configure: error: off_t undefined; check your library configuration

本文解决了在CentOS7上通过源码安装PHP7时遇到的configure错误问题。通过向配置文件添加特定路径并更新配置,成功克服了该错误。

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错误描述

CentOS7 源码安装PHP7 执行 ./configure...命令后抛出错误:configure: error: off_t undefined; check your library configuration

解决办法

  • 添加搜索路径到配置文件
echo '/usr/local/lib64
/usr/local/lib
/usr/lib
/usr/lib64'>>/etc/ld.so.conf
  • 更新配置
ldconfig -v
#include <Wire.h> #include "MAX30105.h" // 使用MAX3010x_Sensor_Library库 MAX30105 particleSensor; #define BUFFER_SIZE 75 #define NEW_SAMPLES 25 void setup() { Serial.begin(115200); delay(1000); Serial.println("Initializing MAX30102 sensor..."); // 初始化传感器 if (!particleSensor.begin(Wire, I2C_SPEED_FAST)) { Serial.println("MAX30102 not found. Please check wiring/power."); while (1); } Serial.println("Sensor initialized successfully."); byte ledBrightness = 60; byte sampleAverage = 4; byte ledMode = 2; int sampleRate = 100; int pulseWidth = 411; int adcRange = 4096; // 配置传感器 particleSensor.setup(ledBrightness, sampleAverage, ledMode, sampleRate, pulseWidth, adcRange); // 启用温度传感器 particleSensor.enableDIETEMPRDY(); // 软复位 particleSensor.softReset(); delay(100); Serial.println("Configuration complete. Starting readings..."); } void loop() { uint32_t irBuffer[BUFFER_SIZE]; uint32_t redBuffer[BUFFER_SIZE]; // 初始填充缓冲区 for (byte i = 0; i < BUFFER_SIZE; i++) { while (!particleSensor.safeCheck()) { // 使用safeCheck()代替available()和check() delay(1); } redBuffer[i] = particleSensor.getFIFORed(); irBuffer[i] = particleSensor.getFIFOIR(); particleSensor.nextSample(); } processSamples(irBuffer, redBuffer, BUFFER_SIZE); while (true) { // 滑动窗口 for (byte i = 0; i < BUFFER_SIZE - NEW_SAMPLES; i++) { redBuffer[i] = redBuffer[i + NEW_SAMPLES]; irBuffer[i] = irBuffer[i + NEW_SAMPLES]; } // 读取新样本 for (byte i = BUFFER_SIZE - NEW_SAMPLES; i < BUFFER_SIZE; i++) { while (!particleSensor.safeCheck()) { delay(1); } redBuffer[i] = particleSensor.getFIFORed(); irBuffer[i] = particleSensor.getFIFOIR(); particleSensor.nextSample(); delay(2); } processSamples(irBuffer, redBuffer, BUFFER_SIZE); delay(50); } } void processSamples(uint32_t* irBuffer, uint32_t* redBuffer, int bufferLength) { int32_t spo2; int8_t validSPO2; int32_t heartRate; int8_t validHeartRate; maxim_heart_rate_and_oxygen_saturation( irBuffer, bufferLength, redBuffer, &spo2, &validSPO2, &heartRate, &validHeartRate ); Serial.print("HeartRate: "); Serial.print(heartRate); Serial.print("bpm | Valid: "); Serial.print(validHeartRate); Serial.print(" | SpO2: "); Serial.print(spo2); Serial.print("% | Valid: "); Serial.println(validSPO2); } D:\徐景川作业相关\传感器实验\智能传感与检测技术 实习\sketch_jul10a_copy_20250714175331\sketch_jul10a_copy_20250714175331.ino: In function 'void setup()': D:\徐景川作业相关\传感器实验\智能传感与检测技术 实习\sketch_jul10a_copy_20250714175331\sketch_jul10a_copy_20250714175331.ino:15:35: error: 'I2C_SPEED_FAST' was not declared in this scope D:\徐景川作业相关\传感器实验\智能传感与检测技术 实习\sketch_jul10a_copy_20250714175331\sketch_jul10a_copy_20250714175331.ino:29:18: error: 'class MAX30105' has no member named 'setup'; did you mean 'setBit'? D:\徐景川作业相关\传感器实验\智能传感与检测技术 实习\sketch_jul10a_copy_20250714175331\sketch_jul10a_copy_20250714175331.ino:32:18: error: 'class MAX30105' has no member named 'enableDIETEMPRDY' D:\徐景川作业相关\传感器实验\智能传感与检测技术 实习\sketch_jul10a_copy_20250714175331\sketch_jul10a_copy_20250714175331.ino:35:18: error: 'class MAX30105' has no member named 'softReset' D:\徐景川作业相关\传感器实验\智能传感与检测技术 实习\sketch_jul10a_copy_20250714175331\sketch_jul10a_copy_20250714175331.ino: In function 'void loop()': D:\徐景川作业相关\传感器实验\智能传感与检测技术 实习\sketch_jul10a_copy_20250714175331\sketch_jul10a_copy_20250714175331.ino:47:28: error: 'class MAX30105' has no member named 'safeCheck' D:\徐景川作业相关\传感器实验\智能传感与检测技术 实习\sketch_jul10a_copy_20250714175331\sketch_jul10a_copy_20250714175331.ino:50:35: error: 'class MAX30105' has no member named 'getFIFORed' D:\徐景川作业相关\传感器实验\智能传感与检测技术 实习\sketch_jul10a_copy_20250714175331\sketch_jul10a_copy_20250714175331.ino:51:34: error: 'class MAX30105' has no member named 'getFIFOIR' D:\徐景川作业相关\传感器实验\智能传感与检测技术 实习\sketch_jul10a_copy_20250714175331\sketch_jul10a_copy_20250714175331.ino:52:20: error: 'class MAX30105' has no member named 'nextSample'; did you mean 'readSample'? D:\徐景川作业相关\传感器实验\智能传感与检测技术 实习\sketch_jul10a_copy_20250714175331\sketch_jul10a_copy_20250714175331.ino:66:30: error: 'class MAX30105' has no member named 'safeCheck' D:\徐景川作业相关\传感器实验\智能传感与检测技术 实习\sketch_jul10a_copy_20250714175331\sketch_jul10a_copy_20250714175331.ino:69:37: error: 'class MAX30105' has no member named 'getFIFORed' D:\徐景川作业相关\传感器实验\智能传感与检测技术 实习\sketch_jul10a_copy_20250714175331\sketch_jul10a_copy_20250714175331.ino:70:36: error: 'class MAX30105' has no member named 'getFIFOIR' D:\徐景川作业相关\传感器实验\智能传感与检测技术 实习\sketch_jul10a_copy_20250714175331\sketch_jul10a_copy_20250714175331.ino:71:22: error: 'class MAX30105' has no member named 'nextSample'; did you mean 'readSample'? D:\徐景川作业相关\传感器实验\智能传感与检测技术 实习\sketch_jul10a_copy_20250714175331\sketch_jul10a_copy_20250714175331.ino: In function 'void processSamples(uint32_t*, uint32_t*, int)': D:\徐景川作业相关\传感器实验\智能传感与检测技术 实习\sketch_jul10a_copy_20250714175331\sketch_jul10a_copy_20250714175331.ino:86:3: error: 'maxim_heart_rate_and_oxygen_saturation' was not declared in this scope exit status 1 Compilation error: 'I2C_SPEED_FAST' was not declared in this scope
07-18
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