安装rrdtool时,无法安装cairo

Find 3rd-Party Libraries
checking for cairo_font_options_create in -lcairo... yes
checking cairo.h usability... no
checking cairo.h presence... no
checking for cairo.h... no
checking for pkg-config... pkg-config
configure: WARNING:
----------------------------------------------------------------------------
* I found a copy of pkgconfig, but there is no cairo-png.pc file around.
  You may want to set the PKG_CONFIG_PATH variable to point to its
  location.
----------------------------------------------------------------------------

configure: WARNING:
----------------------------------------------------------------------------
* I could not find a working copy of cairo-png. Check config.log for hints on why
  this is the case. Maybe you need to set LDFLAGS and CPPFLAGS appropriately
  so that compiler and the linker can find libcairo and its header files. If
  you have not installed cairo-png, you can get it either from its original home on

     http://cairographics.org/releases/

  You can find also find an archive copy on

     http://oss.oetiker.ch/rrdtool/pub/libs

  The last tested version of cairo-png is 1.4.6.

       LIBS=-lm
   LDFLAGS=
  CPPFLAGS=

----------------------------------------------------------------------------
              
checking for cairo_svg_surface_create in -lcairo... yes
checking cairo-svg.h usability... no
checking cairo-svg.h presence... no
checking for cairo-svg.h... no
checking for pkg-config... (cached) pkg-config
configure: WARNING:
----------------------------------------------------------------------------
* I found a copy of pkgconfig, but there is no cairo-svg.pc file around.
  You may want to set the PKG_CONFIG_PATH variable to point to its
  location.
----------------------------------------------------------------------------

configure: WARNING:
----------------------------------------------------------------------------
* I could not find a working copy of cairo-svg. Check config.log for hints on why
  this is the case. Maybe you need to set LDFLAGS and CPPFLAGS appropriately
  so that compiler and the linker can find libcairo and its header files. If
  you have not installed cairo-svg, you can get it either from its original home on

     http://cairographics.org/releases/

  You can find also find an archive copy on

     http://oss.oetiker.ch/rrdtool/pub/libs

  The last tested version of cairo-svg is 1.4.6.

       LIBS=-lm
   LDFLAGS=
  CPPFLAGS=

----------------------------------------------------------------------------
              
checking for cairo_pdf_surface_create in -lcairo... yes
checking cairo-pdf.h usability... no
checking cairo-pdf.h presence... no
checking for cairo-pdf.h... no
checking for pkg-config... (cached) pkg-config
configure: WARNING:
----------------------------------------------------------------------------
* I found a copy of pkgconfig, but there is no cairo-pdf.pc file around.
  You may want to set the PKG_CONFIG_PATH variable to point to its
  location.
----------------------------------------------------------------------------

configure: WARNING:
----------------------------------------------------------------------------
* I could not find a working copy of cairo-pdf. Check config.log for hints on why
  this is the case. Maybe you need to set LDFLAGS and CPPFLAGS appropriately
  so that compiler and the linker can find libcairo and its header files. If
  you have not installed cairo-pdf, you can get it either from its original home on

     http://cairographics.org/releases/

  You can find also find an archive copy on

     http://oss.oetiker.ch/rrdtool/pub/libs

  The last tested version of cairo-pdf is 1.4.6.

       LIBS=-lm
   LDFLAGS=
  CPPFLAGS=

----------------------------------------------------------------------------
              
checking for cairo_ps_surface_create in -lcairo... yes
checking cairo-ps.h usability... no
checking cairo-ps.h presence... no
checking for cairo-ps.h... no
checking for pkg-config... (cached) pkg-config
configure: WARNING:
----------------------------------------------------------------------------
* I found a copy of pkgconfig, but there is no cairo-ps.pc file around.
  You may want to set the PKG_CONFIG_PATH variable to point to its
  location.
----------------------------------------------------------------------------

configure: WARNING:
----------------------------------------------------------------------------
* I could not find a working copy of cairo-ps. Check config.log for hints on why
  this is the case. Maybe you need to set LDFLAGS and CPPFLAGS appropriately
  so that compiler and the linker can find libcairo and its header files. If
  you have not installed cairo-ps, you can get it either from its original home on

     http://cairographics.org/releases/

  You can find also find an archive copy on

     http://oss.oetiker.ch/rrdtool/pub/libs

  The last tested version of cairo-ps is 1.4.6.

       LIBS=-lm
   LDFLAGS=
  CPPFLAGS=

----------------------------------------------------------------------------
              
checking for pango_cairo_context_set_font_options in -lpango-1.0... no
checking for pkg-config... (cached) pkg-config
configure: WARNING:
----------------------------------------------------------------------------
* I found a copy of pkgconfig, but there is no pangocairo.pc file around.
  You may want to set the PKG_CONFIG_PATH variable to point to its
  location.
----------------------------------------------------------------------------

configure: WARNING:
----------------------------------------------------------------------------
* I could not find a working copy of pangocairo. Check config.log for hints on why
  this is the case. Maybe you need to set LDFLAGS and CPPFLAGS appropriately
  so that compiler and the linker can find libpango-1.0 and its header files. If
  you have not installed pangocairo, you can get it either from its original home on

     http://ftp.gnome.org/pub/GNOME/sources/pango/1.17

  You can find also find an archive copy on

     http://oss.oetiker.ch/rrdtool/pub/libs

  The last tested version of pangocairo is 1.17.

       LIBS=-lm
   LDFLAGS=

解决：

export PKG_CONFIG_PATH=${INSTALL_DIR}/lib/pkgconfig
export PATH=$INSTALL_DIR/binPATH


安装cairo-devel和pango-devel