$ makepkg -i
==> Making package: giada 0.5.3-3 (Sat Nov  3 16:19:37 CET 2012)
==> Checking runtime dependencies...
==> Checking buildtime dependencies...
==> Retrieving Sources...
  -> Found giada_0.5.3_src.tar.gz
  -> Found giada.png
  -> Found giada.desktop
==> Validating source files with md5sums...
    giada_0.5.3_src.tar.gz ... Passed
    giada.png ... Passed
    giada.desktop ... Passed
==> Extracting Sources...
  -> Extracting giada_0.5.3_src.tar.gz with bsdtar
==> Removing existing pkg/ directory...
==> Starting build()...
checking for a BSD-compatible install... /usr/bin/install -c
checking whether build environment is sane... yes
checking for a thread-safe mkdir -p... /usr/bin/mkdir -p
checking for gawk... gawk
checking whether make sets $(MAKE)... yes
checking for g++... g++
checking whether the C++ compiler works... yes
checking for C++ compiler default output file name... a.out
checking for suffix of executables... 
checking whether we are cross compiling... no
checking for suffix of object files... o
checking whether we are using the GNU C++ compiler... yes
checking whether g++ accepts -g... yes
checking for style of include used by make... GNU
checking dependency style of g++... gcc3
checking for gcc... gcc
checking whether we are using the GNU C compiler... yes
checking whether gcc accepts -g... yes
checking for gcc option to accept ISO C89... none needed
checking dependency style of gcc... gcc3
checking whether make sets $(MAKE)... (cached) yes
checking for pthread_exit in -lpthread... yes
checking how to run the C++ preprocessor... g++ -E
checking for grep that handles long lines and -e... /usr/bin/grep
checking for egrep... /usr/bin/grep -E
checking for ANSI C header files... yes
checking for sys/types.h... yes
checking for sys/stat.h... yes
checking for stdlib.h... yes
checking for string.h... yes
checking for memory.h... yes
checking for strings.h... yes
checking for inttypes.h... yes
checking for stdint.h... yes
checking for unistd.h... yes
checking FL/Fl.H usability... yes
checking FL/Fl.H presence... yes
checking for FL/Fl.H... yes
checking RtAudio.h usability... yes
checking RtAudio.h presence... no
configure: WARNING: RtAudio.h: accepted by the compiler, rejected by the preprocessor!
configure: WARNING: RtAudio.h: proceeding with the compiler's result
checking for RtAudio.h... yes
checking sndfile.h usability... yes
checking sndfile.h presence... yes
checking for sndfile.h... yes
configure: creating ./config.status
config.status: creating Makefile
config.status: creating src/Makefile
config.status: executing depfiles commands
Making all in src
make[1]: Entering directory `/home/renato/src/giada/src/src'
g++ -DPACKAGE_NAME=\"giada\" -DPACKAGE_TARNAME=\"giada\" -DPACKAGE_VERSION=\"0.4\" -DPACKAGE_STRING=\"giada\ 0.4\" -DPACKAGE_BUGREPORT=\"development@monocasual.com\" -DPACKAGE_URL=\"\" -DPACKAGE=\"giada\" -DVERSION=\"0.4\" -DHAVE_LIBPTHREAD=1 -DSTDC_HEADERS=1 -DHAVE_SYS_TYPES_H=1 -DHAVE_SYS_STAT_H=1 -DHAVE_STDLIB_H=1 -DHAVE_STRING_H=1 -DHAVE_MEMORY_H=1 -DHAVE_STRINGS_H=1 -DHAVE_INTTYPES_H=1 -DHAVE_STDINT_H=1 -DHAVE_UNISTD_H=1 -I.    -Wall -pedantic -Werror -march=x86-64 -mtune=generic -O2 -pipe -fstack-protector --param=ssp-buffer-size=4 -D_FORTIFY_SOURCE=2 -I/usr/include/rtaudio -MT patch.o -MD -MP -MF .deps/patch.Tpo -c -o patch.o patch.cpp
patch.cpp:35:8: error: ‘PluginHost’ does not name a type
patch.cpp: In member function ‘int Patch::readPlugins()’:
patch.cpp:379:13: error: ‘G_PluginHost’ was not declared in this scope
patch.cpp:379:59: error: ‘PluginHost’ has not been declared
patch.cpp:382:4: error: ‘Plugin’ was not declared in this scope
patch.cpp:382:12: error: ‘pPlugin’ was not declared in this scope
patch.cpp:382:55: error: ‘PluginHost’ has not been declared
patch.cpp:403:14: error: ‘G_PluginHost’ was not declared in this scope
patch.cpp:403:60: error: ‘PluginHost’ has not been declared
patch.cpp:407:5: error: ‘Plugin’ was not declared in this scope
patch.cpp:407:13: error: ‘pPlugin’ was not declared in this scope
patch.cpp:407:56: error: ‘PluginHost’ has not been declared
patch.cpp: In member function ‘int Patch::write(const char*, const char*)’:
patch.cpp:476:2: error: ‘Plugin’ was not declared in this scope
patch.cpp:476:11: error: ‘pPlugin’ was not declared in this scope
patch.cpp:480:13: error: ‘G_PluginHost’ was not declared in this scope
patch.cpp:480:39: error: ‘PluginHost’ has not been declared
patch.cpp:484:46: error: ‘PluginHost’ has not been declared
patch.cpp:497:40: error: ‘PluginHost’ has not been declared
patch.cpp:501:47: error: ‘PluginHost’ has not been declared
make[1]: *** [patch.o] Error 1
make[1]: Leaving directory `/home/renato/src/giada/src/src'
make: *** [all-recursive] Error 1
==> ERROR: A failure occurred in build().
    Aborting...