Wrap entire utility classed by __has_include.

This is very complicated. Because of this class library is a collection,
entire library will be build even  some are not used. In the cae certain
hardwaer/xxx library in the Pico SDK, depending class in this collection
will be fail to compile.

So, we need to wrap the utility classes by __has_include to avoid this
problem.

Author: suikan4github

src/codec/adau1361.cpp

@@ -4,6 +4,7 @@
  *  Created on: 2018/05/11
  *      Author: Seiichi "Suikan" Horie
  */
+#if __has_include(<hardware/i2c.h>) || __has_include(<gmock/gmock.h>)
 
 // GCC/Clang : Promote the switch-enum warning to error.
 // MSVC : ignored.
@@ -134,3 +135,5 @@ void ::rpp_driver::Adau1361::Mute(CodecChannel channel, bool mute) {
   }
   CODEC_SYSLOG("Leave.")
 }
+
+#endif  // __has_include(<hardware/i2c.h>) || __has_include(<gmock/gmock.h>)

src/codec/adau1361.hpp

@@ -9,6 +9,7 @@
 
 #ifndef PICO_DRIVER_SRC_CODEC_ADAU1361_HPP_
 #define PICO_DRIVER_SRC_CODEC_ADAU1361_HPP_
+#if __has_include(<hardware/i2c.h>) || __has_include(<gmock/gmock.h>)
 
 #include <i2c/i2cmaster.hpp>
 
@@ -217,4 +218,6 @@ class MockAdau1361 : public Adau1361 {
 
 }  // namespace rpp_driver
 
+#endif  // __has_include(<hardware/i2c.h>) || __has_include(<gmock/gmock.h>)
+
 #endif /* PICO_DRIVER_SRC_CODEC_ADAU1361_HPP_ */

src/codec/adau1361lower.cpp

@@ -1,3 +1,5 @@
+#if __has_include(<hardware/i2c.h>) || __has_include(<gmock/gmock.h>)
+
 #include "adau1361lower.hpp"
 
 #include <assert.h>
@@ -765,3 +767,5 @@ void ::rpp_driver::Adau1361Lower::SetHpOutputGain(float left_gain,
   // SET RHPVOL : R30
   SendCommand(txbuf, 3);
 }
+
+#endif  // __has_include(<hardware/i2c.h>) || __has_include(<gmock/gmock.h>)

src/codec/adau1361lower.hpp

@@ -9,6 +9,7 @@
 
 #ifndef PICO_DRIVER_SRC_CODEC_ADAU1361LOWER_HPP_
 #define PICO_DRIVER_SRC_CODEC_ADAU1361LOWER_HPP_
+#if __has_include(<hardware/i2c.h>) || __has_include(<gmock/gmock.h>)
 
 #include "i2c/i2cmaster.hpp"
 
@@ -260,4 +261,6 @@ class MockAdau1361Lower : public Adau1361Lower {
 // GCOVR_EXCL_STOP
 }  // namespace rpp_driver
 
+#endif  // __has_include(<hardware/i2c.h>) || __has_include(<gmock/gmock.h>)
+
 #endif /* PICO_DRIVER_SRC_CODEC_ADAU1361LOWER_HPP_ */

src/codec/umbadau1361lower.cpp

@@ -1,3 +1,5 @@
+#if __has_include(<hardware/i2c.h>) || __has_include(<gmock/gmock.h>)
+
 #include "umbadau1361lower.hpp"
 
 #include <assert.h>
@@ -34,3 +36,5 @@ void ::rpp_driver::UmbAdau1361Lower::ConfigureSignalPath() {
       config_UMB_ADAU1361A,
       sizeof(config_UMB_ADAU1361A) / 3);  // init UMB-ADAU1361 as default state.
 }
+
+#endif  // __has_include(<hardware/i2c.h>) || __has_include(<gmock/gmock.h>)

src/codec/umbadau1361lower.hpp

@@ -9,6 +9,7 @@
 
 #ifndef PICO_DRIVER_SRC_CODEC_UMBADAU1361LOWER_HPP_
 #define PICO_DRIVER_SRC_CODEC_UMBADAU1361LOWER_HPP_
+#if __has_include(<hardware/i2c.h>) || __has_include(<gmock/gmock.h>)
 
 #include "codec/adau1361lower.hpp"
 #include "i2c/i2cmaster.hpp"
@@ -49,5 +50,6 @@ class UmbAdau1361Lower : public Adau1361Lower {
 };
 
 }  // namespace rpp_driver
+#endif  //  __has_include(<hardware/i2c.h>) || __has_include(<gmock/gmock.h>)
 
 #endif /* PICO_DRIVER_SRC_CODEC_UMBADAU1361LOWER_HPP_ */

src/i2c/i2cmaster.cpp

@@ -1,3 +1,5 @@
+#if __has_include(<hardware/i2c.h>) || __has_include(<gmock/gmock.h>)
+
 #include "i2cmaster.hpp"
 
 ::rpp_driver::I2cMaster::I2cMaster(SdkWrapper& sdk, i2c_inst_t& i2c,
@@ -31,3 +33,4 @@ bool rpp_driver::I2cMaster::IsDeviceExisting(uint8_t addr) {
   return (PICO_ERROR_GENERIC !=
           ReadBlocking(addr, dummy_buf, sizeof(dummy_buf), false));
 }
+#endif  // __has_include(<hardware/i2c.h>) || __has_include(<gmock/gmock.h>)

src/i2c/i2cmaster.hpp

@@ -10,6 +10,7 @@
 
 #ifndef PICO_DRIVER_SRC_I2C_I2CMASATER_HPP_
 #define PICO_DRIVER_SRC_I2C_I2CMASATER_HPP_
+#if __has_include(<hardware/i2c.h>) || __has_include(<gmock/gmock.h>)
 
 #include <stdint.h>
 
@@ -161,5 +162,6 @@ class MockI2cMaster : public I2cMaster {
 #endif  // __has_include(<gmock/gmock.h>)
 
 };  // namespace rpp_driver
+#endif  // __has_include(<hardware/i2c.h>) || __has_include(<gmock/gmock.h>)
 
 #endif /* PICO_DRIVER_SRC_I2C_I2CMASATER_HPP_ */

src/i2s/i2sslaveduplex.cpp

@@ -1,3 +1,5 @@
+#if __has_include(<hardware/pio.h>) || __has_include(<gmock/gmock.h>)
+
 #include "i2s/i2sslaveduplex.hpp"
 
 #include "sdk/sdkwrapper.hpp"
@@ -130,3 +132,5 @@ void rpp_driver::I2sSlaveDuplex::Stop() {
   // We don't unclaim the state machine.
   // The SM will be unclaimed by destructor.
 }
+
+#endif  // __has_include(<hardware/pio.h>) || __has_include(<gmock/gmock.h>)

src/i2s/i2sslaveduplex.hpp

@@ -5,6 +5,7 @@
  */
 #ifndef PICO_DRIVER_SRC_I2S_DUPLEXSLAVEI2S_HPP_
 #define PICO_DRIVER_SRC_I2S_DUPLEXSLAVEI2S_HPP_
+#if __has_include(<hardware/pio.h>) || __has_include(<gmock/gmock.h>)
 
 #if __has_include(<hardware/pio.h>)
 #include "hardware/pio.h"
@@ -194,4 +195,6 @@ class MockI2sSlaveDuplex : public I2sSlaveDuplex {
 #endif  // __has_include(<gmock/gmock.h>)
 }  // namespace rpp_driver
 
+#endif // __has_include(<hardware/pio.h>) || __has_include(<gmock/gmock.h>)
+
 #endif  // PICO_DRIVER_SRC_I2S_DUPLEXSLAVEI2S_HPP_