build: minor cleanup

CMakeLists.txt

@@ -1,17 +1,19 @@
 cmake_minimum_required(VERSION 3.5)
 project(hashmap VERSION 1.0.0 LANGUAGES C)
 
+set(CMAKE_C_STANDARD 99)
+
 ##############################################
 # Create target and set properties
 
 add_library(hashmap
     src/hashmap.c
 )
 
-#Add an alias so that library can be used inside the build tree, e.g. when testing
+# Add an alias so that library can be used inside the build tree, e.g. when testing
 add_library(HashMap::HashMap ALIAS hashmap)
 
-#Set target properties
+# Set target properties
 target_include_directories(hashmap
     PUBLIC
         $<INSTALL_INTERFACE:include>
@@ -34,12 +36,12 @@ install(TARGETS hashmap
     ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR}
 )
 
-#This is required so that the exported target has the name HashMap and not hashmap
+# This is required so that the exported target has the name HashMap and not hashmap
 set_target_properties(hashmap PROPERTIES EXPORT_NAME HashMap)
 
 install(DIRECTORY include/ DESTINATION ${CMAKE_INSTALL_INCLUDEDIR})
 
-#Export the targets to a script
+# Export the targets to a script
 install(EXPORT hashmap-targets
   FILE
     HashMapTargets.cmake
@@ -49,7 +51,7 @@ install(EXPORT hashmap-targets
     ${INSTALL_CONFIGDIR}
 )
 
-#Create a ConfigVersion.cmake file
+# Create a ConfigVersion.cmake file
 include(CMakePackageConfigHelpers)
 write_basic_package_version_file(
     ${CMAKE_CURRENT_BINARY_DIR}/HashMapConfigVersion.cmake
@@ -62,7 +64,7 @@ configure_package_config_file(${CMAKE_CURRENT_LIST_DIR}/cmake/HashMapConfig.cmak
     INSTALL_DESTINATION ${INSTALL_CONFIGDIR}
 )
 
-#Install the config, configversion and custom find modules
+# Install the config, configversion and custom find modules
 install(FILES
     ${CMAKE_CURRENT_BINARY_DIR}/HashMapConfig.cmake
     ${CMAKE_CURRENT_BINARY_DIR}/HashMapConfigVersion.cmake

include/hashmap.h

@@ -5,8 +5,7 @@
  * it under the terms of the MIT license. See LICENSE for details.
  */
 
-#ifndef __HASHMAP_H__
-#define __HASHMAP_H__
+#pragma once
 
 #include <stddef.h>
 
@@ -276,6 +275,3 @@ double hashmap_collisions_mean(const struct hashmap *map);
 double hashmap_collisions_variance(const struct hashmap *map);
 #endif
 
-
-#endif /* __HASHMAP_H__ */
-

src/hashmap.c

@@ -12,7 +12,7 @@
 #include <ctype.h>
 #include <errno.h>
 
-#include "hashmap.h"
+#include <hashmap.h>
 
 #ifndef HASHMAP_NOASSERT
 #include <assert.h>