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aycb-alsa-lib/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 upstream = b.dependency("alsa-lib", .{});
// Create config header matching autotools output
const config = b.addConfigHeader(.{
.style = .blank,
.include_path = "config.h",
}, .{
.PACKAGE_NAME = "alsa-lib",
.VERSION = "1.2.14",
.HAVE_USELOCALE = 1,
.HAVE_EACCESS = 1,
.HAVE_ENDIAN_H = 1,
.HAVE_SYS_SHM_H = 1,
.HAVE_MALLOC_H = 1,
.HAVE_LFS = 1,
.HAVE_LIBDL = 1, // Match native build
// .PIC = 0, // Remove PIC entirely to enable builtin symbols
.BUILD_PCM = "1",
.BUILD_MIXER = "1",
.BUILD_HWDEP = "1",
.ENABLE_STATIC = 1, // Match --enable-static=yes
.ENABLE_SHARED = 0, // Match --enable-shared=no
.ALSA_DEVICE_DIRECTORY = "/dev/snd/",
.ALSA_CONFIG_DIR = "/usr/share/alsa",
.ALSA_PLUGIN_DIR = "/usr/lib/alsa-lib",
.SND_MAX_CARDS = 32,
.BUILD_PCM_PLUGIN_ADPCM = "1",
.BUILD_PCM_PLUGIN_ALAW = "1",
.BUILD_PCM_PLUGIN_IEC958 = "1",
.BUILD_PCM_PLUGIN_LFLOAT = "1",
.BUILD_PCM_PLUGIN_MMAP_EMUL = "1",
.BUILD_PCM_PLUGIN_MULAW = "1",
.BUILD_PCM_PLUGIN_RATE = "1",
.BUILD_PCM_PLUGIN_ROUTE = "1",
.__SYMBOL_PREFIX = "",
._GNU_SOURCE = 1,
.HAVE_GNU_LD = 1,
.HAVE_ELF = 1,
.HAVE_ASM_PREVIOUS_DIRECTIVE = 1,
.BUILD_STATIC = 1,
.BUILD_PCM_PLUGIN_HW = 1,
.SND_PCM_BUILTIN = 1,
});
// Create version.h
const version_h = b.addWriteFiles();
_ = version_h.add("version.h",
\\/*
\\ * version.h
\\ */
\\
\\#define SND_LIB_MAJOR 1 /**< major number of library version */
\\#define SND_LIB_MINOR 2 /**< minor number of library version */
\\#define SND_LIB_SUBMINOR 14 /**< subminor number of library version */
\\#define SND_LIB_EXTRAVER 1000000 /**< extra version number, used mainly for betas */
\\/** library version */
\\#define SND_LIB_VER(maj, min, sub) (((maj)<<16)|((min)<<8)|(sub))
\\#define SND_LIB_VERSION SND_LIB_VER(SND_LIB_MAJOR, SND_LIB_MINOR, SND_LIB_SUBMINOR)
\\/** library version (string) */
\\#define SND_LIB_VERSION_STR "1.2.14"
\\
);
// Generate asoundlib.h
const asoundlib_h = b.addWriteFiles();
_ = asoundlib_h.add("asoundlib.h",
\\/*
\\ * ALSA library - main header file
\\ */
\\
\\#ifndef __ALSA_ASOUNDLIB_H
\\#define __ALSA_ASOUNDLIB_H
\\
\\#include <stdio.h>
\\#include <stdlib.h>
\\#include <string.h>
\\#include <fcntl.h>
\\#include <assert.h>
\\#include <endian.h>
\\#include <sys/poll.h>
\\#include <errno.h>
\\#include <stdint.h>
\\#include <sys/types.h>
\\#include <unistd.h>
\\
\\#include <alsa/asoundef.h>
\\#include <alsa/version.h>
\\#include <alsa/global.h>
\\#include <alsa/input.h>
\\#include <alsa/output.h>
\\#include <alsa/error.h>
\\#include <alsa/conf.h>
\\#include <alsa/control.h>
\\#include <alsa/pcm.h>
\\
\\#endif /* __ALSA_ASOUNDLIB_H */
\\
);
const lib = b.addLibrary(.{
.name = "asound",
.linkage = .static,
.root_module = b.createModule(.{
.target = target,
.optimize = optimize,
.link_libc = true,
}),
});
lib.addConfigHeader(config);
lib.addIncludePath(upstream.path("include"));
lib.addIncludePath(upstream.path("src/pcm")); // For pcm_rate.h etc
lib.addIncludePath(b.path(".")); // For our pcm_symbols_list.c
lib.addIncludePath(version_h.getDirectory());
lib.addIncludePath(asoundlib_h.getDirectory());
// Create alsa as symlink for the include directory. Not sure why upstream
// does this, but since we're not using their scripts, we need to do that
// as well
const create_symlink = b.addSystemCommand(&.{ "sh", "-c", "rm -f alsa; ln -sf . alsa" });
create_symlink.setCwd(upstream.path("include"));
lib.step.dependOn(&create_symlink.step);
lib.addCSourceFiles(.{
.root = upstream.path(""),
.files = &.{
"src/conf.c",
"src/confeval.c",
"src/confmisc.c",
"src/input.c",
"src/output.c",
"src/async.c",
"src/error.c",
"src/dlmisc.c",
"src/socket.c",
"src/shmarea.c",
"src/userfile.c",
"src/names.c",
"src/control/control.c",
"src/control/control_hw.c",
"src/control/cards.c",
"src/control/namehint.c",
"src/control/hcontrol.c",
"src/control/tlv.c",
"src/control/setup.c",
"src/control/ctlparse.c",
"src/control/eld.c",
"src/control/control_empty.c", // Empty control
"src/pcm/pcm.c",
"src/pcm/pcm_hw.c",
"src/pcm/pcm_params.c",
"src/pcm/pcm_misc.c",
"src/pcm/pcm_mmap.c",
"src/pcm/pcm_generic.c",
"src/pcm/pcm_simple.c",
"src/pcm/pcm_plug.c",
"src/pcm/mask.c",
"src/pcm/interval.c",
// Core PCM plugins - must match native build
"src/pcm/pcm_copy.c",
"src/pcm/pcm_linear.c",
"src/pcm/pcm_null.c",
"src/pcm/pcm_empty.c",
"src/pcm/pcm_adpcm.c",
"src/pcm/pcm_alaw.c",
"src/pcm/pcm_mulaw.c",
"src/pcm/pcm_iec958.c",
"src/pcm/pcm_lfloat.c",
"src/pcm/pcm_mmap_emul.c",
"src/pcm/pcm_route.c",
"src/pcm/pcm_plugin.c", // Plugin support functions
"src/pcm/pcm_symbols.c", // Builtin plugin registration
"src/control/control_symbols.c", // Control symbols
"src/timer/timer_symbols.c", // Timer symbols
"src/timer/timer.c",
"src/timer/timer_hw.c",
"src/timer/timer_query.c",
"src/timer/timer_query_hw.c",
},
.flags = &.{
"-D_GNU_SOURCE",
"-D_LARGEFILE64_SOURCE", // Enable 64-bit file operations
"-D_FILE_OFFSET_BITS=64", // Use 64-bit file offsets
"-DALSA_LIBRARY_BUILD",
"-DALSA_STATIC",
"-DBUILD_STATIC_ONLY",
"-UPIC", // Explicitly undefine PIC to enable builtin symbols
},
});
lib.installHeadersDirectory(upstream.path("include"), "alsa", .{
.include_extensions = &.{
"asoundef.h",
"version.h",
"global.h",
"input.h",
"output.h",
"error.h",
"conf.h",
"control.h",
"pcm.h",
},
});
// Install generated asoundlib.h and version.h
lib.installHeader(asoundlib_h.getDirectory().path(b, "asoundlib.h"), "alsa/asoundlib.h");
lib.installHeader(version_h.getDirectory().path(b, "version.h"), "alsa/version.h");
b.installArtifact(lib);
}
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