Bug#1003699: libfido2-dev: missing dependency on libssl-dev breaks pkg-config

[Michael Biebl]

On Thu, 13 Jan 2022 20:55:45 +0000 Luca Boccassi <bl...@debian.org> wrote:

Package: libfido2-dev
Version: 1.9.0-1
Tags: patch

While adding libfido2-dev as a dependency to src:systemd, we noticed
that it fails to build if libssl-dev is not installed, because
libfido2.pc lists:

Requires: libcrypto

So pkg-config --cflags --libs libfido2 breaks:

pkg-config error with 'libfido2': Could not generate cargs for libfido2:
Package libcrypto was not found in the pkg-config search path.
Perhaps you should add the directory containing `libcrypto.pc'
to the PKG_CONFIG_PATH environment variable
Package 'libcrypto', required by 'libfido2', not found

Could not generate cargs for libfido2:
Package libcrypto was not found in the pkg-config search path.
Perhaps you should add the directory containing `libcrypto.pc'
to the PKG_CONFIG_PATH environment variable
Package 'libcrypto', required by 'libfido2', not found

libssl-dev is currently suggested, so it should be bumped to a dependency.

IIRC, Requires.private dependencies are not required for determining CFLAGS.

Regards,
Michael

Without having looked at libfido2, an alternative might be the usage of Requires.private "Requires.private: A list of private packages required by this package but not exposed to applications. The version specific rules from the Requires field also apply here."

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