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annotate rust/hg-core/build.rs @ 44348:d8d4fa9a7f18

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rust-re2: add wrapper for calling Re2 from Rust This assumes that Re2 is installed following Google's guide. I am not sure how we want to integrate it in the project, but I think a follow-up patch would be more appropriate for such work. As it stands, *not* having Re2 installed results in a compilation error, which is a problem as it breaks install compatibility. Hence, this is gated behind a non-default `with-re2` compilation feature. Differential Revision: https://phab.mercurial-scm.org/D7910
author Rapha?l Gom?s <rgomes@octobus.net>
date Thu, 16 Jan 2020 13:34:04 +0100
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children 97c10b157665
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44348
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1 // build.rs
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2 //
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3 // Copyright 2020 Raphaël Gomès <rgomes@octobus.net>
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4 //
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5 // This software may be used and distributed according to the terms of the
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6 // GNU General Public License version 2 or any later version.
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7
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8 #[cfg(feature = "with-re2")]
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9 use cc;
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10
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11 #[cfg(feature = "with-re2")]
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12 fn compile_re2() {
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13 cc::Build::new()
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14 .cpp(true)
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15 .flag("-std=c++11")
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16 .file("src/re2/rust_re2.cpp")
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17 .compile("librustre.a");
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18
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19 println!("cargo:rustc-link-lib=re2");
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20 }
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21
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22 fn main() {
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23 #[cfg(feature = "with-re2")]
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24 compile_re2();
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25 }