init

.gitattributes

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+*.zig text eol=lf
+*.zon text eol=lf

.github/workflows/ci.yaml

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+name: Continuous Integration
+
+on:
+  push:
+    branches: [main]
+
+  pull_request:
+    branches: [main]
+
+  workflow_dispatch:
+
+jobs:
+  install:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Check out repository
+        uses: actions/checkout@v4
+
+      - name: Set up Zig
+        uses: mlugg/setup-zig@v1
+
+      - name: Run `install`
+        run: zig build install -Duse-curl -Duse-bz2
+
+  fmt:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Check out repository
+        uses: actions/checkout@v4
+
+      - name: Set up Zig
+        uses: mlugg/setup-zig@v1
+
+      - name: Run `fmt`
+        run: zig build fmt

.gitignore

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+.zig-cache/
+zig-out/

LICENSE

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+MIT License
+
+Copyright (c) 2024 Jora Troosh
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

README.md

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+# cfitsio
+
+[![CI][ci-shd]][ci-url]
+[![LC][lc-shd]][lc-url]
+
+## Zig build of [CFITSIO library](https://github.com/HEASARC/cfitsio).
+
+### :rocket: Usage
+
+- Add `cfitsio` dependency to `build.zig.zon`.
+
+```sh
+zig fetch --save https://github.com/tensorush/cfitsio/archive/<git_tag_or_commit_hash>.tar.gz
+```
+
+- Use `cfitsio` as a module in your `build.zig`.
+
+```zig
+const cfitsio_dep = b.dependency("cfitsio", .{
+    .target = target,
+    .optimize = optimize,
+});
+const cfitsio_mod = cfitsio_dep.module("cfitsio");
+<compile>.root_module.addImport("cfitsio", cfitsio_mod);;
+```
+
+<!-- MARKDOWN LINKS -->
+
+[ci-shd]: https://img.shields.io/github/actions/workflow/status/tensorush/cfitsio/ci.yaml?branch=main&style=for-the-badge&logo=github&label=CI&labelColor=black
+[ci-url]: https://github.com/tensorush/cfitsio/blob/main/.github/workflows/ci.yaml
+[lc-shd]: https://img.shields.io/github/license/tensorush/cfitsio.svg?style=for-the-badge&labelColor=black
+[lc-url]: https://github.com/tensorush/cfitsio/blob/main/LICENSE

build.zig

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+const std = @import("std");
+
+pub fn build(b: *std.Build) void {
+    const target = b.standardTargetOptions(.{});
+    const optimize = b.standardOptimizeOption(.{});
+    const version = std.SemanticVersion{ .major = 4, .minor = 4, .patch = 1 };
+
+    // Custom options
+    const use_curl = b.option(bool, "use-curl", "Enable remote file access") orelse false;
+    const use_bz2 = b.option(bool, "use-bz2", "Enable reading bzip2-compressed files") orelse false;
+
+    // Dependencies
+    const cfitsio_dep = b.dependency("cfitsio", .{});
+    const cfitsio_path = cfitsio_dep.path("");
+
+    // Library
+    const lib_step = b.step("lib", "Install library");
+
+    const lib = b.addStaticLibrary(.{
+        .name = "cfitsio",
+        .target = target,
+        .version = version,
+        .optimize = optimize,
+    });
+
+    var flags = std.BoundedArray([]const u8, 4){};
+    flags.appendSliceAssumeCapacity(&FLAGS);
+    if (use_curl) {
+        lib.linkSystemLibrary("curl");
+        flags.appendAssumeCapacity("-DCFITSIO_HAVE_CURL");
+    }
+    if (use_bz2) {
+        lib.linkSystemLibrary("bz2");
+        flags.appendAssumeCapacity("-DHAVE_BZIP2=1");
+    }
+
+    lib.addCSourceFiles(.{ .root = cfitsio_path, .files = &SOURCES, .flags = flags.constSlice() });
+    lib.installHeadersDirectory(cfitsio_path, "", .{ .include_extensions = &HEADERS });
+    lib.linkSystemLibrary("z");
+    lib.linkLibC();
+
+    const lib_install = b.addInstallArtifact(lib, .{});
+    lib_step.dependOn(&lib_install.step);
+    b.default_step.dependOn(lib_step);
+
+    // Module
+    const module = b.addModule("cfitsio", .{
+        .target = target,
+        .optimize = optimize,
+        .root_source_file = b.path("src/lib.zig"),
+    });
+    module.linkLibrary(lib);
+
+    // Formatting checks
+    const fmt_step = b.step("fmt", "Run formatting checks");
+
+    const fmt = b.addFmt(.{
+        .paths = &.{
+            "build.zig",
+        },
+        .check = true,
+    });
+    fmt_step.dependOn(&fmt.step);
+    b.default_step.dependOn(fmt_step);
+}
+
+const HEADERS = .{
+    "fitsio.h",
+    "fitsio2.h",
+    "longnam.h",
+    "drvrsmem.h",
+    "cfortran.h",
+    "f77_wrap.h",
+    "region.h",
+};
+
+const SOURCES = .{
+    "buffers.c",
+    "cfileio.c",
+    "checksum.c",
+    "drvrfile.c",
+    "drvrmem.c",
+    "drvrnet.c",
+    "drvrsmem.c",
+    "editcol.c",
+    "edithdu.c",
+    "eval_l.c",
+    "eval_y.c",
+    "eval_f.c",
+    "fitscore.c",
+    "getcol.c",
+    "getcolb.c",
+    "getcold.c",
+    "getcole.c",
+    "getcoli.c",
+    "getcolj.c",
+    "getcolk.c",
+    "getcoll.c",
+    "getcols.c",
+    "getcolsb.c",
+    "getcoluk.c",
+    "getcolui.c",
+    "getcoluj.c",
+    "getkey.c",
+    "group.c",
+    "grparser.c",
+    "histo.c",
+    "iraffits.c",
+    "modkey.c",
+    "putcol.c",
+    "putcolb.c",
+    "putcold.c",
+    "putcole.c",
+    "putcoli.c",
+    "putcolj.c",
+    "putcolk.c",
+    "putcoluk.c",
+    "putcoll.c",
+    "putcols.c",
+    "putcolsb.c",
+    "putcolu.c",
+    "putcolui.c",
+    "putcoluj.c",
+    "putkey.c",
+    "region.c",
+    "scalnull.c",
+    "swapproc.c",
+    "wcssub.c",
+    "wcsutil.c",
+    "imcompress.c",
+    "quantize.c",
+    "ricecomp.c",
+    "pliocomp.c",
+    "fits_hcompress.c",
+    "fits_hdecompress.c",
+    "simplerng.c",
+    "zcompress.c",
+    "zuncompress.c",
+};
+
+const FLAGS = .{
+    "-std=c89",
+    "-D_REENTRANT",
+};

build.zig.zon

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+.{
+    .name = "cfitsio",
+    .version = "4.4.1",
+    .minimum_zig_version = "0.13.0",
+    .dependencies = .{
+        .cfitsio = .{
+            .url = "https://github.com/HEASARC/cfitsio/archive/cfitsio4_4_1_20240617.tar.gz",
+            .hash = "1220d9b5104c0d9cd8158f52ce64d891eb76a083b43962aed62c611addb920e5a9bb",
+        },
+    },
+    .paths = .{
+        "src/",
+        "build.zig",
+        "build.zig.zon",
+        "LICENSE",
+        "README.md",
+    },
+}

src/lib.zig

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+pub const c = @cImport({
+    @cInclude("fitsio/fitsio.h");
+});