From 98f6fd6d3513f65e3f065d62c647ae884830cde6 Mon Sep 17 00:00:00 2001
From: Leonard Kugis <leonard@kug.is>
Date: Thu, 2 Oct 2025 00:01:35 +0200
Subject: Introduced meson build system

---
 meson.build       | 78 +++++++++++++++++++++++++++++++++++++++++++++++++++++++
 meson_options.txt |  5 ++++
 src/meson.build   | 23 ++++++++++++++++
 3 files changed, 106 insertions(+)
 create mode 100644 meson.build
 create mode 100644 meson_options.txt
 create mode 100644 src/meson.build

diff --git a/meson.build b/meson.build
new file mode 100644
index 0000000..7f2adef
--- /dev/null
+++ b/meson.build
@@ -0,0 +1,78 @@
+project(
+  'bindfs',
+  'c',
+  version: '0.0.0',
+  default_options: ['warning_level=2', 'c_std=gnu11']
+)
+
+cc = meson.get_compiler('c')
+
+# ---- Abhängigkeiten ----
+# Bevorzuge FUSE2 (alte API), falle auf FUSE3 zurück.
+fuse_dep = dependency('fuse', required: false)  # pkg-config: fuse (FUSE2)
+if fuse_dep.found()
+  add_project_arguments('-DFUSE_USE_VERSION=26', language: 'c')  # FUSE2 API
+else
+  fuse_dep = dependency('fuse3', required: true)
+  add_project_arguments('-DFUSE_USE_VERSION=30', language: 'c')  # FUSE3 API
+  add_project_arguments('-DBINDFS_USE_FUSE3', language: 'c')
+endif
+
+threads_dep = dependency('threads', required: true)
+dl_dep      = cc.find_library('dl', required: true)
+rt_dep      = cc.find_library('rt', required: false)
+iconv_dep   = dependency('iconv', required: false)
+
+deps = [fuse_dep, threads_dep, dl_dep]
+if rt_dep.found()
+  deps += rt_dep
+endif
+if iconv_dep.found()
+  deps += iconv_dep
+endif
+
+# ---- Allgemeine Compiler-Flags ----
+# GNU-Extensions (pipe2 etc.) & große Offsets.
+add_project_arguments(
+  '-D_GNU_SOURCE',
+  '-D_FILE_OFFSET_BITS=64',
+  # S_ISDIR etc.: stellt sicher, dass <sys/stat.h> überall drin ist
+  '-include', 'sys/stat.h',
+  language: 'c'
+)
+
+# ---- Feature-Checks (ersetzt configure.ac) ----
+# Achtung: passende Includes pro Funktion setzen.
+have_pipe2           = cc.has_function('pipe2',           prefix: '#include <unistd.h>')
+have_posix_spawn     = cc.has_function('posix_spawn',     prefix: '#include <spawn.h>')
+have_copy_file_range = cc.has_function('copy_file_range', prefix: '#include <unistd.h>')
+
+# Utimens-Varianten – bindfs.c entscheidet anhand dieser Makros:
+have_utimensat  = cc.has_function('utimensat',  prefix: '#define _GNU_SOURCE\n#include <sys/stat.h>\n#include <fcntl.h>')
+have_lutimes    = cc.has_function('lutimes',    prefix: '#include <sys/time.h>')
+have_futimesat  = cc.has_function('futimesat',  prefix: '#include <sys/time.h>\n#include <fcntl.h>\n#include <unistd.h>')
+
+conf = configuration_data()
+conf.set('HAVE_PIPE2',            have_pipe2)
+conf.set('HAVE_POSIX_SPAWN',      have_posix_spawn)
+conf.set('HAVE_COPY_FILE_RANGE',  have_copy_file_range)
+
+# Diese drei sind wichtig, damit der #error in bindfs_utimens nicht triggert:
+conf.set('HAVE_UTIMENSAT',  have_utimensat)
+conf.set('HAVE_LUTIMES',    have_lutimes)
+conf.set('HAVE_FUTIMESAT',  have_futimesat)
+
+# Autotools-kompatible Makros, die der Code nutzt
+conf.set_quoted('PACKAGE_NAME',    meson.project_name())
+conf.set_quoted('PACKAGE_VERSION', meson.project_version())
+conf.set_quoted('PACKAGE_STRING',  meson.project_name() + ' ' + meson.project_version())
+
+# Exakt "config.h" erzeugen (liegt im Build-Root)
+configure_file(output: 'config.h', configuration: conf)
+
+# ---- Unterverzeichnisse ----
+subdir('src')
+
+# ---- Manpage installieren ----
+install_data('src/bindfs.1', install_dir: get_option('mandir') / 'man1')
+
diff --git a/meson_options.txt b/meson_options.txt
new file mode 100644
index 0000000..fcb84af
--- /dev/null
+++ b/meson_options.txt
@@ -0,0 +1,5 @@
+option('install_macos_fs_link',
+  type: 'boolean',
+  value: false,
+  description: 'Install macOS filesystems / bindfs.fs with mount_bindfs symlink')
+
diff --git a/src/meson.build b/src/meson.build
new file mode 100644
index 0000000..4e72ffa
--- /dev/null
+++ b/src/meson.build
@@ -0,0 +1,23 @@
+srcs = files(
+  'bindfs.c',
+  'debug.c',
+  'permchain.c',
+  'userinfo.c',
+  'arena.c',
+  'misc.c',
+  'usermap.c',
+  'rate_limiter.c',
+)
+
+# Wichtig: relative Includes!
+# '.'  -> src/ (Source + Build von src/)
+# '..' -> Projekt-Root (Source + Build-Root -> dort liegt build/config.h)
+inc = include_directories('.', '..')
+
+executable('bindfs',
+  sources: srcs,
+  include_directories: inc,
+  dependencies: deps,
+  install: true
+)
+
-- 
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