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Enforce MagickWand version in build.rs

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It is very easy to overlook the version of MagickWand mentioned in the
README, so make sure the build system enforces it.

Fixes #19

cargo test passes
This commit is contained in:
Nathan Fiedler
2016-10-16 11:00:06 -07:00
parent cb40925af0
commit b63f25c550
4 changed files with 33 additions and 2 deletions
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27
build.rs
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@ -45,7 +45,7 @@ fn run_bindgen(out_dir: String, bindings_path_str: &str) {
.arg("--exists")
.arg("MagickWand")
.status().unwrap().success() {
panic!("MagickWand library must be installed")
panic!("MagickWand library must be installed");
}
// Get the compiler flags for the MagickWand library.
@ -116,7 +116,32 @@ fn run_bindgen(out_dir: String, bindings_path_str: &str) {
std::fs::remove_file(&gen_h_path).expect("could not remove header file");
}
fn assert_mw_version() {
//
// So far there is only 6.9 and then 7.x, so comparing to 6.10 should
// work for now. Such a release may very well work, but we will have to
// look at that when the time comes.
//
if !Command::new("pkg-config")
.arg("--atleast-version=6.9")
.arg("MagickWand")
.status().unwrap().success() {
panic!("MagickWand version must be at least 6.9");
}
if !Command::new("pkg-config")
.arg("--max-version=6.10")
.arg("MagickWand")
.status().unwrap().success() {
panic!("MagickWand version must be no higher than 6.9");
}
}
fn main() {
//
// Assert that the appropriate version of MagickWand is installed,
// since we are very dependent on the particulars of MagickWand.
//
assert_mw_version();
//
// If the MagickWand bindings are missing, generate them using
// rust-bindgen.