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its-pointless / gcc_termux

Gcc for termux with fortran scipy etc... Use apt for newest updates instructions in README.txt
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g++ throws bunch of errors when compiling c++ code #141

Closed AG-7219 closed 2 years ago

AG-7219 commented 2 years ago

I installed both g++-10 and g++-11, but when I try to compile c++ code with these compilers i get a bunch of errors which seem to point towards problems in header files. The complete log is too large but I am attaching a snapshot for reference. Screenshot_2022-03-02-01-01-40-241_com termux

The installation of g++ was successful as can be seen from the g++ --version execution IMG_20220302_010236

These are the contents of the file that I am compiling IMG_20220302_010418

My device is poco M3 pro Android Version - 11 RP1A.200720.011 Termux Version - 0.118.0

Lastly, i was not getting these errors when i was using clang for compiling c++ files. Maybe the installation of gcc has some problems. I tried searching the errors on Google but couldn't find anything close the error message that I am getting. Thanks in advance for the help

T-3B commented 2 years ago

Hi! Also want to add my issue since it is related : I'm just trying to compile "Hello world" program with gcc-11 but got

~ $ gcc hello1.c
In file included from /data/data/com.termux/files/usr/include/sys/cdefs.h:370,
                 from /data/data/com.termux/files/usr/include/stdio.h:41,
                 from hello1.c:1:
/data/data/com.termux/files/usr/include/android/api-level.h:174:50: error: 'stric' undeclared here (not in a function)
  174 | int android_get_application_target_sdk_version() __INTRODUCED_IN(24);
      |                                                  ^~~~~~~~~~~~~~~
/data/data/com.termux/files/usr/include/android/api-level.h:174:50: error: 'introduced' undeclared here (not in a function)
  174 | int android_get_application_target_sdk_version() __INTRODUCED_IN(24);
      |                                                  ^~~~~~~~~~~~~~~

No problem at all with clang. Android 11 & Termux 0.118.0

licy183 commented 2 years ago

Maybe you could try to pass -D__BIONIC_VERSIONER, like gcc main.c -o output -D__BIONIC_VERSIONER.

AG-7219 commented 2 years ago

@licy183 thanks for your response. Using the flag indeed removed the previous errors, though I still get some errors. Screenshot_2022-03-22-23-22-07-447_com termux

Update : it seems like there is already a fix for the errors that I encountered after using the flag, all i had to do was execute the command setup-patchforgcc and everything worked. @T-3B can you please confirm if the same works for you as well so that i can close the issue. Also, thanks again @licy183.

T-3B commented 2 years ago

I confirm @AG-7219 ! The D__BIONIC_VERSIONER did change the errors, while setup-patchgcc did correct them! No more error at all. Thank you to both of you ^^

Update Actually even after setup-patchgcc I need to specify D__BIONIC_VERSIONER to compile successfully (but needed them both).

martin-frbg commented 2 years ago

Not sure if this project still has a maintainer, but if it does, the fix should be as simple as having the setup-patchforgcc script add

#if !defined(__clang__)
#define __BIONIC_VERSIONER
#endif

after the "#pragma once" line in /usr/include/android/versioning.h

EDIT: or put the attached file (without the final ".txt" extension added for the github UI) in /usr/share/setup-scripts before running setup-patchforgcc . Doing a PR here appears to be, well, pointless, as the script and its patch files appear to be part of the binary .deb package for gcc in the "pointless" repo versioning-gcc-compat.diff.txt