Troubles building libcxx from svn source

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Troubles building libcxx from svn source

Eric Fiselier via cfe-dev

The directions I followed are here: https://clang.llvm.org/get_started.html (steps 1-7, including the optional ones).

I was very careful to type everything EXACTLY as specified (so all projects are in the correct directories).

After I ran 'cmake', everything looked fine, no error messages.

But when I try to build with 'make', when it gets to libcxx it has linker errors:

. . . [100%] Built target cxx_objects [100%] Linking CXX shared library ../../../lib/libc++.so CMakeFiles/cxx_objects.dir/__/src/locale.cpp.o: In function `std::__1::(anonymous namespace)::__throw_runtime_error(std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&)': locale.cpp:(.text.unlikely._ZNSt3__112_GLOBAL__N_1L21__throw_runtime_errorERKNS_12basic_stringIcNS_11char_traitsIcEENS_9allocatorIcEEEE+0xf): undefined reference to `__cxa_allocate_exception' locale.cpp:(.text.unlikely._ZNSt3__112_GLOBAL__N_1L21__throw_runtime_errorERKNS_12basic_stringIcNS_11char_traitsIcEENS_9allocatorIcEEEE+0x33): undefined reference to `__cxa_throw' locale.cpp:(.text.unlikely._ZNSt3__112_GLOBAL__N_1L21__throw_runtime_errorERKNS_12basic_stringIcNS_11char_traitsIcEENS_9allocatorIcEEEE+0x3e): undefined reference to `__cxa_free_exception' CMakeFiles/cxx_objects.dir/__/src/locale.cpp.o: In function `std::__1::ctype_byname<wchar_t>::do_widen(char) const': locale.cpp:(.text._ZNKSt3__112ctype_bynameIwE8do_widenEc+0x43): undefined reference to `__cxa_call_unexpected' CMakeFiles/cxx_objects.dir/__/src/locale.cpp.o: In function `std::__1::ctype_byname<wchar_t>::do_widen(char const*, char const*, wchar_t*) const': locale.cpp:(.text._ZNKSt3__112ctype_bynameIwE8do_widenEPKcS3_Pw+0x7a): undefined reference to `__cxa_call_unexpected' CMakeFiles/cxx_objects.dir/__/src/locale.cpp.o: In function `std::__1::ctype_byname<wchar_t>::do_narrow(wchar_t, char) const': locale.cpp:(.text._ZNKSt3__112ctype_bynameIwE9do_narrowEwc+0x46): undefined reference to `__cxa_call_unexpected' CMakeFiles/cxx_objects.dir/__/src/locale.cpp.o: In function `std::__1::ctype_byname<wchar_t>::do_narrow(wchar_t const*, wchar_t const*, char, char*) const': locale.cpp:(.text._ZNKSt3__112ctype_bynameIwE9do_narrowEPKwS3_cPc+0x8d): undefined reference to `__cxa_call_unexpected' CMakeFiles/cxx_objects.dir/__/src/locale.cpp.o: In function `std::__1::locale::__imp::use_facet(long) const [clone .part.18]': locale.cpp:(.text.unlikely._ZNKSt3__16locale5__imp9use_facetEl.part.18+0x7): undefined reference to `__cxa_allocate_exception' locale.cpp:(.text.unlikely._ZNKSt3__16locale5__imp9use_facetEl.part.18+0x28): undefined reference to `__cxa_throw' CMakeFiles/cxx_objects.dir/__/src/locale.cpp.o: In function `std::__1::__time_get_c_storage<char>::__weeks() const': locale.cpp:(.text._ZNKSt3__120__time_get_c_storageIcE7__weeksEv+0x21): undefined reference to `__cxa_guard_acquire' locale.cpp:(.text._ZNKSt3__120__time_get_c_storageIcE7__weeksEv+0x167): undefined reference to `__cxa_guard_release' locale.cpp:(.text._ZNKSt3__120__time_get_c_storageIcE7__weeksEv+0x178): undefined reference to `__cxa_guard_acquire' locale.cpp:(.text._ZNKSt3__120__time_get_c_storageIcE7__weeksEv+0x35a): undefined reference to `__cxa_guard_release' locale.cpp:(.text._ZNKSt3__120__time_get_c_storageIcE7__weeksEv+0x383): undefined reference to `__cxa_guard_abort' . . .

Fresh Ubuntu 17.04 install (X86) with the preinstalled gcc being used to build.

(neither clang nor libc++ are present in the default 17.04 release).




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Re: Troubles building libcxx from svn source

Eric Fiselier via cfe-dev


On 10/11/17 7:36 AM, Derrick Johnson via cfe-dev wrote:

> up vote0down votefavorite
> <https://stackoverflow.com/questions/46687323/linker-errors-building-libcxx-on-fresh-ubuntu-install#>
> <https://stackoverflow.com/questions/46687323/linker-errors-building-libcxx-on-fresh-ubuntu-install#>
>
>
> The directions I followed are here:
> https://clang.llvm.org/get_started.html (steps 1-7, including the
> optional ones).
>
> I was very careful to type everything EXACTLY as specified (so all
> projects are in the correct directories).
>
> After I ran 'cmake', everything looked fine, no error messages.
>
> But when I try to build with 'make', when it gets to libcxx it has
> linker errors:
>
> |. . . [100%] Built target cxx_objects [100%] Linking CXX shared library
> ../../../lib/libc++.so CMakeFiles/cxx_objects.dir/__/src/locale.cpp.o:
> In function `std::__1::(anonymous
> namespace)::__throw_runtime_error(std::__1::basic_string<char,
> std::__1::char_traits<char>, std::__1::allocator<char> > const&)':
> locale.cpp:(.text.unlikely._ZNSt3__112_GLOBAL__N_1L21__throw_runtime_errorERKNS_12basic_stringIcNS_11char_traitsIcEENS_9allocatorIcEEEE+0xf):
> undefined reference to `__cxa_allocate_exception'
> locale.cpp:(.text.unlikely._ZNSt3__112_GLOBAL__N_1L21__throw_runtime_errorERKNS_12basic_stringIcNS_11char_traitsIcEENS_9allocatorIcEEEE+0x33):
> undefined reference to `__cxa_throw'
> locale.cpp:(.text.unlikely._ZNSt3__112_GLOBAL__N_1L21__throw_runtime_errorERKNS_12basic_stringIcNS_11char_traitsIcEENS_9allocatorIcEEEE+0x3e):
> undefined reference to `__cxa_free_exception'
> CMakeFiles/cxx_objects.dir/__/src/locale.cpp.o: In function
> `std::__1::ctype_byname<wchar_t>::do_widen(char) const':
> locale.cpp:(.text._ZNKSt3__112ctype_bynameIwE8do_widenEc+0x43):
> undefined reference to `__cxa_call_unexpected'
> CMakeFiles/cxx_objects.dir/__/src/locale.cpp.o: In function
> `std::__1::ctype_byname<wchar_t>::do_widen(char const*, char const*,
> wchar_t*) const':
> locale.cpp:(.text._ZNKSt3__112ctype_bynameIwE8do_widenEPKcS3_Pw+0x7a):
> undefined reference to `__cxa_call_unexpected'
> CMakeFiles/cxx_objects.dir/__/src/locale.cpp.o: In function
> `std::__1::ctype_byname<wchar_t>::do_narrow(wchar_t, char) const':
> locale.cpp:(.text._ZNKSt3__112ctype_bynameIwE9do_narrowEwc+0x46):
> undefined reference to `__cxa_call_unexpected'
> CMakeFiles/cxx_objects.dir/__/src/locale.cpp.o: In function
> `std::__1::ctype_byname<wchar_t>::do_narrow(wchar_t const*, wchar_t
> const*, char, char*) const':
> locale.cpp:(.text._ZNKSt3__112ctype_bynameIwE9do_narrowEPKwS3_cPc+0x8d):
> undefined reference to `__cxa_call_unexpected'
> CMakeFiles/cxx_objects.dir/__/src/locale.cpp.o: In function
> `std::__1::locale::__imp::use_facet(long) const [clone .part.18]':
> locale.cpp:(.text.unlikely._ZNKSt3__16locale5__imp9use_facetEl.part.18+0x7):
> undefined reference to `__cxa_allocate_exception'
> locale.cpp:(.text.unlikely._ZNKSt3__16locale5__imp9use_facetEl.part.18+0x28):
> undefined reference to `__cxa_throw'
> CMakeFiles/cxx_objects.dir/__/src/locale.cpp.o: In function
> `std::__1::__time_get_c_storage<char>::__weeks() const':
> locale.cpp:(.text._ZNKSt3__120__time_get_c_storageIcE7__weeksEv+0x21):
> undefined reference to `__cxa_guard_acquire'
> locale.cpp:(.text._ZNKSt3__120__time_get_c_storageIcE7__weeksEv+0x167):
> undefined reference to `__cxa_guard_release'
> locale.cpp:(.text._ZNKSt3__120__time_get_c_storageIcE7__weeksEv+0x178):
> undefined reference to `__cxa_guard_acquire'
> locale.cpp:(.text._ZNKSt3__120__time_get_c_storageIcE7__weeksEv+0x35a):
> undefined reference to `__cxa_guard_release'
> locale.cpp:(.text._ZNKSt3__120__time_get_c_storageIcE7__weeksEv+0x383):
> undefined reference to `__cxa_guard_abort' . . . |'

These missing symbols are things from the c++ abi library, i.e. either
libcxxabi, libcxxrt, or libsupc++, depending on your platform.


Jon

>
> Fresh Ubuntu 17.04 install (X86) with the preinstalled gcc being used to
> build.
>
> (neither clang nor libc++ are present in the default 17.04 release).
>
>
> ------------------------------------------------------------------------
>
> This message is intended only for the use of the individual or entity to
> which it is addressed, and may contain private and confidential
> information. If you are not the intended recipient of this message you
> are hereby notified that any review, dissemination, distribution or
> copying of this message is strictly prohibited. If you have received
> this e-mail in error, please immediately notify the sender by replying
> to this e-mail and delete the message and any attachment(s) from your
> system. This communication is for information purposes only and should
> not be regarded as an offer to sell or as a solicitation of an offer to
> buy any financial product, an official confirmation of any transaction,
> or as an official statement of Trexquant Investment LP. All information
> is subject to change without notice.
>
>
> _______________________________________________
> cfe-dev mailing list
> [hidden email]
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>

--
Jon Roelofs
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Re: Troubles building libcxx from svn source

Eric Fiselier via cfe-dev
After digging through makefiles, the issue is that on a new Linux install there is only libstdc++, and the CMakeLists file was sticking -nodefaultlibs in the link instructions.

So no c++ abi was present as you pointed out Jon (and that you for taking the time to respond, I appreciate it!)

Adding -DLIBCXX_CXX_ABI=libstdc++ to the top-level cmake invocation seems to have fixed the problem; I'm building now so we'll see.

On Wed, Oct 11, 2017 at 12:53 PM, Jonathan Roelofs <[hidden email]> wrote:


On 10/11/17 7:36 AM, Derrick Johnson via cfe-dev wrote:
up vote0down votefavorite <https://stackoverflow.com/questions/46687323/linker-errors-building-libcxx-on-fresh-ubuntu-install#>
<https://stackoverflow.com/questions/46687323/linker-errors-building-libcxx-on-fresh-ubuntu-install#>
       

The directions I followed are here: https://clang.llvm.org/get_started.html (steps 1-7, including the optional ones).

I was very careful to type everything EXACTLY as specified (so all projects are in the correct directories).

After I ran 'cmake', everything looked fine, no error messages.

But when I try to build with 'make', when it gets to libcxx it has linker errors:

|. . . [100%] Built target cxx_objects [100%] Linking CXX shared library ../../../lib/libc++.so CMakeFiles/cxx_objects.dir/__/src/locale.cpp.o: In function `std::__1::(anonymous namespace)::__throw_runtime_error(std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&)': locale.cpp:(.text.unlikely._ZNSt3__112_GLOBAL__N_1L21__throw_runtime_errorERKNS_12basic_stringIcNS_11char_traitsIcEENS_9allocatorIcEEEE+0xf): undefined reference to `__cxa_allocate_exception' locale.cpp:(.text.unlikely._ZNSt3__112_GLOBAL__N_1L21__throw_runtime_errorERKNS_12basic_stringIcNS_11char_traitsIcEENS_9allocatorIcEEEE+0x33): undefined reference to `__cxa_throw' locale.cpp:(.text.unlikely._ZNSt3__112_GLOBAL__N_1L21__throw_runtime_errorERKNS_12basic_stringIcNS_11char_traitsIcEENS_9allocatorIcEEEE+0x3e): undefined reference to `__cxa_free_exception' CMakeFiles/cxx_objects.dir/__/src/locale.cpp.o: In function `std::__1::ctype_byname<wchar_t>::do_widen(char) const': locale.cpp:(.text._ZNKSt3__112ctype_bynameIwE8do_widenEc+0x43): undefined reference to `__cxa_call_unexpected' CMakeFiles/cxx_objects.dir/__/src/locale.cpp.o: In function `std::__1::ctype_byname<wchar_t>::do_widen(char const*, char const*, wchar_t*) const': locale.cpp:(.text._ZNKSt3__112ctype_bynameIwE8do_widenEPKcS3_Pw+0x7a): undefined reference to `__cxa_call_unexpected' CMakeFiles/cxx_objects.dir/__/src/locale.cpp.o: In function `std::__1::ctype_byname<wchar_t>::do_narrow(wchar_t, char) const': locale.cpp:(.text._ZNKSt3__112ctype_bynameIwE9do_narrowEwc+0x46): undefined reference to `__cxa_call_unexpected' CMakeFiles/cxx_objects.dir/__/src/locale.cpp.o: In function `std::__1::ctype_byname<wchar_t>::do_narrow(wchar_t const*, wchar_t const*, char, char*) const': locale.cpp:(.text._ZNKSt3__112ctype_bynameIwE9do_narrowEPKwS3_cPc+0x8d): undefined reference to `__cxa_call_unexpected' CMakeFiles/cxx_objects.dir/__/src/locale.cpp.o: In function `std::__1::locale::__imp::use_facet(long) const [clone .part.18]': locale.cpp:(.text.unlikely._ZNKSt3__16locale5__imp9use_facetEl.part.18+0x7): undefined reference to `__cxa_allocate_exception' locale.cpp:(.text.unlikely._ZNKSt3__16locale5__imp9use_facetEl.part.18+0x28): undefined reference to `__cxa_throw' CMakeFiles/cxx_objects.dir/__/src/locale.cpp.o: In function `std::__1::__time_get_c_storage<char>::__weeks() const': locale.cpp:(.text._ZNKSt3__120__time_get_c_storageIcE7__weeksEv+0x21): undefined reference to `__cxa_guard_acquire' locale.cpp:(.text._ZNKSt3__120__time_get_c_storageIcE7__weeksEv+0x167): undefined reference to `__cxa_guard_release' locale.cpp:(.text._ZNKSt3__120__time_get_c_storageIcE7__weeksEv+0x178): undefined reference to `__cxa_guard_acquire' locale.cpp:(.text._ZNKSt3__120__time_get_c_storageIcE7__weeksEv+0x35a): undefined reference to `__cxa_guard_release' locale.cpp:(.text._ZNKSt3__120__time_get_c_storageIcE7__weeksEv+0x383): undefined reference to `__cxa_guard_abort' . . . |'

These missing symbols are things from the c++ abi library, i.e. either libcxxabi, libcxxrt, or libsupc++, depending on your platform.


Jon


Fresh Ubuntu 17.04 install (X86) with the preinstalled gcc being used to build.

(neither clang nor libc++ are present in the default 17.04 release).


------------------------------------------------------------------------

This message is intended only for the use of the individual or entity to which it is addressed, and may contain private and confidential information. If you are not the intended recipient of this message you are hereby notified that any review, dissemination, distribution or copying of this message is strictly prohibited. If you have received this e-mail in error, please immediately notify the sender by replying to this e-mail and delete the message and any attachment(s) from your system. This communication is for information purposes only and should not be regarded as an offer to sell or as a solicitation of an offer to buy any financial product, an official confirmation of any transaction, or as an official statement of Trexquant Investment LP. All information is subject to change without notice.


_______________________________________________
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--
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[hidden email]
CodeSourcery / Mentor Embedded / Siemens




This message is intended only for the use of the individual or entity to which it is addressed, and may contain private and confidential information. If you are not the intended recipient of this message you are hereby notified that any review, dissemination, distribution or copying of this message is strictly prohibited. If you have received this e-mail in error, please immediately notify the sender by replying to this e-mail and delete the message and any attachment(s) from your system. This communication is for information purposes only and should not be regarded as an offer to sell or as a solicitation of an offer to buy any financial product, an official confirmation of any transaction, or as an official statement of Trexquant Investment LP. All information is subject to change without notice.

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Re: Troubles building libcxx from svn source

Eric Fiselier via cfe-dev
The Clang documentation is a bit out-of-date, and should probably include libc++abi by default as well. That way the build just works.


On Wed, Oct 11, 2017 at 11:07 AM, Derrick Johnson via cfe-dev <[hidden email]> wrote:
After digging through makefiles, the issue is that on a new Linux install there is only libstdc++, and the CMakeLists file was sticking -nodefaultlibs in the link instructions.

So no c++ abi was present as you pointed out Jon (and that you for taking the time to respond, I appreciate it!)

Adding -DLIBCXX_CXX_ABI=libstdc++ to the top-level cmake invocation seems to have fixed the problem; I'm building now so we'll see.

On Wed, Oct 11, 2017 at 12:53 PM, Jonathan Roelofs <[hidden email]> wrote:


On 10/11/17 7:36 AM, Derrick Johnson via cfe-dev wrote:
up vote0down votefavorite <https://stackoverflow.com/questions/46687323/linker-errors-building-libcxx-on-fresh-ubuntu-install#>
<https://stackoverflow.com/questions/46687323/linker-errors-building-libcxx-on-fresh-ubuntu-install#>
       

The directions I followed are here: https://clang.llvm.org/get_started.html (steps 1-7, including the optional ones).

I was very careful to type everything EXACTLY as specified (so all projects are in the correct directories).

After I ran 'cmake', everything looked fine, no error messages.

But when I try to build with 'make', when it gets to libcxx it has linker errors:

|. . . [100%] Built target cxx_objects [100%] Linking CXX shared library ../../../lib/libc++.so CMakeFiles/cxx_objects.dir/__/src/locale.cpp.o: In function `std::__1::(anonymous namespace)::__throw_runtime_error(std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&)': locale.cpp:(.text.unlikely._ZNSt3__112_GLOBAL__N_1L21__throw_runtime_errorERKNS_12basic_stringIcNS_11char_traitsIcEENS_9allocatorIcEEEE+0xf): undefined reference to `__cxa_allocate_exception' locale.cpp:(.text.unlikely._ZNSt3__112_GLOBAL__N_1L21__throw_runtime_errorERKNS_12basic_stringIcNS_11char_traitsIcEENS_9allocatorIcEEEE+0x33): undefined reference to `__cxa_throw' locale.cpp:(.text.unlikely._ZNSt3__112_GLOBAL__N_1L21__throw_runtime_errorERKNS_12basic_stringIcNS_11char_traitsIcEENS_9allocatorIcEEEE+0x3e): undefined reference to `__cxa_free_exception' CMakeFiles/cxx_objects.dir/__/src/locale.cpp.o: In function `std::__1::ctype_byname<wchar_t>::do_widen(char) const': locale.cpp:(.text._ZNKSt3__112ctype_bynameIwE8do_widenEc+0x43): undefined reference to `__cxa_call_unexpected' CMakeFiles/cxx_objects.dir/__/src/locale.cpp.o: In function `std::__1::ctype_byname<wchar_t>::do_widen(char const*, char const*, wchar_t*) const': locale.cpp:(.text._ZNKSt3__112ctype_bynameIwE8do_widenEPKcS3_Pw+0x7a): undefined reference to `__cxa_call_unexpected' CMakeFiles/cxx_objects.dir/__/src/locale.cpp.o: In function `std::__1::ctype_byname<wchar_t>::do_narrow(wchar_t, char) const': locale.cpp:(.text._ZNKSt3__112ctype_bynameIwE9do_narrowEwc+0x46): undefined reference to `__cxa_call_unexpected' CMakeFiles/cxx_objects.dir/__/src/locale.cpp.o: In function `std::__1::ctype_byname<wchar_t>::do_narrow(wchar_t const*, wchar_t const*, char, char*) const': locale.cpp:(.text._ZNKSt3__112ctype_bynameIwE9do_narrowEPKwS3_cPc+0x8d): undefined reference to `__cxa_call_unexpected' CMakeFiles/cxx_objects.dir/__/src/locale.cpp.o: In function `std::__1::locale::__imp::use_facet(long) const [clone .part.18]': locale.cpp:(.text.unlikely._ZNKSt3__16locale5__imp9use_facetEl.part.18+0x7): undefined reference to `__cxa_allocate_exception' locale.cpp:(.text.unlikely._ZNKSt3__16locale5__imp9use_facetEl.part.18+0x28): undefined reference to `__cxa_throw' CMakeFiles/cxx_objects.dir/__/src/locale.cpp.o: In function `std::__1::__time_get_c_storage<char>::__weeks() const': locale.cpp:(.text._ZNKSt3__120__time_get_c_storageIcE7__weeksEv+0x21): undefined reference to `__cxa_guard_acquire' locale.cpp:(.text._ZNKSt3__120__time_get_c_storageIcE7__weeksEv+0x167): undefined reference to `__cxa_guard_release' locale.cpp:(.text._ZNKSt3__120__time_get_c_storageIcE7__weeksEv+0x178): undefined reference to `__cxa_guard_acquire' locale.cpp:(.text._ZNKSt3__120__time_get_c_storageIcE7__weeksEv+0x35a): undefined reference to `__cxa_guard_release' locale.cpp:(.text._ZNKSt3__120__time_get_c_storageIcE7__weeksEv+0x383): undefined reference to `__cxa_guard_abort' . . . |'

These missing symbols are things from the c++ abi library, i.e. either libcxxabi, libcxxrt, or libsupc++, depending on your platform.


Jon


Fresh Ubuntu 17.04 install (X86) with the preinstalled gcc being used to build.

(neither clang nor libc++ are present in the default 17.04 release).


------------------------------------------------------------------------

This message is intended only for the use of the individual or entity to which it is addressed, and may contain private and confidential information. If you are not the intended recipient of this message you are hereby notified that any review, dissemination, distribution or copying of this message is strictly prohibited. If you have received this e-mail in error, please immediately notify the sender by replying to this e-mail and delete the message and any attachment(s) from your system. This communication is for information purposes only and should not be regarded as an offer to sell or as a solicitation of an offer to buy any financial product, an official confirmation of any transaction, or as an official statement of Trexquant Investment LP. All information is subject to change without notice.


_______________________________________________
cfe-dev mailing list
[hidden email]
http://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-dev


--
Jon Roelofs
[hidden email]
CodeSourcery / Mentor Embedded / Siemens




This message is intended only for the use of the individual or entity to which it is addressed, and may contain private and confidential information. If you are not the intended recipient of this message you are hereby notified that any review, dissemination, distribution or copying of this message is strictly prohibited. If you have received this e-mail in error, please immediately notify the sender by replying to this e-mail and delete the message and any attachment(s) from your system. This communication is for information purposes only and should not be regarded as an offer to sell or as a solicitation of an offer to buy any financial product, an official confirmation of any transaction, or as an official statement of Trexquant Investment LP. All information is subject to change without notice.

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