Patch for Python 3.4.x for macos, based on https://bugs.python.org/issue28676

Python-3.4.3-macos.patch

diff --git a/Python/random.c b/Python/random.c
index 93d300d..396041d 100644
--- a/Python/random.c
+++ b/Python/random.c
@@ -3,6 +3,9 @@
 #include <windows.h>
 #else
 #include <fcntl.h>
+#if defined(HAVE_GETRANDOM) || defined(HAVE_GETENTROPY)
+#include <sys/random.h>
+#endif
 #ifdef HAVE_SYS_STAT_H
 #include <sys/stat.h>
 #endif

To install using pyenv, try saving this to a file and apply it like this:

pyenv install 3.4.3 --patch < Python-3.4.3-macos.patch

thanks

the above patch was trowing an error for me when trying to install python 3.5.2 with pyenv.
this code worked instead:

diff --git a/Python/random.c b/Python/random.c
index 93d300d..396041d 100644
--- a/Python/random.c
+++ b/Python/random.c
@@ -9,9 +9,10 @@
 #  ifdef HAVE_LINUX_RANDOM_H
 #    include <linux/random.h>
 #  endif
-#  ifdef HAVE_GETRANDOM
+#  if defined(HAVE_GETRANDOM) || defined(HAVE_GETENTROPY)
 #    include <sys/random.h>
-#  elif defined(HAVE_GETRANDOM_SYSCALL)
+#  endif
+#  if !defined(HAVE_GETRANDOM) && defined(HAVE_GETRANDOM_SYSCALL)
 #    include <sys/syscall.h>
 #  endif
 #endif

from here https://hg.python.org/cpython/rev/0efd48d4c47c

For Google's benefit, this is for patching 3.4.x if you get this error during installation:

implicit declaration of function 'getentropy' is invalid in C99

Thank you for making this patch available.

I was able to use your patch to resolve the getentropy issue. However I'm now having a new issue. I was wondering if you encountered the following and had any pointers to overcome it:

$ ASDF_PYTHON_PATCH_URL="https://gist.githubusercontent.com/orip/00142a498cf6d0c536b5d38771ad6249/raw/8cd96db639a723803fb072d0b15697f9c95a19e4/Python-3.4.3-macos.patch" asdf install python 3.4.10
python-build --patch 3.4.10 /Users/karthicr/.asdf/installs/python/3.4.10
with patch file from: https://gist.githubusercontent.com/orip/00142a498cf6d0c536b5d38771ad6249/raw/8cd96db639a723803fb072d0b15697f9c95a19e4/Python-3.4.3-macos.patch
python-build: use openssl from homebrew
python-build: use readline from homebrew
Downloading Python-3.4.10.tar.xz...
-> https://www.python.org/ftp/python/3.4.10/Python-3.4.10.tar.xz
Installing Python-3.4.10...
patching file Python/random.c
patch unexpectedly ends in middle of line
Hunk #1 succeeded at 3 with fuzz 1.
python-build: use readline from homebrew
python-build: use zlib from xcode sdk

BUILD FAILED (OS X 11.1 using python-build 1.2.21-6-g2bf6111f)

Inspect or clean up the working tree at /var/folders/yq/82xt_rsn3ds1473grw012dqxtx0bq9/T/python-build.20210102005545.6062
Results logged to /var/folders/yq/82xt_rsn3ds1473grw012dqxtx0bq9/T/python-build.20210102005545.6062.log

Last 10 log lines:
./Modules/posixmodule.c:8283:12: note: forward declaration of 'struct sf_hdtr'
    struct sf_hdtr sf;
           ^
./Modules/posixmodule.c:8339:11: error: implicit declaration of function 'sendfile' is invalid in C99 [-Werror,-Wimplicit-function-declaration]
    ret = sendfile(in, out, offset, &sbytes, &sf, flags);
          ^
clang -Wno-unused-result -DNDEBUG -g -fwrapv -O3 -Wall -Wstrict-prototypes -I/Library/Developer/CommandLineTools/SDKs/MacOSX11.0.sdk/usr/include   -I/Library/Developer/CommandLineTools/SDKs/MacOSX11.0.sdk/usr/include   -Werror=declaration-after-statement   -I. -IInclude -I./Include -I/usr/local/opt/readline/include -I/usr/local/opt/readline/include -I/usr/local/opt/openssl@1.1/include -I/Users/karthicr/.asdf/installs/python/3.4.10/include  -I/usr/local/opt/readline/include -I/usr/local/opt/readline/include -I/usr/local/opt/openssl@1.1/include -I/Users/karthicr/.asdf/installs/python/3.4.10/include   -DPy_BUILD_CORE  -c ./Modules/_weakref.c -o Modules/_weakref.o
6 warnings and 2 errors generated.
make: *** [Modules/posixmodule.o] Error 1
make: *** Waiting for unfinished jobs....

Maybe you can backport the changes in this PR to 3.4.x: python/cpython#21113

Big Sur broke a lot of stuff. Found this from this discussion.

Thank you. I will take a look at that.

Does this patch work for installing 2.7.11? Been running into some issue when I try to install using pyenv

❯❯❯ pyenv install --patch 2.7.11 < <(curl -sSL https://gist.githubusercontent.com/orip/00142a498cf6d0c536b5d38771ad6249/raw/8cd96db639a723803fb072d0b15697f9c95a19e4/Python-3.4.3-macos.patch)
python-build: use openssl from homebrew
python-build: use readline from homebrew
Downloading Python-2.7.11.tar.xz...
-> https://www.python.org/ftp/python/2.7.11/Python-2.7.11.tar.xz
Installing Python-2.7.11...
patching file Python/random.c
patch unexpectedly ends in middle of line
Hunk #1 FAILED at 3.
1 out of 1 hunk FAILED -- saving rejects to file Python/random.c.rej

BUILD FAILED (OS X 11.1 using python-build 20180424)

Inspect or clean up the working tree at /var/folders/cg/qygt2npn2y7brxh8x9bygpnc0000gn/T/python-build.20210107131231.32577
Results logged to /var/folders/cg/qygt2npn2y7brxh8x9bygpnc0000gn/T/python-build.20210107131231.32577.log

Last 10 log lines:
/var/folders/cg/qygt2npn2y7brxh8x9bygpnc0000gn/T/python-build.20210107131231.32577 ~/python-pkgs
/var/folders/cg/qygt2npn2y7brxh8x9bygpnc0000gn/T/python-build.20210107131231.32577/Python-2.7.11 /var/folders/cg/qygt2npn2y7brxh8x9bygpnc0000gn/T/python-build.20210107131231.32577 ~/python-pkgs

Any guidance would be much appreciated! For reference this is the error I was seeing when just trying to install 2.7.11 without the patch:

❯❯❯ pyenv install 2.7.11
python-build: use openssl from homebrew
python-build: use readline from homebrew
Downloading Python-2.7.11.tar.xz...
-> https://www.python.org/ftp/python/2.7.11/Python-2.7.11.tar.xz
Installing Python-2.7.11...
python-build: use readline from homebrew
python-build: use zlib from xcode sdk

BUILD FAILED (OS X 11.1 using python-build 20180424)

Inspect or clean up the working tree at /var/folders/cg/qygt2npn2y7brxh8x9bygpnc0000gn/T/python-build.20210107131750.35749
Results logged to /var/folders/cg/qygt2npn2y7brxh8x9bygpnc0000gn/T/python-build.20210107131750.35749.log

Last 10 log lines:
Python/random.c:114:19: note: did you mean 'py_getentropy'?
Python/random.c:106:1: note: 'py_getentropy' declared here
py_getentropy(unsigned char *buffer, Py_ssize_t size, int fatal)
^
Python/random.c:123:19: error: implicit declaration of function 'getentropy' is invalid in C99 [-Werror,-Wimplicit-function-declaration]
            res = getentropy(buffer, len);
                  ^
2 errors generated.
make: *** [Python/random.o] Error 1
make: *** Waiting for unfinished jobs....

Thank you. I will take a look at that.

@karthicraghupathi did u find the solution? Having a lot of trouble installing 3.4.3 here... the discussion linked refers to 3.7+ only

I am on Big Sur 11.0.1 and facing this below issue while installing 3.4.3 using pyenv with the following command:
pyenv install 3.4.3 --patch < Python-3.4.3-macos.patch
@orip

python-build: use openssl from homebrew
python-build: use readline from homebrew
Installing Python-3.4.3...
patching file Python/random.c
python-build: use readline from homebrew
python-build: use zlib from xcode sdk

BUILD FAILED (OS X 11.0.1 using python-build 20180424)

Inspect or clean up the working tree at /var/folders/3v/7q2n62ds7y572drrb071xp4h0000gp/T/python-build.20210128200252.63497
Results logged to /var/folders/3v/7q2n62ds7y572drrb071xp4h0000gp/T/python-build.20210128200252.63497.log

Last 10 log lines:
#define UTIME_HAVE_FD (defined(HAVE_FUTIMES) || defined(HAVE_FUTIMENS))
                                                ^
./Modules/posixmodule.c:8301:11: error: implicit declaration of function 'sendfile' is invalid in C99 [-Werror,-Wimplicit-function-declaration]
    ret = sendfile(in, out, offset, &sbytes, &sf, flags);
          ^
clang -Wno-unused-result -DNDEBUG -g -fwrapv -O3 -Wall -Wstrict-prototypes -I/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include   -I/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include   -Werror=declaration-after-statement   -I. -IInclude -I./Include -I/usr/local/opt/readline/include -I/usr/local/opt/readline/include -I/usr/local/opt/openssl@1.1/include -I/Users/ajay/.pyenv/versions/3.4.3/include  -I/usr/local/opt/readline/include -I/usr/local/opt/readline/include -I/usr/local/opt/openssl@1.1/include -I/Users/ajay/.pyenv/versions/3.4.3/include   -DPy_BUILD_CORE  -c ./Modules/_functoolsmodule.c -o Modules/_functoolsmodule.o
clang -Wno-unused-result -DNDEBUG -g -fwrapv -O3 -Wall -Wstrict-prototypes -I/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include   -I/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include   -Werror=declaration-after-statement   -I. -IInclude -I./Include -I/usr/local/opt/readline/include -I/usr/local/opt/readline/include -I/usr/local/opt/openssl@1.1/include -I/Users/ajay/.pyenv/versions/3.4.3/include  -I/usr/local/opt/readline/include -I/usr/local/opt/readline/include -I/usr/local/opt/openssl@1.1/include -I/Users/ajay/.pyenv/versions/3.4.3/include   -DPy_BUILD_CORE  -c ./Modules/_operator.c -o Modules/_operator.o
18 warnings and 1 error generated.
make: *** [Modules/posixmodule.o] Error 1
make: *** Waiting for unfinished jobs....

the patch, however, solved the entropy error I was getting earlier.

@karthicraghupathi did u find the solution? Having a lot of trouble installing 3.4.3 here... the discussion linked refers to 3.7+ only

@gustavopergola No, I have not been able find a solution yet.

I would suggest looking at what people are doing at pyenv/pyenv#1643

It's for newer Python versions but the error is the same, making it likely that their solutions would work for 3.4.x as well.

I would suggest looking at what people are doing at pyenv/pyenv#1643

It's for newer Python versions but the error is the same, making it likely that their solutions would work for 3.4.x as well.

@orip thanks. I was able to solve that issue but I ran into another hurdle. I'm going to detail my steps here for everyone. May be someone else can take this over the finish line. I've been trying to build and install Python 3.4.10. I've performed these steps on both macOS Catalina and Pop!_OS 20.04 LTS (based on Ubuntu).

I use asdf which uses pyenv's python-build underneath to build and install different versions of Python. I believe pyenv gives you the ability to provide a URL from which a patch can be applied prior to building and installing Python. asdf did not have this ability so I opened an issue and another user @donaldguy provided a solution to add that capability to asdf here: asdf-community/asdf-python#77 (comment).

Regardless of whether you use asdf or pyenv, you have the ability to only specify one patch URL. So I took the following patches:

• Patch on this current page: https://gist.githubusercontent.com/orip/00142a498cf6d0c536b5d38771ad6249/raw/8cd96db639a723803fb072d0b15697f9c95a19e4/Python-3.4.3-macos.patch
• Patch on pyenv/pyenv#1643#issuecomment-655710632: https://github.com/python/cpython/commit/8ea6353.patch

I combined both these patches and made it available here karthicraghupathi/Python-3.4.x-macos.patch.

I then used the following command to perform the install:

ASDF_PYTHON_PATCH_URL="https://gist.githubusercontent.com/karthicraghupathi/da7bccec3bce904ad081d06efea4a607/raw/e1d81c611ea44bbca114495fbc6e8458417b8313/Python-3.4.3-macos.patch" \
asdf install python 3.4.10

I am able to get past both the original getentropy and sendfile issue. However, I'm running into an issue with OpenSSL now.

python-build --patch 3.4.10 /Users/karthicr/.asdf/installs/python/3.4.10
with patch file from: https://gist.githubusercontent.com/karthicraghupathi/da7bccec3bce904ad081d06efea4a607/raw/e1d81c611ea44bbca114495fbc6e8458417b8313/Python-3.4.3-macos.patch
python-build: use openssl from homebrew
python-build: use readline from homebrew
Downloading Python-3.4.10.tar.xz...
-> https://www.python.org/ftp/python/3.4.10/Python-3.4.10.tar.xz
Installing Python-3.4.10...
patching file Python/random.c
patching file Misc/NEWS.d/next/macOS/2020-06-24-13-51-57.bpo-41100.mcHdc5.rst
patching file configure
Hunk #1 succeeded at 3420 (offset -6 lines).
patching file configure.ac
Hunk #1 succeeded at 489 (offset -21 lines).
python-build: use readline from homebrew
python-build: use zlib from xcode sdk
ERROR: The Python ssl extension was not compiled. Missing the OpenSSL lib?

Please consult to the Wiki page to fix the problem.
https://github.com/pyenv/pyenv/wiki/Common-build-problems


BUILD FAILED (OS X 10.15.7 using python-build 1.2.22-47-g4c302a02)

Inspect or clean up the working tree at /var/folders/dy/1vzm3lbx1673twz_pmd8vcnmr40220/T/python-build.20210201165847.29817
Results logged to /var/folders/dy/1vzm3lbx1673twz_pmd8vcnmr40220/T/python-build.20210201165847.29817.log

Last 10 log lines:
(cd /Users/karthicr/.asdf/installs/python/3.4.10/share/man/man1; ln -s python3.4.1 python3.1)
if test "xupgrade" != "xno"  ; then \
		case upgrade in \
			upgrade) ensurepip="--upgrade" ;; \
			install|*) ensurepip="" ;; \
		esac; \
		 ./python.exe -E -m ensurepip \
			$ensurepip --root=/ ; \
	fi
Ignoring ensurepip failure: pip 9.0.1 requires SSL/TLS

I know these issues are stemming from the fact that OpenSSL now available on most systems (brew on macOS and apt on Ubuntu) no longer have the OpenSSL 1.0.x version. They all now provide OpenSSL 1.1.x versions readily.

I have tried some suggestions from these following issues:

• pyenv/pyenv#916
• pyenv/pyenv#1184

However I remain stuck at this point. Looking forward to seeing if anyone has solved this. I will continue to try and post if I have any further updates.

On Macos you can force the Python build to build openssl 1.0 by removing openssl 1.1 just for the build.

brew uninstall --ignore-dependencies openssl@1.1
pyenv install ...
brew reinstall openssl@1.1

Thanks. I was hoping to avoid uninstalling OpenSSL as re-installing it would mean brew would update all dependent packages because the new OpenSSL version would be newer than what I'm uninstalling. But having come this far, I went ahead and tried it anyway just to see if I could successfully install Python 3.4.10 and guess what: IT WORKED.

The only thing I want to draw attention to is to use the --force option when uninstalling OpenSSL to ensure all versions are removed as indicated by brew.

$ brew uninstall --ignore-dependencies openssl@1.1
Uninstalling /usr/local/Cellar/openssl@1.1/1.1.1h... (8,067 files, 18.5MB)
openssl@1.1 1.1.1g is still installed.
To remove all versions, run:
  brew uninstall --force openssl@1.1

$ brew uninstall --ignore-dependencies --force openssl@1.1
Uninstalling openssl@1.1... (8,059 files, 18MB)

$ ASDF_PYTHON_PATCH_URL="https://gist.githubusercontent.com/karthicraghupathi/da7bccec3bce904ad081d06efea4a607/raw/e1d81c611ea44bbca114495fbc6e8458417b8313/Python-3.4.3-macos.patch" \
asdf install python 3.4.10
python-build --patch 3.4.10 /Users/karthicr/.asdf/installs/python/3.4.10
with patch file from: https://gist.githubusercontent.com/karthicraghupathi/da7bccec3bce904ad081d06efea4a607/raw/e1d81c611ea44bbca114495fbc6e8458417b8313/Python-3.4.3-macos.patch
Downloading openssl-1.0.2k.tar.gz...
-> https://pyenv.github.io/pythons/6b3977c61f2aedf0f96367dcfb5c6e578cf37e7b8d913b4ecb6643c3cb88d8c0
Installing openssl-1.0.2k...
Installed openssl-1.0.2k to /Users/karthicr/.asdf/installs/python/3.4.10

python-build: use readline from homebrew
Downloading Python-3.4.10.tar.xz...
-> https://www.python.org/ftp/python/3.4.10/Python-3.4.10.tar.xz
Installing Python-3.4.10...
patching file Python/random.c
patching file Misc/NEWS.d/next/macOS/2020-06-24-13-51-57.bpo-41100.mcHdc5.rst
patching file configure
Hunk #1 succeeded at 3420 (offset -6 lines).
patching file configure.ac
Hunk #1 succeeded at 489 (offset -21 lines).
python-build: use readline from homebrew
python-build: use zlib from xcode sdk
Installed Python-3.4.10 to /Users/karthicr/.asdf/installs/python/3.4.10

$ asdf list python
  2.7.18
  3.4.10
  3.6.12

$ asdf python shell 3.4.10

$ python
Python 3.4.10 (default, Feb  2 2021, 13:24:58)
[GCC Apple LLVM 12.0.0 (clang-1200.0.32.29)] on darwin
Type "help", "copyright", "credits" or "license" for more information.
>>> import ssl
>>> exit()

$ brew install openssl@1.1

==> Downloading https://homebrew.bintray.com/bottles/openssl%401.1-1.1.1i.catalina.bottle.tar.gz
==> Downloading from https://d29vzk4ow07wi7.cloudfront.net/066b9f114617872e77fa3d4afee2337daabc2c181d7564fe60a5b26d89d69742?response-content-disposition=attac
######################################################################## 100.0%
==> Pouring openssl@1.1-1.1.1i.catalina.bottle.tar.gz
...
...
Omitted rest of the output for brevity.
...
==> Upgrading 34 dependents:
glib 2.66.1 -> 2.66.4_1, cairo 1.16.0_3 -> 1.16.0_4, erlang 23.1.1 -> 23.2.3, freetds 1.2.5 -> 1.2.18, gnupg 2.2.23 -> 2.2.27, gobject-introspection 1.66.1 -> 1.66.1_1, graphviz 2.44.1 -> 2.46.0, harfbuzz 2.7.2 -> 2.7.4, krb5 1.18.2 -> 1.18.3, libssh 0.9.5 -> 0.9.5_1, libxml2 2.9.10_1 -> 2.9.10_2, libxmlsec1 1.2.30 -> 1.2.31, macvim 8.2-166_1 -> 8.2-169_2, mysql@5.7 5.7.31 -> 5.7.32, xwmx/taps/nb 5.6.2 -> 5.7.8, nghttp2 1.41.0_1 -> 1.42.0_1, oath-toolkit 2.6.2_1 -> 2.6.6, pango 1.46.2 -> 1.48.1, plantuml 1.2020.19 -> 1.2021.0, postgresql 13.0 -> 13.1, postgresql@11 11.9 -> 11.10, pyenv 1.2.21 -> 1.2.22, pygments 2.7.1_1 -> 2.7.4, python@3.8 3.8.6 -> 3.8.7, python@3.9 3.9.0 -> 3.9.1_7, rabbitmq 3.8.9_1 -> 3.8.11, ruby 2.7.2 -> 3.0.0_1, sngrep 1.4.7 -> 1.4.8, socat 1.7.3.4 -> 1.7.4.1, termshark 2.1.1_1 -> 2.2.0, unbound 1.12.0 -> 1.13.0, w3m 0.5.3_6 -> 0.5.3_7, wget 1.20.3_2 -> 1.21.1, wireshark 3.4.3
...
Omitted rest of the output for brevity.
...
...

@karthicraghupathi Thanks! This helped immensely.

@karthicraghupathi i am still getting same issue although i am trying to install on M1 architecture. Any fix for M1 big sur?

@benbenbuhben You're welcome.

@srini-akhil Multiple issues have been described on this page. What exactly are you running into? Posting logs will help someone assist you.

@benbenbuhben You're welcome.

@srini-akhil Multiple issues have been described on this page. What exactly are you running into? Posting logs will help someone assist you.

ASDF_PYTHON_PATCH_URL="https://gist.githubusercontent.com/karthicraghupathi/da7bccec3bce904ad081d06efea4a607/raw/e1d81c611ea44bbca114495fbc6e8458417b8313/Python-3.4.3-macos.patch" \
arch -x86_64 asdf install python 3.4.3
python-build --patch 3.4.3 /Users/srini/.asdf/installs/python/3.4.3
with patch file from: https://gist.githubusercontent.com/karthicraghupathi/da7bccec3bce904ad081d06efea4a607/raw/e1d81c611ea44bbca114495fbc6e8458417b8313/Python-3.4.3-macos.patch
Downloading openssl-1.0.2k.tar.gz...
-> https://pyenv.github.io/pythons/6b3977c61f2aedf0f96367dcfb5c6e578cf37e7b8d913b4ecb6643c3cb88d8c0
Installing openssl-1.0.2k...
Installed openssl-1.0.2k to /Users/srini/.asdf/installs/python/3.4.3

python-build: use readline from homebrew
Downloading Python-3.4.3.tar.xz...
-> https://www.python.org/ftp/python/3.4.3/Python-3.4.3.tar.xz
Installing Python-3.4.3...
patching file Python/random.c
patching file Misc/NEWS.d/next/macOS/2020-06-24-13-51-57.bpo-41100.mcHdc5.rst
patching file configure
Hunk #1 succeeded at 3419 (offset -7 lines).
patching file configure.ac
Hunk #1 succeeded at 489 (offset -21 lines).
python-build: use readline from homebrew
python-build: use zlib from xcode sdk
WARNING: The Python bz2 extension was not compiled. Missing the bzip2 lib?
WARNING: The Python readline extension was not compiled. Missing the GNU readline lib?
WARNING: The Python sqlite3 extension was not compiled. Missing the SQLite3 lib?
ERROR: The Python zlib extension was not compiled. Missing the zlib?

Please consult to the Wiki page to fix the problem.
https://github.com/pyenv/pyenv/wiki/Common-build-problems


BUILD FAILED (OS X 11.2.3 using python-build 2.0.1-5-gbbcecc75)

Inspect or clean up the working tree at /var/folders/wz/khb2wmws78131mb3nmx1hkph0000gp/T/python-build.20210618111355.15602
Results logged to /var/folders/wz/khb2wmws78131mb3nmx1hkph0000gp/T/python-build.20210618111355.15602.log

Last 10 log lines:
		 ./python.exe -E -m ensurepip \
			$ensurepip --root=/ ; \
	fi
Ignoring indexes: https://pypi.python.org/simple
Collecting setuptools
Collecting pip
Installing collected packages: pip, setuptools


Successfully installed pip-6.0.8 setuptools-12.0.5

although i have installed zlib library using brew and exported paths as per documentation as well but still i keep on getting this
Anyone installed python 3.4 on M1 Big sur can u pls help

@srini-akhil The documentation suggest setting up CPPFLAGS and LDFLAGS to solve the problem of missing libraries. So if you have installed zlib and readline using brew, you might have to try something like this:

ASDF_PYTHON_PATCH_URL="https://gist.githubusercontent.com/karthicraghupathi/da7bccec3bce904ad081d06efea4a607/raw/e1d81c611ea44bbca114495fbc6e8458417b8313/Python-3.4.3-macos.patch" \
arch -x86_64 \
CPPFLAGS="-I$(brew --prefix zlib)/include -I$(brew --prefix readline)/include" \
LDFLAGS="-L$(brew --prefix readline)/lib" \
asdf install python 3.4.3

YMMV. Keep trying a bunch of things. All the best.

For those, who happen to have aria2c installed: you have to uninstall it as well, since it requires OpenSSL 1.1 to function properly. I did that, then I ran pyenv install with Karthic's patch, and it worked flawlessly.

In the end, this is what I had to execute:

$ brew uninstall --ignore-dependencies --force openssl@1.1
Uninstalling openssl@1.1... (8,073 files, 18.5MB)

$ brew uninstall --ignore-dependencies --force aria2
Uninstalling aria2... (23 files, 4.0MB)

$ pyenv install 3.4.10 --patch < Python-3.4.3-macos.patch # this file I downloaded to my computer
Downloading openssl-1.0.2k.tar.gz...
# output omitted here
Installed Python-3.4.10 to [REDACTED]

$ pyenv versions
  system
* 2.7.18 (set by [REDACTED])
  3.4.10
  3.6.14
* 3.9.6 (set by [REDACTED])

$ brew install openssl@1.1 aria2
Updating Homebrew...
# output omitted here
🍺  /usr/local/Cellar/openssl@1.1/1.1.1l: 8,073 files, 18.5MB
# output omitted here
🍺  /usr/local/Cellar/aria2/1.36.0: 23 files, 4.0MB

$ pyenv shell 3.4.10

$ python --version

Python 3.4.10

@srini-akhil Were you able to resolve? I have a similar issue and I tried what @karthicraghupathi suggested in this comment with no luck

python-build: use openssl from homebrew
python-build: use readline from homebrew
Installing Python-3.4.3...
patching file Python/random.c
patching file Misc/NEWS.d/next/macOS/2020-06-24-13-51-57.bpo-41100.mcHdc5.rst
patching file configure
Hunk #1 succeeded at 3419 (offset -7 lines).
patching file configure.ac
patch unexpectedly ends in middle of line
Hunk #1 succeeded at 489 with fuzz 1 (offset -21 lines).
python-build: use readline from homebrew
python-build: use zlib from xcode sdk
WARNING: The Python bz2 extension was not compiled. Missing the bzip2 lib?
ERROR: The Python ssl extension was not compiled. Missing the OpenSSL lib?

Please consult to the Wiki page to fix the problem.
https://github.com/pyenv/pyenv/wiki/Common-build-problems


BUILD FAILED (OS X 11.3.1 using python-build 20180424)

Inspect or clean up the working tree at /var/folders/qf/7_n2v5yn74789h69s0rv2mn40000gp/T/python-build.20211110174308.82264
Results logged to /var/folders/qf/7_n2v5yn74789h69s0rv2mn40000gp/T/python-build.20211110174308.82264.log

Last 10 log lines:
(cd /Users/duncan.tormey/.pyenv/versions/3.4.3/share/man/man1; ln -s python3.4.1 python3.1)
if test "xupgrade" != "xno"  ; then \
		case upgrade in \
			upgrade) ensurepip="--upgrade" ;; \
			install|*) ensurepip="" ;; \
		esac; \
		 ./python.exe -E -m ensurepip \
			$ensurepip --root=/ ; \
	fi
Ignoring ensurepip failure: pip 6.0.8 requires SSL/TLS```

I got it to work. I had to do this, notice the lack of a version stamp

brew uninstall --ignore-dependencies --force openssl

Then...

brew reinstall zlib

and finally.

CPPFLAGS="-I/usr/local/opt/zlib/include -I$(brew --prefix readline)/include" LDFLAGS="-L$(brew --prefix readline)/lib -L/usr/local/opt/zlib/lib" pyenv install 3.4.3 --patch < Python-3.4.3-macos.patch

Where Python-3.4.3-macos.path is @karthicraghupathi version (thank you so much).

diff --git a/Python/random.c b/Python/random.c
index 93d300d..396041d 100644
--- a/Python/random.c
+++ b/Python/random.c
@@ -3,6 +3,9 @@
 #include <windows.h>
 #else
 #include <fcntl.h>
+#if defined(HAVE_GETRANDOM) || defined(HAVE_GETENTROPY)
+#include <sys/random.h>
+#endif
 #ifdef HAVE_SYS_STAT_H
 #include <sys/stat.h>
 #endif
 diff --git a/Misc/NEWS.d/next/macOS/2020-06-24-13-51-57.bpo-41100.mcHdc5.rst b/Misc/NEWS.d/next/macOS/2020-06-24-13-51-57.bpo-41100.mcHdc5.rst
new file mode 100644
index 0000000000000..ded66b567a92d
--- /dev/null
+++ b/Misc/NEWS.d/next/macOS/2020-06-24-13-51-57.bpo-41100.mcHdc5.rst
@@ -0,0 +1 @@
+Support macOS 11 when building.
diff --git a/configure b/configure
index c51f396824b63..5024860ca4395 100755
--- a/configure
+++ b/configure
@@ -3426,7 +3426,7 @@ $as_echo "#define _BSD_SOURCE 1" >>confdefs.h
   # has no effect, don't bother defining them
   Darwin/[6789].*)
     define_xopen_source=no;;
-  Darwin/1[0-9].*)
+  Darwin/[12][0-9].*)
     define_xopen_source=no;;
   # On AIX 4 and 5.1, mbstate_t is defined only when _XOPEN_SOURCE == 500 but
   # used in wcsnrtombs() and mbsnrtowcs() even if _XOPEN_SOURCE is not defined
diff --git a/configure.ac b/configure.ac
index 70deefb6b9aea..5a3e340aa3e72 100644
--- a/configure.ac
+++ b/configure.ac
@@ -510,7 +510,7 @@ case $ac_sys_system/$ac_sys_release in
   # has no effect, don't bother defining them
   Darwin/@<:@6789@:>@.*)
     define_xopen_source=no;;
-  Darwin/1@<:@0-9@:>@.*)
+  Darwin/@<:@[12]@:>@@<:@0-9@:>@.*)
     define_xopen_source=no;;
   # On AIX 4 and 5.1, mbstate_t is defined only when _XOPEN_SOURCE == 500 but
   # used in wcsnrtombs() and mbsnrtowcs() even if _XOPEN_SOURCE is not defined

Thanks everyone! I would have been lost without this page. Afterwords i reinstalled openssl.

@DuncanTormey your solution was the only one that worked for me (I did it with 3.4.10 btw). Thank you 💪

@DuncanTormey, your solution was the only one that worked for me too..... thank you so much!!

@DuncanTormey your solution was only one that worked for me too.... thank you sooooo much