On Fri, Nov 25, 2022 at 04:38:44PM +0000, Zachary Leaf wrote:
On 25/11/2022 10:25, 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/dev
README.rst | 47 +++++++++++++++++++++++++++-------------------- 1 file changed, 27 insertions(+), 20 deletions(-)
diff --git a/README.rst b/README.rst index 342901f4d..fc07d3b64 100644 --- a/README.rst +++ b/README.rst @@ -21,7 +21,7 @@ https://op-lists.linaro.org/mailman3/lists/linux-morello-ltp.op-lists.linaro... Building (cross-compiling) & running relevant tests (purecap mode)
-Dependencies/requirements: (additional to what's required to build base LTP): +Dependencies/requirements: (additional to what's required to build base LTP)
- Morello LLVM toolchain (version >= 1.4)
@@ -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.*** + **morello/linux-aarch64-release-1.*** 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:
@@ -72,27 +74,24 @@ 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...
-> $(clang -print-resource-dir)/lib/aarch64-unknown-linux-musl_purecap
- KHDR_DIR - kernel uAPI headers (see Dependencies or alternatively
headers installed for Morello Linux kernel through make headers_install)- MUSL - installed Musl libc for Morello (see section above: Building Musl);
this will serve as a location for --sysroot option- LTP_BUILD - location for the out-of-tree build (generated automatically)
- OUTPUT_DIR - pre-existing location where LTP tests are to be installed
- TARGETS - build targets, currently only pan and testcases/kernel/syscalls
are supported, it can be further narrowed down forspecific syscall testcases:TARGETS="pan testcases/kernel/syscalls/${syscall}".. code-block::
- CLANG_RES_DIR=$(clang -print-resource-dir)
- CFLAGS_COMMON="--target=aarch64-linux-gnu -integrated-as -g -static -nostdinc -pthread \
- -isystem $KHDR_DIR/usr/include"
I brought this up under the first iteration, but maybe it's worth bringing up again since it looks like it should be much easier now.
Thoughts on including a separate box here for building for compat64 i.e. normal aarch64?
e.g. Building LTP syscall testcases (purecap): ... Building LTP syscall testcases (compat64 i.e. aarch64): ...
The overall goal of compat64 is to fully support the existing aarch64 ABI, so to that end having instructions to cross-compile the tests for aarch64 I think would be appreciated even if it's (fairly) easy to derive from what's here.
I'm happy to add a patch for it once this is merged (or to send to you to include in this one).
Will add that in v2.
--- BR B.
- CFLAGS_PURECAP="$CFLAGS_COMMON -march=morello+c64 -mabi=purecap \
- -isystem $CLANG_RES_DIR/include -isystem $MUSL/include -Wall"
- CFLAGS="--target=aarch64-linux-musl_purecap -march=morello+c64 --sysroot=${MUSL} \
-isystem $KHDR_DIR/usr/include -g -pthread -Wall"
- LDFLAGS_COMMON="--target=aarch64-linux-gnu -fuse-ld=lld -static -nostdlib"
- LDFLAGS_PURECAP="$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$LTP_BUILD/lib"
- LDFLAGS="--target=aarch64-linux-musl_purecap -rtlib=compiler-rt --sysroot=${MUSL} \
-fuse-ld=lld -static -L${LTP_BUILD}/lib"export CC=clang export HOST_CFLAGS="-O2 -Wall" @@ -101,9 +100,17 @@ Assumptions: MAKE_OPTS="TST_NEWER_64_SYSCALL=no TST_COMPAT_16_SYSCALL=no" \ TARGETS="pan testcases/kernel/syscalls" BUILD_DIR="$LTP_BUILD" \
- CFLAGS="$CFLAGS_PURECAP" LDFLAGS="$LDFLAGS_PURECAP" \
- CFLAGS="$CFLAGS" LDFLAGS="$LDFLAGS" \ ./build.sh -t cross -o out -ip "${OUTPUT_DIR}/opt/ltp"
+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 cunfigure only*configure
Good to know though, skipping reconfigure with these saves a lot of time.
Thanks, Zach
-r build - run build only-r install - run install onlyRunning tests:
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