我刚刚从源代码安装了libksba及其依赖项libgpg-error，我可以向您保证

I just installed libksba and its dependency libgpg-error from source and I can assure you that installing Homebrew and then installing libksba is much more straightforward. With Homebrew, you'll spend far less time dealing with terminal commands and the likelihood of success is considerably higher. It is popular for a reason.

为了将来的访问者的利益，以下是在没有Homebrew的情况下通过bash从源代码编译和安装libgpg-error和libksba的说明:

For the benefit of future visitors, here are instructions to compile and install libgpg-error and libksba from source via bash without Homebrew:

cd /usr/local/src

curl -O ftp://ftp.gnupg.org/gcrypt/libgpg-error/libgpg-error-1.9.tar.gz
tar -xvf libgpg-error-1.9.tar.gz
cd libgpg-error-1.9/
./configure
make
make install

cd ..
curl -O ftp://ftp.gnupg.org/gcrypt/libksba/libksba-1.2.0.tar.bz2
tar -xvf libksba-1.2.0.tar.bz2
cd libksba-1.2.0/
./configure
make
make install