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# Maintainer: Callum Parsey <callum@neoninteger.au>
# Contributor: [object Object] <objekt-Objekt@proton.me>
pkgname=libquotient-encryption
pkgver=0.8.1
pkgrel=1
pkgdesc="A Qt library to write cross-platform clients for Matrix (with experimental encryption support)"
arch=("x86_64" "aarch64")
url="https://github.com/quotient-im/libQuotient"
license=("LGPL2.1")
depends=("gcc-libs" "glibc" "libolm" "openssl" "qt5-base" "qt5-multimedia" "qtkeychain-qt5")
makedepends=("cmake")
provides=("libQuotientE2EE.so=${pkgver%.*}-64")
source=("https://github.com/quotient-im/libQuotient/archive/${pkgver}/source.tar.gz"
"namespace.patch")
sha256sums=('7786d7b8f46d64577f885234951d79aae2ba6823d8d2ba98acbde102fa1b43b1'
'9d7b8066d1afde0c48e5c803c7c1a777368a1c00042c2af613e12f7775a88415')
prepare() {
# This patch makes the following changes:
# - There is existing logic in `CMakeLists.txt` to change the name of the
# library to `QuotientQt6` when the relevant build option is enabled, I
# extend this to also add `E2EE` to the name if that option is enabled.
# This will change the name of the generated library (i.e. it becomes
# `libQuotientE2EE.so`) as well as the `pkg-config` description file (it
# will be installed to `<prefix>/lib/pkgconfig/QuotientE2EE.pc`) and
# CMake package description files (which will go to
# `<prefix>/lib/cmake/QuotientE2EE/QuotientE2EE-*.cmake`). The
# aforementioned CMake files also internally use the correct name.
# - In both `CMakeLists.txt` and the template `<target>Config.cmake` file,
# I change the install location for the headers from
# `<prefix>/include/Quotient` to `<prefix>/include/QuotientE2EE` so that
# this package does not need to conflict with or depend on the official
# `libquotient` Arch package.
# - Corrected the `pkg-config` description file so that it takes the
# correct name, description and linker directives for the selected build
# configuration. These changes are not Arch-specific and should be
# upstreamed at some point.
patch -Np0 -d . -i namespace.patch
}
build() {
cmake -B build -S "libQuotient-${pkgver}" \
-DCMAKE_INSTALL_PREFIX=/usr \
-DCMAKE_BUILD_TYPE=None \
-DBUILD_SHARED_LIBS=1 \
-DBUILD_TESTING=OFF \
-DQuotient_ENABLE_E2EE=ON
cmake --build build
}
package() {
DESTDIR="${pkgdir}" cmake --install build
install -Dm644 "libQuotient-${pkgver}/README.md" "${pkgdir}/usr/share/doc/${pkgname}/README.md"
# The header files expect to be installed in a system directory called
# `Quotient` as evidenced by their nested include statements. Since we
# install the headers to `/usr/include/QuotientE2EE` to prevent conflicts
# with software that use the official non-encryption package, we need to
# adjust the include statements in the headers to make sure that the right
# ones are used. We can't do this in the `prepare()` step because the build
# system stores the headers alongside the source code in a directory called
# `Quotient` and we therefore cannot change the include statements without
# also moving the entire source tree. So we have to let the library compile
# with unmodified headers, and then change them after CMake has installed
# them to the right place.
#
# Reference:
# - `s/<expression>/<replacement>/g` means to replace all instances of text
# which match the provided basic regular expression with the provided
# replacement text
# - The content of the expression between `\(` and `\)` represents a
# sub-expression. The `\1` in the replacement means to include the text
# which matched the first sub-expression verbatim.
# - `[[:blank:]]*` matches an arbitrary amount of white-space (space or
# horizontal tab characters)
# - `[<"]` matches a single instance of either the quote or left angle
# bracket characters
# - Places where a forward slash needs to be part of the expression or
# replacement text are escaped with a backslash, i.e. `\/`
# - So the expression reads: match all instances of text which are of the
# form `# include <Quotient/`, with everything but the final forward
# slash contained in a sub-expression, and with an arbitrary amount of
# white-space allowed
# - And the replacement text will be whatever text matched the first
# sub-expression (i.e. `# include <Quotient` or `# include "Quotient` but
# with the right amount of white-space) followed by `E2EE/`.
find "${pkgdir}/usr/include/QuotientE2EE" -name '*.h' -exec sed -i \
's/\(#[[:blank:]]*include[[:blank:]]*[<"]Quotient\)\//\1E2EE\//g' '{}' \;
}
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