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0.9.8zh
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README.md
README.md
 
 

README.md

How to: Build OpenSSL on macOS

Intro

This example is building OpenSSL as a Universal Binary for Intel-64Bit and ARM-64Bit.

Requirements

It requires a macOS Version and Xcode version that is capable of building these two targets.

The included built .dylib's (Version 3.x) have been built using:

  • macOS 15.3
  • Xcode 16.2

Let's build OpenSSL

There are subfolders for different OpenSSL versions.

  • Version 0.9.8 needs some manual modifications in order to compile it for ARM-64Bit.
    However - it's an outdated OpenSSL version. It should no longer be used.
  • Version 1.1
    Note: This version is out of support and should no longer be used.
  • For Version 3.1, 3.2, 3.3 and 3.4 the script modifies VERSION.dat so that .dylibs will have 3.x in the filename.
  • So best look in the folders 3.0 (LTS) and 3.4.

How to build OpenSSL using the provided Shell Scripts:

  1. Launch Terminal
  2. Change to the OpenSSL build folder:
    cd /path/to/where/you/have/saved/openssl-byo/openssl/3.0
  3. Delete all files in the folder, except for build.sh
  4. Edit the Build Script build.sh with a TextEditor of your choice
  5. Change the variable to the OpenSSL version you're going to build:
    • To build OpenSSL 3.0.x (LTS):
      DOWNLOAD_OPENSSL_VERSION="3.0.15"
    • To build OpenSSL 3.3.x:
      DOWNLOAD_OPENSSL_VERSION="3.3.2"
    • To build OpenSSL 3.4.x:
      DOWNLOAD_OPENSSL_VERSION="3.4.0"
  6. just in case: the build script needs to be executable:
    chmod 755 ./build.sh
  7. Run the Script build.sh:
    ./build.sh

The build script will perform the following steps:

  1. Download the OpenSSL source
  2. Create two sub-folders (one for each build target) and extract the source in there
  3. Build the two Targets: arm64, x86_64
  4. Combine the built .dylibs to a Universal .dylib containing both Targets

Note: The build script doesn't do error checking...
Should you not see the expected .dylib's in the build folder once it finishes, you need to look into the Shell Output and figure out what didn't work as expected.

Result: In your "openssl" folder you should now have 2 files:

  1. libssl.3(.x).dylib
  2. libcrypto.3(.x).dylib

Note: The version number in the filename is being set automatically according to the version you've built.