:~/Downloads/ddccontrol-0.4.2$ make
Making all in src
make[1]: Entering directory '/home/amir/Downloads/ddccontrol-0.4.2/src'
make  all-recursive
make[2]: Entering directory '/home/amir/Downloads/ddccontrol-0.4.2/src'
Making all in lib
make[3]: Entering directory '/home/amir/Downloads/ddccontrol-0.4.2/src/lib'
if /bin/bash ../../libtool --tag=CC --mode=compile gcc -DHAVE_CONFIG_H -I. -I. -I../../src -I.. -DLOCALEDIR=\"/usr/local/share/locale\"   -I/usr/include/libxml2 -g -O2 -Wall  -DDATADIR="\"/usr/local/share/ddccontrol-db\"" -DBINDIR="\"/usr/local/bin\"" -MT ddcci.lo -MD -MP -MF ".deps/ddcci.Tpo" -c -o ddcci.lo ddcci.c; \
then mv -f ".deps/ddcci.Tpo" ".deps/ddcci.Plo"; else rm -f ".deps/ddcci.Tpo"; exit 1; fi
mkdir .libs
 gcc -DHAVE_CONFIG_H -I. -I. -I../../src -I.. -DLOCALEDIR=\"/usr/local/share/locale\" -I/usr/include/libxml2 -g -O2 -Wall -DDATADIR=\"/usr/local/share/ddccontrol-db\" -DBINDIR=\"/usr/local/bin\" -MT ddcci.lo -MD -MP -MF .deps/ddcci.Tpo -c ddcci.c  -fPIC -DPIC -o .libs/ddcci.o
ddcci.c: In function 'ddcpci_init':
ddcci.c:158:3: warning: ignoring return value of 'system', declared with attribute warn_unused_result [-Wunused-result]
   system(buffer);
   ^
 gcc -DHAVE_CONFIG_H -I. -I. -I../../src -I.. -DLOCALEDIR=\"/usr/local/share/locale\" -I/usr/include/libxml2 -g -O2 -Wall -DDATADIR=\"/usr/local/share/ddccontrol-db\" -DBINDIR=\"/usr/local/bin\" -MT ddcci.lo -MD -MP -MF .deps/ddcci.Tpo -c ddcci.c -o ddcci.o >/dev/null 2>&1
if /bin/bash ../../libtool --tag=CC --mode=compile gcc -DHAVE_CONFIG_H -I. -I. -I../../src -I.. -DLOCALEDIR=\"/usr/local/share/locale\"   -I/usr/include/libxml2 -g -O2 -Wall  -DDATADIR="\"/usr/local/share/ddccontrol-db\"" -DBINDIR="\"/usr/local/bin\"" -MT monitor_db.lo -MD -MP -MF ".deps/monitor_db.Tpo" -c -o monitor_db.lo monitor_db.c; \
then mv -f ".deps/monitor_db.Tpo" ".deps/monitor_db.Plo"; else rm -f ".deps/monitor_db.Tpo"; exit 1; fi
 gcc -DHAVE_CONFIG_H -I. -I. -I../../src -I.. -DLOCALEDIR=\"/usr/local/share/locale\" -I/usr/include/libxml2 -g -O2 -Wall -DDATADIR=\"/usr/local/share/ddccontrol-db\" -DBINDIR=\"/usr/local/bin\" -MT monitor_db.lo -MD -MP -MF .deps/monitor_db.Tpo -c monitor_db.c  -fPIC -DPIC -o .libs/monitor_db.o
 gcc -DHAVE_CONFIG_H -I. -I. -I../../src -I.. -DLOCALEDIR=\"/usr/local/share/locale\" -I/usr/include/libxml2 -g -O2 -Wall -DDATADIR=\"/usr/local/share/ddccontrol-db\" -DBINDIR=\"/usr/local/bin\" -MT monitor_db.lo -MD -MP -MF .deps/monitor_db.Tpo -c monitor_db.c -o monitor_db.o >/dev/null 2>&1
if /bin/bash ../../libtool --tag=CC --mode=compile gcc -DHAVE_CONFIG_H -I. -I. -I../../src -I.. -DLOCALEDIR=\"/usr/local/share/locale\"   -I/usr/include/libxml2 -g -O2 -Wall  -DDATADIR="\"/usr/local/share/ddccontrol-db\"" -DBINDIR="\"/usr/local/bin\"" -MT conf.lo -MD -MP -MF ".deps/conf.Tpo" -c -o conf.lo conf.c; \
then mv -f ".deps/conf.Tpo" ".deps/conf.Plo"; else rm -f ".deps/conf.Tpo"; exit 1; fi
 gcc -DHAVE_CONFIG_H -I. -I. -I../../src -I.. -DLOCALEDIR=\"/usr/local/share/locale\" -I/usr/include/libxml2 -g -O2 -Wall -DDATADIR=\"/usr/local/share/ddccontrol-db\" -DBINDIR=\"/usr/local/bin\" -MT conf.lo -MD -MP -MF .deps/conf.Tpo -c conf.c  -fPIC -DPIC -o .libs/conf.o
conf.c: In function 'ddcci_save_list':
conf.c:195:3: warning: format not a string literal and no format arguments [-Wformat-security]
   rc = xmlTextWriterWriteFormatAttribute(writer, BAD_CAST "filename", current->filename);
   ^
conf.c:201:3: warning: format not a string literal and no format arguments [-Wformat-security]
   rc = xmlTextWriterWriteFormatAttribute(writer, BAD_CAST "name", current->name);
   ^
 gcc -DHAVE_CONFIG_H -I. -I. -I../../src -I.. -DLOCALEDIR=\"/usr/local/share/locale\" -I/usr/include/libxml2 -g -O2 -Wall -DDATADIR=\"/usr/local/share/ddccontrol-db\" -DBINDIR=\"/usr/local/bin\" -MT conf.lo -MD -MP -MF .deps/conf.Tpo -c conf.c -o conf.o >/dev/null 2>&1
/bin/bash ../../libtool --tag=CC --mode=link gcc -I/usr/include/libxml2 -g -O2 -Wall  -DDATADIR="\"/usr/local/share/ddccontrol-db\"" -DBINDIR="\"/usr/local/bin\""   -o libddccontrol.la -rpath /usr/local/lib  ddcci.lo monitor_db.lo conf.lo -lxml2 -lpci
gcc -shared  .libs/ddcci.o .libs/monitor_db.o .libs/conf.o  -lxml2 -lpci  -Wl,-soname -Wl,libddccontrol.so.0 -o .libs/libddccontrol.so.0.0.0
(cd .libs && rm -f libddccontrol.so.0 && ln -s libddccontrol.so.0.0.0 libddccontrol.so.0)
(cd .libs && rm -f libddccontrol.so && ln -s libddccontrol.so.0.0.0 libddccontrol.so)
ar cru .libs/libddccontrol.a  ddcci.o monitor_db.o conf.o
ranlib .libs/libddccontrol.a
creating libddccontrol.la
(cd .libs && rm -f libddccontrol.la && ln -s ../libddccontrol.la libddccontrol.la)
make[3]: Leaving directory '/home/amir/Downloads/ddccontrol-0.4.2/src/lib'
Making all in ddccontrol
make[3]: Entering directory '/home/amir/Downloads/ddccontrol-0.4.2/src/ddccontrol'
if gcc -DHAVE_CONFIG_H -I. -I. -I../../src -I../lib -DLOCALEDIR=\"/usr/local/share/locale\"   -I/usr/include/libxml2 -g -O2 -Wall  -DDATADIR="\"/usr/local/share/ddccontrol-db\"" -DBINDIR="\"/usr/local/bin\"" -MT main.o -MD -MP -MF ".deps/main.Tpo" -c -o main.o main.c; \
then mv -f ".deps/main.Tpo" ".deps/main.Po"; else rm -f ".deps/main.Tpo"; exit 1; fi
/bin/bash ../../libtool --tag=CC --mode=link gcc -I/usr/include/libxml2 -g -O2 -Wall  -DDATADIR="\"/usr/local/share/ddccontrol-db\"" -DBINDIR="\"/usr/local/bin\""   -o ddccontrol -lxml2 main.o ../lib/libddccontrol.la -lpci
mkdir .libs
gcc -I/usr/include/libxml2 -g -O2 -Wall -DDATADIR=\"/usr/local/share/ddccontrol-db\" -DBINDIR=\"/usr/local/bin\" -o .libs/ddccontrol main.o  ../lib/.libs/libddccontrol.so -lxml2 -lpci
creating ddccontrol
make[3]: Leaving directory '/home/amir/Downloads/ddccontrol-0.4.2/src/ddccontrol'
Making all in gddccontrol
make[3]: Entering directory '/home/amir/Downloads/ddccontrol-0.4.2/src/gddccontrol'
if gcc -DHAVE_CONFIG_H -I. -I. -I../../src -I../lib -I.. -DLOCALEDIR=\"/usr/local/share/locale\"   -I/usr/include/libxml2 -pthread -I/usr/include/gtk-2.0 -I/usr/lib/x86_64-linux-gnu/gtk-2.0/include -I/usr/include/gio-unix-2.0/ -I/usr/include/cairo -I/usr/include/pango-1.0 -I/usr/include/atk-1.0 -I/usr/include/cairo -I/usr/include/pixman-1 -I/usr/include/libpng12 -I/usr/include/gdk-pixbuf-2.0 -I/usr/include/libpng12 -I/usr/include/pango-1.0 -I/usr/include/harfbuzz -I/usr/include/pango-1.0 -I/usr/include/freetype2 -I/usr/include/glib-2.0 -I/usr/lib/x86_64-linux-gnu/glib-2.0/include  -g -O2 -Wall  -DDATADIR="\"/usr/local/share/ddccontrol-db\"" -DBINDIR="\"/usr/local/bin\"" -MT main.o -MD -MP -MF ".deps/main.Tpo" -c -o main.o main.c; \
then mv -f ".deps/main.Tpo" ".deps/main.Po"; else rm -f ".deps/main.Tpo"; exit 1; fi
main.c: In function ‘window_changed’:
main.c:152:11: warning: variable ‘cy’ set but not used [-Wunused-but-set-variable]
   int cx, cy, i;
           ^
main.c:152:7: warning: variable ‘cx’ set but not used [-Wunused-but-set-variable]
   int cx, cy, i;
       ^
main.c: In function ‘main’:
main.c:403:2: warning: ‘g_thread_init’ is deprecated (declared at /usr/include/glib-2.0/glib/deprecated/gthread.h:265) [-Wdeprecated-declarations]
  g_thread_init(NULL);
  ^
main.c:404:2: warning: ‘g_mutex_new’ is deprecated (declared at /usr/include/glib-2.0/glib/deprecated/gthread.h:277) [-Wdeprecated-declarations]
  combo_change_mutex = g_mutex_new();
  ^
if gcc -DHAVE_CONFIG_H -I. -I. -I../../src -I../lib -I.. -DLOCALEDIR=\"/usr/local/share/locale\"   -I/usr/include/libxml2 -pthread -I/usr/include/gtk-2.0 -I/usr/lib/x86_64-linux-gnu/gtk-2.0/include -I/usr/include/gio-unix-2.0/ -I/usr/include/cairo -I/usr/include/pango-1.0 -I/usr/include/atk-1.0 -I/usr/include/cairo -I/usr/include/pixman-1 -I/usr/include/libpng12 -I/usr/include/gdk-pixbuf-2.0 -I/usr/include/libpng12 -I/usr/include/pango-1.0 -I/usr/include/harfbuzz -I/usr/include/pango-1.0 -I/usr/include/freetype2 -I/usr/include/glib-2.0 -I/usr/lib/x86_64-linux-gnu/glib-2.0/include  -g -O2 -Wall  -DDATADIR="\"/usr/local/share/ddccontrol-db\"" -DBINDIR="\"/usr/local/bin\"" -MT notebook.o -MD -MP -MF ".deps/notebook.Tpo" -c -o notebook.o notebook.c; \
then mv -f ".deps/notebook.Tpo" ".deps/notebook.Po"; else rm -f ".deps/notebook.Tpo"; exit 1; fi
if gcc -DHAVE_CONFIG_H -I. -I. -I../../src -I../lib -I.. -DLOCALEDIR=\"/usr/local/share/locale\"   -I/usr/include/libxml2 -pthread -I/usr/include/gtk-2.0 -I/usr/lib/x86_64-linux-gnu/gtk-2.0/include -I/usr/include/gio-unix-2.0/ -I/usr/include/cairo -I/usr/include/pango-1.0 -I/usr/include/atk-1.0 -I/usr/include/cairo -I/usr/include/pixman-1 -I/usr/include/libpng12 -I/usr/include/gdk-pixbuf-2.0 -I/usr/include/libpng12 -I/usr/include/pango-1.0 -I/usr/include/harfbuzz -I/usr/include/pango-1.0 -I/usr/include/freetype2 -I/usr/include/glib-2.0 -I/usr/lib/x86_64-linux-gnu/glib-2.0/include  -g -O2 -Wall  -DDATADIR="\"/usr/local/share/ddccontrol-db\"" -DBINDIR="\"/usr/local/bin\"" -MT gprofile.o -MD -MP -MF ".deps/gprofile.Tpo" -c -o gprofile.o gprofile.c; \
then mv -f ".deps/gprofile.Tpo" ".deps/gprofile.Po"; else rm -f ".deps/gprofile.Tpo"; exit 1; fi
if gcc -DHAVE_CONFIG_H -I. -I. -I../../src -I../lib -I.. -DLOCALEDIR=\"/usr/local/share/locale\"   -I/usr/include/libxml2 -pthread -I/usr/include/gtk-2.0 -I/usr/lib/x86_64-linux-gnu/gtk-2.0/include -I/usr/include/gio-unix-2.0/ -I/usr/include/cairo -I/usr/include/pango-1.0 -I/usr/include/atk-1.0 -I/usr/include/cairo -I/usr/include/pixman-1 -I/usr/include/libpng12 -I/usr/include/gdk-pixbuf-2.0 -I/usr/include/libpng12 -I/usr/include/pango-1.0 -I/usr/include/harfbuzz -I/usr/include/pango-1.0 -I/usr/include/freetype2 -I/usr/include/glib-2.0 -I/usr/lib/x86_64-linux-gnu/glib-2.0/include  -g -O2 -Wall  -DDATADIR="\"/usr/local/share/ddccontrol-db\"" -DBINDIR="\"/usr/local/bin\"" -MT fspatterns.o -MD -MP -MF ".deps/fspatterns.Tpo" -c -o fspatterns.o fspatterns.c; \
then mv -f ".deps/fspatterns.Tpo" ".deps/fspatterns.Po"; else rm -f ".deps/fspatterns.Tpo"; exit 1; fi
/bin/bash ../../libtool --tag=CC --mode=link gcc -I/usr/include/libxml2 -pthread -I/usr/include/gtk-2.0 -I/usr/lib/x86_64-linux-gnu/gtk-2.0/include -I/usr/include/gio-unix-2.0/ -I/usr/include/cairo -I/usr/include/pango-1.0 -I/usr/include/atk-1.0 -I/usr/include/cairo -I/usr/include/pixman-1 -I/usr/include/libpng12 -I/usr/include/gdk-pixbuf-2.0 -I/usr/include/libpng12 -I/usr/include/pango-1.0 -I/usr/include/harfbuzz -I/usr/include/pango-1.0 -I/usr/include/freetype2 -I/usr/include/glib-2.0 -I/usr/lib/x86_64-linux-gnu/glib-2.0/include  -g -O2 -Wall  -DDATADIR="\"/usr/local/share/ddccontrol-db\"" -DBINDIR="\"/usr/local/bin\""   -o gddccontrol -lxml2 -lgtk-x11-2.0 -lgdk-x11-2.0 -lpangocairo-1.0 -latk-1.0 -lcairo -lgdk_pixbuf-2.0 -lgio-2.0 -lpangoft2-1.0 -lpango-1.0 -lgobject-2.0 -lfontconfig -lfreetype -lgthread-2.0 -pthread -lglib-2.0  main.o notebook.o gprofile.o fspatterns.o ../lib/libddccontrol.la -lpci
mkdir .libs
gcc -I/usr/include/libxml2 -pthread -I/usr/include/gtk-2.0 -I/usr/lib/x86_64-linux-gnu/gtk-2.0/include -I/usr/include/gio-unix-2.0/ -I/usr/include/cairo -I/usr/include/pango-1.0 -I/usr/include/atk-1.0 -I/usr/include/cairo -I/usr/include/pixman-1 -I/usr/include/libpng12 -I/usr/include/gdk-pixbuf-2.0 -I/usr/include/libpng12 -I/usr/include/pango-1.0 -I/usr/include/harfbuzz -I/usr/include/pango-1.0 -I/usr/include/freetype2 -I/usr/include/glib-2.0 -I/usr/lib/x86_64-linux-gnu/glib-2.0/include -g -O2 -Wall -DDATADIR=\"/usr/local/share/ddccontrol-db\" -DBINDIR=\"/usr/local/bin\" -o .libs/gddccontrol -pthread main.o notebook.o gprofile.o fspatterns.o  -lgtk-x11-2.0 -lgdk-x11-2.0 -lpangocairo-1.0 -latk-1.0 -lcairo -lgdk_pixbuf-2.0 -lgio-2.0 -lpangoft2-1.0 -lpango-1.0 -lgobject-2.0 -lfontconfig /usr/lib/x86_64-linux-gnu/libfreetype.so -lgthread-2.0 -lglib-2.0 ../lib/.libs/libddccontrol.so -lxml2 -lpci
/usr/bin/ld: notebook.o: undefined reference to symbol 'round@@GLIBC_2.2.5'
/lib/x86_64-linux-gnu/libm.so.6: error adding symbols: DSO missing from command line
collect2: error: ld returned 1 exit status
Makefile:332: recipe for target 'gddccontrol' failed
make[3]: *** [gddccontrol] Error 1
make[3]: Leaving directory '/home/amir/Downloads/ddccontrol-0.4.2/src/gddccontrol'
Makefile:304: recipe for target 'all-recursive' failed
make[2]: *** [all-recursive] Error 1
make[2]: Leaving directory '/home/amir/Downloads/ddccontrol-0.4.2/src'
Makefile:237: recipe for target 'all' failed
make[1]: *** [all] Error 2
make[1]: Leaving directory '/home/amir/Downloads/ddccontrol-0.4.2/src'
Makefile:308: recipe for target 'all-recursive' failed
make: *** [all-recursive] Error 1