make[4]: Entering directory '/build/lede-17.01/slaves/phase2/arc_archs/build/sdk/build_dir/target-arc_archs_uClibc-1.0.14/espeak-1.48.04-source/src'
ccache_cxx -Os -pipe -matomic -marchs -fno-caller-saves -fhonour-copts -Wno-error=unused-but-set-variable -Wno-error=unused-result  -Wformat -Werror=format-security -D_FORTIFY_SOURCE=1 -Wl,-z,now -Wl,-z,relro -DUSE_PORTAUDIO -D PATH_ESPEAK_DATA=\"/usr/share/espeak\" -Wall -pedantic -I. -c -fno-exceptions  wavegen.cpp
wavegen.cpp:43:23: fatal error: portaudio.h: No such file or directory
 #include <portaudio.h>
                       ^
compilation terminated.
Makefile:102: recipe for target 'wavegen.o' failed
make[4]: *** [wavegen.o] Error 1
make[4]: Leaving directory '/build/lede-17.01/slaves/phase2/arc_archs/build/sdk/build_dir/target-arc_archs_uClibc-1.0.14/espeak-1.48.04-source/src'
Makefile:57: recipe for target '/build/lede-17.01/slaves/phase2/arc_archs/build/sdk/build_dir/target-arc_archs_uClibc-1.0.14/espeak-1.48.04-source/.built' failed
make[3]: *** [/build/lede-17.01/slaves/phase2/arc_archs/build/sdk/build_dir/target-arc_archs_uClibc-1.0.14/espeak-1.48.04-source/.built] Error 2