commit 6faab1038bcc57db209a362224362920fe7e5de0
Author: Kroket Ltd <code@kroket.io>
Date:   Sat Mar 23 12:16:43 2024 +0200

    fuck cmake

diff --git a/CMakeLists.txt b/CMakeLists.txt
new file mode 100644
index 0000000..85fef1c
--- /dev/null
+++ b/CMakeLists.txt
@@ -0,0 +1,78 @@
+list(INSERT CMAKE_MODULE_PATH 0 "${CMAKE_CURRENT_SOURCE_DIR}/cmake")
+list(INSERT CMAKE_PREFIX_PATH 0 "/tmp/test/lib/cmake/mylib")
+list(INSERT CMAKE_PREFIX_PATH 0 "/tmp/test/lib/cmake/kut")
+cmake_minimum_required(VERSION 3.23)
+project(mylib VERSION 2.0)
+include(GNUInstallDirs)
+include(CMakePackageConfigHelpers)
+
+set(CMAKE_CXX_STANDARD 17)
+set(CMAKE_BUILD_TYPE Release)
+
+find_package(sodium REQUIRED)
+find_package(kut 2.0 REQUIRED)
+message(STATUS "sodium: ${sodium_VERSION_STRING}")
+
+add_library(mylib STATIC)
+target_sources(mylib
+    PUBLIC
+        FILE_SET HEADERS
+        BASE_DIRS ${CMAKE_CURRENT_SOURCE_DIR}
+        FILES
+            ${CMAKE_CURRENT_SOURCE_DIR}/test_library.h
+            ${CMAKE_CURRENT_SOURCE_DIR}/test_internal.h
+    PRIVATE
+        ${CMAKE_CURRENT_SOURCE_DIR}/test_library.cpp
+        ${CMAKE_CURRENT_SOURCE_DIR}/test_internal.cpp
+    )
+
+target_link_libraries(mylib PUBLIC
+    sodium
+    kut::kut)
+
+target_include_directories(mylib
+    PUBLIC $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}>
+    PUBLIC $<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}>
+)
+
+install(TARGETS mylib EXPORT mylibTargets
+    RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR}/mylib/
+    LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}/mylib/
+    ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR}/mylib/
+    INCLUDES DESTINATION ${CMAKE_INSTALL_INCLUDEDIR}/mylib/
+    FILE_SET HEADERS DESTINATION ${CMAKE_INSTALL_INCLUDEDIR}/mylib/)
+
+
+#
+# CMake package export/install
+#
+
+install(EXPORT mylibTargets
+        FILE mylibTargets.cmake
+        NAMESPACE mylib::
+        DESTINATION ${CMAKE_INSTALL_LIBDIR}/cmake/mylib
+        )
+
+# copy cmake Find*.cmake files to CMake's to-be-installed module folder
+# @TODO: only do this once
+install(DIRECTORY "${CMAKE_SOURCE_DIR}/cmake/"
+        DESTINATION "${CMAKE_INSTALL_LIBDIR}/cmake/mylib/modules"
+        FILES_MATCHING PATTERN "Find*.cmake")
+
+# write CMake package config
+configure_package_config_file(${CMAKE_SOURCE_DIR}/cmake/package.cmake.in
+        "${CMAKE_CURRENT_BINARY_DIR}/mylibConfig.cmake"
+        INSTALL_DESTINATION ${CMAKE_INSTALL_LIBDIR}/cmake/mylib)
+
+# write CMake package version config
+write_basic_package_version_file(
+    mylibConfigVersion.cmake
+    VERSION ${PACKAGE_VERSION}
+    COMPATIBILITY AnyNewerVersion)
+
+# install CMake package configs
+install(FILES
+        "${CMAKE_CURRENT_BINARY_DIR}/mylibConfig.cmake"
+        "${CMAKE_CURRENT_BINARY_DIR}/mylibConfigVersion.cmake"
+        DESTINATION ${CMAKE_INSTALL_LIBDIR}/cmake/mylib)
+
diff --git a/cmake/Findsodium.cmake b/cmake/Findsodium.cmake
new file mode 100644
index 0000000..3792815
--- /dev/null
+++ b/cmake/Findsodium.cmake
@@ -0,0 +1,291 @@
+# Written in 2016 by Henrik Steffen Gaßmann <henrik@gassmann.onl>
+#
+# To the extent possible under law, the author(s) have dedicated all copyright
+# and related and neighboring rights to this software to the public domain
+# worldwide. This software is distributed without any warranty.
+#
+# You should have received a copy of the CC0 Public Domain Dedication along with
+# this software. If not, see
+#
+# http://creativecommons.org/publicdomain/zero/1.0/
+#
+# ##############################################################################
+# Tries to find the local libsodium installation.
+#
+# On Windows the sodium_DIR environment variable is used as a default hint which
+# can be overridden by setting the corresponding cmake variable.
+#
+# Once done the following variables will be defined:
+#
+# sodium_FOUND sodium_INCLUDE_DIR sodium_LIBRARY_DEBUG sodium_LIBRARY_RELEASE
+# sodium_VERSION_STRING
+#
+# Furthermore an imported "sodium" target is created.
+#
+
+if(CMAKE_C_COMPILER_ID STREQUAL "GNU" OR CMAKE_C_COMPILER_ID STREQUAL "Clang")
+    set(_GCC_COMPATIBLE 1)
+endif()
+
+# static library option
+if(NOT DEFINED sodium_USE_STATIC_LIBS)
+    option(sodium_USE_STATIC_LIBS "enable to statically link against sodium" OFF)
+endif()
+if(NOT (sodium_USE_STATIC_LIBS EQUAL sodium_USE_STATIC_LIBS_LAST))
+    unset(sodium_LIBRARY CACHE)
+    unset(sodium_LIBRARY_DEBUG CACHE)
+    unset(sodium_LIBRARY_RELEASE CACHE)
+    unset(sodium_DLL_DEBUG CACHE)
+    unset(sodium_DLL_RELEASE CACHE)
+    set(sodium_USE_STATIC_LIBS_LAST
+            ${sodium_USE_STATIC_LIBS}
+            CACHE INTERNAL "internal change tracking variable")
+endif()
+
+# ##############################################################################
+# UNIX
+if(UNIX)
+    # import pkg-config
+    find_package(PkgConfig QUIET)
+    if(PKG_CONFIG_FOUND)
+        pkg_check_modules(sodium_PKG QUIET libsodium)
+    endif()
+
+    if(sodium_USE_STATIC_LIBS)
+        if(sodium_PKG_STATIC_LIBRARIES)
+            foreach(_libname ${sodium_PKG_STATIC_LIBRARIES})
+                if(NOT _libname MATCHES "^lib.*\\.a$") # ignore strings already ending
+                    # with .a
+                    list(INSERT sodium_PKG_STATIC_LIBRARIES 0 "lib${_libname}.a")
+                endif()
+            endforeach()
+            list(REMOVE_DUPLICATES sodium_PKG_STATIC_LIBRARIES)
+        else()
+            # if pkgconfig for libsodium doesn't provide static lib info, then
+            # override PKG_STATIC here..
+            set(sodium_PKG_STATIC_LIBRARIES libsodium.a)
+        endif()
+
+        set(XPREFIX sodium_PKG_STATIC)
+    else()
+        if(sodium_PKG_LIBRARIES STREQUAL "")
+            set(sodium_PKG_LIBRARIES sodium)
+        endif()
+
+        set(XPREFIX sodium_PKG)
+    endif()
+
+    find_path(sodium_INCLUDE_DIR sodium.h HINTS ${${XPREFIX}_INCLUDE_DIRS})
+    find_library(sodium_LIBRARY_DEBUG
+            NAMES ${${XPREFIX}_LIBRARIES}
+            HINTS ${${XPREFIX}_LIBRARY_DIRS})
+    find_library(sodium_LIBRARY_RELEASE
+            NAMES ${${XPREFIX}_LIBRARIES}
+            HINTS ${${XPREFIX}_LIBRARY_DIRS})
+
+    # ############################################################################
+    # Windows
+elseif(WIN32)
+    set(sodium_DIR "$ENV{sodium_DIR}" CACHE FILEPATH "sodium install directory")
+    mark_as_advanced(sodium_DIR)
+
+    find_path(sodium_INCLUDE_DIR sodium.h
+            HINTS ${sodium_DIR}
+            PATH_SUFFIXES include)
+
+    if(MSVC)
+        # detect target architecture
+        file(WRITE "${CMAKE_CURRENT_BINARY_DIR}/arch.c" [=[
+            #if defined _M_IX86
+            #error ARCH_VALUE x86_32
+            #elif defined _M_X64
+            #error ARCH_VALUE x86_64
+            #endif
+            #error ARCH_VALUE unknown
+        ]=])
+        try_compile(_UNUSED_VAR "${CMAKE_CURRENT_BINARY_DIR}"
+                "${CMAKE_CURRENT_BINARY_DIR}/arch.c"
+                OUTPUT_VARIABLE _COMPILATION_LOG)
+        string(REGEX
+                REPLACE ".*ARCH_VALUE ([a-zA-Z0-9_]+).*"
+                "\\1"
+                _TARGET_ARCH
+                "${_COMPILATION_LOG}")
+
+        # construct library path
+        if(_TARGET_ARCH STREQUAL "x86_32")
+            string(APPEND _PLATFORM_PATH "Win32")
+        elseif(_TARGET_ARCH STREQUAL "x86_64")
+            string(APPEND _PLATFORM_PATH "x64")
+        else()
+            message(
+                    FATAL_ERROR
+                    "the ${_TARGET_ARCH} architecture is not supported by Findsodium.cmake."
+            )
+        endif()
+        string(APPEND _PLATFORM_PATH "/$$CONFIG$$")
+
+        if(MSVC_VERSION LESS 1900)
+            math(EXPR _VS_VERSION "${MSVC_VERSION} / 10 - 60")
+        else()
+            math(EXPR _VS_VERSION "${MSVC_VERSION} / 10 - 50")
+        endif()
+        string(APPEND _PLATFORM_PATH "/v${_VS_VERSION}")
+
+        if(sodium_USE_STATIC_LIBS)
+            string(APPEND _PLATFORM_PATH "/static")
+        else()
+            string(APPEND _PLATFORM_PATH "/dynamic")
+        endif()
+
+        string(REPLACE "$$CONFIG$$"
+                "Debug"
+                _DEBUG_PATH_SUFFIX
+                "${_PLATFORM_PATH}")
+        string(REPLACE "$$CONFIG$$"
+                "Release"
+                _RELEASE_PATH_SUFFIX
+                "${_PLATFORM_PATH}")
+
+        find_library(sodium_LIBRARY_DEBUG libsodium.lib
+                HINTS ${sodium_DIR}
+                PATH_SUFFIXES ${_DEBUG_PATH_SUFFIX})
+        find_library(sodium_LIBRARY_RELEASE libsodium.lib
+                HINTS ${sodium_DIR}
+                PATH_SUFFIXES ${_RELEASE_PATH_SUFFIX})
+        if(NOT sodium_USE_STATIC_LIBS)
+            set(CMAKE_FIND_LIBRARY_SUFFIXES_BCK ${CMAKE_FIND_LIBRARY_SUFFIXES})
+            set(CMAKE_FIND_LIBRARY_SUFFIXES ".dll")
+            find_library(sodium_DLL_DEBUG libsodium
+                    HINTS ${sodium_DIR}
+                    PATH_SUFFIXES ${_DEBUG_PATH_SUFFIX})
+            find_library(sodium_DLL_RELEASE libsodium
+                    HINTS ${sodium_DIR}
+                    PATH_SUFFIXES ${_RELEASE_PATH_SUFFIX})
+            set(CMAKE_FIND_LIBRARY_SUFFIXES ${CMAKE_FIND_LIBRARY_SUFFIXES_BCK})
+        endif()
+
+    elseif(_GCC_COMPATIBLE)
+        if(sodium_USE_STATIC_LIBS)
+            find_library(sodium_LIBRARY_DEBUG libsodium.a
+                    HINTS ${sodium_DIR}
+                    PATH_SUFFIXES lib)
+            find_library(sodium_LIBRARY_RELEASE libsodium.a
+                    HINTS ${sodium_DIR}
+                    PATH_SUFFIXES lib)
+        else()
+            find_library(sodium_LIBRARY_DEBUG libsodium.dll.a
+                    HINTS ${sodium_DIR}
+                    PATH_SUFFIXES lib)
+            find_library(sodium_LIBRARY_RELEASE libsodium.dll.a
+                    HINTS ${sodium_DIR}
+                    PATH_SUFFIXES lib)
+
+            file(GLOB _DLL
+                    LIST_DIRECTORIES false
+                    RELATIVE "${sodium_DIR}/bin"
+                    "${sodium_DIR}/bin/libsodium*.dll")
+            find_library(sodium_DLL_DEBUG ${_DLL} libsodium
+                    HINTS ${sodium_DIR}
+                    PATH_SUFFIXES bin)
+            find_library(sodium_DLL_RELEASE ${_DLL} libsodium
+                    HINTS ${sodium_DIR}
+                    PATH_SUFFIXES bin)
+        endif()
+    else()
+        message(FATAL_ERROR "this platform is not supported by FindSodium.cmake")
+    endif()
+
+    # ############################################################################
+    # unsupported
+else()
+    message(FATAL_ERROR "this platform is not supported by FindSodium.cmake")
+endif()
+
+# ##############################################################################
+# common stuff
+
+# extract sodium version
+if(sodium_INCLUDE_DIR)
+    set(_VERSION_HEADER "${sodium_INCLUDE_DIR}/sodium/version.h")
+    if(EXISTS "${_VERSION_HEADER}")
+        file(READ "${_VERSION_HEADER}" _VERSION_HEADER_CONTENT)
+        string(REGEX
+                REPLACE ".*define[ \t]+SODIUM_VERSION_STRING[^\"]+\"([^\"]+)\".*"
+                "\\1"
+                sodium_VERSION_STRING
+                "${_VERSION_HEADER_CONTENT}")
+        set(sodium_VERSION_STRING "${sodium_VERSION_STRING}")
+    endif()
+endif()
+
+# communicate results
+include(FindPackageHandleStandardArgs)
+find_package_handle_standard_args(sodium
+        REQUIRED_VARS
+        sodium_LIBRARY_RELEASE
+        sodium_LIBRARY_DEBUG
+        sodium_INCLUDE_DIR
+        VERSION_VAR
+        sodium_VERSION_STRING)
+
+# mark file paths as advanced
+mark_as_advanced(sodium_INCLUDE_DIR)
+mark_as_advanced(sodium_LIBRARY_DEBUG)
+mark_as_advanced(sodium_LIBRARY_RELEASE)
+if(WIN32)
+    mark_as_advanced(sodium_DLL_DEBUG)
+    mark_as_advanced(sodium_DLL_RELEASE)
+endif()
+
+# create imported target
+if(sodium_USE_STATIC_LIBS)
+    set(_LIB_TYPE STATIC)
+else()
+    set(_LIB_TYPE SHARED)
+endif()
+add_library(sodium ${_LIB_TYPE} IMPORTED)
+
+set_target_properties(sodium
+        PROPERTIES INTERFACE_INCLUDE_DIRECTORIES
+        "${sodium_INCLUDE_DIR}"
+        IMPORTED_LINK_INTERFACE_LANGUAGES
+        "C")
+
+if(sodium_USE_STATIC_LIBS)
+    set_target_properties(sodium
+            PROPERTIES INTERFACE_COMPILE_DEFINITIONS
+            "SODIUM_STATIC"
+            IMPORTED_LOCATION
+            "${sodium_LIBRARY_RELEASE}"
+            IMPORTED_LOCATION_DEBUG
+            "${sodium_LIBRARY_DEBUG}")
+else()
+    if(UNIX)
+        set_target_properties(sodium
+                PROPERTIES IMPORTED_LOCATION
+                "${sodium_LIBRARY_RELEASE}"
+                IMPORTED_LOCATION_DEBUG
+                "${sodium_LIBRARY_DEBUG}")
+    elseif(WIN32)
+        set_target_properties(sodium
+                PROPERTIES IMPORTED_IMPLIB
+                "${sodium_LIBRARY_RELEASE}"
+                IMPORTED_IMPLIB_DEBUG
+                "${sodium_LIBRARY_DEBUG}")
+        if(NOT (sodium_DLL_DEBUG MATCHES ".*-NOTFOUND"))
+            set_target_properties(sodium
+                    PROPERTIES IMPORTED_LOCATION_DEBUG
+                    "${sodium_DLL_DEBUG}")
+        endif()
+        if(NOT (sodium_DLL_RELEASE MATCHES ".*-NOTFOUND"))
+            set_target_properties(sodium
+                    PROPERTIES IMPORTED_LOCATION_RELWITHDEBINFO
+                    "${sodium_DLL_RELEASE}"
+                    IMPORTED_LOCATION_MINSIZEREL
+                    "${sodium_DLL_RELEASE}"
+                    IMPORTED_LOCATION_RELEASE
+                    "${sodium_DLL_RELEASE}")
+        endif()
+    endif()
+endif()
\ No newline at end of file
diff --git a/cmake/package.cmake.in b/cmake/package.cmake.in
new file mode 100644
index 0000000..9f0057e
--- /dev/null
+++ b/cmake/package.cmake.in
@@ -0,0 +1,12 @@
+@PACKAGE_INIT@
+
+list(APPEND CMAKE_MODULE_PATH "${CMAKE_CURRENT_LIST_DIR}/modules/")
+
+include(CMakeFindDependencyMacro)
+
+find_dependency(kut)
+find_dependency(sodium)
+
+include("${CMAKE_CURRENT_LIST_DIR}/mylibTargets.cmake")
+
+check_required_components(mylib)
\ No newline at end of file
diff --git a/test_internal.cpp b/test_internal.cpp
new file mode 100644
index 0000000..ac6d14a
--- /dev/null
+++ b/test_internal.cpp
@@ -0,0 +1,9 @@
+#include <iostream>
+
+#include <sodium.h>
+#include "cool/cool.h"
+
+void internal_function() {
+  printf("sodium: %d\n", sodium_init());
+  cool::foo();
+}
diff --git a/test_internal.h b/test_internal.h
new file mode 100644
index 0000000..25c2477
--- /dev/null
+++ b/test_internal.h
@@ -0,0 +1 @@
+void internal_function();
diff --git a/test_library.cpp b/test_library.cpp
new file mode 100644
index 0000000..a232086
--- /dev/null
+++ b/test_library.cpp
@@ -0,0 +1,7 @@
+#include "test_library.h"
+
+#include <iostream>
+
+void hello() {
+  internal_function();
+}
diff --git a/test_library.h b/test_library.h
new file mode 100644
index 0000000..d350658
--- /dev/null
+++ b/test_library.h
@@ -0,0 +1,5 @@
+#pragma once
+
+#include "test_internal.h"
+
+void hello();