diff --git a/src/myx/base/config.cpp b/src/myx/base/config.cpp
index 6a7852b..ada0f9c 100644
--- a/src/myx/base/config.cpp
+++ b/src/myx/base/config.cpp
@@ -1 +1,5 @@
+#ifndef MYXLIB_BUILD_LIBRARIES
+#error Define MYXLIB_BUILD_LIBRARIES to compile this file.
+#endif
+
 #include "config.hpp"
diff --git a/src/myx/base/config.hpp b/src/myx/base/config.hpp
index d90a0ef..bd755ae 100644
--- a/src/myx/base/config.hpp
+++ b/src/myx/base/config.hpp
@@ -5,8 +5,10 @@
 
 #ifdef MYXLIB_BUILD_LIBRARIES
 #undef MYXLIB_HEADER_ONLY
+#define MYXLIB_INLINE inline
 #else
 #define MYXLIB_HEADER_ONLY
+#define MYXLIB_INLINE inline
 #endif
 
 #ifdef MYXLIB_HEADER_ONLY
diff --git a/src/myx/base/enum_bitmask_operations.hpp b/src/myx/base/enum_bitmask_operations.hpp
index 896a952..12a8d56 100644
--- a/src/myx/base/enum_bitmask_operations.hpp
+++ b/src/myx/base/enum_bitmask_operations.hpp
@@ -1,7 +1,6 @@
 #ifndef MYX_BASE_ENUM_BITWISE_OPERATIONS_HPP_
 #define MYX_BASE_ENUM_BITWISE_OPERATIONS_HPP_
 
-
 #pragma once
 
 #include <type_traits>
diff --git a/src/myx/filesystem/current_executable-inl.hpp b/src/myx/filesystem/current_executable-inl.hpp
index 2e8925d..d392375 100644
--- a/src/myx/filesystem/current_executable-inl.hpp
+++ b/src/myx/filesystem/current_executable-inl.hpp
@@ -22,14 +22,14 @@ namespace filesystem {
 error "Class CurrentExecutable is supported only in Linux"
 #endif
 
-CurrentExecutable::CurrentExecutable() :
+MYXLIB_INLINE CurrentExecutable::CurrentExecutable() :
 	m_procFilePath( QStringLiteral( "/proc/self/exe" ) )
 {
 	m_canonicalFilePath = m_procFilePath.canonicalFilePath();
 }
 
 
-const QFileInfo& CurrentExecutable::canonicalFilePath() const
+MYXLIB_INLINE const QFileInfo& CurrentExecutable::canonicalFilePath() const
 {
 	return( m_canonicalFilePath );
 }
diff --git a/src/myx/filesystem/current_executable.cpp b/src/myx/filesystem/current_executable.cpp
index 53c42a4..2c53d35 100644
--- a/src/myx/filesystem/current_executable.cpp
+++ b/src/myx/filesystem/current_executable.cpp
@@ -1 +1,5 @@
+#ifndef MYXLIB_BUILD_LIBRARIES
+#error Define MYXLIB_BUILD_LIBRARIES to compile this file.
+#endif
+
 #include <myx/filesystem/current_executable-inl.hpp>
diff --git a/src/myx/filesystem/paths-inl.hpp b/src/myx/filesystem/paths-inl.hpp
index f6a54df..b499598 100644
--- a/src/myx/filesystem/paths-inl.hpp
+++ b/src/myx/filesystem/paths-inl.hpp
@@ -19,9 +19,9 @@ namespace myx {
 
 namespace filesystem {
 
-Paths::Paths() = default;
+MYXLIB_INLINE Paths::Paths() = default;
 
-Paths::HierarchyType Paths::getHierarchyType()
+MYXLIB_INLINE Paths::HierarchyType Paths::getHierarchyType()
 {
 	QRegExp binUnityRegexp( "/s*bin/unity$" );
 	QRegExp binRegexp( "/s*bin$" );
@@ -170,7 +170,7 @@ Paths::HierarchyType Paths::getHierarchyType()
 } // Paths::getHierarchyType
 
 
-bool Paths::init( const QString& projectDir, const QString& configFileExtension )
+MYXLIB_INLINE bool Paths::init( const QString& projectDir, const QString& configFileExtension )
 {
 	m_projectName = projectDir.isEmpty() ? m_currentExecutable.m_canonicalFilePath.fileName()
 	                                     : projectDir;
@@ -214,7 +214,7 @@ bool Paths::init( const QString& projectDir, const QString& configFileExtension
 } // Paths::updatePaths
 
 
-bool Paths::makeDefaultDirectories()
+MYXLIB_INLINE bool Paths::makeDefaultDirectories()
 {
 	bool status = true;
 
@@ -226,7 +226,7 @@ bool Paths::makeDefaultDirectories()
 }
 
 
-QString Paths::findConfigFile( const QString& defaultConfigFile )
+MYXLIB_INLINE QString Paths::findConfigFile( const QString& defaultConfigFile )
 {
 	if ( !defaultConfigFile.isEmpty() && QFileInfo( defaultConfigFile ).isReadable() )
 	{
@@ -251,103 +251,103 @@ QString Paths::findConfigFile( const QString& defaultConfigFile )
 } // Paths::findConfigFile
 
 
-QDir Paths::executableFileDirectory() const
+MYXLIB_INLINE QDir Paths::executableFileDirectory() const
 {
 	return( m_currentExecutable.m_canonicalFilePath.dir() );
 }
 
 
-const QDir& Paths::userConfigDirectory() const
+MYXLIB_INLINE const QDir& Paths::userConfigDirectory() const
 {
 	return( m_userConfigDirectory );
 }
 
 
-const QDir& Paths::systemConfigDirectory() const
+MYXLIB_INLINE const QDir& Paths::systemConfigDirectory() const
 {
 	return( m_systemConfigDirectory );
 }
 
 
-const QFileInfo& Paths::configFilePath() const
+MYXLIB_INLINE const QFileInfo& Paths::configFilePath() const
 {
 	return( m_configFilePath );
 }
 
 
-const QString& Paths::configFileName() const
+MYXLIB_INLINE const QString& Paths::configFileName() const
 {
 	return( m_configFileName );
 }
 
 
-const QString& Paths::configFileExtension() const
+MYXLIB_INLINE const QString& Paths::configFileExtension() const
 {
 	return( m_configFileExtension );
 }
 
 
-const QDir& Paths::userVarDataDirectory() const
+MYXLIB_INLINE const QDir& Paths::userVarDataDirectory() const
 {
 	return( m_userVarDataDirectory );
 }
 
 
-const QDir& Paths::systemVarDataDirectory() const
+MYXLIB_INLINE const QDir& Paths::systemVarDataDirectory() const
 {
 	return( m_systemVarDataDirectory );
 }
 
 
-const QDir& Paths::userConstDataDirectory() const
+MYXLIB_INLINE const QDir& Paths::userConstDataDirectory() const
 {
 	return( m_userConstDataDirectory );
 }
 
 
-const QDir& Paths::systemConstDataDirectory() const
+MYXLIB_INLINE const QDir& Paths::systemConstDataDirectory() const
 {
 	return( m_systemConstDataDirectory );
 }
 
 
-const QDir& Paths::userLogDirectory() const
+MYXLIB_INLINE const QDir& Paths::userLogDirectory() const
 {
 	return( m_userLogDirectory );
 }
 
 
-const QDir& Paths::systemLogDirectory() const
+MYXLIB_INLINE const QDir& Paths::systemLogDirectory() const
 {
 	return( m_systemLogDirectory );
 }
 
 
-const QDir& Paths::tempDirectory() const
+MYXLIB_INLINE const QDir& Paths::tempDirectory() const
 {
 	return( m_tempDirectory );
 }
 
 
-const QDir& Paths::homeDirectory() const
+MYXLIB_INLINE const QDir& Paths::homeDirectory() const
 {
 	return( m_homeDirectory );
 }
 
 
-const QString& Paths::projectName() const
+MYXLIB_INLINE const QString& Paths::projectName() const
 {
 	return( m_projectName );
 }
 
 
-QString Paths::executableFileName() const
+MYXLIB_INLINE QString Paths::executableFileName() const
 {
 	return( m_currentExecutable.m_canonicalFilePath.fileName() );
 }
 
 
-const QFileInfo& Paths::executableFilePath() const
+MYXLIB_INLINE const QFileInfo& Paths::executableFilePath() const
 {
 	return( m_currentExecutable.m_canonicalFilePath );
 }
diff --git a/src/myx/filesystem/paths.cpp b/src/myx/filesystem/paths.cpp
index cbe3512..5401d28 100644
--- a/src/myx/filesystem/paths.cpp
+++ b/src/myx/filesystem/paths.cpp
@@ -1 +1,5 @@
+#ifndef MYXLIB_BUILD_LIBRARIES
+#error Define MYXLIB_BUILD_LIBRARIES to compile this file.
+#endif
+
 #include <myx/filesystem/paths-inl.hpp>
diff --git a/src/myx/filesystem/paths_mt-inl.hpp b/src/myx/filesystem/paths_mt-inl.hpp
index 999e42f..5cd6897 100644
--- a/src/myx/filesystem/paths_mt-inl.hpp
+++ b/src/myx/filesystem/paths_mt-inl.hpp
@@ -19,9 +19,9 @@ namespace myx {
 
 namespace filesystem {
 
-PathsMT::PathsMT() = default;
+MYXLIB_INLINE PathsMT::PathsMT() = default;
 
-PathsMT& PathsMT::instance()
+MYXLIB_INLINE PathsMT& PathsMT::instance()
 {
 	volatile PathsMT* localInstance = mInstance.load( std::memory_order_acquire );
 	if ( localInstance == nullptr )
diff --git a/src/myx/filesystem/paths_mt.cpp b/src/myx/filesystem/paths_mt.cpp
index d093dae..4f13001 100644
--- a/src/myx/filesystem/paths_mt.cpp
+++ b/src/myx/filesystem/paths_mt.cpp
@@ -1 +1,5 @@
+#ifndef MYXLIB_BUILD_LIBRARIES
+#error Define MYXLIB_BUILD_LIBRARIES to compile this file.
+#endif
+
 #include <myx/filesystem/paths_mt-inl.hpp>
diff --git a/src/myx/math/all.hpp b/src/myx/math/all.hpp
index 5fbba9c..061532d 100644
--- a/src/myx/math/all.hpp
+++ b/src/myx/math/all.hpp
@@ -1,3 +1,8 @@
+#ifndef MYX_MATH_ALL_HPP_
+#define MYX_MATH_ALL_HPP_
+
+#pragma once
+
 #include <myx/math/almost_equal_relative.hpp>
 #include <myx/math/almost_equal_relative_and_abs.hpp>
 #include <myx/math/almost_equal_ulps.hpp>
@@ -6,3 +11,5 @@
 #include <myx/math/functions.hpp>
 #include <myx/math/radar.hpp>
 #include <myx/math/units.hpp>
+
+#endif
diff --git a/src/myx/math/almost_equal_relative-inl.hpp b/src/myx/math/almost_equal_relative-inl.hpp
index fa2a225..ab41af9 100644
--- a/src/myx/math/almost_equal_relative-inl.hpp
+++ b/src/myx/math/almost_equal_relative-inl.hpp
@@ -1,3 +1,8 @@
+#ifndef MYX_MATH_ALMOST_EQUAL_RELATIVE_INL_HPP_
+#define MYX_MATH_ALMOST_EQUAL_RELATIVE_INL_HPP_
+
+#pragma once
+
 #ifndef MYXLIB_HEADER_ONLY
 #include <myx/math/almost_equal_relative.hpp>
 #endif
@@ -8,7 +13,7 @@ namespace myx {
 
 namespace math {
 
-bool almost_equal_relative( const float a, const float b,
+MYXLIB_INLINE bool almost_equal_relative( const float a, const float b,
                             const float maxRelDiff )
 {
 	float diff    = fabsf( a - b );
@@ -24,7 +29,7 @@ bool almost_equal_relative( const float a, const float b,
 }
 
 
-bool almost_equal_relative( const double a, const double b,
+MYXLIB_INLINE bool almost_equal_relative( const double a, const double b,
                             const double maxRelDiff )
 {
 	double diff    = fabs( a - b );
@@ -42,3 +47,5 @@ bool almost_equal_relative( const double a, const double b,
 } // namespace math
 
 } // namespace myx
+
+#endif
diff --git a/src/myx/math/almost_equal_relative.cpp b/src/myx/math/almost_equal_relative.cpp
index bc79e13..4b2770b 100644
--- a/src/myx/math/almost_equal_relative.cpp
+++ b/src/myx/math/almost_equal_relative.cpp
@@ -1 +1,5 @@
+#ifndef MYXLIB_BUILD_LIBRARIES
+#error Define MYXLIB_BUILD_LIBRARIES to compile this file.
+#endif
+
 #include <myx/math/almost_equal_relative-inl.hpp>
diff --git a/src/myx/math/almost_equal_relative.hpp b/src/myx/math/almost_equal_relative.hpp
index 3fd15ae..a16926c 100644
--- a/src/myx/math/almost_equal_relative.hpp
+++ b/src/myx/math/almost_equal_relative.hpp
@@ -1,6 +1,8 @@
 #ifndef MYX_MATH_ALMOST_EQUAL_RELATIVE_HPP_
 #define MYX_MATH_ALMOST_EQUAL_RELATIVE_HPP_
 
+#pragma once
+
 #include <myx/base/config.hpp>
 
 #include <cfloat>
diff --git a/src/myx/math/almost_equal_relative_and_abs-inl.hpp b/src/myx/math/almost_equal_relative_and_abs-inl.hpp
index 79981f4..a3eb720 100644
--- a/src/myx/math/almost_equal_relative_and_abs-inl.hpp
+++ b/src/myx/math/almost_equal_relative_and_abs-inl.hpp
@@ -1,3 +1,8 @@
+#ifndef MYX_MATH_ALMOST_EQUAL_RELATIVE_AND_ABS_INL_HPP_
+#define MYX_MATH_ALMOST_EQUAL_RELATIVE_AND_ABS_INL_HPP_
+
+#pragma once
+
 #ifndef MYXLIB_HEADER_ONLY
 #include <myx/math/almost_equal_relative_and_abs.hpp>
 #endif
@@ -8,7 +13,7 @@ namespace myx {
 
 namespace math {
 
-bool almost_equal_relative_and_abs( const float a, const float b,
+MYXLIB_INLINE bool almost_equal_relative_and_abs( const float a, const float b,
                                     const float maxAbsDiff, const float maxRelDiff )
 {
 	// Check if the numbers are really close -- needed
@@ -31,7 +36,7 @@ bool almost_equal_relative_and_abs( const float a, const float b,
 }
 
 
-bool almost_equal_relative_and_abs( const double a, const double b,
+MYXLIB_INLINE bool almost_equal_relative_and_abs( const double a, const double b,
                                     const double maxAbsDiff, const double maxRelDiff )
 {
 	// Check if the numbers are really close -- needed
@@ -56,3 +61,5 @@ bool almost_equal_relative_and_abs( const double a, const double b,
 } // namespace math
 
 } // namespace myx
+
+#endif
diff --git a/src/myx/math/almost_equal_relative_and_abs.cpp b/src/myx/math/almost_equal_relative_and_abs.cpp
index 531587a..50e03dd 100644
--- a/src/myx/math/almost_equal_relative_and_abs.cpp
+++ b/src/myx/math/almost_equal_relative_and_abs.cpp
@@ -1 +1,5 @@
+#ifndef MYXLIB_BUILD_LIBRARIES
+#error Define MYXLIB_BUILD_LIBRARIES to compile this file.
+#endif
+
 #include <myx/math/almost_equal_relative_and_abs-inl.hpp>
diff --git a/src/myx/math/almost_equal_relative_and_abs.hpp b/src/myx/math/almost_equal_relative_and_abs.hpp
index 078a7cd..bd6c9e5 100644
--- a/src/myx/math/almost_equal_relative_and_abs.hpp
+++ b/src/myx/math/almost_equal_relative_and_abs.hpp
@@ -1,6 +1,8 @@
 #ifndef MYX_MATH_ALMOST_EQUAL_RELATIVE_AND_ABS_HPP_
 #define MYX_MATH_ALMOST_EQUAL_RELATIVE_AND_ABS_HPP_
 
+#pragma once
+
 #include <myx/base/config.hpp>
 
 #include <cfloat>
diff --git a/src/myx/math/almost_equal_ulps-inl.hpp b/src/myx/math/almost_equal_ulps-inl.hpp
index 702ed8f..540d8bb 100644
--- a/src/myx/math/almost_equal_ulps-inl.hpp
+++ b/src/myx/math/almost_equal_ulps-inl.hpp
@@ -1,3 +1,8 @@
+#ifndef MYX_MATH_ALMOST_EQUAL_ULPS_INL_HPP_
+#define MYX_MATH_ALMOST_EQUAL_ULPS_INL_HPP_
+
+#pragma once
+
 #ifndef MYXLIB_HEADER_ONLY
 #include <myx/math/almost_equal_ulps.hpp>
 #endif
@@ -10,7 +15,7 @@ namespace myx {
 
 namespace math {
 
-bool almost_equal_ulps( const float a, const float b,
+MYXLIB_INLINE bool almost_equal_ulps( const float a, const float b,
                         const int maxUlpsDiff )
 {
 	FloatCmp uA( a );
@@ -46,7 +51,7 @@ bool almost_equal_ulps( const float a, const float b,
 } // almost_equal_ulps
 
 
-bool almost_equal_ulps( const double a, const double b,
+MYXLIB_INLINE bool almost_equal_ulps( const double a, const double b,
                         const int maxUlpsDiff )
 {
 	DoubleCmp uA( a );
@@ -84,3 +89,5 @@ bool almost_equal_ulps( const double a, const double b,
 } // namespace math
 
 } // namespace myx
+
+#endif
diff --git a/src/myx/math/almost_equal_ulps.cpp b/src/myx/math/almost_equal_ulps.cpp
index 772dffd..0b0aab4 100644
--- a/src/myx/math/almost_equal_ulps.cpp
+++ b/src/myx/math/almost_equal_ulps.cpp
@@ -1 +1,5 @@
+#ifndef MYXLIB_BUILD_LIBRARIES
+#error Define MYXLIB_BUILD_LIBRARIES to compile this file.
+#endif
+
 #include <myx/math/almost_equal_ulps-inl.hpp>
diff --git a/src/myx/math/almost_equal_ulps.hpp b/src/myx/math/almost_equal_ulps.hpp
index 5d4cc75..d01389b 100644
--- a/src/myx/math/almost_equal_ulps.hpp
+++ b/src/myx/math/almost_equal_ulps.hpp
@@ -1,6 +1,8 @@
 #ifndef MYX_MATH_ALMOST_EQUAL_ULPS_HPP_
 #define MYX_MATH_ALMOST_EQUAL_ULPS_HPP_
 
+#pragma once
+
 #include <myx/base/config.hpp>
 #include <myx/math/float_cmp_types.hpp>
 
diff --git a/src/myx/math/almost_equal_ulps_and_abs-inl.hpp b/src/myx/math/almost_equal_ulps_and_abs-inl.hpp
index bca19ec..a8b59a2 100644
--- a/src/myx/math/almost_equal_ulps_and_abs-inl.hpp
+++ b/src/myx/math/almost_equal_ulps_and_abs-inl.hpp
@@ -1,3 +1,8 @@
+#ifndef MYX_MATH_ALMOST_EQUAL_ULPS_INL_HPP_
+#define MYX_MATH_ALMOST_EQUAL_ULPS_INL_HPP_
+
+#pragma once
+
 #ifndef MYXLIB_HEADER_ONLY
 #include <myx/math/almost_equal_ulps_and_abs.hpp>
 #endif
@@ -10,7 +15,7 @@ namespace myx {
 
 namespace math {
 
-bool almost_equal_ulps_and_abs( const float a, const float b,
+MYXLIB_INLINE bool almost_equal_ulps_and_abs( const float a, const float b,
                                 const float maxAbsDiff, const int maxUlpsDiff )
 {
 	// Check if the numbers are really close -- needed
@@ -43,7 +48,7 @@ bool almost_equal_ulps_and_abs( const float a, const float b,
 } // almost_equal_ulps_and_abs
 
 
-bool almost_equal_ulps_and_abs( const double a, const double b,
+MYXLIB_INLINE bool almost_equal_ulps_and_abs( const double a, const double b,
                                 const double maxAbsDiff, const int maxUlpsDiff )
 {
 	// Check if the numbers are really close -- needed
@@ -78,3 +83,5 @@ bool almost_equal_ulps_and_abs( const double a, const double b,
 } // namespace math
 
 } // namespace myx
+
+#endif
diff --git a/src/myx/math/almost_equal_ulps_and_abs.cpp b/src/myx/math/almost_equal_ulps_and_abs.cpp
index a4cfadb..7b0b09d 100644
--- a/src/myx/math/almost_equal_ulps_and_abs.cpp
+++ b/src/myx/math/almost_equal_ulps_and_abs.cpp
@@ -1 +1,5 @@
+#ifndef MYXLIB_BUILD_LIBRARIES
+#error Define MYXLIB_BUILD_LIBRARIES to compile this file.
+#endif
+
 #include <myx/math/almost_equal_ulps_and_abs-inl.hpp>
diff --git a/src/myx/math/almost_equal_ulps_and_abs.hpp b/src/myx/math/almost_equal_ulps_and_abs.hpp
index f141795..330090e 100644
--- a/src/myx/math/almost_equal_ulps_and_abs.hpp
+++ b/src/myx/math/almost_equal_ulps_and_abs.hpp
@@ -1,6 +1,8 @@
 #ifndef MYX_MATH_ALMOST_EQUAL_ULPS_HPP_
 #define MYX_MATH_ALMOST_EQUAL_ULPS_HPP_
 
+#pragma once
+
 #include <myx/base/config.hpp>
 
 namespace myx {
diff --git a/src/myx/math/constants-inl.hpp b/src/myx/math/constants-inl.hpp
index eb22bee..39b5ced 100644
--- a/src/myx/math/constants-inl.hpp
+++ b/src/myx/math/constants-inl.hpp
@@ -1,3 +1,8 @@
+#ifndef MYX_MATH_CONSTANTS_INL_HPP_
+#define MYX_MATH_CONSTANTS_INL_HPP_
+
+#pragma once
+
 #ifndef MYXLIB_HEADER_ONLY
 #include <myx/math/constants.hpp>
 #endif
@@ -9,3 +14,5 @@ namespace math {
 } // namespace math
 
 } // namespace myx
+
+#endif
diff --git a/src/myx/math/constants.cpp b/src/myx/math/constants.cpp
index 5351b8f..7746367 100644
--- a/src/myx/math/constants.cpp
+++ b/src/myx/math/constants.cpp
@@ -1 +1,5 @@
+#ifndef MYXLIB_BUILD_LIBRARIES
+#error Define MYXLIB_BUILD_LIBRARIES to compile this file.
+#endif
+
 #include <myx/math/constants-inl.hpp>
diff --git a/src/myx/math/constants.hpp b/src/myx/math/constants.hpp
index 05f16e8..7db7521 100644
--- a/src/myx/math/constants.hpp
+++ b/src/myx/math/constants.hpp
@@ -1,6 +1,8 @@
 #ifndef MYX_MATH_CONSTANTS_HPP_
 #define MYX_MATH_CONSTANTS_HPP_
 
+#pragma once
+
 #include <myx/base/config.hpp>
 
 #include <cmath>
diff --git a/src/myx/math/float_cmp_types.hpp b/src/myx/math/float_cmp_types.hpp
index b24d9ea..0acc1aa 100644
--- a/src/myx/math/float_cmp_types.hpp
+++ b/src/myx/math/float_cmp_types.hpp
@@ -1,6 +1,8 @@
 #ifndef MYX_MATH_FLOAT_CMP_TYPES_HPP_
 #define MYX_MATH_FLOAT_CMP_TYPES_HPP_
 
+#pragma once
+
 #include <cstdint>
 
 /**
diff --git a/src/myx/math/functions.hpp b/src/myx/math/functions.hpp
index 3e64da7..4e231b9 100644
--- a/src/myx/math/functions.hpp
+++ b/src/myx/math/functions.hpp
@@ -1,6 +1,8 @@
 #ifndef MYX_MATH_FUNCTIONS_HPP_
 #define MYX_MATH_FUNCTIONS_HPP_
 
+#pragma once
+
 #include <boost/math/special_functions/pow.hpp>
 #include <cmath>
 #include <type_traits>
diff --git a/src/myx/math/radar.hpp b/src/myx/math/radar.hpp
index e3744f9..8d800b5 100644
--- a/src/myx/math/radar.hpp
+++ b/src/myx/math/radar.hpp
@@ -1,6 +1,8 @@
 #ifndef MYX_MATH_RADAR_HPP_
 #define MYX_MATH_RADAR_HPP_
 
+#pragma once
+
 #include <cmath>
 #include <type_traits>
 
diff --git a/src/myx/math/units.hpp b/src/myx/math/units.hpp
index 4bf6c7e..5a21e46 100644
--- a/src/myx/math/units.hpp
+++ b/src/myx/math/units.hpp
@@ -1,6 +1,8 @@
 #ifndef MYX_MATH_UNITS_HPP_
 #define MYX_MATH_UNITS_HPP_
 
+#pragma once
+
 #include <cmath>
 #include <type_traits>
 
@@ -88,5 +90,4 @@ T magnitude_to_decibel( T const& magnitude )
 
 } // namespace myx
 
-
 #endif // MYX_MATH_UNITS_HPP_
diff --git a/src/myx/qt/backports.hpp b/src/myx/qt/backports.hpp
index a45b10f..0ce776d 100644
--- a/src/myx/qt/backports.hpp
+++ b/src/myx/qt/backports.hpp
@@ -1,6 +1,8 @@
 #ifndef MYX_QT_BACKPORTS_HPP_
 #define MYX_QT_BACKPORTS_HPP_
 
+#pragma once
+
 #if ( defined ( TARGET_LSB_ID_AstraLinuxSE ) && defined ( TARGET_LSB_CODENAME_smolensk ) )
 
 #define override
diff --git a/src/myx/qt/translators-inl.hpp b/src/myx/qt/translators-inl.hpp
index 20b2936..9367945 100644
--- a/src/myx/qt/translators-inl.hpp
+++ b/src/myx/qt/translators-inl.hpp
@@ -17,7 +17,7 @@ namespace myx {
 
 namespace qt {
 
-void append_translators( QTranslatorsList& translators, const QString& appName )
+MYXLIB_INLINE void append_translators( QTranslatorsList& translators, const QString& appName )
 {
 	auto* translator = new QTranslator( qApp );
 
diff --git a/src/myx/qt/translators.cpp b/src/myx/qt/translators.cpp
index ce9c111..496aac7 100644
--- a/src/myx/qt/translators.cpp
+++ b/src/myx/qt/translators.cpp
@@ -1,2 +1,5 @@
+#ifndef MYXLIB_BUILD_LIBRARIES
+#error Define MYXLIB_BUILD_LIBRARIES to compile this file.
+#endif
+
 #include <myx/qt/translators.hpp>
-#include <myx/qt/translators-inl.hpp>
diff --git a/src/myx/qt/translators.hpp b/src/myx/qt/translators.hpp
index 1529c4c..1131c34 100644
--- a/src/myx/qt/translators.hpp
+++ b/src/myx/qt/translators.hpp
@@ -1,5 +1,7 @@
-#ifndef MYX_LOG_QT_TRANSLATORS_HPP_
-#define MYX_LOG_QT_TRANSLATORS_HPP_
+#ifndef MYX_QT_TRANSLATORS_HPP_
+#define MYX_QT_TRANSLATORS_HPP_
+
+#pragma once
 
 #include <myx/base/config.hpp>
 #include <myx/qt/backports.hpp>
@@ -22,4 +24,4 @@ void append_translators( QTranslatorsList& translators, const QString& appName )
 #include "translators-inl.hpp"
 #endif
 
-#endif // ifndef MYX_LOG_QT_TRANSLATORS_HPP_
+#endif // ifndef MYX_QT_TRANSLATORS_HPP_