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Posted to dev@nuttx.apache.org by Anjana <An...@tataelxsi.co.in.INVALID> on 2020/06/18 05:38:36 UTC
ELF Application Example(apps/examples/elf) undefined references issue
in symtab.c
Hello Team,
I have added ELF Binary Loader support for RX65N target.
I am currently testing my implementation using the apps/examples/elf/ example .
When I enable the apps/examples/elf/ example application, and compile, I am getting the below error in symtab.c (Symbol Table)
C:\cygwin64\home\USER\PR_To_Apache\Binary_Loader\incubator-nuttx\staging\libapps.a(symtab.home.USER.PR_To_Apache.Binary_Loader.incubator-nuttx-apps.examples.elf.o):(.rodata.g_elf_exports+0x14): undefined reference to `_fflush'
C:\cygwin64\home\USER\PR_To_Apache\Binary_Loader\incubator-nuttx\staging\libapps.a(symtab.home.USER.PR_To_Apache.Binary_Loader.incubator-nuttx-apps.examples.elf.o):(.rodata.g_elf_exports+0x1c): undefined reference to `_fopen'
C:\cygwin64\home\USER\PR_To_Apache\Binary_Loader\incubator-nuttx\staging\libapps.a(symtab.home.USER.PR_To_Apache.Binary_Loader.incubator-nuttx-apps.examples.elf.o):(.rodata.g_elf_exports+0x24): undefined reference to `_fprintf'
C:\cygwin64\home\USER\PR_To_Apache\Binary_Loader\incubator-nuttx\staging\libapps.a(symtab.home.USER.PR_To_Apache.Binary_Loader.incubator-nuttx-apps.examples.elf.o):(.rodata.g_elf_exports+0x2c): undefined reference to `_getpid'
C:\cygwin64\home\USER\PR_To_Apache\Binary_Loader\incubator-nuttx\staging\libapps.a(symtab.home.USER.PR_To_Apache.Binary_Loader.incubator-nuttx-apps.examples.elf.o):(.rodata.g_elf_exports+0x34): undefined reference to `_kill'
C:\cygwin64\home\USER\PR_To_Apache\Binary_Loader\incubator-nuttx\staging\libapps.a(symtab.home.USER.PR_To_Apache.Binary_Loader.incubator-nuttx-apps.examples.elf.o):(.rodata.g_elf_exports+0x3c): undefined reference to `_longjmp'
C:\cygwin64\home\USER\PR_To_Apache\Binary_Loader\incubator-nuttx\staging\libapps.a(symtab.home.USER.PR_To_Apache.Binary_Loader.incubator-nuttx-apps.examples.elf.o):(.rodata.g_elf_exports+0x44): undefined reference to `_memset'
C:\cygwin64\home\USER\PR_To_Apache\Binary_Loader\incubator-nuttx\staging\libapps.a(symtab.home.USER.PR_To_Apache.Binary_Loader.incubator-nuttx-apps.examples.elf.o):(.rodata.g_elf_exports+0x4c): undefined reference to `_nxsched_get_streams'
C:\cygwin64\home\USER\PR_To_Apache\Binary_Loader\incubator-nuttx\staging\libapps.a(symtab.home.USER.PR_To_Apache.Binary_Loader.incubator-nuttx-apps.examples.elf.o):(.rodata.g_elf_exports+0x54): undefined reference to `_printf'
C:\cygwin64\home\USER\PR_To_Apache\Binary_Loader\incubator-nuttx\staging\libapps.a(symtab.home.USER.PR_To_Apache.Binary_Loader.incubator-nuttx-apps.examples.elf.o):(.rodata.g_elf_exports+0x5c): undefined reference to `_pthread_attr_init'
C:\cygwin64\home\USER\PR_To_Apache\Binary_Loader\incubator-nuttx\staging\libapps.a(symtab.home.USER.PR_To_Apache.Binary_Loader.incubator-nuttx-apps.examples.elf.o):(.rodata.g_elf_exports+0x64): undefined reference to `_pthread_create'
C:\cygwin64\home\USER\PR_To_Apache\Binary_Loader\incubator-nuttx\staging\libapps.a(symtab.home.USER.PR_To_Apache.Binary_Loader.incubator-nuttx-apps.examples.elf.o):(.rodata.g_elf_exports+0x6c): undefined reference to `_pthread_exit'
C:\cygwin64\home\USER\PR_To_Apache\Binary_Loader\incubator-nuttx\staging\libapps.a(symtab.home.USER.PR_To_Apache.Binary_Loader.incubator-nuttx-apps.examples.elf.o):(.rodata.g_elf_exports+0x74): undefined reference to `_pthread_join'
.....
.....
The above error is obtained for all the symbols generated in symtab.c from mksymtab.sh.
Has anyone faced any similar issue?
Any help to resolve the issue would be really helpful.
Regards,
Anjana
________________________________
Disclaimer: This email and any files transmitted with it are confidential and intended solely for the use of the individual or entity to whom they are addressed. If you are not the intended recipient of this message , or if this message has been addressed to you in error, please immediately alert the sender by reply email and then delete this message and any attachments. If you are not the intended recipient, you are hereby notified that any use, dissemination, copying, or storage of this message or its attachments is strictly prohibited. Email transmission cannot be guaranteed to be secure or error-free, as information could be intercepted, corrupted, lost, destroyed, arrive late or incomplete, or contain viruses. The sender, therefore, does not accept liability for any errors, omissions or contaminations in the contents of this message which might have occurred as a result of email transmission. If verification is required, please request for a hard-copy version.
________________________________
Re: ELF Application Example(apps/examples/elf) undefined references
issue in symtab.c
Posted by "Ishikawa, Masayuki (SHES)" <Ma...@sony.com>.
Hi,
Perhaps I understand what happened to the rx65n target.
This might be a compiler issue that it generates external function symbols with an underscore.
According to gcc document, it says that:
===
Warning: the ‘-fleading-underscore’ switch causes GCC to generate code that is not binary compatible
with code generated without that switch. Use it to conform to a non-default application binary interface.
Not all targets provide complete support for this switch
===
I think rx-elf-gcc generates external function symbols with an underscore by default.
However, you can disable this by -fno-leading-underscore.
Also, you need to change some assembler code where they call external C functions
with an underscore.
I hope this helps.
Masayuki
________________________________
From: Anjana <An...@tataelxsi.co.in.INVALID>
Sent: Thursday, June 18, 2020 17:47
To: dev@nuttx.apache.org <de...@nuttx.apache.org>
Subject: Re: ELF Application Example(apps/examples/elf) undefined references issue in symtab.c
Hi,
I am not working on my github account branch, I am working by downloading the Apache NuttX codebase on my local PC.
I was thinking of checking it first on my local PC, and then merging it on github.
I have also observed the following, related to the issue observed :
1. I also observed in the apps/examples/elf/tests/mksymtab.sh, it is mentioned that
"If the toolchain does any kind of checking for function vs. data objects, then this could fail"
2. As per my understanding, it is possible that since in symtab.c, file all symbols are generated with "_(underscore)", eg: _fflush, _fopen, etc., but since the functions, _fflush, _fopen are not defined(Only fflush, fopen, etc are defined and not _fflush, _fopen), the undefined reference error is coming.
3. Also, In NuttX 8.2 version of code, just to confirm the cause of the issue, I was trying to edit the symtab.c(I understand that it is not right to edit symtab.c, but just to check the cause of the issue), and I replaced _fflush to fflush, and the error of undefined reference was not coming.
So, I think, the issue of undefined reference is coming because _fflush, _fopen are actully not defined, only fopen, fflush is defined.
So, I think when the compiler tries to map the symbols generated in symtab.c, are looked for
Regards,
Anjana
________________________________
From: Ishikawa, Masayuki (SHES) <Ma...@sony.com>
Sent: 18 June 2020 12:01
To: dev@nuttx.apache.org <de...@nuttx.apache.org>
Subject: Re: ELF Application Example(apps/examples/elf) undefined references issue in symtab.c
________________________________
**This is an external email. Please check the sender’s full email address (not just the sender name) and exercise caution before you respond or click any embedded link/attachment.**
________________________________
Hi,
Can you tell us your github account and the branch in which you are
currently having trouble so that we can reproduce the errors?
Masayuki
________________________________
From: Anjana <An...@tataelxsi.co.in.INVALID>
Sent: Thursday, June 18, 2020 15:23
To: dev@nuttx.apache.org <de...@nuttx.apache.org>
Subject: Re: ELF Application Example(apps/examples/elf) undefined references issue in symtab.c
Yes, I have added CELFFLAGS, CELFFLAGS, LDELFFLAGS in Make.defs file
________________________________
From: Ishikawa, Masayuki (SHES) <Ma...@sony.com>
Sent: 18 June 2020 11:33
To: dev@nuttx.apache.org <de...@nuttx.apache.org>
Subject: Re: ELF Application Example(apps/examples/elf) undefined references issue in symtab.c
________________________________
**This is an external email. Please check the sender’s full email address (not just the sender name) and exercise caution before you respond or click any embedded link/attachment.**
________________________________
Hi Anjana,
Did you add some flags (i.e. CELFFLAGS, CXXELFFLAGS and LDELFFLAGS) to scripts/Make.defs?
The flags are needed to build elf modules.
Regards,
Masayuki
________________________________
差出人: Anjana <An...@tataelxsi.co.in.INVALID>
送信日時: 2020年6月18日 14:38
宛先: dev@nuttx.apache.org <de...@nuttx.apache.org>
件名: ELF Application Example(apps/examples/elf) undefined references issue in symtab.c
Hello Team,
I have added ELF Binary Loader support for RX65N target.
I am currently testing my implementation using the apps/examples/elf/ example .
When I enable the apps/examples/elf/ example application, and compile, I am getting the below error in symtab.c (Symbol Table)
C:\cygwin64\home\USER\PR_To_Apache\Binary_Loader\incubator-nuttx\staging\libapps.a(symtab.home.USER.PR_To_Apache.Binary_Loader.incubator-nuttx-apps.examples.elf.o):(.rodata.g_elf_exports+0x14): undefined reference to `_fflush'
C:\cygwin64\home\USER\PR_To_Apache\Binary_Loader\incubator-nuttx\staging\libapps.a(symtab.home.USER.PR_To_Apache.Binary_Loader.incubator-nuttx-apps.examples.elf.o):(.rodata.g_elf_exports+0x1c): undefined reference to `_fopen'
C:\cygwin64\home\USER\PR_To_Apache\Binary_Loader\incubator-nuttx\staging\libapps.a(symtab.home.USER.PR_To_Apache.Binary_Loader.incubator-nuttx-apps.examples.elf.o):(.rodata.g_elf_exports+0x24): undefined reference to `_fprintf'
C:\cygwin64\home\USER\PR_To_Apache\Binary_Loader\incubator-nuttx\staging\libapps.a(symtab.home.USER.PR_To_Apache.Binary_Loader.incubator-nuttx-apps.examples.elf.o):(.rodata.g_elf_exports+0x2c): undefined reference to `_getpid'
C:\cygwin64\home\USER\PR_To_Apache\Binary_Loader\incubator-nuttx\staging\libapps.a(symtab.home.USER.PR_To_Apache.Binary_Loader.incubator-nuttx-apps.examples.elf.o):(.rodata.g_elf_exports+0x34): undefined reference to `_kill'
C:\cygwin64\home\USER\PR_To_Apache\Binary_Loader\incubator-nuttx\staging\libapps.a(symtab.home.USER.PR_To_Apache.Binary_Loader.incubator-nuttx-apps.examples.elf.o):(.rodata.g_elf_exports+0x3c): undefined reference to `_longjmp'
C:\cygwin64\home\USER\PR_To_Apache\Binary_Loader\incubator-nuttx\staging\libapps.a(symtab.home.USER.PR_To_Apache.Binary_Loader.incubator-nuttx-apps.examples.elf.o):(.rodata.g_elf_exports+0x44): undefined reference to `_memset'
C:\cygwin64\home\USER\PR_To_Apache\Binary_Loader\incubator-nuttx\staging\libapps.a(symtab.home.USER.PR_To_Apache.Binary_Loader.incubator-nuttx-apps.examples.elf.o):(.rodata.g_elf_exports+0x4c): undefined reference to `_nxsched_get_streams'
C:\cygwin64\home\USER\PR_To_Apache\Binary_Loader\incubator-nuttx\staging\libapps.a(symtab.home.USER.PR_To_Apache.Binary_Loader.incubator-nuttx-apps.examples.elf.o):(.rodata.g_elf_exports+0x54): undefined reference to `_printf'
C:\cygwin64\home\USER\PR_To_Apache\Binary_Loader\incubator-nuttx\staging\libapps.a(symtab.home.USER.PR_To_Apache.Binary_Loader.incubator-nuttx-apps.examples.elf.o):(.rodata.g_elf_exports+0x5c): undefined reference to `_pthread_attr_init'
C:\cygwin64\home\USER\PR_To_Apache\Binary_Loader\incubator-nuttx\staging\libapps.a(symtab.home.USER.PR_To_Apache.Binary_Loader.incubator-nuttx-apps.examples.elf.o):(.rodata.g_elf_exports+0x64): undefined reference to `_pthread_create'
C:\cygwin64\home\USER\PR_To_Apache\Binary_Loader\incubator-nuttx\staging\libapps.a(symtab.home.USER.PR_To_Apache.Binary_Loader.incubator-nuttx-apps.examples.elf.o):(.rodata.g_elf_exports+0x6c): undefined reference to `_pthread_exit'
C:\cygwin64\home\USER\PR_To_Apache\Binary_Loader\incubator-nuttx\staging\libapps.a(symtab.home.USER.PR_To_Apache.Binary_Loader.incubator-nuttx-apps.examples.elf.o):(.rodata.g_elf_exports+0x74): undefined reference to `_pthread_join'
.....
.....
The above error is obtained for all the symbols generated in symtab.c from mksymtab.sh.
Has anyone faced any similar issue?
Any help to resolve the issue would be really helpful.
Regards,
Anjana
________________________________
Disclaimer: This email and any files transmitted with it are confidential and intended solely for the use of the individual or entity to whom they are addressed. If you are not the intended recipient of this message , or if this message has been addressed to you in error, please immediately alert the sender by reply email and then delete this message and any attachments. If you are not the intended recipient, you are hereby notified that any use, dissemination, copying, or storage of this message or its attachments is strictly prohibited. Email transmission cannot be guaranteed to be secure or error-free, as information could be intercepted, corrupted, lost, destroyed, arrive late or incomplete, or contain viruses. The sender, therefore, does not accept liability for any errors, omissions or contaminations in the contents of this message which might have occurred as a result of email transmission. If verification is required, please request for a hard-copy version.
________________________________
Re: ELF Application Example(apps/examples/elf) undefined references
issue in symtab.c
Posted by Anjana <An...@tataelxsi.co.in.INVALID>.
Hi,
I am not working on my github account branch, I am working by downloading the Apache NuttX codebase on my local PC.
I was thinking of checking it first on my local PC, and then merging it on github.
I have also observed the following, related to the issue observed :
1. I also observed in the apps/examples/elf/tests/mksymtab.sh, it is mentioned that
"If the toolchain does any kind of checking for function vs. data objects, then this could fail"
2. As per my understanding, it is possible that since in symtab.c, file all symbols are generated with "_(underscore)", eg: _fflush, _fopen, etc., but since the functions, _fflush, _fopen are not defined(Only fflush, fopen, etc are defined and not _fflush, _fopen), the undefined reference error is coming.
3. Also, In NuttX 8.2 version of code, just to confirm the cause of the issue, I was trying to edit the symtab.c(I understand that it is not right to edit symtab.c, but just to check the cause of the issue), and I replaced _fflush to fflush, and the error of undefined reference was not coming.
So, I think, the issue of undefined reference is coming because _fflush, _fopen are actully not defined, only fopen, fflush is defined.
So, I think when the compiler tries to map the symbols generated in symtab.c, are looked for
Regards,
Anjana
________________________________
From: Ishikawa, Masayuki (SHES) <Ma...@sony.com>
Sent: 18 June 2020 12:01
To: dev@nuttx.apache.org <de...@nuttx.apache.org>
Subject: Re: ELF Application Example(apps/examples/elf) undefined references issue in symtab.c
________________________________
**This is an external email. Please check the sender’s full email address (not just the sender name) and exercise caution before you respond or click any embedded link/attachment.**
________________________________
Hi,
Can you tell us your github account and the branch in which you are
currently having trouble so that we can reproduce the errors?
Masayuki
________________________________
From: Anjana <An...@tataelxsi.co.in.INVALID>
Sent: Thursday, June 18, 2020 15:23
To: dev@nuttx.apache.org <de...@nuttx.apache.org>
Subject: Re: ELF Application Example(apps/examples/elf) undefined references issue in symtab.c
Yes, I have added CELFFLAGS, CELFFLAGS, LDELFFLAGS in Make.defs file
________________________________
From: Ishikawa, Masayuki (SHES) <Ma...@sony.com>
Sent: 18 June 2020 11:33
To: dev@nuttx.apache.org <de...@nuttx.apache.org>
Subject: Re: ELF Application Example(apps/examples/elf) undefined references issue in symtab.c
________________________________
**This is an external email. Please check the sender’s full email address (not just the sender name) and exercise caution before you respond or click any embedded link/attachment.**
________________________________
Hi Anjana,
Did you add some flags (i.e. CELFFLAGS, CXXELFFLAGS and LDELFFLAGS) to scripts/Make.defs?
The flags are needed to build elf modules.
Regards,
Masayuki
________________________________
差出人: Anjana <An...@tataelxsi.co.in.INVALID>
送信日時: 2020年6月18日 14:38
宛先: dev@nuttx.apache.org <de...@nuttx.apache.org>
件名: ELF Application Example(apps/examples/elf) undefined references issue in symtab.c
Hello Team,
I have added ELF Binary Loader support for RX65N target.
I am currently testing my implementation using the apps/examples/elf/ example .
When I enable the apps/examples/elf/ example application, and compile, I am getting the below error in symtab.c (Symbol Table)
C:\cygwin64\home\USER\PR_To_Apache\Binary_Loader\incubator-nuttx\staging\libapps.a(symtab.home.USER.PR_To_Apache.Binary_Loader.incubator-nuttx-apps.examples.elf.o):(.rodata.g_elf_exports+0x14): undefined reference to `_fflush'
C:\cygwin64\home\USER\PR_To_Apache\Binary_Loader\incubator-nuttx\staging\libapps.a(symtab.home.USER.PR_To_Apache.Binary_Loader.incubator-nuttx-apps.examples.elf.o):(.rodata.g_elf_exports+0x1c): undefined reference to `_fopen'
C:\cygwin64\home\USER\PR_To_Apache\Binary_Loader\incubator-nuttx\staging\libapps.a(symtab.home.USER.PR_To_Apache.Binary_Loader.incubator-nuttx-apps.examples.elf.o):(.rodata.g_elf_exports+0x24): undefined reference to `_fprintf'
C:\cygwin64\home\USER\PR_To_Apache\Binary_Loader\incubator-nuttx\staging\libapps.a(symtab.home.USER.PR_To_Apache.Binary_Loader.incubator-nuttx-apps.examples.elf.o):(.rodata.g_elf_exports+0x2c): undefined reference to `_getpid'
C:\cygwin64\home\USER\PR_To_Apache\Binary_Loader\incubator-nuttx\staging\libapps.a(symtab.home.USER.PR_To_Apache.Binary_Loader.incubator-nuttx-apps.examples.elf.o):(.rodata.g_elf_exports+0x34): undefined reference to `_kill'
C:\cygwin64\home\USER\PR_To_Apache\Binary_Loader\incubator-nuttx\staging\libapps.a(symtab.home.USER.PR_To_Apache.Binary_Loader.incubator-nuttx-apps.examples.elf.o):(.rodata.g_elf_exports+0x3c): undefined reference to `_longjmp'
C:\cygwin64\home\USER\PR_To_Apache\Binary_Loader\incubator-nuttx\staging\libapps.a(symtab.home.USER.PR_To_Apache.Binary_Loader.incubator-nuttx-apps.examples.elf.o):(.rodata.g_elf_exports+0x44): undefined reference to `_memset'
C:\cygwin64\home\USER\PR_To_Apache\Binary_Loader\incubator-nuttx\staging\libapps.a(symtab.home.USER.PR_To_Apache.Binary_Loader.incubator-nuttx-apps.examples.elf.o):(.rodata.g_elf_exports+0x4c): undefined reference to `_nxsched_get_streams'
C:\cygwin64\home\USER\PR_To_Apache\Binary_Loader\incubator-nuttx\staging\libapps.a(symtab.home.USER.PR_To_Apache.Binary_Loader.incubator-nuttx-apps.examples.elf.o):(.rodata.g_elf_exports+0x54): undefined reference to `_printf'
C:\cygwin64\home\USER\PR_To_Apache\Binary_Loader\incubator-nuttx\staging\libapps.a(symtab.home.USER.PR_To_Apache.Binary_Loader.incubator-nuttx-apps.examples.elf.o):(.rodata.g_elf_exports+0x5c): undefined reference to `_pthread_attr_init'
C:\cygwin64\home\USER\PR_To_Apache\Binary_Loader\incubator-nuttx\staging\libapps.a(symtab.home.USER.PR_To_Apache.Binary_Loader.incubator-nuttx-apps.examples.elf.o):(.rodata.g_elf_exports+0x64): undefined reference to `_pthread_create'
C:\cygwin64\home\USER\PR_To_Apache\Binary_Loader\incubator-nuttx\staging\libapps.a(symtab.home.USER.PR_To_Apache.Binary_Loader.incubator-nuttx-apps.examples.elf.o):(.rodata.g_elf_exports+0x6c): undefined reference to `_pthread_exit'
C:\cygwin64\home\USER\PR_To_Apache\Binary_Loader\incubator-nuttx\staging\libapps.a(symtab.home.USER.PR_To_Apache.Binary_Loader.incubator-nuttx-apps.examples.elf.o):(.rodata.g_elf_exports+0x74): undefined reference to `_pthread_join'
.....
.....
The above error is obtained for all the symbols generated in symtab.c from mksymtab.sh.
Has anyone faced any similar issue?
Any help to resolve the issue would be really helpful.
Regards,
Anjana
________________________________
Disclaimer: This email and any files transmitted with it are confidential and intended solely for the use of the individual or entity to whom they are addressed. If you are not the intended recipient of this message , or if this message has been addressed to you in error, please immediately alert the sender by reply email and then delete this message and any attachments. If you are not the intended recipient, you are hereby notified that any use, dissemination, copying, or storage of this message or its attachments is strictly prohibited. Email transmission cannot be guaranteed to be secure or error-free, as information could be intercepted, corrupted, lost, destroyed, arrive late or incomplete, or contain viruses. The sender, therefore, does not accept liability for any errors, omissions or contaminations in the contents of this message which might have occurred as a result of email transmission. If verification is required, please request for a hard-copy version.
________________________________
Re: ELF Application Example(apps/examples/elf) undefined references
issue in symtab.c
Posted by "Ishikawa, Masayuki (SHES)" <Ma...@sony.com>.
Hi,
Can you tell us your github account and the branch in which you are
currently having trouble so that we can reproduce the errors?
Masayuki
________________________________
From: Anjana <An...@tataelxsi.co.in.INVALID>
Sent: Thursday, June 18, 2020 15:23
To: dev@nuttx.apache.org <de...@nuttx.apache.org>
Subject: Re: ELF Application Example(apps/examples/elf) undefined references issue in symtab.c
Yes, I have added CELFFLAGS, CELFFLAGS, LDELFFLAGS in Make.defs file
________________________________
From: Ishikawa, Masayuki (SHES) <Ma...@sony.com>
Sent: 18 June 2020 11:33
To: dev@nuttx.apache.org <de...@nuttx.apache.org>
Subject: Re: ELF Application Example(apps/examples/elf) undefined references issue in symtab.c
________________________________
**This is an external email. Please check the sender’s full email address (not just the sender name) and exercise caution before you respond or click any embedded link/attachment.**
________________________________
Hi Anjana,
Did you add some flags (i.e. CELFFLAGS, CXXELFFLAGS and LDELFFLAGS) to scripts/Make.defs?
The flags are needed to build elf modules.
Regards,
Masayuki
________________________________
差出人: Anjana <An...@tataelxsi.co.in.INVALID>
送信日時: 2020年6月18日 14:38
宛先: dev@nuttx.apache.org <de...@nuttx.apache.org>
件名: ELF Application Example(apps/examples/elf) undefined references issue in symtab.c
Hello Team,
I have added ELF Binary Loader support for RX65N target.
I am currently testing my implementation using the apps/examples/elf/ example .
When I enable the apps/examples/elf/ example application, and compile, I am getting the below error in symtab.c (Symbol Table)
C:\cygwin64\home\USER\PR_To_Apache\Binary_Loader\incubator-nuttx\staging\libapps.a(symtab.home.USER.PR_To_Apache.Binary_Loader.incubator-nuttx-apps.examples.elf.o):(.rodata.g_elf_exports+0x14): undefined reference to `_fflush'
C:\cygwin64\home\USER\PR_To_Apache\Binary_Loader\incubator-nuttx\staging\libapps.a(symtab.home.USER.PR_To_Apache.Binary_Loader.incubator-nuttx-apps.examples.elf.o):(.rodata.g_elf_exports+0x1c): undefined reference to `_fopen'
C:\cygwin64\home\USER\PR_To_Apache\Binary_Loader\incubator-nuttx\staging\libapps.a(symtab.home.USER.PR_To_Apache.Binary_Loader.incubator-nuttx-apps.examples.elf.o):(.rodata.g_elf_exports+0x24): undefined reference to `_fprintf'
C:\cygwin64\home\USER\PR_To_Apache\Binary_Loader\incubator-nuttx\staging\libapps.a(symtab.home.USER.PR_To_Apache.Binary_Loader.incubator-nuttx-apps.examples.elf.o):(.rodata.g_elf_exports+0x2c): undefined reference to `_getpid'
C:\cygwin64\home\USER\PR_To_Apache\Binary_Loader\incubator-nuttx\staging\libapps.a(symtab.home.USER.PR_To_Apache.Binary_Loader.incubator-nuttx-apps.examples.elf.o):(.rodata.g_elf_exports+0x34): undefined reference to `_kill'
C:\cygwin64\home\USER\PR_To_Apache\Binary_Loader\incubator-nuttx\staging\libapps.a(symtab.home.USER.PR_To_Apache.Binary_Loader.incubator-nuttx-apps.examples.elf.o):(.rodata.g_elf_exports+0x3c): undefined reference to `_longjmp'
C:\cygwin64\home\USER\PR_To_Apache\Binary_Loader\incubator-nuttx\staging\libapps.a(symtab.home.USER.PR_To_Apache.Binary_Loader.incubator-nuttx-apps.examples.elf.o):(.rodata.g_elf_exports+0x44): undefined reference to `_memset'
C:\cygwin64\home\USER\PR_To_Apache\Binary_Loader\incubator-nuttx\staging\libapps.a(symtab.home.USER.PR_To_Apache.Binary_Loader.incubator-nuttx-apps.examples.elf.o):(.rodata.g_elf_exports+0x4c): undefined reference to `_nxsched_get_streams'
C:\cygwin64\home\USER\PR_To_Apache\Binary_Loader\incubator-nuttx\staging\libapps.a(symtab.home.USER.PR_To_Apache.Binary_Loader.incubator-nuttx-apps.examples.elf.o):(.rodata.g_elf_exports+0x54): undefined reference to `_printf'
C:\cygwin64\home\USER\PR_To_Apache\Binary_Loader\incubator-nuttx\staging\libapps.a(symtab.home.USER.PR_To_Apache.Binary_Loader.incubator-nuttx-apps.examples.elf.o):(.rodata.g_elf_exports+0x5c): undefined reference to `_pthread_attr_init'
C:\cygwin64\home\USER\PR_To_Apache\Binary_Loader\incubator-nuttx\staging\libapps.a(symtab.home.USER.PR_To_Apache.Binary_Loader.incubator-nuttx-apps.examples.elf.o):(.rodata.g_elf_exports+0x64): undefined reference to `_pthread_create'
C:\cygwin64\home\USER\PR_To_Apache\Binary_Loader\incubator-nuttx\staging\libapps.a(symtab.home.USER.PR_To_Apache.Binary_Loader.incubator-nuttx-apps.examples.elf.o):(.rodata.g_elf_exports+0x6c): undefined reference to `_pthread_exit'
C:\cygwin64\home\USER\PR_To_Apache\Binary_Loader\incubator-nuttx\staging\libapps.a(symtab.home.USER.PR_To_Apache.Binary_Loader.incubator-nuttx-apps.examples.elf.o):(.rodata.g_elf_exports+0x74): undefined reference to `_pthread_join'
.....
.....
The above error is obtained for all the symbols generated in symtab.c from mksymtab.sh.
Has anyone faced any similar issue?
Any help to resolve the issue would be really helpful.
Regards,
Anjana
________________________________
Disclaimer: This email and any files transmitted with it are confidential and intended solely for the use of the individual or entity to whom they are addressed. If you are not the intended recipient of this message , or if this message has been addressed to you in error, please immediately alert the sender by reply email and then delete this message and any attachments. If you are not the intended recipient, you are hereby notified that any use, dissemination, copying, or storage of this message or its attachments is strictly prohibited. Email transmission cannot be guaranteed to be secure or error-free, as information could be intercepted, corrupted, lost, destroyed, arrive late or incomplete, or contain viruses. The sender, therefore, does not accept liability for any errors, omissions or contaminations in the contents of this message which might have occurred as a result of email transmission. If verification is required, please request for a hard-copy version.
________________________________
Re: ELF Application Example(apps/examples/elf) undefined references
issue in symtab.c
Posted by Anjana <An...@tataelxsi.co.in.INVALID>.
Yes, I have added CELFFLAGS, CELFFLAGS, LDELFFLAGS in Make.defs file
________________________________
From: Ishikawa, Masayuki (SHES) <Ma...@sony.com>
Sent: 18 June 2020 11:33
To: dev@nuttx.apache.org <de...@nuttx.apache.org>
Subject: Re: ELF Application Example(apps/examples/elf) undefined references issue in symtab.c
________________________________
**This is an external email. Please check the sender’s full email address (not just the sender name) and exercise caution before you respond or click any embedded link/attachment.**
________________________________
Hi Anjana,
Did you add some flags (i.e. CELFFLAGS, CXXELFFLAGS and LDELFFLAGS) to scripts/Make.defs?
The flags are needed to build elf modules.
Regards,
Masayuki
________________________________
差出人: Anjana <An...@tataelxsi.co.in.INVALID>
送信日時: 2020年6月18日 14:38
宛先: dev@nuttx.apache.org <de...@nuttx.apache.org>
件名: ELF Application Example(apps/examples/elf) undefined references issue in symtab.c
Hello Team,
I have added ELF Binary Loader support for RX65N target.
I am currently testing my implementation using the apps/examples/elf/ example .
When I enable the apps/examples/elf/ example application, and compile, I am getting the below error in symtab.c (Symbol Table)
C:\cygwin64\home\USER\PR_To_Apache\Binary_Loader\incubator-nuttx\staging\libapps.a(symtab.home.USER.PR_To_Apache.Binary_Loader.incubator-nuttx-apps.examples.elf.o):(.rodata.g_elf_exports+0x14): undefined reference to `_fflush'
C:\cygwin64\home\USER\PR_To_Apache\Binary_Loader\incubator-nuttx\staging\libapps.a(symtab.home.USER.PR_To_Apache.Binary_Loader.incubator-nuttx-apps.examples.elf.o):(.rodata.g_elf_exports+0x1c): undefined reference to `_fopen'
C:\cygwin64\home\USER\PR_To_Apache\Binary_Loader\incubator-nuttx\staging\libapps.a(symtab.home.USER.PR_To_Apache.Binary_Loader.incubator-nuttx-apps.examples.elf.o):(.rodata.g_elf_exports+0x24): undefined reference to `_fprintf'
C:\cygwin64\home\USER\PR_To_Apache\Binary_Loader\incubator-nuttx\staging\libapps.a(symtab.home.USER.PR_To_Apache.Binary_Loader.incubator-nuttx-apps.examples.elf.o):(.rodata.g_elf_exports+0x2c): undefined reference to `_getpid'
C:\cygwin64\home\USER\PR_To_Apache\Binary_Loader\incubator-nuttx\staging\libapps.a(symtab.home.USER.PR_To_Apache.Binary_Loader.incubator-nuttx-apps.examples.elf.o):(.rodata.g_elf_exports+0x34): undefined reference to `_kill'
C:\cygwin64\home\USER\PR_To_Apache\Binary_Loader\incubator-nuttx\staging\libapps.a(symtab.home.USER.PR_To_Apache.Binary_Loader.incubator-nuttx-apps.examples.elf.o):(.rodata.g_elf_exports+0x3c): undefined reference to `_longjmp'
C:\cygwin64\home\USER\PR_To_Apache\Binary_Loader\incubator-nuttx\staging\libapps.a(symtab.home.USER.PR_To_Apache.Binary_Loader.incubator-nuttx-apps.examples.elf.o):(.rodata.g_elf_exports+0x44): undefined reference to `_memset'
C:\cygwin64\home\USER\PR_To_Apache\Binary_Loader\incubator-nuttx\staging\libapps.a(symtab.home.USER.PR_To_Apache.Binary_Loader.incubator-nuttx-apps.examples.elf.o):(.rodata.g_elf_exports+0x4c): undefined reference to `_nxsched_get_streams'
C:\cygwin64\home\USER\PR_To_Apache\Binary_Loader\incubator-nuttx\staging\libapps.a(symtab.home.USER.PR_To_Apache.Binary_Loader.incubator-nuttx-apps.examples.elf.o):(.rodata.g_elf_exports+0x54): undefined reference to `_printf'
C:\cygwin64\home\USER\PR_To_Apache\Binary_Loader\incubator-nuttx\staging\libapps.a(symtab.home.USER.PR_To_Apache.Binary_Loader.incubator-nuttx-apps.examples.elf.o):(.rodata.g_elf_exports+0x5c): undefined reference to `_pthread_attr_init'
C:\cygwin64\home\USER\PR_To_Apache\Binary_Loader\incubator-nuttx\staging\libapps.a(symtab.home.USER.PR_To_Apache.Binary_Loader.incubator-nuttx-apps.examples.elf.o):(.rodata.g_elf_exports+0x64): undefined reference to `_pthread_create'
C:\cygwin64\home\USER\PR_To_Apache\Binary_Loader\incubator-nuttx\staging\libapps.a(symtab.home.USER.PR_To_Apache.Binary_Loader.incubator-nuttx-apps.examples.elf.o):(.rodata.g_elf_exports+0x6c): undefined reference to `_pthread_exit'
C:\cygwin64\home\USER\PR_To_Apache\Binary_Loader\incubator-nuttx\staging\libapps.a(symtab.home.USER.PR_To_Apache.Binary_Loader.incubator-nuttx-apps.examples.elf.o):(.rodata.g_elf_exports+0x74): undefined reference to `_pthread_join'
.....
.....
The above error is obtained for all the symbols generated in symtab.c from mksymtab.sh.
Has anyone faced any similar issue?
Any help to resolve the issue would be really helpful.
Regards,
Anjana
________________________________
Disclaimer: This email and any files transmitted with it are confidential and intended solely for the use of the individual or entity to whom they are addressed. If you are not the intended recipient of this message , or if this message has been addressed to you in error, please immediately alert the sender by reply email and then delete this message and any attachments. If you are not the intended recipient, you are hereby notified that any use, dissemination, copying, or storage of this message or its attachments is strictly prohibited. Email transmission cannot be guaranteed to be secure or error-free, as information could be intercepted, corrupted, lost, destroyed, arrive late or incomplete, or contain viruses. The sender, therefore, does not accept liability for any errors, omissions or contaminations in the contents of this message which might have occurred as a result of email transmission. If verification is required, please request for a hard-copy version.
________________________________
Re: ELF Application Example(apps/examples/elf) undefined references
issue in symtab.c
Posted by "Ishikawa, Masayuki (SHES)" <Ma...@sony.com>.
Hi Anjana,
Did you add some flags (i.e. CELFFLAGS, CXXELFFLAGS and LDELFFLAGS) to scripts/Make.defs?
The flags are needed to build elf modules.
Regards,
Masayuki
________________________________
差出人: Anjana <An...@tataelxsi.co.in.INVALID>
送信日時: 2020年6月18日 14:38
宛先: dev@nuttx.apache.org <de...@nuttx.apache.org>
件名: ELF Application Example(apps/examples/elf) undefined references issue in symtab.c
Hello Team,
I have added ELF Binary Loader support for RX65N target.
I am currently testing my implementation using the apps/examples/elf/ example .
When I enable the apps/examples/elf/ example application, and compile, I am getting the below error in symtab.c (Symbol Table)
C:\cygwin64\home\USER\PR_To_Apache\Binary_Loader\incubator-nuttx\staging\libapps.a(symtab.home.USER.PR_To_Apache.Binary_Loader.incubator-nuttx-apps.examples.elf.o):(.rodata.g_elf_exports+0x14): undefined reference to `_fflush'
C:\cygwin64\home\USER\PR_To_Apache\Binary_Loader\incubator-nuttx\staging\libapps.a(symtab.home.USER.PR_To_Apache.Binary_Loader.incubator-nuttx-apps.examples.elf.o):(.rodata.g_elf_exports+0x1c): undefined reference to `_fopen'
C:\cygwin64\home\USER\PR_To_Apache\Binary_Loader\incubator-nuttx\staging\libapps.a(symtab.home.USER.PR_To_Apache.Binary_Loader.incubator-nuttx-apps.examples.elf.o):(.rodata.g_elf_exports+0x24): undefined reference to `_fprintf'
C:\cygwin64\home\USER\PR_To_Apache\Binary_Loader\incubator-nuttx\staging\libapps.a(symtab.home.USER.PR_To_Apache.Binary_Loader.incubator-nuttx-apps.examples.elf.o):(.rodata.g_elf_exports+0x2c): undefined reference to `_getpid'
C:\cygwin64\home\USER\PR_To_Apache\Binary_Loader\incubator-nuttx\staging\libapps.a(symtab.home.USER.PR_To_Apache.Binary_Loader.incubator-nuttx-apps.examples.elf.o):(.rodata.g_elf_exports+0x34): undefined reference to `_kill'
C:\cygwin64\home\USER\PR_To_Apache\Binary_Loader\incubator-nuttx\staging\libapps.a(symtab.home.USER.PR_To_Apache.Binary_Loader.incubator-nuttx-apps.examples.elf.o):(.rodata.g_elf_exports+0x3c): undefined reference to `_longjmp'
C:\cygwin64\home\USER\PR_To_Apache\Binary_Loader\incubator-nuttx\staging\libapps.a(symtab.home.USER.PR_To_Apache.Binary_Loader.incubator-nuttx-apps.examples.elf.o):(.rodata.g_elf_exports+0x44): undefined reference to `_memset'
C:\cygwin64\home\USER\PR_To_Apache\Binary_Loader\incubator-nuttx\staging\libapps.a(symtab.home.USER.PR_To_Apache.Binary_Loader.incubator-nuttx-apps.examples.elf.o):(.rodata.g_elf_exports+0x4c): undefined reference to `_nxsched_get_streams'
C:\cygwin64\home\USER\PR_To_Apache\Binary_Loader\incubator-nuttx\staging\libapps.a(symtab.home.USER.PR_To_Apache.Binary_Loader.incubator-nuttx-apps.examples.elf.o):(.rodata.g_elf_exports+0x54): undefined reference to `_printf'
C:\cygwin64\home\USER\PR_To_Apache\Binary_Loader\incubator-nuttx\staging\libapps.a(symtab.home.USER.PR_To_Apache.Binary_Loader.incubator-nuttx-apps.examples.elf.o):(.rodata.g_elf_exports+0x5c): undefined reference to `_pthread_attr_init'
C:\cygwin64\home\USER\PR_To_Apache\Binary_Loader\incubator-nuttx\staging\libapps.a(symtab.home.USER.PR_To_Apache.Binary_Loader.incubator-nuttx-apps.examples.elf.o):(.rodata.g_elf_exports+0x64): undefined reference to `_pthread_create'
C:\cygwin64\home\USER\PR_To_Apache\Binary_Loader\incubator-nuttx\staging\libapps.a(symtab.home.USER.PR_To_Apache.Binary_Loader.incubator-nuttx-apps.examples.elf.o):(.rodata.g_elf_exports+0x6c): undefined reference to `_pthread_exit'
C:\cygwin64\home\USER\PR_To_Apache\Binary_Loader\incubator-nuttx\staging\libapps.a(symtab.home.USER.PR_To_Apache.Binary_Loader.incubator-nuttx-apps.examples.elf.o):(.rodata.g_elf_exports+0x74): undefined reference to `_pthread_join'
.....
.....
The above error is obtained for all the symbols generated in symtab.c from mksymtab.sh.
Has anyone faced any similar issue?
Any help to resolve the issue would be really helpful.
Regards,
Anjana
________________________________
Disclaimer: This email and any files transmitted with it are confidential and intended solely for the use of the individual or entity to whom they are addressed. If you are not the intended recipient of this message , or if this message has been addressed to you in error, please immediately alert the sender by reply email and then delete this message and any attachments. If you are not the intended recipient, you are hereby notified that any use, dissemination, copying, or storage of this message or its attachments is strictly prohibited. Email transmission cannot be guaranteed to be secure or error-free, as information could be intercepted, corrupted, lost, destroyed, arrive late or incomplete, or contain viruses. The sender, therefore, does not accept liability for any errors, omissions or contaminations in the contents of this message which might have occurred as a result of email transmission. If verification is required, please request for a hard-copy version.
________________________________