安裝libg2c.so

照這個網頁的步驟, 安裝檔案後

回到R裡面 ./configure 就解決這個錯誤訊息了 XD

checking whether mixed C/Fortran code can be run... configure:
WARNING: cannot run mixed C/Fortran code
configure: error: Maybe check LDFLAGS for paths to Fortran libraries?

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http://gnxas.unicam.it/XASLABwww/pag_gnxas/gnxas_install_g77lib.html

Procedure:

• download the package g77_pack.tar in a suitable folder.
• unpack the tar archive:
  tar -xvf g77_pack.tar
• the generated directory will contain the following files:
  cpp-3.4_3.4.6-6ubuntu3_i386.deb
  g77-3.4_3.4.6-6ubuntu3_i386.deb
  gcc-3.4_3.4.6-6ubuntu3_i386.deb
  gcc-3.4-base_3.4.6-6ubuntu3_i386.deb
  libg2c0_3.4.6-6ubuntu3_i386.deb
  libg2c0-dev_3.4.6-6ubuntu3_i386.deb
  install.sh
  
• install the g77 package using the following command:
  sudo ./install.sh 

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可是後來make的時候遇到另一個錯誤訊息

Invalid declaration of or reference to symbol `tiny' at (^) [initially seen at (^)]
make[4]: *** [dlamch.o] Error 1

然後安裝  openjdk-6-jdk 就好了 XDD