Homebrew
libxml2 issue with Homebrew on Linux #2627
-
|
Hi, I'm trying to build a Homebrew formula for Hurl. On macOS, I don't have any problem and my formula is building. My brew formula is: ...
uses_from_macos "libxml2"
def install
system "cargo", "install", *std_cargo_args(path: "packages/hurl")
endIf I try to build as it, I've a compilation error (raised by libxml/build.rs, a build script used by cargo): This build script use the Rust crate pkg_config to find libxml2 build metadata: https://github.com/KWARC/rust-libxml/blob/40020e15b726c27dc4435e9d104a9799f4c77f46/build.rs#L29-L35 #[cfg(any(target_family="unix", target_os="macos"))]
mod pkg_config_dep {
pub fn find() -> bool {
if pkg_config::find_library("libxml-2.0").is_ok() {
return true;
}
false
}
}I struggle to understand why this snippet doesn't seems to work: in the brew log, I can see In the same configuration, if I build my app directly with cargo ( I acknowledge I'm not an expert neither in Homebrew nor Rust, even in Linux stuff so I maybe miss something trivial. Thank you, edit: I've added a kind of minimal setup to reproduce my problem:
src/main.rs: use libxml::tree::Document;
fn main() {
let doc_result = Document::new();
assert!(doc_result.is_ok());
}Cargo.toml [package]
name = "testxml"
version = "0.1.0"
edition = "2021"
[dependencies]
libxml = "0.3.0"
class Testxml < Formula
desc "Test xml"
url "https://github.com/jcamiel/testxml/archive/refs/tags/0.0.1.tar.gz"
sha256 "72c145617d9af341d332c330f164a987a11b6abe590522a8b675ccd8f00edb78"
depends_on "rust" => :build
on_linux do
depends_on "libxml2" => :build
end
def install
system "cargo", "install", *std_cargo_args(path: ".")
end
end
I use this Dockerfile to test a new Linux image: FROM debian:bullseye
RUN apt-get update
RUN apt-get -y install curl \
git \
clang
RUN /bin/bash -c "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/HEAD/install.sh)"
ENV PATH="/home/linuxbrew/.linuxbrew/bin:${PATH}"Then, install the test formula: Jc |
Beta Was this translation helpful? Give feedback.
Replies: 1 comment 1 reply
-
|
Two things here that might help:
|
Beta Was this translation helpful? Give feedback.
-
|
Hi @danielnachun , Thank you very much that's exactly what was missing! I've tested your suggestions and my formula is building on Linux now. class Testxml < Formula
desc "Test xml"
url "https://github.com/jcamiel/testxml/archive/refs/tags/0.0.1.tar.gz"
sha256 "72c145617d9af341d332c330f164a987a11b6abe590522a8b675ccd8f00edb78"
depends_on "rust" => :build
on_linux do
depends_on "pkg-config" => :build
depends_on "libxml2"
end
def install
system "cargo", "install", *std_cargo_args(path: ".")
end
endAnd the final binary is dynamically linked against Thank you!! |
Beta Was this translation helpful? Give feedback.
Two things here that might help:
You probably need to add
pkg-configas a Linux only dependency. That is how most Rust packages findlibxml2.You should check if the final binaries you build are dynamically linked to
libxml2, or if it's just using the headers. You can check what is dynamically linked to your binaries withldd. Iflibxml2is in that list, thenlibxml2needs to be a run time dependency as well on Linux, and you should remove=> :buildafter it. Note that becauselibxml2is provided by macOS but not Linux, we typically useuses_from_macos "libxml2"(possibly followed by=> :build) instead, unless the version oflibxml2provided by macOS is too old.