configure.host

上一个上传的有问题,这个是好的。visopsys包括系统内核和GUI的全部SOURCE code ,还包括一些基本的docs文档。里面src子目录对应所有SOURCE code.对于想研究操作系统的朋

# This is the linker host specific file.  This is invoked by the
# autoconf generated configure script.  Putting it in a separate shell
# file lets us skip running autoconf when modifying host specific
# information.

# This file sets the following shell variables:
#  HDEFINES		host specific compiler flags
#  HOSTING_CRT0		crt0.o file used for bootstrapping
#  HOSTING_LIBS		libraries used for bootstrapping
#  NATIVE_LIB_DIRS	library directories to search on this host

HDEFINES=
HOSTING_CRT0=/lib/crt0.o
HOSTING_LIBS='`if [ -f ../gcc/libgcc.a ]; then libgcc=../gcc/libgcc.a; else libgcc=\`${CC} -print-libgcc-file-name\`; fi; if [ -f ../gcc/libgcc_eh.a ]; then libgcc="$libgcc ../gcc/libgcc_eh.a"; else libgcc_eh=\`${CC} -print-file-name=libgcc_eh.a\`; if [ x"$libgcc_eh" != xlibgcc_eh.a ]; then libgcc="$libgcc $libgcc_eh"; fi; fi; echo $libgcc -lc $libgcc`'
NATIVE_LIB_DIRS='/usr/local/lib /lib /usr/lib'

#
#	Generic configurations:
#

case "${host}" in

*-*-freebsd*)
  NATIVE_LIB_DIRS='/lib /usr/lib /usr/local/lib'
  # Older versions of gcc do not use a specs file.  In those cases,
  # gcc -print-file-name=specs will simply print specs.  We create a
  # dummy specs files to handle this.
  echo "-dynamic-linker `${CC} --print-file-name=ld-elf.so.1`" > specs
  HOSTING_CRT0='-dynamic-linker `${CC} --print-file-name=ld-elf.so.1` `${CC} --print-file-name=crt1.o` `${CC} --print-file-name=crti.o` `${CC} --print-file-name=crtbegin.o`'
  HOSTING_LIBS='-L`dirname \`${CC} --print-file-name=libc.so\`` '"$HOSTING_LIBS"' `if [ -f ../gcc/crtend.o ]; then echo ../gcc/crtend.o; else ${CC} --print-file-name=crtend.o; fi` `${CC} --print-file-name=crtn.o`'
  ;;

*-*-linux*aout* | *-*-linux*oldld)
  HOSTING_CRT0=/usr/lib/crt0.o
  ;;

*-*-linux*libc1*)
  HOSTING_CRT0='-dynamic-linker /lib/ld-linux.so.1 /usr/lib/crt1.o /usr/lib/crti.o `if [ -f ../gcc/crtbegin.o ]; then echo ../gcc/crtbegin.o; elif [ -f /usr/lib/crtbegin.o ]; then echo /usr/lib/crtbegin.o; else ${CC} --print-file-name=crtbegin.o; fi`'
  HOSTING_LIBS="$HOSTING_LIBS"' `if [ -f ../gcc/crtend.o ]; then echo ../gcc/crtend.o; elif [ -f /usr/lib/crtend.o ]; then echo /usr/lib/crtend.o; else ${CC} --print-file-name=crtend.o; fi` /usr/lib/crtn.o'
  ;;

*-*-linux*)
  HOSTING_CRT0='-dynamic-linker `egrep "ld[^ ]*\.so" \`${CC} --print-file-name=specs\` | sed -e "s,.*-dynamic-linker[ 	][ 	]*\(.*/ld[^ ]*\.so..\).*,\1,"` `${CC} --print-file-name=crt1.o` `${CC} --print-file-name=crti.o` `if [ -f ../gcc/crtbegin.o ]; then echo ../gcc/crtbegin.o; else ${CC} --print-file-name=crtbegin.o; fi`'
  HOSTING_LIBS='-L`dirname \`${CC} --print-file-name=libc.so\`` '"$HOSTING_LIBS"' `if [ -f ../gcc/crtend.o ]; then echo ../gcc/crtend.o; else ${CC} --print-file-name=crtend.o; fi` `${CC} --print-file-name=crtn.o`'
  ;;

esac

#
# Now more specific configurations
#

case "${host}" in

*-*-linux*aout* | *-*-linux*oldld | *-*-linux*libc1*)
  # No further tweaking needed
  ;;

alpha*-*-netbsd*)
  HOSTING_CRT0=/usr/lib/crt0.o
  ;;

arm*-*-linux-gnu*)
  HOSTING_CRT0='-p '`echo "$HOSTING_CRT0" | sed -e "s,ld\[^ \]*\*,ld-linux,g"`
  ;;

hppa*64*-*-hpux11*)
  NATIVE_LIB_DIRS=/usr/lib/pa20_64
  HOSTING_CRT0=/usr/ccs/lib/pa20_64/crt0.o
  # Even if CC is not gcc, the tests use gcc.
  HOSTING_LIBS='`if [ -f ../gcc/libgcc.a ] ; then echo ../gcc/libgcc.a ; else if test "$GCC" = yes; then ${CC} --print-libgcc-file-name; else gcc --print-libgcc-file-name; fi fi` -lc /usr/lib/pa20_64/milli.a'
  ;;

i[3456]86-*-bsd* | i[34567]86-*-freebsd[12] | i[34567]86-*-freebsd[12]\.* | i[34567]86-*-freebsd*aout* | i[3456]86-*-netbsd*)
  HOSTING_CRT0=/usr/lib/crt0.o
  ;;

i[3456]86-*-sysv4*)
  HOSTING_CRT0='/usr/ccs/lib/crt1.o /usr/ccs/lib/crti.o /usr/ccs/lib/values-Xa.o `if [ -f ../gcc/crtbegin.o ]; then echo ../gcc/crtbegin.o; else ${CC} -print-file-name=crtbegin.o; fi`'
  HOSTING_LIBS="$HOSTING_LIBS"' `if [ -f ../gcc/crtend.o ]; then echo ../gcc/crtend.o; else ${CC} -print-file-name=crtend.o; fi` /usr/ccs/lib/crtn.o'
  NATIVE_LIB_DIRS='/usr/local/lib /usr/ccs/lib /lib /usr/lib'
  ;;

i[3456]86-sequent-ptx* | i[3456]86-sequent-sysv*)
  HOSTING_CRT0='/lib/crt0.o `if [ -f ../gcc/crtbegin.o ]; then echo ../gcc/crtbegin.o; else ${CC} -print-file-name=crtbegin.o; fi`'
  HOSTING_LIBS="$HOSTING_LIBS"' `if [ -f ../gcc/crtend.o ]; then echo ../gcc/crtend.o; else ${CC} -print-file-name=crtend.o; fi`'
  ;;

i[3456]86-*-sysv*)
  HOSTING_CRT0='/lib/crt1.o `if [ -f ../gcc/crtbegin.o ]; then echo ../gcc/crtbegin.o; fi`'
  HOSTING_LIBS="$HOSTING_LIBS"' `if [ -f ../gcc/crtend.o ]; then echo ../gcc/crtend.o; fi` /lib/crtn.o'
  ;;

i[3456]86-*-solaris*)
  HOSTING_CRT0='`if [ -f ../gcc/crt1.o ]; then echo ../gcc/crt1.o; else ${CC} -print-file-name=crt1.o; fi` `if [ -f ../gcc/crti.o ]; then echo ../gcc/crti.o; else ${CC} -print-file-name=crti.o; fi` /usr/ccs/lib/values-Xa.o `if [ -f ../gcc/crtbegin.o ]; then echo ../gcc/crtbegin.o; else ${CC} -print-file-name=crtbegin.o; fi`'
  HOSTING_LIBS="$HOSTING_LIBS"' `if [ -f ../gcc/crtend.o ]; then echo ../gcc/crtend.o; else ${CC} -print-file-name=crtend.o; fi` `if [ -f ../gcc/crtn.o ]; then echo ../gcc/crtn.o; else ${CC} -print-file-name=crtn.o; fi`'
  NATIVE_LIB_DIRS='/usr/local/lib /usr/ccs/lib /lib /usr/lib'
  ;;

i[3456]86-*-sco* | i[3456]86-*-isc*)
  # In some configurations gcc does not use crtbegin.o and crtend.o.
  # In that case gcc -print-file-name=crtbegin.o will simply print
  # crtbegin.o.  We create dummy crtbegin.o and crtend.o files to
  # handle this.
  echo "int dummy_crtbegin () { return 0; }" > crtbegin.c
  ${CC} -c crtbegin.c -o crtbegin.o
  rm -f crtbegin.c
  echo "int dummy_crteng () { return 0; }" > crtend.c
  ${CC} -c crtend.c -o crtend.o
  rm -f crtend.c
  HOSTING_CRT0='/lib/crt1.o `if [ -f ../gcc/crtbegin.o ]; then echo ../gcc/crtbegin.o; else ${CC} -print-file-name=crtbegin.o; fi`'
  HOSTING_LIBS="$HOSTING_LIBS"' `if [ -f ../gcc/crtend.o ]; then echo ../gcc/crtend.o; else ${CC} -print-file-name=crtend.o; fi` /lib/crtn.o'
  ;;

i[3456]86-*-lynxos*)
  HOSTING_CRT0=/lib/init1.o
  HOSTING_LIBS="$HOSTING_LIBS"' -lm /lib/initn.o'
  ;;

i[3456]86-pc-interix*)
  HOSTING_CRT0='$$INTERIX_ROOT/usr/lib/crt0.o'
  NATIVE_LIB_DIRS='/usr/local/lib $$INTERIX_ROOT/usr/lib /lib /usr/lib'
  HOSTING_LIBS='-L $$X/local_bin -L $$INTERIX_ROOT/usr/lib '"$HOSTING_LIBS"' -lcpsx -lc -lcpsx $$INTERIX_ROOT/usr/lib/psxdll.a $$INTERIX_ROOT/usr/lib/psxdll2.a'
  ;;

i[3456]86-*-cygwin*)
  HOSTING_LIBS="$HOSTING_LIBS"' -lcygwin -luser32 -lkernel32 -ladvapi32 -lshell32 `if [ -f ../gcc/libgcc.a ] ; then echo ../gcc/libgcc.a ; else ${CC} -print-libgcc-file-name; fi`'
  ;;

i[3456]86-*-visopsys*)
  ;;

ia64-*-linux-gnu*)
  HOSTING_CRT0=`echo "$HOSTING_CRT0" | sed -e "s,ld\[^ \]*\*,ld-linux-ia64,g"`
  ;;

ia64-*-aix*)
  HOSTING_CRT0='-dynamic-linker `egrep "libc.so" \`${CC} --print-file-name=specs\` | sed -e "s,.*-dynamic-linker[ 	][ 	]*\(.*/libc.so..\).*,\1,"` `${CC} --print-file-name=crt1.o` `${CC} --print-file-name=crti.o` `if [ -f ../gcc/crtbegin.o ]; then echo ../gcc/crtbegin.o; else ${CC} --print-file-name=crtbegin.o; fi`'
  HOSTING_LIBS='-L`dirname \`${CC} --print-file-name=libc.so\`` '"$HOSTING_LIBS"' `if [ -f ../gcc/crtend.o ]; then echo ../gcc/crtend.o; else ${CC} --print-file-name=crtend.o; fi` `${CC} --print-file-name=crtn.o`'
  NATIVE_LIB_DIRS='/usr/local/lib /usr/lib/ia64l64 /lib /usr/lib'
  ;;

mips*-dec-bsd*)
  HOSTING_CRT0=/usr/lib/crt0.o
  ;;

mips*-sgi-irix4* | mips*-sgi-irix5*)
  HOSTING_CRT0=/usr/lib/crt1.o
  HOSTING_LIBS="$HOSTING_LIBS"' /usr/lib/crtn.o'
  ;;

mips*-sgi-irix6*)
  HOSTING_CRT0='/usr/lib32/crt1.o `if [ -f ../gcc/crtbegin.o ]; then echo ../gcc/crtbegin.o ; else ${CC} -print-file-name=crtbegin.o; fi`'
  HOSTING_LIBS='-L/usr/lib32 '"$HOSTING_LIBS"' `if [ -f ../gcc/crtend.o ]; then echo ../gcc/crtend.o ; else ${CC} -print-file-name=crtend.o; fi` /usr/lib32/crtn.o -init __do_global_ctors -fini __do_global_dtors'
  ;;

mips*-*-linux-gnu*)
  HOSTING_CRT0=`echo "$HOSTING_CRT0" | sed -e "s,\\\`egrep.*\"\\\`,/lib/ld.so.1,"`
  ;;

m68*-*-linux-gnu*)
  HOSTING_CRT0=`echo "$HOSTING_CRT0" | sed -e "s,\\\`egrep.*\"\\\`,/lib/ld.so.1,"`
  ;;

m68*-*-lynxos*)
  HOSTING_CRT0=/lib/init1.o
  HOSTING_LIBS="$HOSTING_LIBS"' -lm /lib/initn.o'
  ;;

m68*-motorola-sysv)
  HOSTING_CRT0='`if [ -f ../gcc/crt0.o ]; then echo ../gcc/crt0.o; elif [ -f \`${CC} -print-file-name=\`crt0.o ]; then echo \`${CC} -print-file-name=\`crt0.o; else echo /lib/crt0.o; fi`'
  HOSTING_LIBS=`echo "$HOSTING_LIBS" | sed -e "s,-lc,-lc881,"`
  ;;

m68*-sun-*)
  HOSTING_CRT0='/usr/lib/crt0.o /usr/lib/Fcrt1.o -L/usr/lib/fsoft.o'
  ;;

m88*-*-dgux*)
  HDEFINES=-D__using_DGUX
  HOSTING_CRT0='/lib/crt0.o -X'
  HOSTING_LIBS=/usr/sde/m88kbcs/lib/libc.a
  ;;

m88*-motorola-sysv3)
  HOSTING_CRT0='/lib/crt0.o `if [ -f ../gcc/crtbegin.o ]; then echo ../gcc/crtbegin.o; else ${CC} -print-file-name=crtbegin.o; fi`'
  HOSTING_LIBS="$HOSTING_LIBS"' `if [ -f ../gcc/crtend.o ]; then echo ../gcc/crtend.o; else ${CC} -print-file-name=crtend.o; fi`'
  ;;

powerpc*-*-linux-gnu*)
  HOSTING_CRT0=`echo "$HOSTING_CRT0" | sed -e "s,\\\`egrep.*\"\\\`,/lib/ld.so.1,"`
  ;;

s390x-*-linux-gnu*)
  HOSTING_CRT0=`echo "$HOSTING_CRT0" | sed -e "s,\\\`egrep.*\"\\\`,/lib/ld64.so.1,"`
  ;;

s390-*-linux-gnu*)
  HOSTING_CRT0=`echo "$HOSTING_CRT0" | sed -e "s,\\\`egrep.*\"\\\`,/lib/ld.so.1,"`
  ;;

sparc*-*-solaris2*)
  HOSTING_CRT0='`if [ -f ../gcc/crt1.o ]; then echo ../gcc/crt1.o; else ${CC} -print-file-name=crt1.o; fi` `if [ -f ../gcc/crti.o ]; then echo ../gcc/crti.o; else ${CC} -print-file-name=crti.o; fi` /usr/ccs/lib/values-Xa.o `if [ -f ../gcc/crtbegin.o ]; then echo ../gcc/crtbegin.o; else ${CC} -print-file-name=crtbegin.o; fi`'
  HOSTING_LIBS="$HOSTING_LIBS"' `if [ -f ../gcc/crtend.o ]; then echo ../gcc/crtend.o; else ${CC} -print-file-name=crtend.o; fi` `if [ -f ../gcc/crtn.o ]; then echo ../gcc/crtn.o; else ${CC} -print-file-name=crtn.o; fi`'
  NATIVE_LIB_DIRS='/usr/local/lib /usr/ccs/lib /lib /usr/lib'
  ;;

sparc-*-linux-gnu*)
  HOSTING_CRT0=`echo "$HOSTING_CRT0" | sed -e "s,\\\`egrep.*\"\\\`,/lib/ld-linux.so.2,"`
  ;;

sparc64-*-linux-gnu*)
  HOSTING_CRT0=`echo "$HOSTING_CRT0" | sed -e "s,\\\`egrep.*\"\\\`,/lib64/ld-linux.so.2,"`
  ;;

x86_64-*-linux-gnu*)
  HOSTING_CRT0=`echo "$HOSTING_CRT0" | sed -e "s,\\\`egrep.*\"\\\`,/lib64/ld-linux-x86-64.so.2,"`
  ;;

*-*-freebsd*)
  ;;

*-*-linux*)
  ;;

*-*-netbsd*)
  # NetBSD typically does not use the GCC crtstuff, so ignore it.
  HOSTING_CRT0='-dynamic-linker /usr/libexec/ld.elf_so /usr/lib/crt0.o /usr/lib/crtbegin.o'
  HOSTING_LIBS='`if [ -f ../gcc/libgcc.a ] ; then echo ../gcc/libgcc.a ; else ${CC} -print-libgcc-file-name; fi` -lc `if [ -f ../gcc/libgcc.a ] ; then echo ../gcc/libgcc.a ; else ${CC} -print-libgcc-file-name; fi` /usr/lib/crtend.o'
  ;;

alpha*-*-*)
  HOSTING_CRT0=/usr/ccs/lib/crt0.o
  NATIVE_LIB_DIRS='/usr/local/lib /usr/ccs/lib /lib /usr/lib'
  ;;

esac