Can't install Imagemagick on Mountain Lion

Yesterday I updated to Mountain Lion and I wanted to start my rails app and had some problems with Rmagick gem. After reading on the net I did the following :

• Installed Xcode 4.4
• Installed developper tools
• Installed Xquartz
• Uninstalled imagemagick using brew
• Installed imagemagick with brew

During this installation I receive an error :

coders/svg.c:93:10: fatal error: 'librsvg/rsvg.h' file not found

Full log

 ==> Downloading http://downloads.sf.net/project/machomebrew/mirror/ImageMagick-6.7.7-   6.tar.bz2
    Already downloaded: /Library/Caches/Homebrew/imagemagick-6.7.7-6.tar.bz2
==> Patching
patching file configure
Hunk #1 succeeded at 32371 (offset 447 lines).
==> ./configure --disable-osx-universal-binary --without-perl --prefix=/usr/local/Cellar/imagemagick/6.7.7-6 --enable-shared --disable-st
==> make install
/bin/sh ./config/mkinstalldirs . ltdl/
cp ./ltdl/argz_.h ltdl/argz.h-t
mv ltdl/argz.h-t ltdl/argz.h
make  install-am
  CC     ltdl/argz.lo
  CC     coders/coders_tga_la-tga.lo
  CC     coders/coders_thumbnail_la-thumbnail.lo
  CC     coders/coders_tile_la-tile.lo
  CC     coders/coders_tim_la-tim.lo
  CC     coders/coders_ttf_la-ttf.lo
  CC     coders/coders_txt_la-txt.lo
  CC     coders/coders_uil_la-uil.lo
  CC     coders/coders_url_la-url.lo
  CC     coders/coders_uyvy_la-uyvy.lo
  CC     coders/coders_vicar_la-vicar.lo
  CC     coders/coders_vid_la-vid.lo
  CC     coders/coders_viff_la-viff.lo
  CC     coders/coders_wbmp_la-wbmp.lo
  CC     coders/coders_wpg_la-wpg.lo
  CC     coders/coders_xbm_la-xbm.lo
  CC     coders/coders_xc_la-xc.lo
  CC     coders/coders_xcf_la-xcf.lo
  CC     coders/coders_xpm_la-xpm.lo
  CC     coders/coders_xps_la-xps.lo
  CC     coders/coders_ycbcr_la-ycbcr.lo
  CC     coders/coders_yuv_la-yuv.lo
  CC     coders/coders_jpeg_la-jpeg.lo
  CC     coders/coders_jp2_la-jp2.lo
  CC     coders/coders_png_la-png.lo
  CC     coders/coders_ept_la-ept.lo
  CC     coders/coders_tiff_la-tiff.lo
  CC     coders/coders_x_la-x.lo
  CC     coders/coders_xwd_la-xwd.lo
  CC     coders/coders_aai_la-aai.lo
  CC     magick/magick_libMagickCore_la-accelerate.lo
  CC     magick/magick_libMagickCore_la-animate.lo
  CC     magick/magick_libMagickCore_la-annotate.lo
  CC     magick/magick_libMagickCore_la-artifact.lo
  CC     magick/magick_libMagickCore_la-attribute.lo
  CC     magick/magick_libMagickCore_la-blob.lo
  CC     magick/magick_libMagickCore_la-cache.lo
  CC     magick/magick_libMagickCore_la-cache-view.lo
  CC     magick/magick_libMagickCore_la-cipher.lo
  CC     magick/magick_libMagickCore_la-client.lo
  CC     magick/magick_libMagickCore_la-coder.lo
  CC     magick/magick_libMagickCore_la-color.lo
  CC     magick/magick_libMagickCore_la-colormap.lo
  CC     magick/magick_libMagickCore_la-colorspace.lo
  CC     magick/magick_libMagickCore_la-compare.lo
  CC     magick/magick_libMagickCore_la-composite.lo
  CC     magick/magick_libMagickCore_la-compress.lo
  CC     magick/magick_libMagickCore_la-configure.lo
  CC     magick/magick_libMagickCore_la-constitute.lo
  CC     magick/magick_libMagickCore_la-decorate.lo
  CC     magick/magick_libMagickCore_la-delegate.lo
  CC     magick/magick_libMagickCore_la-deprecate.lo
  CC     magick/magick_libMagickCore_la-display.lo
  CC     magick/magick_libMagickCore_la-distort.lo
  CC     magick/magick_libMagickCore_la-draw.lo
  CC     magick/magick_libMagickCore_la-effect.lo
  CC     magick/magick_libMagickCore_la-enhance.lo
  CC     magick/magick_libMagickCore_la-exception.lo
  CC     magick/magick_libMagickCore_la-feature.lo
  CC     magick/magick_libMagickCore_la-fourier.lo
  CC     magick/magick_libMagickCore_la-fx.lo
  CC     magick/magick_libMagickCore_la-gem.lo
  CC     magick/magick_libMagickCore_la-geometry.lo
  CC     magick/magick_libMagickCore_la-hashmap.lo
  CC     magick/magick_libMagickCore_la-histogram.lo
  CC     magick/magick_libMagickCore_la-identify.lo
  CC     magick/magick_libMagickCore_la-image.lo
  CC     magick/magick_libMagickCore_la-image-view.lo
  CC     magick/magick_libMagickCore_la-layer.lo
  CC     magick/magick_libMagickCore_la-list.lo
  CC     magick/magick_libMagickCore_la-locale.lo
  CC     magick/magick_libMagickCore_la-log.lo
  CC     magick/magick_libMagickCore_la-magic.lo
  CC     magick/magick_libMagickCore_la-magick.lo
  CC     magick/magick_libMagickCore_la-matrix.lo
  CC     magick/magick_libMagickCore_la-memory.lo
  CC     magick/magick_libMagickCore_la-mime.lo
  CC     magick/magick_libMagickCore_la-module.lo
  CC     magick/magick_libMagickCore_la-monitor.lo
  CC     magick/magick_libMagickCore_la-montage.lo
  CC     magick/magick_libMagickCore_la-morphology.lo
  CC     magick/magick_libMagickCore_la-option.lo
  CC     magick/magick_libMagickCore_la-paint.lo
  CC     magick/magick_libMagickCore_la-pixel.lo
  CC     magick/magick_libMagickCore_la-policy.lo
  CC     magick/magick_libMagickCore_la-PreRvIcccm.lo
  CC     magick/magick_libMagickCore_la-prepress.lo
  CC     magick/magick_libMagickCore_la-property.lo
  CC     magick/magick_libMagickCore_la-profile.lo
  CC     magick/magick_libMagickCore_la-quantize.lo
  CC     magick/magick_libMagickCore_la-quantum.lo
  CC     magick/magick_libMagickCore_la-quantum-export.lo
  CC     magick/magick_libMagickCore_la-quantum-import.lo
  CC     magick/magick_libMagickCore_la-random.lo
  CC     magick/magick_libMagickCore_la-registry.lo
  CC     magick/magick_libMagickCore_la-resize.lo
  CC     magick/magick_libMagickCore_la-resample.lo
  CC     magick/magick_libMagickCore_la-resource.lo
  CC     magick/magick_libMagickCore_la-segment.lo
  CC     magick/magick_libMagickCore_la-semaphore.lo
  CC     magick/magick_libMagickCore_la-shear.lo
  CC     magick/magick_libMagickCore_la-signature.lo
  CC     magick/magick_libMagickCore_la-splay-tree.lo
  CC     magick/magick_libMagickCore_la-static.lo
  CC     magick/magick_libMagickCore_la-statistic.lo
  CC     magick/magick_libMagickCore_la-stream.lo
  CC     magick/magick_libMagickCore_la-string.lo
  CC     magick/magick_libMagickCore_la-thread.lo
  CC     magick/magick_libMagickCore_la-timer.lo
  CC     magick/magick_libMagickCore_la-token.lo
  CC     magick/magick_libMagickCore_la-transform.lo
  CC     magick/magick_libMagickCore_la-threshold.lo
  CC     magick/magick_libMagickCore_la-type.lo
  CC     magick/magick_libMagickCore_la-utility.lo
  CC     magick/magick_libMagickCore_la-version.lo
  CC     magick/magick_libMagickCore_la-widget.lo
  CC     magick/magick_libMagickCore_la-xml-tree.lo
  CC     magick/magick_libMagickCore_la-xwindow.lo
  CC     ltdl/loaders/ltdl_libltdlc_la-preopen.lo
  CC     ltdl/ltdl_libltdlc_la-lt__alloc.lo
  CC     ltdl/ltdl_libltdlc_la-lt_dlloader.lo
  CC     ltdl/ltdl_libltdlc_la-lt_error.lo
  CC     ltdl/ltdl_libltdlc_la-ltdl.lo
  CC     ltdl/ltdl_libltdlc_la-slist.lo
  CC     ltdl/loaders/dlopen.lo
  CC     coders/coders_art_la-art.lo
  CC     coders/coders_avs_la-avs.lo
  CC     coders/coders_bgr_la-bgr.lo
  CC     coders/coders_bmp_la-bmp.lo
  CC     coders/coders_braille_la-braille.lo
  CC     coders/coders_cals_la-cals.lo
  CC     coders/coders_caption_la-caption.lo
  CC     coders/coders_cin_la-cin.lo
  CC     coders/coders_cip_la-cip.lo
  CC     coders/coders_clip_la-clip.lo
  CC     coders/coders_cmyk_la-cmyk.lo
  CC     coders/coders_cut_la-cut.lo
  CC     coders/coders_dcm_la-dcm.lo
  CC     coders/coders_dds_la-dds.lo
  CC     coders/coders_debug_la-debug.lo
  CC     coders/coders_dib_la-dib.lo
  CC     coders/coders_dng_la-dng.lo
  CC     coders/coders_dot_la-dot.lo
  CC     coders/coders_dpx_la-dpx.lo
  CC     coders/coders_fax_la-fax.lo
  CC     coders/coders_fd_la-fd.lo
  CC     coders/coders_fits_la-fits.lo
  CC     coders/coders_gif_la-gif.lo
  CC     coders/coders_gradient_la-gradient.lo
  CC     coders/coders_gray_la-gray.lo
  CC     coders/coders_hald_la-hald.lo
  CC     coders/coders_hdr_la-hdr.lo
  CC     coders/coders_histogram_la-histogram.lo
  CC     coders/coders_hrz_la-hrz.lo
  CC     coders/coders_html_la-html.lo
  CC     coders/coders_icon_la-icon.lo
  CC     coders/coders_inline_la-inline.lo
  CC     coders/coders_info_la-info.lo
  CC     coders/coders_ipl_la-ipl.lo
  CC     coders/coders_label_la-label.lo
  CC     coders/coders_mac_la-mac.lo
  CC     coders/coders_magick_la-magick.lo
  CC     coders/coders_map_la-map.lo
  CC     coders/coders_mat_la-mat.lo
  CC     coders/coders_matte_la-matte.lo
  CC     coders/coders_meta_la-meta.lo
  CC     coders/coders_miff_la-miff.lo
  CC     coders/coders_mono_la-mono.lo
  CC     coders/coders_mpc_la-mpc.lo
  CC     coders/coders_mpeg_la-mpeg.lo
  CC     coders/coders_mpr_la-mpr.lo
  CC     coders/coders_msl_la-msl.lo
  CC     coders/coders_mtv_la-mtv.lo
  CC     coders/coders_mvg_la-mvg.lo
  CC     coders/coders_null_la-null.lo
  CC     coders/coders_otb_la-otb.lo
  CC     coders/coders_palm_la-palm.lo
  CC     coders/coders_pango_la-pango.lo
  CC     coders/coders_pattern_la-pattern.lo
  CC     coders/coders_pcd_la-pcd.lo
  CC     coders/coders_pcl_la-pcl.lo
  CC     coders/coders_pcx_la-pcx.lo
  CC     coders/coders_pdb_la-pdb.lo
  CC     coders/coders_pdf_la-pdf.lo
  CC     coders/coders_pes_la-pes.lo
  CC     coders/coders_pict_la-pict.lo
  CC     coders/coders_pix_la-pix.lo
  CC     coders/coders_plasma_la-plasma.lo
  CC     coders/coders_pnm_la-pnm.lo
  CC     coders/coders_preview_la-preview.lo
  CC     coders/coders_ps_la-ps.lo
  CC     coders/coders_ps2_la-ps2.lo
  CC     coders/coders_ps3_la-ps3.lo
  CC     coders/coders_psd_la-psd.lo
  CC     coders/coders_pwp_la-pwp.lo
  CC     coders/coders_raw_la-raw.lo
  CC     coders/coders_rgb_la-rgb.lo
  CC     coders/coders_rla_la-rla.lo
  CC     coders/coders_rle_la-rle.lo
  CC     coders/coders_scr_la-scr.lo
  CC     coders/coders_sct_la-sct.lo
  CC     coders/coders_sfw_la-sfw.lo
  CC     coders/coders_sgi_la-sgi.lo
  CC     coders/coders_stegano_la-stegano.lo
  CC     coders/coders_sun_la-sun.lo
  CC     coders/coders_svg_la-svg.lo
  CC     wand/wand_libMagickWand_la-animate.lo
coders/svg.c:93:10: fatal error: 'librsvg/rsvg.h' file not found
#include "librsvg/rsvg.h"
         ^
  CC     wand/wand_libMagickWand_la-compare.lo
1 error generated.
make[1]: *** [coders/coders_svg_la-svg.lo] Error 1
make[1]: *** Waiting for unfinished jobs....
make: *** [install] Error 2
config.log was copied to /Users/dries/Library/Logs/Homebrew
==> Build Environment
HOMEBREW_VERSION: 0.9.2
HEAD: 20ad5702c5bdb89e7a52c0b7407d58dbbf6a9afd
CPU: quad-core 64-bit arrandale
OS X: 10.8-x86_64
Xcode: 4.4
CLT: 4.4.0.0.1.1249367152
X11: 2.7.2 @ /opt/X11
CC: /usr/bin/clang
CXX: /usr/bin/clang++ => /usr/bin/clang
LD: /usr/bin/clang
CFLAGS: -Os -w -pipe -march=native -Qunused-arguments -mmacosx-version-min=10.8
CXXFLAGS: -Os -w -pipe -march=native -Qunused-arguments -mmacosx-version-min=10.8
CPPFLAGS: -I/usr/local/Cellar/gettext/0.18.1.1/include -isystem /usr/local/include -I/opt/X11/include
CMAKE_PREFIX_PATH: /opt/X11:/opt/X11
LDFLAGS: -L/usr/local/Cellar/gettext/0.18.1.1/lib -L/usr/local/lib -L/opt/X11/lib
MACOSX_DEPLOYMENT_TARGET: 10.8
MAKEFLAGS: -j4
PKG_CONFIG_PATH: /opt/X11/share/pkgconfig:/opt/X11/lib/pkgconfig:/usr/local/Library/Homebrew/pkgconfig
Error: Failed executing: make install (imagemagick.rb:137)
These existing issues may help you:
    https://github.com/mxcl/homebrew/issues/13618
    https://github.com/mxcl/homebrew/issues/13638
Otherwise, this may help you fix or report the issue:
    https://github.com/mxcl/homebrew/wiki/bug-fixing-checklist

For the moment I'm running out of possible steps I can take. Somebody knows what is wrong with this installation?

I wasted a lot of time for this one. In the end I did as stated on this site:

http://robots.thoughtbot.com/post/27985816073/the-hitchhikers-guide-to-riding-a-mountain-lion

And (the thing that seemed to fix it for me) was running brew doctor and fixing every single issue until it did not complain any longer. Now I have imagemagick installed. Hope it helps.