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

@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 [email protected]
Uninstalling [email protected]... (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 [email protected] aria2
Updating Homebrew...
# output omitted here
🍺  /usr/local/Cellar/[email protected]/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