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grammar; not recommend littering the system

native-api
2021-05-09 23:17:08 +03:00
parent 0794ae050f
commit b1560ec834
1 changed files with 11 additions and 8 deletions
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19
Common-build-problems.md

@@ -194,7 +194,7 @@ E.g. (invocations that worked for various people):
Old Python versions (for CPython, <3.5.3 and <2.7.13) require OpenSSL 1.0 while newer systems provide 1.1, and vice versa. Old Python versions (for CPython, <3.5.3 and <2.7.13) require OpenSSL 1.0 while newer systems provide 1.1, and vice versa.
Note that OpenSSL 1.0 is EOL and by now practically unusable on the Internet due to using obsolete standards. Note that OpenSSL 1.0 is EOL and by now practically unusable on the Internet due to using obsolete standards.
Install the right OpenSSL version and point the build to its location as per above if needed. Install the right OpenSSL version, and point the build to its location as per above if needed.
E.g.: E.g.:
@@ -233,16 +233,20 @@ To fix, either `brew remove binutils` or execute the install command with `AR=/u
## Python cannot find a dependent dynamic library even though it's installed ## Python cannot find a dependent dynamic library even though it's installed
If you're getting messages lke this -- but you do have the corresponding package installed: If you're getting messages like this:
``` ```
libreadline.so.7: cannot open shared object file: No such file or directory libreadline.so.7: cannot open shared object file: No such file or directory
``` ```
but you do have the corresponding package installed.
**Check if the dynamic library's version you have installed is the same as what Python expects:** **Check if the dynamic library's version you have installed is the same as what Python expects:**
```
$ ls /lib/libreadline.so* $ ls /lib/libreadline.so*
/lib/libreadline.so /lib/libreadline.so.8 /lib/libreadline.so.8.0 /lib/libreadline.so /lib/libreadline.so.8 /lib/libreadline.so.8.0
```
Beside build time, this can also happen for an already installed version if: Beside build time, this can also happen for an already installed version if:
@@ -250,11 +254,10 @@ Beside build time, this can also happen for an already installed version if:
Many installation scripts for prebuilt versions give you a warning in such a case. Many installation scripts for prebuilt versions give you a warning in such a case.
* Get or compile the right version of the library if possible * Replace the prebuilt version with a source one (usually, these are suffixed with `-src` if both a prebuilt and a source versions are provided); or
* it needs to be compiled for your system to avoid binary incompatibilies, so the best bets are either building from source or getting a binary from an official source for your distro; or * (not recommended, will make the system harder to maintain) Get or compile the right version of the library
* Replace the prebuilt version with a source one (usually, these are suffixed with `-src` if both a prebuilt and a source versions are provided) * it needs to be compiled for your system to avoid binary incompatibilies, so the best bets are either building from source or getting a binary from an official source for your distro
* You've updated a dependent library on your system to a different major version since the time you had compiled Python * You've updated a dependent library on your system to a version with a different library filename (generally, to a new major version) since the time you had compiled Python
* The easiest way would be to rebuild all affected Python installations against the new version of the library with `pyenv install <version> --force` * The easiest way would be to rebuild all affected Python installations against the new version of the library with `pyenv install <version> --force`
* (You can also get or compile the right version of the library instead as per above)