Meson improvements

.gitignore

@@ -2,6 +2,7 @@ Makefile.config
 perl/Makefile.config
 
 # /
+/build
 /aclocal.m4
 /autom4te.cache
 /precompiled-headers.h.gch

dependencies/aws-sdk-cpp/meson.build

@@ -4,27 +4,43 @@
 
 # Look for aws-cpp-sdk, an optional dependency
 #--------------------------------------------------
-if get_option('with_s3')
+s3_deps = [
+    dependency('aws-cpp-sdk-core', required: get_option('with_s3')),
+    dependency('aws-cpp-sdk-s3', required: get_option('with_s3')),
+    dependency('aws-cpp-sdk-transfer', required: get_option('with_s3'))
+]
 
-    has_s3client = meson.get_compiler('cpp').check_header('aws/s3/S3Client.h')
+have_s3 = true
+foreach d : s3_deps
+    have_s3 = have_s3 and d.found()
+endforeach
 
-    aws_version = meson.get_compiler('cpp').get_define(
-        'AWS_SDK_VERSION_STRING',
-        prefix : '#include <aws/core/VersionConfig.h>'
-    ).strip('"').split('.')
+aws_sdk_cpp_dep = declare_dependency(dependencies : s3_deps)
+
+config_h.set(
+    'ENABLE_S3',
+    have_s3.to_int(),
+    description : 'Whether to enable S3 support via aws-sdk-cpp.')
+
+if have_s3
 
-    aws_sdk_cpp_dep = declare_dependency(
-        dependencies : [
-            dependency('aws-cpp-sdk-core'),
-            dependency('aws-cpp-sdk-s3'),
-            dependency('aws-cpp-sdk-transfer')])
+    has_s3client = cpp.check_header(
+        'aws/s3/S3Client.h',
+        dependencies: aws_sdk_cpp_dep,
+    )
 
     if has_s3client
         config_h.set(
             'HAVE_AWS_S3_S3CLIENT_H', 1,
             description : 'Whether to enable S3 support via aws-sdk-cpp.')
     endif
 
+    aws_version = cpp.get_define(
+        'AWS_SDK_VERSION_STRING',
+        prefix : '#include <aws/core/VersionConfig.h>',
+        dependencies: aws_sdk_cpp_dep,
+    ).strip('"').split('.')
+
     config_h.set(
         'AWS_VERSION_MAJOR', aws_version[0],
         description : 'Major version of aws-sdk-cpp.')
@@ -36,9 +52,4 @@ if get_option('with_s3')
         'AWS_VERSION_PATCH', aws_version[2],
         description : 'Patch version of aws-sdk-cpp.')
 
-else
-    aws_sdk_cpp_dep = dependency('', required: false)
-    config_h.set(
-        'ENABLE_S3', 0,
-        description : 'Whether to enable S3 support via aws-sdk-cpp.')
 endif

dependencies/bdw-gc/meson.build

@@ -4,11 +4,7 @@
 
 # Look for Boehm garbage collector, an optional dependency
 #--------------------------------------------------
-if get_option('enable_gc')
-    gc_dep = dependency('bdw-gc')
-else
-    gc_dep = dependency('', required: false)
-endif
+gc_dep = dependency('bdw-gc', required: get_option('enable_gc'))
 
 
 config_h.set(

dependencies/boost/meson.build

@@ -7,7 +7,8 @@
 boost_mod_list = [
   'system',
   'context',
-  'thread']
+  'thread',
+]
 
 
 boost_dep = dependency(

dependencies/editline/meson.build

@@ -11,14 +11,17 @@
 
 editline_dep = cpp.find_library('editline')
 
-if (cpp.has_header('editline.h'))
-    config_h.set(
-        'HAVE_EDITLINE_H', 1,
-        description : 'Define to 1 if you have the <editline.h> header file.')
-else
+if not (
+    cpp.has_header(
+        'editline.h',
+        dependencies : editline_dep))
     error('Nix requires editline.h; however the header was not found.')
 endif
 
+config_h.set(
+    'HAVE_EDITLINE_H', 1,
+    description : 'Define to 1 if you have the <editline.h> header file.')
+
 if not (
     cpp.has_function(
         'read_history',

dependencies/sodium/meson.build

@@ -4,6 +4,9 @@
 # FIXME !! sodium is seemingly a required dependency for building, but 
 # it isn't listed anywhere on documentation that i could find. dependency
 # object needs to be added to meson.
+#
+# 0df69d96e02ce4c9e17bd33333c5d78313341dd3 made it required but docs were not
+# updated.
 
 # look for libsodium, a required dependency
 #--------------------------------------------------

meson.build

@@ -10,15 +10,17 @@
 #-------------------------------------------------
 project(
     'nix',
-    ['cpp', 'rust'],
+    'cpp',
     meson_version : '>= 0.57.0',
     default_options : [
         'cpp_std=c++17',
         'warning_level=3',
         'optimization=3',
-        'debug=true'],
+        'debug=true'
+    ],
     version : files('.version'),
-    license : 'MIT')
+    license : 'MIT',
+)
 
 
 # init compiler 
@@ -226,8 +228,8 @@ project_dirs = [
     'scripts',
     #'misc',
     #'doc',
-    #'tests'
-    ]
+    #'tests',
+]
 
 
 foreach dir : project_dirs

meson_options.txt

@@ -33,7 +33,8 @@ option(
         '-Wno-unused-parameter',
         '-Wno-variadic-macros',
         '-Wdeprecated-declarations',
-        '-Wno-missing-field-initializers'],
+        '-Wno-missing-field-initializers',
+    ],
     description : 'C build flags')
 
 
@@ -42,20 +43,14 @@ option(
 
 option(
     'enable_gc',
-    type : 'boolean',
-    value : 'true',
-    description : 'Build nix with Boehm garbage collector')
-
-option(
-    'with_libsodium',
     type : 'feature',
     value : 'auto',
-    description : 'Build nix with libsodium')
+    description : 'Build nix with Boehm garbage collector')
 
 option(
     'with_s3',
-    type : 'boolean',
-    value : 'false',
+    type : 'feature',
+    value : 'auto',
     description : 'Build nix with s3')
 
 option(

scripts/meson.build

@@ -1,16 +1,17 @@
 # Nix corepkgs build file
 #============================================================================
 
-scripts_dir = meson.current_source_dir()
 scripts_inc = [include_directories('.')]
 
 
 # src files
 #============================================================================
 
 scripts_data = files(
-    join_paths(scripts_dir, 'install-darwin-multi-user.sh'),
-    join_paths(scripts_dir, 'install-multi-user.sh'))
+    'install-darwin-multi-user.sh',
+    'install-multi-user.sh',
+)
+
 
 
 # targets

src/build-remote/meson.build

@@ -1,15 +1,15 @@
 # build-remote build file
 #============================================================================
 
-build_remote_dir = meson.current_source_dir()
 build_remote_inc = [include_directories('.')]
 
 
 # src files
 #============================================================================
 
 build_remote_src = files(
-    join_paths(build_remote_dir, 'build-remote.cc'))
+    'build-remote.cc',
+)
 
 
 build_remote_headers = files()

src/libcmd/meson.build

@@ -1,7 +1,6 @@
 # libmain build file
 #============================================================================
 
-libcmd_dir = meson.current_source_dir()
 libcmd_inc = [include_directories('.')]
 
 
@@ -28,17 +27,19 @@ libcmd_dep_list = [
 #============================================================================
 
 libcmd_src = files(
-    join_paths(libcmd_dir, 'command.cc'),
-    join_paths(libcmd_dir, 'installables.cc'),
-    join_paths(libcmd_dir, 'legacy.cc'),
-    join_paths(libcmd_dir, 'markdown.cc'))
+    'command.cc',
+    'installables.cc',
+    'legacy.cc',
+    'markdown.cc',
+)
 
 
 libcmd_headers = files(
-    join_paths(libcmd_dir, 'command.hh'),
-    join_paths(libcmd_dir, 'installables.hh'),
-    join_paths(libcmd_dir, 'legacy.hh'),
-    join_paths(libcmd_dir, 'markdown.hh'))
+    'command.hh',
+    'installables.hh',
+    'legacy.hh',
+    'markdown.hh',
+)
 
 
 # build

src/libexpr/flake/meson.build

@@ -10,15 +10,17 @@ libexpr_priomops_dir = meson.current_source_dir()
 libexpr_inc += include_directories('.')
 
 libexpr_src += files(
-    join_paths(libexpr_priomops_dir, 'config.cc'),
-    join_paths(libexpr_priomops_dir, 'flake.cc'),
-    join_paths(libexpr_priomops_dir, 'flakeref.cc'),
-    join_paths(libexpr_priomops_dir, 'lockfile.cc'))
+    'config.cc',
+    'flake.cc',
+    'flakeref.cc',
+    'lockfile.cc',
+)
 
 libexpr_headers += files(
-    join_paths(libexpr_priomops_dir, 'flake.hh'),
-    join_paths(libexpr_priomops_dir, 'flakeref.hh'),
-    join_paths(libexpr_priomops_dir, 'lockfile.hh'))
+    'flake.hh',
+    'flakeref.hh',
+    'lockfile.hh',
+)
 
 
 # targets

src/libexpr/meson.build

@@ -1,7 +1,6 @@
 # Nix lib expr build file
 #============================================================================
 
-libexpr_dir = meson.current_source_dir()
 libexpr_inc = proj_inc
 
 
@@ -24,36 +23,38 @@ libexpr_dep_list = [
 #============================================================================
 
 libexpr_src = files(
-    join_paths(libexpr_dir, 'attr-path.cc'),
-    join_paths(libexpr_dir, 'attr-set.cc'),
-    join_paths(libexpr_dir, 'common-eval-args.cc'),
-    join_paths(libexpr_dir, 'eval-cache.cc'),
-    join_paths(libexpr_dir, 'eval.cc'),
-    join_paths(libexpr_dir, 'function-trace.cc'),
-    join_paths(libexpr_dir, 'get-drvs.cc'),
-    join_paths(libexpr_dir, 'json-to-value.cc'),
-    join_paths(libexpr_dir, 'nixexpr.cc'),
-    join_paths(libexpr_dir, 'primops.cc'),
-    join_paths(libexpr_dir, 'value-to-json.cc'),
-    join_paths(libexpr_dir, 'value-to-xml.cc'))
+    'attr-path.cc',
+    'attr-set.cc',
+    'common-eval-args.cc',
+    'eval-cache.cc',
+    'eval.cc',
+    'function-trace.cc',
+    'get-drvs.cc',
+    'json-to-value.cc',
+    'nixexpr.cc',
+    'primops.cc',
+    'value-to-json.cc',
+    'value-to-xml.cc',
+)
 
 
 libexpr_headers = files(
-    join_paths(libexpr_dir, 'attr-path.hh'),
-    join_paths(libexpr_dir, 'attr-set.hh'),
-    join_paths(libexpr_dir, 'common-eval-args.hh'),
-    join_paths(libexpr_dir, 'eval-cache.hh'),
-    join_paths(libexpr_dir, 'eval.hh'),
-    join_paths(libexpr_dir, 'eval-inline.hh'),
-    join_paths(libexpr_dir, 'function-trace.hh'),
-    join_paths(libexpr_dir, 'get-drvs.hh'),
-    join_paths(libexpr_dir, 'json-to-value.hh'),
-    join_paths(libexpr_dir, 'nixexpr.hh'),
-    join_paths(libexpr_dir, 'primops.hh'),
-    join_paths(libexpr_dir, 'symbol-table.hh'),
-    join_paths(libexpr_dir, 'value.hh'),
-    join_paths(libexpr_dir, 'value-to-json.hh'),
-    join_paths(libexpr_dir, 'value-to-xml.hh'))
+    'attr-path.hh',
+    'attr-set.hh',
+    'common-eval-args.hh',
+    'eval-cache.hh',
+    'eval.hh',
+    'eval-inline.hh',
+    'function-trace.hh',
+    'get-drvs.hh',
+    'json-to-value.hh',
+    'nixexpr.hh',
+    'primops.hh',
+    'symbol-table.hh',
+    'value.hh',
+    'value-to-json.hh',
+    'value-to-xml.hh',
+)
 
 
 # include directories
@@ -68,7 +69,8 @@ libexpr_inc += include_directories('.')
 #---------------------------------------------------
 libexpr_dirs = [
   'flake',
-  'primops']
+  'primops',
+]
 
 foreach dir : libexpr_dirs
     subdir(dir)
@@ -135,7 +137,8 @@ libexpr_lib = library(
     install_dir : libdir,
     include_directories : [
         libexpr_inc,
-        proj_inc],
+        proj_inc,
+    ],
     cpp_args : libexpr_cxx_args,
     link_args : libexpr_link_args,
     dependencies : libexpr_dep_list)