Subject: [PATCH] Fix building against the system portaudio library Building against the system portaudio results in this error: ./src/AudioIO.cpp:983: undefined reference to `PaUtil_GetTime' audacity-AudioIO.o: In function `audacityAudioCallback(void const*, void*, unsigned long, PaStreamCallbackTimeInfo const*, unsigned long, void*)': ./src/AudioIO.cpp:4630: undefined reference to `PaUtil_GetTime' collect2: error: ld returned 1 exit status Makefile:2349: recipe for target 'audacity' failed make[3]: *** [audacity] Error 1 This is because PaUtil_GetTime is declared as a C symbol in pa_util.h but is resolved as a C++ symbol at link time. Audacity fixes this in the local tree with this change: https://github.com/audacity/audacity/commit/38fd97b8e26060332ab3e9e000a8882326a70ba7 However this is not general enough for the portaudio debian package. Since PaUtil_GetTime() is the only function causing problems, just copy over the code where it's used. --- src/AudioIO.cpp | 17 ++++++++++++++++- 1 file changed, 16 insertions(+), 1 deletion(-) --- audacity-minsrc-2.3.3/src/AudioIO.cpp.orig 2019-11-25 18:57:25.820000000 +0100 +++ audacity-minsrc-2.3.3/src/AudioIO.cpp 2019-11-25 18:59:07.160000000 +0100 @@ -480,8 +480,23 @@ #define ROUND(x) (int) ((x)+0.5) //#include <string.h> // #include "../lib-src/portmidi/pm_common/portmidi.h" - #include "../lib-src/portaudio-v19/src/common/pa_util.h" #include "NoteTrack.h" + #include <sys/time.h> + PaTime PaUtil_GetTime( void ) + { + #ifdef HAVE_MACH_ABSOLUTE_TIME + return mach_absolute_time() * machSecondsConversionScaler_; + #elif defined(HAVE_CLOCK_GETTIME) + struct timespec tp; + clock_gettime(CLOCK_REALTIME, &tp); + return (PaTime)(tp.tv_sec + tp.tv_nsec * 1e-9); + #else + struct timeval tv; + gettimeofday( &tv, NULL ); + return (PaTime) tv.tv_usec * 1e-6 + tv.tv_sec; + #endif + } + #endif #ifdef EXPERIMENTAL_AUTOMATED_INPUT_LEVEL_ADJUSTMENT