buildroot make directory + make # Restart the build If you build g++, you will see another similar error: @@ -300,14 +307,14 @@ Cygwin GCC BUILD NOTES The fix is similar: - cd toolchain_build_<arch>/gcc-4.2.4-build/gcc # Go to the directory where error occurred - mv cc1plus-dummy.exe cc1plus-dummy # Rename the executable without .exe - rm cc1plus-checksum.c # Get rid of the bad generated file + cd toolchain_build_<arch>/gcc-4.2.4-build/gcc # Go to the directory where error occurred + mv cc1plus-dummy.exe cc1plus-dummy # Rename the executable without .exe + rm cc1plus-checksum.c # Get rid of the bad generated file Then resume the buildroot make: - cd - # Back to the buildroot make directory - make # Restart the build + cd - # Back to the buildroot make directory + make # Restart the build o Once I had problems building the toolchain on Cygwin. In this case, I would occasioinally get "Permission denied" errors will trying to configure @@ -341,4 +348,4 @@ Building GDB Under Cygwin directory if it is needed: cp configs/gdb-1_8-cygwin-1_7.patch toolchain/gdb/6.8/. - +
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