On Thu, Dec 01, 2022 at 09:15:42AM +0000, Zachary Leaf wrote:
On 30/11/2022 12:13, Beata Michalska wrote:
Clean-up the instructions for building LTP syscall testcases, as those have become bit stale. Also add some additional details on the required setup.
Signed-off-by: Beata Michalska beata.michalska@arm.com
changes available at: https://git.morello-project.org/Bea/morello-linux-ltp/-/tree/morello/readme_...
v4:
- re-fitting the 'Building' section title into one line
- re-phrasing the description for OUTPUT_DIR and renaming that one into LTP_INSTALL
v3:
- switching to 'plain aarch64' instead using aarch64
v2:
- increasing readability (hopefully)
- added info on aarch64 build
- dropped -pthread option as this one is not required when building with Musl (@thanks to Yury)
README.rst | 75 ++++++++++++++++++++++++++++++++++++------------------ 1 file changed, 50 insertions(+), 25 deletions(-)
Looks good to me as well. I'm now using these new instructions for LTP and other standalone stuff. This new way of linking crt is much simpler and improved from before.
Thanks for the review!
--- BR B.
Thanks, Zach
diff --git a/README.rst b/README.rst index 342901f4d..4aebadd35 100644 --- a/README.rst +++ b/README.rst @@ -18,8 +18,8 @@ https://op-lists.linaro.org/mailman3/lists/linux-morello-ltp.op-lists.linaro... pure-capability kernel-user ABI (PCuABI) (see `Morello Linux ABI specifications https://git.morello-project.org/morello/kernel/linux/-/wikis/home`_)
-Building (cross-compiling) & running relevant tests (purecap mode)
+Building & running relevant tests (purecap and plain aarch64 mode) +------------------------------------------------------------------ Dependencies/requirements: (additional to what's required to build base LTP): @@ -29,7 +29,7 @@ Dependencies/requirements: (additional to what's required to build base LTP): Binary releases: https://git.morello-project.org/morello/llvm-project-releases
- **morello/baremetal-release-1.4** + **morello/linux-aarch64-release-1.4** for Morello
- **morello/baremetal-release-1.x*** + **morello/linux-aarch64-release-1.x*** for Morello purecap crt objects
@@ -37,6 +37,8 @@ Dependencies/requirements: (additional to what's required to build base LTP):
- Kernel uAPI header files: https://git.morello-project.org/morello/morello-linux-headers
+* All based on the same release/tag version.
Building Musl:
@@ -44,16 +46,27 @@ Assumptions: .. code-block::
- clang - Morello Clang (see Dependencies) configured for current environment
- clang - Morello Clang (see Dependencies) configured for current environment
+.. code-block::
- TRIPLE - Target architecture:
- morello+c64 (purecap): aarch64-linux-musl_purecap- plain aarch64: aarch64-linux-gnu- MORELLO_SUPPORT - Enabling support for Morello
- morello+c64 (purecap): --enable-morello- plain aarch64: --disable-morello.. code-block:: CC=clang ./configure \ --disable-shared \
- --enable-morello \
- ${MORELLO_SUPPORT} \ --disable-libshim \
- --target=aarch64-linux-musl_purecap \
- --target=${TRIPLE} \ --prefix=${INSTALL_PATH}
@@ -72,27 +85,31 @@ Assumptions: .. code-block:: clang - Morello Clang (see Dependencies) configured for current environment
- KHDR_DIR - kernel uAPI headers
- MUSL - Musl build (see above)
- MORELLO_CRT_OBJS - as per https://git.morello-project.org/morello/llvm-project-releases/-/tree/morello...
-> $(clang -print-resource-dir)/lib/aarch64-unknown-linux-musl_purecap
- TRIPLE - target architecture:
- morello+c64 (purecap): aarch64-linux-musl_purecap- plain aarch64: aarch64-linux-gnu(needs to match *TRIPLE* specified for Musl build)- KHDR_DIR - kernel uAPI headers (see Dependencies or alternatively headers
installed for Morello Linux kernel through make headers_install)- MUSL - installed Musl libc for Morello (see section above: `Building Musl`);
this will serve as a location for --sysroot option(note this must match chosen configuration - see*TRIPLE* & *MORELLO_SUPPORT* in `Building Musl`)- LTP_BUILD - out-of-tree build path (created by LTP's build.sh script if needed)
- LTP_INSTALL - destination path where LTP tests are to be installed
- TARGETS - build targets, currently only pan and testcases/kernel/syscalls
are supported, it can be further narrowed down for specific syscalltestcases:TARGETS="pan testcases/kernel/syscalls/${syscall}"- TARGET_FEATURE - morello+c64 (purecap) only: -march=morello+c64
.. code-block::
- CLANG_RES_DIR=$(clang -print-resource-dir)
- CFLAGS="--target=${TRIPLE} ${TARGET_FEATURE} --sysroot=${MUSL} \
-isystem ${KHDR_DIR}/usr/include -g -Wall"
- CFLAGS_COMMON="--target=aarch64-linux-gnu -integrated-as -g -static -nostdinc -pthread \
- -isystem $KHDR_DIR/usr/include"
- CFLAGS_PURECAP="$CFLAGS_COMMON -march=morello+c64 -mabi=purecap \
- -isystem $CLANG_RES_DIR/include -isystem $MUSL/include -Wall"
- LDFLAGS_COMMON="--target=aarch64-linux-gnu -fuse-ld=lld -static -nostdlib"
- LDFLAGS_PURECAP="$LDFLAGS_COMMON $MUSL/lib/crt1.o $MUSL/lib/crti.o \
- $MORELLO_CRT_OBJS/clang_rt.crtbegin.o $MORELLO_CRT_OBJS/libclang_rt.builtins.a \
- $MORELLO_CRT_OBJS/clang_rt.crtend.o $MUSL/lib/crtn.o -L$MUSL/lib/ -lc -L$LTP_BUILD/lib"
- LDFLAGS="--target=${TRIPLE} -rtlib=compiler-rt --sysroot=${MUSL} \
-fuse-ld=lld -static -L${LTP_BUILD}/lib"export CC=clang export HOST_CFLAGS="-O2 -Wall" @@ -101,9 +118,17 @@ Assumptions: MAKE_OPTS="TST_NEWER_64_SYSCALL=no TST_COMPAT_16_SYSCALL=no" \ TARGETS="pan testcases/kernel/syscalls" BUILD_DIR="$LTP_BUILD" \
- CFLAGS="$CFLAGS_PURECAP" LDFLAGS="$LDFLAGS_PURECAP" \
- ./build.sh -t cross -o out -ip "${OUTPUT_DIR}/opt/ltp"
- CFLAGS="$CFLAGS" LDFLAGS="$LDFLAGS" \
- ./build.sh -t cross -o out -ip "${LTP_INSTALL}"
+This can be split into separate steps for ``configure``, ``build`` and ``install`` by +specifying additional parameter to ``build.sh`` detailing each step:
+.. code-block::
-r configure - run configure only-r build - run build only-r install - run install onlyRunning tests: