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Date: Tue, 24 Feb 2026 01:46:05 +0800
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Subject: The file /etc/pki/tls/certs/ca-bundle.crt is empty
To: cygwin AT cygwin DOT com
From: =?utf-8?b?5b6Q5oyB5oGSIFh1IENoaWhlbmcgdmlhIEN5Z3dpbg==?=
 <cygwin AT cygwin DOT com>
Reply-To: =?UTF-8?B?5b6Q5oyB5oGSIFh1IENoaWhlbmc=?= <chiheng DOT xu AT gmail DOT com>
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Sender: "Cygwin" <cygwin-bounces~archive-cygwin=delorie DOT com AT cygwin DOT com>

# file /etc/pki/tls/certs/ca-bundle.crt
/etc/pki/tls/certs/ca-bundle.crt: symbolic link to
/etc/pki/ca-trust/extracted/pem/tls-ca-bundle.pem

# git clone https://gitlab.com/qemu-project/qemu.git
Cloning into 'qemu'...
fatal: unable to access 'https://gitlab.com/qemu-project/qemu.git/':
error adding trust anchors from file: /etc/pki/tls/certs/ca-bundle.crt

This will cause curl and git not be able to download https urls, and
will let git build fail to produce a usable git.

# git clone https://gitlab.com/qemu-project/qemu.git
Cloning into 'qemu'...
warning: templates not found in
/cygdrive/e/Note/Tool/git-cygwin-clang-bfd-release-install/share/git-core/templates
git: 'remote-https' is not a git command. See 'git --help'.
fatal: remote helper 'https' aborted session

Temporary fix(link to a previous working tls-ca-bundle.pem) :
https://github.com/xu-chiheng/Note/blob/main/.bashrc.d/quirk.sh#L125
fix_cygwin_tls_certs() {
    local source=/etc/pki/tls/certs/ca-bundle.crt
    local target=~/Util/tls-ca-bundle.pem
    if ! { [ -e "${source}" ] && [ "$(readlink -f "${source}")" =
"$(readlink -f "${target}")" ] ;}; then
        rm -rf "${source}" \
        && ln -s "${target}" "${source}"
    fi
}

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