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Compiling GnuPG IX: Dependencies II

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fmg Saturday March 22, 2025

Situation

Last time we compiled the libraries and GnuPG itself by invoking the classic method ./configure, make and make install with an additional configure option. That resulted in a first success. Now we try a different method by using a different makefile.

Installation destination path

This time we choose the relative installation path native and the absolute path /tmp/canary/native.

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$ pwd
/tmp/canary/compile/gnupg-2.5.5
$ mkdir /tmp/canary/native

Compiling

Using the speedo.mk makefile it is possible to utilize the shipped all inclusive option with the make target native. The needed libraries will be downloaded and compiled by the makefile. There is no need to resolve dependency conflicts manually. But the build environment needs the Debian package patchelf to be installed. This tool helps to generate a more portable version of the binaries.

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make -f build-aux/speedo.mk native
make -f build-aux/speedo.mk install SYSROOT=/tmp/canary/native

The smoke test

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$ /tmp/canary/native/bin/gpg --version
gpg (GnuPG) 2.5.5
libgcrypt 1.11.0
Copyright (C) 2025 g10 Code GmbH
License GNU GPL-3.0-or-later <https://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.

Home: /home/alice/.gnupg
Supported algorithms:
Pubkey: RSA, Kyber, ELG, DSA, ECDH, ECDSA, EDDSA
Cipher: IDEA, 3DES, CAST5, BLOWFISH, AES, AES192, AES256, TWOFISH,
        CAMELLIA128, CAMELLIA192, CAMELLIA256
Hash: SHA1, RIPEMD160, SHA256, SHA384, SHA512, SHA224
Compression: Uncompressed, ZIP, ZLIB

The environment variable LD_LIBRARY_PATH is not needed. The information about the location of libraries is taken from a configuration file which is installed next to the gpg binary.

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$ grep rootdir /tmp/canary/native/bin/gpgconf.ctl 
rootdir = /tmp/canary/native

The binaries are almost out of the box portable. When you move everything from /tmp/canary/native/* to another path /tmp/newlocation it should be sufficient to adjust the rootdir line in the file gpgconf.ctl to rootdir = /tmp/newlocation.

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mkdir /tmp/newlocation
mv /tmp/canary/native/* /tmp/newlocation
sed -i -e 's/tmp\/canary\/native/tmp\/newlocation/' \\
          /tmp/newlocation/bin/gpgconf.ctl


To be continued...