adapt flat_map library to replace boost::flat_map

meson.build

@@ -9,7 +9,7 @@ project(
   'cpp',
   license: 'MPL-2.0',
 
-  version: '0.24.0',
+  version: '0.24.1',
   default_options: ['warning_level=2', 'buildtype=release', 'cpp_std=c++20'],
   meson_version: '>=1.3.2' #first version with  clang-cl openmp support
 )
@@ -68,6 +68,9 @@ xtensor_dep = dependency('xtensor', static: true, default_options: ['xsimd=enabl
 #fast_float (for fast locale independent float parsing)
 fast_float_dep = dependency('fast_float')
 
+#fast_float (for fast locale independent float parsing)
+flat_map_dep = dependency('flat_map')
+
 #xxhash_cpp (for fast hashing of classes/buffers)
 xxhash_cpp_dep = dependency('xxhash_cpp')
 

src/themachinethatgoesping/tools/meson.build

@@ -84,6 +84,7 @@ if build_machine.system() != 'linux'
                           magic_enum_dep,
                           xtensor_dep,
                           fast_float_dep,
+                          flat_map_dep,
                           frozen_dep,
                           xxhash_cpp_dep],
                         override_options: [
@@ -104,6 +105,7 @@ else
                           magic_enum_dep,
                           xtensor_dep,
                           fast_float_dep,
+                          flat_map_dep,
                           frozen_dep,
                           xxhash_cpp_dep],
                         override_options: [
@@ -127,6 +129,7 @@ tools_dep = declare_dependency(
     magic_enum_dep,
     xtensor_dep,
     fast_float_dep,
+    flat_map_dep,
     frozen_dep,
     xxhash_cpp_dep
   ],

subprojects/flat_map.wrap

@@ -0,0 +1,14 @@
+# SPDX-FileCopyrightText: 2022 - 2023 Peter Urban, Ghent University
+#
+# SPDX-License-Identifier: CC0-1.0
+
+[wrap-git]
+url = https://github.com/Flast/flat_map.git
+revision = master
+directory = flat_map-master
+patch_directory = flat_map
+
+[provide]
+flat_map = flat_map_dep
+
+

subprojects/packagefiles/flat_map/meson.build

@@ -0,0 +1,22 @@
+# SPDX-FileCopyrightText: 2022 - 2023 Peter Urban, Ghent University
+# SPDX-FileCopyrightText: 2019 - 2022 Daniil Goncharov
+#
+# SPDX-License-Identifier: MIT
+
+project(
+    'flat_map', ['cpp'],
+    default_options: ['cpp_std=c++20'],
+    version: '0.1.0',
+)
+
+flat_map_include = include_directories('.')
+
+flat_map_dep = declare_dependency(
+    include_directories: flat_map_include,
+)
+
+# list and install headers
+headers = [
+    ]
+
+#install_headers(headers, preserve_path: false)