Issues in building i686 to mips cross compiler

[Darrell Bellert]

Hello, I have a couple of concerns in creating a mips-ecoff cross
compiler on RedHat 7.0 that I was hoping someone could address.

First, however, here is the script I used (modeled after section 4.1 of
the FAQ) in order to create the compiler:
-------------------------------------------------------------------------------------------------------------------------------------
#!/bin/sh
########################################################################################################
#Script to create a cross compiler
########################################################################################################


#<<<<<------------------------- VARIABLES
-------------------------->>>>>


############################################
##### VERSIONS OF UTILITIES TO INSTALL #####
############################################
BINUTILS=binutils-2.10.1		# Name of bin-utils directory
GCC=gcc-2.95.2				# Name of gcc directory
NEWLIB=newlib-1.8.2			# Name of newlib directory
GDB=gdb-5.0				# Name of gdb directory

###################################
##### INSTALLATION PARAMETERS #####
###################################
HOST=i686-pc-linux-gnu			# Host machine (machine where you are building
the compiler)
TARGET=mips-ecoff			# Target machine (machine for which the compiler
will generate code)
PREFIX=/pika/dbellert/MIPS2		# Root directory for compiler
HEADERS=`pwd`/Include			# Target machine header files
LIBS=`pwd`/Lib				# Target machine libraries
CC=/usr/bin/gcc				# A working C compiler


#<<<<<------------------------- PROCEDURE
-------------------------->>>>>


###########################################################
##### THROW IN SOME BLANK SPACE TO DELINEATE SECTIONS #####
###########################################################
delineate(){
  echo
  echo
  echo
  echo $1
  echo
"<--------------------------------------------------------------------------------->"
  echo
  echo
  echo
}



#################################################
##### REPORT A CONFIGURATION ERROR AND EXIT #####
#################################################
config_err(){
  echo
  echo
  echo "Error configuring $1"
  exit
}


  
########################################
##### REPORT A MAKE ERROR AND EXIT #####
########################################
make_err(){
  echo
  echo
  echo "Error making $1"
  exit
}



###############################################
##### PROCEDURE FOR MAKING CROSS COMPILER #####
###############################################
export CC
PATH=$PATH:$PREFIX/bin
for i in build-binutils build-gcc build-newlib build-gdb
do
  if [[ -d $i ]]
  then
    rm -r $i
  fi
  mkdir $i
done

cd build-binutils
delineate "CONFIGURING BINUTILS"
../$BINUTILS/configure --host=$HOST --target=$TARGET --prefix=$PREFIX -v
|| config_err BINUTILS
delineate "MAKING BINUTILS"
make all install || make_err BINUTILS

cd ../build-gcc
delineate "CONFIGURING GCC"
../$GCC/configure --host=$HOST --target=$TARGET --prefix=$PREFIX -v
--with-headers=$HEADERS --with-libs=$LIBS --with-gnu-as --with-gnu-ld
--with-newlib || config_err GCC
delineate "MAKING GCC"
make all install || make_err GCC

cd ../build-newlib
delineate "CONFIGURING NEWLIB"
../$NEWLIB/configure --host=$HOST --target=$TARGET --prefix=$PREFIX -v
|| config_err NEWLIB
delineate "MAKING NEWLIB"
make all install || make_err NEWLIB

cd ../build-gdb
delineate "CONFIGURING GDB"
../$GDB/configure --target=$TARGET --prefix=$PREFIX -v || config_err GDB
delineate "MAKING GDB"
make all install || make_err GDB
--------------------------------------------------------------------------------------------------------------------------------------------------------
Here are my concerns:

(1)  In order for GCC to build correctly, I had to setup the PATH
variable to include $PREFIX/bin.  Without doing this, I would get an
error:

/bin/sh: mips-ecoff-ar: command not found

The reason for this concern is that the FAQ does not mention modifying
the PATH variable until you get to NEWLIB.  I just wanted to make sure
that modifying my path did not have any adverse effects that are not
obvious.  Any thoughts?


(2)  I got three errors while making GCC:

make[3]: Entering directory
`/pika/dbellert/Stuff6/build-gcc/mips-ecoff/libstdc++/testsuite'
make[3]: Leaving directory
`/pika/dbellert/Stuff6/build-gcc/mips-ecoff/libstdc++/testsuite'
make[2]: Leaving directory
`/pika/dbellert/Stuff6/build-gcc/mips-ecoff/libstdc++'
make[1]: Leaving directory
`/pika/dbellert/Stuff6/build-gcc/mips-ecoff/libstdc++'
Configuring in mips-ecoff/libf2c
creating cache ./config.cache
checking if compiler f771 has been built... yes
checking for gcc... /home/dbellert/Stuff6/build-gcc/gcc/xgcc
-B/home/dbellert/Stuff6/build-gcc/gcc/
-B/home/dbellert/Stuff6/Build/mips-ecoff/bin/
checking whether the C compiler
(/home/dbellert/Stuff6/build-gcc/gcc/xgcc
-B/home/dbellert/Stuff6/build-gcc/gcc/
-B/home/dbellert/Stuff6/Build/mips-ecoff/bin/ -g -O2 ) works... no
configure: error: installation or configuration problem: C compiler
cannot create executables.
Configuring in mips-ecoff/libchill
creating cache ./config.cache
checking if compiler cc1chill has been built... yes
checking for gcc... /home/dbellert/Stuff6/build-gcc/gcc/xgcc
-B/home/dbellert/Stuff6/build-gcc/gcc/
-B/home/dbellert/Stuff6/Build/mips-ecoff/bin/
checking whether the C compiler
(/home/dbellert/Stuff6/build-gcc/gcc/xgcc
-B/home/dbellert/Stuff6/build-gcc/gcc/
-B/home/dbellert/Stuff6/Build/mips-ecoff/bin/ -g -O2 ) works... no
configure: error: installation or configuration problem: C compiler
cannot create executables.
Configuring in mips-ecoff/libobjc
creating cache ./config.cache
checking if compiler cc1obj has been built... yes
checking for gcc... /home/dbellert/Stuff6/build-gcc/gcc/xgcc
-B/home/dbellert/Stuff6/build-gcc/gcc/
-B/home/dbellert/Stuff6/Build/mips-ecoff/bin/
checking whether the C compiler
(/home/dbellert/Stuff6/build-gcc/gcc/xgcc
-B/home/dbellert/Stuff6/build-gcc/gcc/
-B/home/dbellert/Stuff6/Build/mips-ecoff/bin/ -g -O2 ) works... no
configure: error: installation or configuration problem: C compiler
cannot create executables.
/bin/sh ../gcc-2.95.2/mkinstalldirs /home/dbellert/Stuff6/Build
/home/dbellert/Stuff6/Build


Even though installation ultimately completed, is there any reason for
concern for the above errors (configure: error: installation or
configuration problem: C compiler cannot create executables.)?


(3)  I got numerous warnings during the make process (about 4300).  Is
this normal or should this also be a cause for concern?


If anyone has any comments for these concerns, please share.

Thanks,

Darrell