Dear Bioconductor developer, During installation of Rgraphviz I get the following errors. * Installing *source* package 'Rgraphviz' ... checking for graphviz... checking for dotneato-config... not found checking for pkg-config... /usr/bin/pkg-config Package libgvc was not found in the pkg-config search path. Perhaps you should add the directory containing `libgvc.pc' to the PKG_CONFIG_PATH environment variable No package 'libgvc' found Package libgvc was not found in the pkg-config search path. Perhaps you should add the directory containing `libgvc.pc' to the PKG_CONFIG_PATH environment variable No package 'libgvc' found configure: creating ./config.status config.status: creating src/Makevars ** libs gcc -I/usr/lib/R/include -I/usr/lib/R/include -DGRAPHVIZGT_2_4 -I/usr/local/include -fpic -O2 -g -pipe -Wp,-D_FORTIFY_SOURCE=2 -fexceptions -m32 -march=i386 -mtune=pentium4 -fasynchronous-unwind- tables -c Rgraphviz.c -o Rgraphviz.o In file included from Rgraphviz.c:1: common.h:26:17: error: gvc.h: No such file or directory common.h:27:22: error: gvplugin.h: No such file or directory common.h:28:20: error: gvcext.h: No such file or directory common.h:29:20: error: gvcint.h: No such file or directory common.h:30:21: error: globals.h: No such file or directory In file included from Rgraphviz.c:1: common.h:47: error: syntax error before ?*? token common.h:47: warning: data definition has no type or storage class common.h:62: error: syntax error before ?*? token common.h:63: error: syntax error before ?*? token common.h:67: error: syntax error before ?*? token common.h:68: error: syntax error before ?*? token common.h:78: error: syntax error before ?*? token common.h:78: error: syntax error before ?*? token common.h:78: warning: data definition has no type or storage class common.h:79: error: syntax error before ?*? token common.h:79: error: syntax error before ?*? token common.h:79: warning: data definition has no type or storage class common.h:80: error: syntax error before ?*? token common.h:80: error: syntax error before ?*? token common.h:80: warning: data definition has no type or storage class common.h:83: error: syntax error before ?*? token common.h:83: error: syntax error before ?*? token common.h:83: warning: data definition has no type or storage class Rgraphviz.c: In function ?Rgraphviz_init?: Rgraphviz.c:92: error: ?AGERR? undeclared (first use in this function) Rgraphviz.c:92: error: (Each undeclared identifier is reported only once Rgraphviz.c:92: error: for each function it appears in.) Rgraphviz.c:98: warning: assignment makes pointer from integer without a cast Rgraphviz.c: In function ?Rgraphviz_fin?: Rgraphviz.c:108: error: ?Agraph_t? undeclared (first use in this function) Rgraphviz.c:108: error: ?g? undeclared (first use in this function) Rgraphviz.c: In function ?Rgraphviz_agread?: Rgraphviz.c:119: error: ?Agraph_t? undeclared (first use in this function) Rgraphviz.c:119: error: ?g? undeclared (first use in this function) Rgraphviz.c: In function ?Rgraphviz_agwrite?: Rgraphviz.c:134: error: ?Agraph_t? undeclared (first use in this function) Rgraphviz.c:134: error: ?g? undeclared (first use in this function) Rgraphviz.c: In function ?Rgraphviz_agopen?: Rgraphviz.c:159: error: ?Agraph_t? undeclared (first use in this function) Rgraphviz.c:159: error: ?g? undeclared (first use in this function) Rgraphviz.c:159: error: ?tmpGraph? undeclared (first use in this function) Rgraphviz.c:160: error: ?sgs? undeclared (first use in this function) Rgraphviz.c:161: error: ?Agnode_t? undeclared (first use in this function) Rgraphviz.c:161: error: ?head? undeclared (first use in this function) Rgraphviz.c:161: error: ?tail? undeclared (first use in this function) Rgraphviz.c:161: error: ?tmp? undeclared (first use in this function) Rgraphviz.c:162: error: ?Agedge_t? undeclared (first use in this function) Rgraphviz.c:162: error: ?curEdge? undeclared (first use in this function) Rgraphviz.c:191: error: syntax error before ?)? token Rgraphviz.c: In function ?Rgraphviz_getAttr?: Rgraphviz.c:296: error: ?Agraph_t? undeclared (first use in this function) Rgraphviz.c:296: error: ?g? undeclared (first use in this function) Rgraphviz.c:304: warning: passing argument 1 of ?R_scalarString? makes pointer from integer without a cast Rgraphviz.c: In function ?Rgraphviz_doLayout?: Rgraphviz.c:387: error: ?Agraph_t? undeclared (first use in this function) Rgraphviz.c:387: error: ?g? undeclared (first use in this function) Rgraphviz.c: At top level: Rgraphviz.c:711: error: syntax error before ?*? token Rgraphviz.c: In function ?buildRagraph?: Rgraphviz.c:714: error: ?g? undeclared (first use in this function) Rgraphviz.c: At top level: Rgraphviz.c:731: error: syntax error before ?*? token Rgraphviz.c: In function ?getBoundBox?: Rgraphviz.c:743: error: ?g? undeclared (first use in this function) Rgraphviz.c: At top level: Rgraphviz.c:755: error: syntax error before ?*? token Rgraphviz.c: In function ?getNodeLayouts?: Rgraphviz.c:756: error: ?Agnode_t? undeclared (first use in this function) Rgraphviz.c:756: error: ?node? undeclared (first use in this function) Rgraphviz.c:762: error: ?g? undeclared (first use in this function) Rgraphviz.c:790: warning: passing argument 1 of ?R_scalarString? makes pointer from integer without a cast Rgraphviz.c:792: warning: passing argument 1 of ?R_scalarString? makes pointer from integer without a cast Rgraphviz.c:794: warning: passing argument 1 of ?R_scalarString? makes pointer from integer without a cast Rgraphviz.c:796: warning: passing argument 1 of ?R_scalarString? makes pointer from integer without a cast Rgraphviz.c: At top level: Rgraphviz.c:839: error: syntax error before ?*? token Rgraphviz.c: In function ?getEdgeLocs?: Rgraphviz.c:842: error: ?Agnode_t? undeclared (first use in this function) Rgraphviz.c:842: error: ?node? undeclared (first use in this function) Rgraphviz.c:842: error: ?head? undeclared (first use in this function) Rgraphviz.c:843: error: ?Agedge_t? undeclared (first use in this function) Rgraphviz.c:843: error: ?edge? undeclared (first use in this function) Rgraphviz.c:845: error: ?bezier? undeclared (first use in this function) Rgraphviz.c:845: error: syntax error before ?bez? Rgraphviz.c:860: error: ?numEdges? undeclared (first use in this function) Rgraphviz.c:862: error: ?g? undeclared (first use in this function) Rgraphviz.c:869: error: ?bez? undeclared (first use in this function) Rgraphviz.c:917: warning: passing argument 1 of ?R_scalarString? makes pointer from integer without a cast Rgraphviz.c:919: warning: passing argument 1 of ?R_scalarString? makes pointer from integer without a cast Rgraphviz.c:921: warning: passing argument 1 of ?R_scalarString? makes pointer from integer without a cast Rgraphviz.c:924: warning: passing argument 1 of ?R_scalarString? makes pointer from integer without a cast Rgraphviz.c: In function ?Rgraphviz_graphvizVersion?: Rgraphviz.c:986: error: request for member ?info? in something not a structure or union Rgraphviz.c: At top level: Rgraphviz.c:993: error: syntax error before ?*? token Rgraphviz.c:993: error: syntax error before ?*? token Rgraphviz.c: In function ?setDefaultAttrs?: Rgraphviz.c:1002: error: ?attrs? undeclared (first use in this function) Rgraphviz.c:1006: error: ?g? undeclared (first use in this function) make: *** [Rgraphviz.o] Error 1 chmod: cannot access `/usr/lib/R/library/Rgraphviz/libs/*': No such file or directory ERROR: compilation failed for package 'Rgraphviz' ** Removing '/usr/lib/R/library/Rgraphviz' The downloaded packages are in /tmp/RtmpZc98B8/downloaded_packages Warning message: installation of package 'Rgraphviz' had non-zero exit status in: install.packages("Rgraphviz") I try to install Rgraphviz whith biocLite("Rgraphviz"), also with install.packages("Rgraphviz"), but the result is the same. Can you help me. Whith best regards, Julia Dmitrieva