Support CMake builds of library itself and generate finders

CMakeLists.txt

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+cmake_minimum_required(VERSION 3.8)
+
+set(VERSION 3.2)
+
+project(
+  mxml
+  VERSION ${VERSION}
+  LANGUAGES C)
+
+if(NOT CMAKE_BUILD_TYPE)
+  set(CMAKE_BUILD_TYPE Release)
+endif()
+
+include(CheckTypeSize)
+check_type_size("long long" HAVE_LONG_LONG)
+include(CheckFunctionExists)
+check_function_exists(snprintf HAVE_SNPRINTF)
+check_function_exists(vasprintf HAVE_VASPRINTF)
+check_function_exists(vsnprintf HAVE_VSNPRINTF)
+check_function_exists(strdup HAVE_STRDUP)
+check_function_exists(strlcat HAVE_STRLCAT)
+check_function_exists(strlcpy HAVE_STRLCPY)
+set(MXML_VERSION "Mini-XML v${VERSION}")
+
+configure_file(cmake/config.h.in config.h)
+set(HEADERS mxml-private.h ${CMAKE_CURRENT_BINARY_DIR}/config.h)
+
+set(SOURCES
+    mxml-attr.c
+    mxml-entity.c
+    mxml-file.c
+    mxml-get.c
+    mxml-index.c
+    mxml-node.c
+    mxml-private.c
+    mxml-search.c
+    mxml-set.c
+    mxml-string.c)
+
+add_library(${PROJECT_NAME} ${SOURCES} ${HEADERS})
+target_include_directories(${PROJECT_NAME} PRIVATE ${CMAKE_CURRENT_BINARY_DIR})
+add_library(MSweet::${PROJECT_NAME} ALIAS ${PROJECT_NAME})
+
+# install library
+install(
+  TARGETS ${PROJECT_NAME}
+  EXPORT ${PROJECT_NAME}Targets
+  LIBRARY DESTINATION lib
+  ARCHIVE DESTINATION lib
+  RUNTIME DESTINATION bin
+  INCLUDES
+  DESTINATION include)
+
+install(
+  EXPORT ${PROJECT_NAME}Targets
+  DESTINATION lib/cmake/${PROJECT_NAME}
+  FILE ${PROJECT_NAME}Targets.cmake
+  NAMESPACE MSweet::)
+
+install(FILES mxml.h DESTINATION include)
+
+include(CMakePackageConfigHelpers)
+write_basic_package_version_file(${PROJECT_NAME}ConfigVersion.cmake
+                                 COMPATIBILITY SameMajorVersion)
+install(FILES cmake/${PROJECT_NAME}Config.cmake
+              ${CMAKE_CURRENT_BINARY_DIR}/${PROJECT_NAME}ConfigVersion.cmake
+        DESTINATION lib/cmake/${PROJECT_NAME})

cmake/config.h.in

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+/*
+ * Xcode configuration file for Mini-XML, a small XML file parsing library.
+ *
+ * https://www.msweet.org/mxml
+ *
+ * Copyright © 2003-2020 by Michael R Sweet.
+ *
+ * Licensed under Apache License v2.0.  See the file "LICENSE" for more
+ * information.
+ */
+
+/*
+ * Include necessary headers...
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <stdarg.h>
+#include <ctype.h>
+
+
+/*
+ * Version number...
+ */
+
+#cmakedefine MXML_VERSION "@MXML_VERSION@"
+
+
+/*
+ * Inline function support...
+ */
+
+#define inline
+
+
+/*
+ * Long long support...
+ */
+
+#cmakedefine HAVE_LONG_LONG 1
+
+
+/*
+ * Do we have the *printf() functions?
+ */
+
+#cmakedefine HAVE_SNPRINTF 1
+#cmakedefine HAVE_VASPRINTF 1
+#cmakedefine HAVE_VSNPRINTF 1
+
+
+/*
+ * Do we have the strXXX() functions?
+ */
+
+#cmakedefine HAVE_STRDUP 1
+#cmakedefine HAVE_STRLCAT 1
+#cmakedefine HAVE_STRLCPY 1
+
+
+/*
+ * Do we have threading support?
+ */
+
+#define HAVE_PTHREAD_H 1
+
+
+/*
+ * Define prototypes for string functions as needed...
+ */
+
+extern char	*_mxml_strdupf(const char *, ...);
+extern char	*_mxml_vstrdupf(const char *, va_list);

cmake/mxmlConfig.cmake

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+include(CMakeFindDependencyMacro)
+include("${CMAKE_CURRENT_LIST_DIR}/mxmlTargets.cmake")