This file was created using the Doxypressapp GUI for generating Doxypress-Configuration-Files. It can be seen as an example. The Parameter "input-source" in Line 265 is responsible for configuring which source files shall be read.

doxy2latex.json

{
    "clang": {
        "clang-compilation-path": "",
        "clang-dialect": "-std=c++20",
        "clang-flags": [
            ""
        ],
        "clang-include-input-source": true,
        "clang-parsing": false,
        "clang-use-headers": true
    },
    "configuration": {
        "allow-sub-grouping": true,
        "allow-unicode-names": false,
        "always-detailed-sec": false,
        "auto-link": true,
        "brief-member-desc": true,
        "built-in-stl-support": false,
        "case-sensitive-fname": true,
        "cpp-cli-support": false,
        "create-subdirs": false,
        "duplicate-docs": false,
        "enabled-sections": [
            ""
        ],
        "extract-all": true,
        "extract-anon-namespaces": true,
        "extract-local-classes": true,
        "extract-local-methods": true,
        "extract-package": false,
        "extract-private": false,
        "extract-private-virtual": false,
        "extract-static": false,
        "file-version-filter": "",
        "force-local-includes": false,
        "full-path-names": true,
        "generate-bug-list": true,
        "generate-deprecate-list": true,
        "generate-test-list": true,
        "generate-todo-list": true,
        "group-nested-compounds": false,
        "hide-compound-ref": false,
        "hide-friend-compounds": false,
        "hide-in-body-docs": false,
        "hide-navtree-members": false,
        "hide-scope-names": false,
        "hide-undoc-classes": false,
        "hide-undoc-members": false,
        "idl-support": true,
        "inherit-docs": true,
        "inline-grouped-classes": false,
        "inline-info": true,
        "inline-inherited-member": false,
        "inline-simple-struct": false,
        "internal-docs": true,
        "javadoc-auto-brief": false,
        "language-mapping": [
            ""
        ],
        "layout-file": "",
        "main-page-name": "",
        "main-page-omit": false,
        "markdown": true,
        "max-init-lines": 30,
        "multiline-cpp-brief": false,
        "ns-alias": [
            ""
        ],
        "python-docstring": false,
        "qt-auto-brief": false,
        "repeat-brief": true,
        "separate-member-pages": false,
        "short-names": false,
        "show-file-page": true,
        "show-grouped-members-inc": true,
        "show-include-files": true,
        "show-namespace-page": true,
        "show-used-files": true,
        "sip-support": false,
        "sort-brief-docs": false,
        "sort-by-scope-name": false,
        "sort-class-case-sensitive": false,
        "sort-constructors-first": false,
        "sort-group-names": false,
        "sort-member-docs": true,
        "strict-sig-matching": false,
        "tcl-subst": [
            ""
        ],
        "toc-include-headers": 0,
        "use-typedef-name": false
    },
    "dot": {
        "class-diagrams": true,
        "dia-file-dirs": [
            ""
        ],
        "dia-path": "",
        "directory-graph": true,
        "dot-call": false,
        "dot-called-by": false,
        "dot-class-graph": true,
        "dot-cleanup": true,
        "dot-collaboration": true,
        "dot-file-dirs": [
            ""
        ],
        "dot-font-name": "Helvetica",
        "dot-font-path": "",
        "dot-font-size": 10,
        "dot-graph-max-depth": 0,
        "dot-graph-max-nodes": 50,
        "dot-hierarchy": true,
        "dot-image-format": "png",
        "dot-include": true,
        "dot-included-by": true,
        "dot-multiple-targets": false,
        "dot-num-threads": 0,
        "dot-path": "",
        "dot-transparent": false,
        "generate-legend": true,
        "group-graphs": true,
        "have-dot": false,
        "hide-undoc-relations": true,
        "interactive-svg": false,
        "msc-file-dirs": [
            ""
        ],
        "mscgen-path": "",
        "plantuml-cfg-file": "",
        "plantuml-inc-path": [
            ""
        ],
        "plantuml-jar-path": "",
        "template-relations": false,
        "uml-limit-num-fields": 10,
        "uml-look": false
    },
    "doxypress-format": 1,
    "doxypress-updated": "2018-Jun-30",
    "external": {
        "all-externals": false,
        "external-groups": true,
        "external-pages": true,
        "generate-tagfile": "",
        "tag-files": [
            ""
        ]
    },
    "general": {
        "abbreviate-brief": [
            "The $name class",
            "The $name widget",
            "The $name file",
            "is",
            "provides",
            "specifies",
            "contains",
            "represents",
            "a",
            "an",
            "the"
        ],
        "aliases": [
            ""
        ],
        "lookup-cache-size": 0,
        "optimize-c": false,
        "optimize-cplus": true,
        "optimize-fortran": false,
        "optimize-java": false,
        "optimize-python": false,
        "output-dir": "",
        "output-language": "English",
        "strip-from-inc-path": [
            ""
        ],
        "strip-from-path": [
            ""
        ],
        "tab-size": 4
    },
    "index": {
        "alpha-index": true,
        "cols-in-index": 5,
        "ignore-prefix": [
            ""
        ]
    },
    "input": {
        "example-patterns": [
            "*"
        ],
        "example-recursive": false,
        "example-source": [
            ""
        ],
        "exclude-files": [
            ""
        ],
        "exclude-patterns": [
            ""
        ],
        "exclude-symbols": [
            ""
        ],
        "exclude-symlinks": false,
        "filter-patterns": [
            ""
        ],
        "filter-program": "",
        "filter-source-files": false,
        "filter-source-patterns": [
            ""
        ],
        "image-path": [
            ""
        ],
        "input-encoding": "UTF-8",
        "input-patterns": [
            "*.as",
            "*.c",
            "*.cc",
            "*.cpp",
            "*.cxx",
            "*.c++",
            "*.cs",
            "*.d",
            "*.ddl",
            "*.dox",
            "*.for",
            "*.f",
            "*.f90",
            "*.h",
            "*.hh",
            "*.hxx",
            "*.hpp",
            "*.h++",
            "*.idl",
            "*.ii",
            "*.ixx",
            "*.ipp",
            "*.i++",
            "*.inc",
            "*.inl",
            "*.java",
            "*.js",
            "*.m",
            "*.md",
            "*.mm",
            "*.markdown",
            "*.odl",
            "*.php",
            "*.php3",
            "*.php4",
            "*.php5",
            "*.phtml",
            "*.py",
            "*.pyw",
            "*.qsf",
            "*.tcl",
            "*.ucf"
        ],
        "input-recursive": false,
        "input-source": [
            "./src"
        ],
        "mdfile-mainpage": ""
    },
    "messages": {
        "quiet": false,
        "warn-doc-error": true,
        "warn-format": "$file:$line: $text",
        "warn-logfile": "",
        "warn-param-mismatch": false,
        "warn-undoc": true,
        "warn-undoc-param": false,
        "warnings": true
    },
    "output-latex": {
        "cite-bib-files": [
            ""
        ],
        "generate-latex": true,
        "latex-batch-mode": false,
        "latex-bib-style": "plain",
        "latex-cmd-name": "pdflatex",
        "latex-compact": false,
        "latex-extra-files": [
            ""
        ],
        "latex-extra-packages": [
            ""
        ],
        "latex-footer": "",
        "latex-header": "",
        "latex-hide-indices": false,
        "latex-hyper-pdf": true,
        "latex-output": "doku",
        "latex-paper-type": "a4",
        "latex-pdf": true,
        "latex-ps": false,
        "latex-source-code": false,
        "latex-stylesheets": [
            ""
        ],
        "latex-timestamp": false,
        "make-index-cmd-name": "makeindex"
    },
    "preprocessor": {
        "enable-preprocessing": true,
        "expand-as-defined": [
            ""
        ],
        "expand-only-predefined": false,
        "include-path": [
            ""
        ],
        "include-patterns": [
            ""
        ],
        "macro-expansion": false,
        "predefined-macros": [
            ""
        ],
        "search-includes": true,
        "skip-function-macros": true
    },
    "project": {
        "project-brief": "Project Description",
        "project-logo": "",
        "project-name": "Project Name",
        "project-version": "0.1"
    },
    "source": {
        "inline-source": false,
        "ref-by-relation": false,
        "ref-link-source": true,
        "ref-relation": false,
        "source-code": true,
        "source-tooltips": true,
        "strip-code-comments": true,
        "suffix-exclude-navtree": [
            "doc",
            "dox",
            "md",
            "markdown",
            "txt"
        ],
        "suffix-header-navtree": [
            "h",
            "hh",
            "hxx",
            "hpp",
            "h++",
            "idl",
            "ddl",
            "pidl"
        ],
        "suffix-source-navtree": [
            "c",
            "cc",
            "cxx",
            "cpp",
            "c++",
            "ii",
            "ixx",
            "ipp",
            "i++",
            "inl",
            "java",
            "m",
            "mm",
            "xml"
        ],
        "use-htags": false,
        "verbatim-headers": true
    }
}