timer.h in rtdm module

timer.h in rtdm module

[C Smith]

I have a legacy RTDM driver I am trying to port from Xenomai 2.6 to 3.1. I
am attempting to include the /usr/xenomai/include/trank headers. My app
uses some Alchemy API as well as RTDM API. In particular, rt_timer_read()
seems to require Alchemy. But when my code does
#include <native/timer.h>
I get this compiler error:
In file included from /home/csmith/src/app3-prog/modules/myapp.c:19:
/usr/xenomai/include/trank/native/timer.h:21:10: fatal error: errno.h: No
such file or directory

I compiled with make V=1 and I will show you the whole gcc command line
(sorry it's long):

gcc -Wp,-MD,/home/csmith/src/app3-prog/ecl/modules/.myapp.o.d  -nostdinc
-isystem /usr/lib/gcc/x86_64-redhat-linux/8/include -I./arch/x86/include
-I./arch/x86/include/generated  -I./include -I./arch/x86/include/uapi
-I./arch/x86/include/generated/uapi -I./include/uapi
-I./include/generated/uapi -include ./include/linux/kconfig.h -include
./include/linux/compiler_types.h -D__KERNEL__ -Wall -Wundef
-Wstrict-prototypes -Wno-trigraphs -fno-strict-aliasing -fno-common
-fshort-wchar -Werror-implicit-function-declaration -Wno-format-security
-std=gnu89 -fno-PIE -mno-sse -mno-mmx -mno-sse2 -mno-3dnow -mno-avx -m64
-falign-jumps=1 -falign-loops=1 -mno-80387 -mno-fp-ret-in-387
-mpreferred-stack-boundary=3 -mskip-rax-setup -mtune=generic -mno-red-zone
-mcmodel=kernel -funit-at-a-time -DCONFIG_AS_CFI=1
-DCONFIG_AS_CFI_SIGNAL_FRAME=1 -DCONFIG_AS_CFI_SECTIONS=1
-DCONFIG_AS_FXSAVEQ=1 -DCONFIG_AS_SSSE3=1 -DCONFIG_AS_CRC32=1
-DCONFIG_AS_AVX=1 -DCONFIG_AS_AVX2=1 -DCONFIG_AS_AVX512=1
-DCONFIG_AS_SHA1_NI=1 -DCONFIG_AS_SHA256_NI=1 -pipe -Wno-sign-compare
-fno-asynchronous-unwind-tables -mindirect-branch=thunk-extern
-mindirect-branch-register -fno-jump-tables -Iarch/x86/xenomai/include
-Iinclude/xenomai -fno-delete-null-pointer-checks -Wno-frame-address
-Wno-format-truncation -Wno-format-overflow -Wno-int-in-bool-context -O2
--param=allow-store-data-races=0 -Wframe-larger-than=2048
-fstack-protector-strong -Wno-unused-but-set-variable
-Wno-unused-const-variable -fno-omit-frame-pointer
-fno-optimize-sibling-calls -fno-var-tracking-assignments -g -pg -mfentry
-DCC_USING_FENTRY -Wdeclaration-after-statement -Wno-pointer-sign
-Wno-stringop-truncation -fno-strict-overflow -fno-merge-all-constants
-fmerge-constants -fno-stack-check -fconserve-stack -Werror=implicit-int
-Werror=strict-prototypes -Werror=date-time
-Werror=incompatible-pointer-types -Werror=designated-init
-fmacro-prefix-map=./= -fcf-protection=none -Wno-packed-not-aligned
-I/lib/modules/4.19.89xeno3.1-i64x8632/build/include/xenomai
-I/lib/modules/4.19.89xeno3.1-i64x8632/build/include/xenomai/posix
-I/home/csmith/src/app3-prog -I/usr/xenomai/include/trank
-I/usr/xenomai/include -D__XENO_COMPAT__  -DMODULE
 -DKBUILD_BASENAME='"myapp"' -DKBUILD_MODNAME='"myapp"' -c -o
/home/csmith/src/app3-prog/modules/myapp.o
/home/csmith/src/app3-prog/modules/myapp.c

How can I compile with the "trank" to get native/timer.h and
rt_timer_read() ?

thanks, -C Smith

Re: timer.h in rtdm module

[Jan Kiszka]

On 06.10.21 09:40, C Smith via Xenomai wrote:
> I have a legacy RTDM driver I am trying to port from Xenomai 2.6 to 3.1. I
> am attempting to include the /usr/xenomai/include/trank headers. My app
> uses some Alchemy API as well as RTDM API. In particular, rt_timer_read()
> seems to require Alchemy. But when my code does
> #include <native/timer.h>
> I get this compiler error:
> In file included from /home/csmith/src/app3-prog/modules/myapp.c:19:
> /usr/xenomai/include/trank/native/timer.h:21:10: fatal error: errno.h: No
> such file or directory
> 
> I compiled with make V=1 and I will show you the whole gcc command line
> (sorry it's long):
> 
> gcc -Wp,-MD,/home/csmith/src/app3-prog/ecl/modules/.myapp.o.d  -nostdinc
> -isystem /usr/lib/gcc/x86_64-redhat-linux/8/include -I./arch/x86/include

errno.h is expected under the system headers path, which you overwrite
to /usr/lib/gcc/x86_64-redhat-linux/8/include. Apparently, it's missing
there.

Jan

> -I./arch/x86/include/generated  -I./include -I./arch/x86/include/uapi
> -I./arch/x86/include/generated/uapi -I./include/uapi
> -I./include/generated/uapi -include ./include/linux/kconfig.h -include
> ./include/linux/compiler_types.h -D__KERNEL__ -Wall -Wundef
> -Wstrict-prototypes -Wno-trigraphs -fno-strict-aliasing -fno-common
> -fshort-wchar -Werror-implicit-function-declaration -Wno-format-security
> -std=gnu89 -fno-PIE -mno-sse -mno-mmx -mno-sse2 -mno-3dnow -mno-avx -m64
> -falign-jumps=1 -falign-loops=1 -mno-80387 -mno-fp-ret-in-387
> -mpreferred-stack-boundary=3 -mskip-rax-setup -mtune=generic -mno-red-zone
> -mcmodel=kernel -funit-at-a-time -DCONFIG_AS_CFI=1
> -DCONFIG_AS_CFI_SIGNAL_FRAME=1 -DCONFIG_AS_CFI_SECTIONS=1
> -DCONFIG_AS_FXSAVEQ=1 -DCONFIG_AS_SSSE3=1 -DCONFIG_AS_CRC32=1
> -DCONFIG_AS_AVX=1 -DCONFIG_AS_AVX2=1 -DCONFIG_AS_AVX512=1
> -DCONFIG_AS_SHA1_NI=1 -DCONFIG_AS_SHA256_NI=1 -pipe -Wno-sign-compare
> -fno-asynchronous-unwind-tables -mindirect-branch=thunk-extern
> -mindirect-branch-register -fno-jump-tables -Iarch/x86/xenomai/include
> -Iinclude/xenomai -fno-delete-null-pointer-checks -Wno-frame-address
> -Wno-format-truncation -Wno-format-overflow -Wno-int-in-bool-context -O2
> --param=allow-store-data-races=0 -Wframe-larger-than=2048
> -fstack-protector-strong -Wno-unused-but-set-variable
> -Wno-unused-const-variable -fno-omit-frame-pointer
> -fno-optimize-sibling-calls -fno-var-tracking-assignments -g -pg -mfentry
> -DCC_USING_FENTRY -Wdeclaration-after-statement -Wno-pointer-sign
> -Wno-stringop-truncation -fno-strict-overflow -fno-merge-all-constants
> -fmerge-constants -fno-stack-check -fconserve-stack -Werror=implicit-int
> -Werror=strict-prototypes -Werror=date-time
> -Werror=incompatible-pointer-types -Werror=designated-init
> -fmacro-prefix-map=./= -fcf-protection=none -Wno-packed-not-aligned
> -I/lib/modules/4.19.89xeno3.1-i64x8632/build/include/xenomai
> -I/lib/modules/4.19.89xeno3.1-i64x8632/build/include/xenomai/posix
> -I/home/csmith/src/app3-prog -I/usr/xenomai/include/trank
> -I/usr/xenomai/include -D__XENO_COMPAT__  -DMODULE
>  -DKBUILD_BASENAME='"myapp"' -DKBUILD_MODNAME='"myapp"' -c -o
> /home/csmith/src/app3-prog/modules/myapp.o
> /home/csmith/src/app3-prog/modules/myapp.c
> 
> How can I compile with the "trank" to get native/timer.h and
> rt_timer_read() ?
> 
> thanks, -C Smith
> 

-- 
Siemens AG, T RDA IOT
Corporate Competence Center Embedded Linux

Re: timer.h in rtdm module

[C Smith]

Thanks for the insight. I removed the -isystem line, I don't know where it
came from, I have legacy xeno 2.6 Makefiles. I added a few more paths to
system headers. I am now getting a lot of redefined symbols errors.  Here
is current attempt to compile: (this is compiled while standing in
/usr/src/linux/ BTW)

gcc -Wp,-MD,/home/appuser/src/codebase/ecl/modules/.myapp.o.d -nostdinc
-I./arch/x86/include -I./arch/x86/include/generated  -I./include
-I./include/linux -I/usr/lib/gcc/x86_64-redhat-linux/8/include
 -I./arch/x86/include/uapi -I./arch/x86/include/generated/uapi
-I./include/uapi -I./include/generated/uapi -include
./include/linux/kconfig.h -include ./include/linux/compiler_types.h
-I/usr/xenomai/include/cobalt -I/usr/include -D__KERNEL__ -Wall -Wundef
-Wstrict-prototypes -Wno-trigraphs -fno-strict-aliasing -fno-common
-fshort-wchar -Werror-implicit-function-declaration -Wno-format-security
-std=gnu89 -fno-PIE -mno-sse -mno-mmx -mno-sse2 -mno-3dnow -mno-avx -m64
-falign-jumps=1 -falign-loops=1 -mno-80387 -mno-fp-ret-in-387
-mpreferred-stack-boundary=3 -mskip-rax-setup -mtune=generic -mno-red-zone
-mcmodel=kernel -funit-at-a-time -DCONFIG_AS_CFI=1
-DCONFIG_AS_CFI_SIGNAL_FRAME=1 -DCONFIG_AS_CFI_SECTIONS=1
-DCONFIG_AS_FXSAVEQ=1 -DCONFIG_AS_SSSE3=1 -DCONFIG_AS_CRC32=1
-DCONFIG_AS_AVX=1 -DCONFIG_AS_AVX2=1 -DCONFIG_AS_AVX512=1
-DCONFIG_AS_SHA1_NI=1 -DCONFIG_AS_SHA256_NI=1 -pipe -Wno-sign-compare
-fno-asynchronous-unwind-tables -mindirect-branch=thunk-extern
-mindirect-branch-register -fno-jump-tables -Iarch/x86/xenomai/include
-Iinclude/xenomai -fno-delete-null-pointer-checks -Wno-frame-address
-Wno-format-truncation -Wno-format-overflow -Wno-int-in-bool-context -O2
--param=allow-store-data-races=0 -Wframe-larger-than=2048
-fstack-protector-strong -Wno-unused-but-set-variable
-Wno-unused-const-variable -fno-omit-frame-pointer
-fno-optimize-sibling-calls -fno-var-tracking-assignments -g -pg -mfentry
-DCC_USING_FENTRY -Wdeclaration-after-statement -Wno-pointer-sign
-Wno-stringop-truncation -fno-strict-overflow -fno-merge-all-constants
-fmerge-constants -fno-stack-check -fconserve-stack -Werror=implicit-int
-Werror=strict-prototypes -Werror=date-time
-Werror=incompatible-pointer-types -Werror=designated-init
-fmacro-prefix-map=./= -fcf-protection=none -Wno-packed-not-aligned
-I/lib/modules/4.19.89xeno3.1-i64x8632/build/include/xenomai
-I/lib/modules/4.19.89xeno3.1-i64x8632/build/include/xenomai/posix
-I/home/appuser/src/codebase -I/usr/xenomai/include/trank
-I/usr/xenomai/include -D__XENO_COMPAT__  -DMODULE
 -DKBUILD_BASENAME='"myapp"' -DKBUILD_MODNAME='"myapp"' -c -o
/home/appuser/src/codebase/ecl/modules/myapp.o
/home/appuser/src/codebase/ecl/modules/myapp.c
In file included from /usr/xenomai/include/trank/trank.h:21,
                 from /usr/xenomai/include/trank/native/timer.h:22,
                 from /home/appuser/src/codebase/ecl/modules/myapp.c:19:
/usr/xenomai/include/boilerplate/compiler.h:23: warning: "container_of"
redefined
 #define container_of(ptr, type, member)     \

In file included from ./include/linux/list.h:9,
                 from ./include/linux/module.h:9,
                 from /home/appuser/src/codebase/ecl/modules/myapp.c:7:
./include/linux/kernel.h:1000: note: this is the location of the previous
definition
 #define container_of(ptr, type, member) ({    \

In file included from /usr/xenomai/include/copperplate/clockobj.h:22,
                 from /usr/xenomai/include/alchemy/timer.h:22,
                 from /usr/xenomai/include/trank/native/timer.h:23,
                 from /home/appuser/src/codebase/ecl/modules/myapp.c:19:
/usr/xenomai/include/cobalt/pthread.h:33:25: error: field sched_param has
incomplete type
   struct sched_param_ex sched_param;
                         ^~~~~~~~~~~
In file included from /usr/xenomai/include/copperplate/clockobj.h:23,
                 from /usr/xenomai/include/alchemy/timer.h:22,
                 from /usr/xenomai/include/trank/native/timer.h:23,
                 from /home/appuser/src/codebase/ecl/modules/myapp.c:19:
/usr/xenomai/include/xeno_config.h:74: warning:
"CONFIG_XENO_REVISION_LEVEL" redefined
 #define CONFIG_XENO_REVISION_LEVEL

In file included from ././include/linux/kconfig.h:5,
                 from <command-line>:
./include/generated/autoconf.h:1916: note: this is the location of the
previous definition
 #define CONFIG_XENO_REVISION_LEVEL 0

I really don't have a tutorial as to how a RTDM module should be compiled.
Can you tell me why the headers above seem to conflict?
thanks  -C Smith


On Wed, Oct 6, 2021 at 3:25 AM Jan Kiszka <jan.kiszka@siemens.com> wrote:

> On 06.10.21 09:40, C Smith via Xenomai wrote:
> > I have a legacy RTDM driver I am trying to port from Xenomai 2.6 to 3.1.
> I
> > am attempting to include the /usr/xenomai/include/trank headers. My app
> > uses some Alchemy API as well as RTDM API. In particular, rt_timer_read()
> > seems to require Alchemy. But when my code does
> > #include <native/timer.h>
> > I get this compiler error:
> > In file included from /home/csmith/src/app3-prog/modules/myapp.c:19:
> > /usr/xenomai/include/trank/native/timer.h:21:10: fatal error: errno.h: No
> > such file or directory
> >
> > I compiled with make V=1 and I will show you the whole gcc command line
> > (sorry it's long):
> >
> > gcc -Wp,-MD,/home/csmith/src/app3-prog/ecl/modules/.myapp.o.d  -nostdinc
> > -isystem /usr/lib/gcc/x86_64-redhat-linux/8/include -I./arch/x86/include
>
> errno.h is expected under the system headers path, which you overwrite
> to /usr/lib/gcc/x86_64-redhat-linux/8/include. Apparently, it's missing
> there.
>
> Jan
>
> > -I./arch/x86/include/generated  -I./include -I./arch/x86/include/uapi
> > -I./arch/x86/include/generated/uapi -I./include/uapi
> > -I./include/generated/uapi -include ./include/linux/kconfig.h -include
> > ./include/linux/compiler_types.h -D__KERNEL__ -Wall -Wundef
> > -Wstrict-prototypes -Wno-trigraphs -fno-strict-aliasing -fno-common
> > -fshort-wchar -Werror-implicit-function-declaration -Wno-format-security
> > -std=gnu89 -fno-PIE -mno-sse -mno-mmx -mno-sse2 -mno-3dnow -mno-avx -m64
> > -falign-jumps=1 -falign-loops=1 -mno-80387 -mno-fp-ret-in-387
> > -mpreferred-stack-boundary=3 -mskip-rax-setup -mtune=generic
> -mno-red-zone
> > -mcmodel=kernel -funit-at-a-time -DCONFIG_AS_CFI=1
> > -DCONFIG_AS_CFI_SIGNAL_FRAME=1 -DCONFIG_AS_CFI_SECTIONS=1
> > -DCONFIG_AS_FXSAVEQ=1 -DCONFIG_AS_SSSE3=1 -DCONFIG_AS_CRC32=1
> > -DCONFIG_AS_AVX=1 -DCONFIG_AS_AVX2=1 -DCONFIG_AS_AVX512=1
> > -DCONFIG_AS_SHA1_NI=1 -DCONFIG_AS_SHA256_NI=1 -pipe -Wno-sign-compare
> > -fno-asynchronous-unwind-tables -mindirect-branch=thunk-extern
> > -mindirect-branch-register -fno-jump-tables -Iarch/x86/xenomai/include
> > -Iinclude/xenomai -fno-delete-null-pointer-checks -Wno-frame-address
> > -Wno-format-truncation -Wno-format-overflow -Wno-int-in-bool-context -O2
> > --param=allow-store-data-races=0 -Wframe-larger-than=2048
> > -fstack-protector-strong -Wno-unused-but-set-variable
> > -Wno-unused-const-variable -fno-omit-frame-pointer
> > -fno-optimize-sibling-calls -fno-var-tracking-assignments -g -pg -mfentry
> > -DCC_USING_FENTRY -Wdeclaration-after-statement -Wno-pointer-sign
> > -Wno-stringop-truncation -fno-strict-overflow -fno-merge-all-constants
> > -fmerge-constants -fno-stack-check -fconserve-stack -Werror=implicit-int
> > -Werror=strict-prototypes -Werror=date-time
> > -Werror=incompatible-pointer-types -Werror=designated-init
> > -fmacro-prefix-map=./= -fcf-protection=none -Wno-packed-not-aligned
> > -I/lib/modules/4.19.89xeno3.1-i64x8632/build/include/xenomai
> > -I/lib/modules/4.19.89xeno3.1-i64x8632/build/include/xenomai/posix
> > -I/home/csmith/src/app3-prog -I/usr/xenomai/include/trank
> > -I/usr/xenomai/include -D__XENO_COMPAT__  -DMODULE
> >  -DKBUILD_BASENAME='"myapp"' -DKBUILD_MODNAME='"myapp"' -c -o
> > /home/csmith/src/app3-prog/modules/myapp.o
> > /home/csmith/src/app3-prog/modules/myapp.c
> >
> > How can I compile with the "trank" to get native/timer.h and
> > rt_timer_read() ?
> >
> > thanks, -C Smith
> >
>
> --
> Siemens AG, T RDA IOT
> Corporate Competence Center Embedded Linux
>

Re: timer.h in rtdm module

[Jan Kiszka]

On 07.10.21 10:11, C Smith wrote:
> Thanks for the insight. I removed the -isystem line, I don't know where
> it came from, I have legacy xeno 2.6 Makefiles. I added a few more paths
> to system headers. I am now getting a lot of redefined symbols errors. 
> Here is current attempt to compile: (this is compiled while standing in
> /usr/src/linux/ BTW)
> 
> gcc -Wp,-MD,/home/appuser/src/codebase/ecl/modules/.myapp.o.d -nostdinc
> -I./arch/x86/include -I./arch/x86/include/generated  -I./include
> -I./include/linux -I/usr/lib/gcc/x86_64-redhat-linux/8/include
>  -I./arch/x86/include/uapi -I./arch/x86/include/generated/uapi
> -I./include/uapi -I./include/generated/uapi -include
> ./include/linux/kconfig.h -include ./include/linux/compiler_types.h
> -I/usr/xenomai/include/cobalt -I/usr/include -D__KERNEL__ -Wall -Wundef
> -Wstrict-prototypes -Wno-trigraphs -fno-strict-aliasing -fno-common
> -fshort-wchar -Werror-implicit-function-declaration -Wno-format-security
> -std=gnu89 -fno-PIE -mno-sse -mno-mmx -mno-sse2 -mno-3dnow -mno-avx -m64
> -falign-jumps=1 -falign-loops=1 -mno-80387 -mno-fp-ret-in-387
> -mpreferred-stack-boundary=3 -mskip-rax-setup -mtune=generic
> -mno-red-zone -mcmodel=kernel -funit-at-a-time -DCONFIG_AS_CFI=1
                ^^^^^^^^^^^^^^^

> -DCONFIG_AS_CFI_SIGNAL_FRAME=1 -DCONFIG_AS_CFI_SECTIONS=1
> -DCONFIG_AS_FXSAVEQ=1 -DCONFIG_AS_SSSE3=1 -DCONFIG_AS_CRC32=1
> -DCONFIG_AS_AVX=1 -DCONFIG_AS_AVX2=1 -DCONFIG_AS_AVX512=1
> -DCONFIG_AS_SHA1_NI=1 -DCONFIG_AS_SHA256_NI=1 -pipe -Wno-sign-compare
> -fno-asynchronous-unwind-tables -mindirect-branch=thunk-extern
> -mindirect-branch-register -fno-jump-tables -Iarch/x86/xenomai/include
> -Iinclude/xenomai -fno-delete-null-pointer-checks -Wno-frame-address
> -Wno-format-truncation -Wno-format-overflow -Wno-int-in-bool-context -O2
> --param=allow-store-data-races=0 -Wframe-larger-than=2048
> -fstack-protector-strong -Wno-unused-but-set-variable
> -Wno-unused-const-variable -fno-omit-frame-pointer
> -fno-optimize-sibling-calls -fno-var-tracking-assignments -g -pg
> -mfentry -DCC_USING_FENTRY -Wdeclaration-after-statement
> -Wno-pointer-sign -Wno-stringop-truncation -fno-strict-overflow
> -fno-merge-all-constants -fmerge-constants -fno-stack-check
> -fconserve-stack -Werror=implicit-int -Werror=strict-prototypes
> -Werror=date-time -Werror=incompatible-pointer-types
> -Werror=designated-init -fmacro-prefix-map=./= -fcf-protection=none
> -Wno-packed-not-aligned
> -I/lib/modules/4.19.89xeno3.1-i64x8632/build/include/xenomai
> -I/lib/modules/4.19.89xeno3.1-i64x8632/build/include/xenomai/posix
> -I/home/appuser/src/codebase -I/usr/xenomai/include/trank
> -I/usr/xenomai/include -D__XENO_COMPAT__  -DMODULE
>  -DKBUILD_BASENAME='"myapp"' -DKBUILD_MODNAME='"myapp"' -c -o
> /home/appuser/src/codebase/ecl/modules/myapp.o
> /home/appuser/src/codebase/ecl/modules/myapp.c
> In file included from /usr/xenomai/include/trank/trank.h:21,
>                  from /usr/xenomai/include/trank/native/timer.h:22,
>                  from /home/appuser/src/codebase/ecl/modules/myapp.c:19:
> /usr/xenomai/include/boilerplate/compiler.h:23: warning: "container_of"
> redefined
>  #define container_of(ptr, type, member)     \
>  
> In file included from ./include/linux/list.h:9,
>                  from ./include/linux/module.h:9,
>                  from /home/appuser/src/codebase/ecl/modules/myapp.c:7:
> ./include/linux/kernel.h:1000: note: this is the location of the
            ^^^^^^^^^^^^^^

Your build configuration is completely messed up, using kernel settings
to compile a userspace program.

You usually just need

gcc -o my-app my-app.c $(xeno-config --skin=posix --clflags --ldflags)

Start from there, then add what you actually need.

Jan

-- 
Siemens AG, T RDA IOT
Corporate Competence Center Embedded Linux