meson.build

library_sources = files(
  'Cargo.toml',
  'build.rs',
  'src/accept_language.rs',
  'src/angle.rs',
  'src/api.rs',
  'src/aspect_ratio.rs',
  'src/bbox.rs',
  'src/color.rs',
  'src/cond.rs',
  'src/coord_units.rs',
  'src/css.rs',
  'src/dasharray.rs',
  'src/document.rs',
  'src/dpi.rs',
  'src/drawing_ctx.rs',
  'src/element.rs',
  'src/error.rs',
  'src/filter_func.rs',
  'src/filter.rs',
  'src/filters/blend.rs',
  'src/filters/bounds.rs',
  'src/filters/color_matrix.rs',
  'src/filters/component_transfer.rs',
  'src/filters/composite.rs',
  'src/filters/context.rs',
  'src/filters/convolve_matrix.rs',
  'src/filters/displacement_map.rs',
  'src/filters/error.rs',
  'src/filters/flood.rs',
  'src/filters/gaussian_blur.rs',
  'src/filters/image.rs',
  'src/filters/lighting.rs',
  'src/filters/merge.rs',
  'src/filters/mod.rs',
  'src/filters/morphology.rs',
  'src/filters/offset.rs',
  'src/filters/tile.rs',
  'src/filters/turbulence.rs',
  'src/float_eq_cairo.rs',
  'src/font_props.rs',
  'src/gradient.rs',
  'src/href.rs',
  'src/image.rs',
  'src/io.rs',
  'src/iri.rs',
  'src/layout.rs',
  'src/length.rs',
  'src/lib.rs',
  'src/limits.rs',
  'src/log.rs',
  'src/marker.rs',
  'src/node.rs',
  'src/paint_server.rs',
  'src/parsers.rs',
  'src/path_builder.rs',
  'src/path_parser.rs',
  'src/pattern.rs',
  'src/properties.rs',
  'src/property_defs.rs',
  'src/property_macros.rs',
  'src/rect.rs',
  'src/shapes.rs',
  'src/space.rs',
  'src/structure.rs',
  'src/style.rs',
  'src/surface_utils/iterators.rs',
  'src/surface_utils/mod.rs',
  'src/surface_utils/shared_surface.rs',
  'src/surface_utils/srgb.rs',
  'src/text.rs',
  'src/transform.rs',
  'src/ua.css',
  'src/unit_interval.rs',
  'src/url_resolver.rs',
  'src/util.rs',
  'src/viewbox.rs',
  'src/ua.css',
  'src/xml/attributes.rs',
  'src/xml/mod.rs',
  'src/xml/xml2_load.rs',
  'src/xml/xml2.rs',
)

rust_artifacts = custom_target(
  'librsvg-2',
  build_by_default: true,
  output: '@0@rsvg_@1@.@2@'.format(lib_prefix, librsvg_api_major, ext_static),
  console: true,
  depend_files: library_sources + librsvg_c_sources,
  env: extra_env,
  command: [
    cargo_wrapper,
    cargo_wrapper_args,
    '--command=cbuild',
    '--current-build-dir', '@OUTDIR@',
    '--current-source-dir', meson.current_source_dir(),
    '--packages', 'librsvg-c',
    '--extension', ext_static,
  ] + avif_feature_args
    + pixbuf_feature_args,
)

librsvg_c_lib = rust_artifacts[0]

makedef_args = [
  makedef,
  '--regex',
  '^rsvg_.',
]

if host_system in ['darwin', 'ios']
  makedef_args += ['--os', 'darwin']
elif host_system in ['windows', 'cygwin']
  makedef_args += ['--os', 'win']
else
  makedef_args += ['--os', 'linux']
endif

if cc.symbols_have_underscore_prefix()
  makedef_args += ['--prefix', '_']
else
  makedef_args += ['--prefix', '']
endif

makedef_tool_args = []

if is_msvc_style
  dumpbin = find_program('dumpbin')
  makedef_tool_args += ['--dumpbin', dumpbin]
else
  nm = find_program('llvm-nm', required: false)
  if not nm.found()
    if host_system in ['darwin', 'ios']
      warning('llvm-nm not found, you may experience problems when creating the shared librsvg.')
      warning('Please install the llvm-tools component through rustup, or point Meson to an existing LLVM installation.')
    endif
    nm = find_program('nm')
  endif
  makedef_tool_args += ['--nm', nm]
endif

sym_files = files(
  '../win32/librsvg.symbols'
)

if pixbuf_dep.found()
  sym_files += files(
    '../win32/librsvg-pixbuf.symbols'
  )
endif

librsvg_def = configure_file(
  command: [makedef_args, '--list', '@INPUT@'],
  input: sym_files,
  output: '@0@.def'.format(librsvg_pc),
  capture: true,
)

librsvg_ver = custom_target(
  '@0@.ver'.format(librsvg_pc),
  command: [makedef_args, makedef_tool_args, '@INPUT@'],
  input: librsvg_c_lib,
  output: '@0@.ver'.format(librsvg_pc),
  capture: true,
)

version_script = meson.current_build_dir() / '@0@.def'.format(librsvg_pc)

if host_system in ['darwin', 'ios']
  vflag = '-Wl,-exported_symbols_list,@0@'.format(version_script)
else
  vflag = '-Wl,--version-script,@0@'.format(version_script)
endif

# This is not strictly needed, but since we are telling Cargo to build a staticlib, it puts in
# all of Rust's standard library and code from dependencies even when it is not needed.
# With the following, we shrink the final .so size; see issue #965.
#
# Amyspark: this is still needed after switching to cargo-cbuild, since
# GIR requires a shared library under MSVC, and Meson will only accept it
# if the library is a Meson generated target.
# No further flags are needed under MSVC, because LINK will already strip
# the library by default.
#
# Also check for -Bsymbolic-functions linker flag used to avoid
# intra-library PLT jumps, if available.
strip_link_args = cc.get_supported_link_arguments(
  '-Wl,-dead_strip',
  '-Wl,--gc-sections',
  '-Wl,-Bsymbolic-functions',
)

link_args = cc.get_supported_link_arguments([vflag]) + strip_link_args

# Some systems, reportedly OpenBSD and macOS, refuse
# to create libraries without any object files. Compiling
# this file, and adding its object file to the library,
# will prevent the library from being empty.
if cc.has_function_attribute('unused')
  rsvg_dummy = configure_file(
    command: [
      python,
      '-c',
      'print("static int __attribute__((unused)) __rsvg_dummy;")'
    ],
    capture: true,
    output: '_rsvg_dummy.c'
  )
else
  rsvg_dummy = configure_file(
    command: [
      python,
      '-c',
      'print("static int __rsvg_dummy; int dummy(void) { return __rsvg_dummy; }")'
    ],
    capture: true,
    output: '_rsvg_dummy.c'
  )
endif

librsvg_lib = librsvg_c_lib

# Wait on this dependency before trying to build using Rust
librsvg_rust_dep = rust_artifacts

if get_option('default_library') in ['shared', 'both']
  librsvg_shared_lib = shared_library(
    rsvg_ver,
    rsvg_dummy,
    link_whole: librsvg_c_lib,
    link_args: link_args,
    link_depends: librsvg_ver,
    dependencies: library_dependencies,
    include_directories: [includeinc],
    vs_module_defs: librsvg_def,
    install: true,
    version: meson.project_version() # it's not exact as m4
  )
  if get_option('default_library') == 'shared'
    librsvg_lib = librsvg_shared_lib
  endif
  librsvg_rust_dep = librsvg_shared_lib
endif
if get_option('default_library') in ['static', 'both']
  # Rust cannot yet use import libraries for MSVC which do not end in .lib.
  # The static library must be manually generated so that it matches Meson's
  # naming convention.
  # See https://github.com/rust-lang/rust/issues/122455
  librsvg_lib = custom_target(
    'rsvg-2-static',
    input: librsvg_c_lib,
    output: '@0@rsvg-@1@.@2@'.format(lib_prefix, librsvg_api_major, 'a'),
    command: [
      python,
      '-c',
      'import os; import sys; import shutil; shutil.copy(sys.argv[1], sys.argv[2])',
      '@INPUT0@',
      '@OUTPUT0@'
    ],
    install: true,
    install_dir: get_option('libdir'),
  )

  librsvg_rust_dep = librsvg_lib
endif

# This is the main dependency to use for tests; it means "link to the library we just built"
librsvg_dep = declare_dependency(
  sources: includes,
  include_directories: [includeinc],
  dependencies: library_dependencies,
  link_with: librsvg_lib,
)

meson.override_dependency('librsvg-2.0', librsvg_dep)

pkg = import('pkgconfig')

# If any of the dependencies is e.g. wrap, ignore as we can't include
# them without knowing how they exposed the pkg-config module
# (if CMake, there's simply no way at all)
has_pkgconfig_dependencies = true

foreach i : library_dependencies_sole
  if i.found() and i.type_name() != 'pkgconfig'
    warning('One or more dependencies are not provided by pkg-config, skipping generation of the pkg-config module.')
    has_pkgconfig_dependencies = false
    break
  endif
endforeach

build_pixbuf_loader = build_pixbuf_loader.require(has_pkgconfig_dependencies,
  error_message: 'The gdk-pixbuf loader target requires the pkg-config module'
)

if has_pkgconfig_dependencies
  librsvg_c_pc = pkg.generate(
    name : 'librsvg',
    filebase: librsvg_pc,
    description : 'library that renders svg files',
    libraries : [librsvg_lib] + other_library_dependencies,
    subdirs: librsvg_pc,
    requires: library_dependencies_sole,
    libraries_private: private_dependencies,
  )
endif

if build_gir.allowed()
  gir_args = [
    '-DRSVG_COMPILATION'
  ]

  gir_includes = [
    'GLib-2.0',
    'GObject-2.0',
    'Gio-2.0',
    'cairo-1.0',
  ]

  vala_includes = [
    'gio-2.0',
    'cairo',
  ]

  if build_pixbuf_loader.allowed()
    gir_includes += [
      'GdkPixbuf-2.0',
    ]

    vala_includes += [
      'gdk-pixbuf-2.0',
    ]
  endif

  if get_option('default_library') == 'shared'
    librsvg_gir = librsvg_lib
  else
    if is_msvc_style
      librsvg_gir = librsvg_shared_lib
    else
      librsvg_gir = shared_library(
        'rsvg-gir',
        rsvg_dummy,
        link_whole: librsvg_c_lib,
        dependencies: library_dependencies,
        include_directories: [includeinc],
      )
    endif
  endif

  rsvg_gir = gnome.generate_gir(
    librsvg_gir,
    namespace: 'Rsvg',
    nsversion: '2.0',
    symbol_prefix: [ 'rsvg', 'librsvg' ],
    dependencies: library_dependencies,
    includes: gir_includes,
    env: extra_env,
    export_packages: librsvg_pc,
    header: ['librsvg/rsvg.h'],
    install: true,
    sources: includes,
    extra_args: gir_args,
    fatal_warnings: get_option('werror'),
  )
endif

if build_tests
  library_test_sources = files(
    'tests/api.rs',
    'tests/bugs.rs',
    'tests/errors.rs',
    'tests/filters.rs',
    'tests/geometries.rs',
    'tests/intrinsic_dimensions.rs',
    'tests/loading_crash.rs',
    'tests/loading_disallowed.rs',
    'tests/primitive_geometries.rs',
    'tests/primitives.rs',
    'tests/reference.rs',
    'tests/render_crash.rs',
    'tests/shapes.rs',
    'tests/text.rs',
    'src/test_utils/compare_surfaces.rs',
    'src/test_utils/mod.rs',
    'src/test_utils/reference_utils.rs',
  )

  test(
    'Rust tests (rsvg)',
    cargo_wrapper,
    timeout: -1, # no timeout
    args: [
      cargo_wrapper_args,
      '--current-build-dir', meson.current_build_dir(),
      '--command=test',
      '--current-source-dir', meson.current_source_dir(),
      '--packages', 'librsvg',
    ] + avif_feature_args,
    env: extra_env,
    depends: librsvg_rust_dep
  )

  test(
    'Rust tests (librsvg)',
    cargo_wrapper,
    timeout: -1, # no timeout
    args: [
      cargo_wrapper_args,
      '--current-build-dir', meson.current_build_dir(),
      '--command=test',
      '--current-source-dir', meson.current_source_dir(),
      '--packages', 'librsvg-c',
    ] + avif_feature_args
      + pixbuf_feature_args,
    env: extra_env,
    depends: librsvg_rust_dep
  )
endif