1 | #! /dev/null |
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2 | # Don't call it directly. This shell script fragment is called to |
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3 | # determine: |
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4 | # |
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5 | # 1. libstcxx_interface: the interface name for libstdc++. |
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6 | # 2. cxx_interface: the interface name for c++. |
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7 | # 3. libc_interface: the interface name for libc. |
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8 | # |
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9 | |
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10 | # Get the top level src dir. |
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11 | if [ -z "${topsrcdir}" -a -z "${top_srcdir}" ] |
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12 | then |
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13 | echo "Undefined top level src dir: topsrcdir and top_srcdir are empty" >&2 |
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14 | exit 1 |
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15 | fi |
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16 | |
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17 | if [ -n "${topsrcdir}" ] |
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18 | then |
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19 | if_topsrcdir=${topsrcdir} |
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20 | else |
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21 | if_topsrcdir=${top_srcdir} |
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22 | fi |
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23 | |
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24 | if [ "${enable_libstdcxx_v3}" = "yes" ] ; then |
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25 | libstdcxx_srcdir=${if_topsrcdir}/libstdc++-v3 |
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26 | else |
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27 | libstdcxx_srcdir=${if_topsrcdir}/libstdc++ |
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28 | fi |
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29 | |
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30 | if [ -f ${libstdcxx_srcdir}/Makefile.in ]; then |
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31 | # We check libstdc++ for libstdcxx_interface. |
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32 | libstdcxx_interface=`grep "^INTERFACE" ${libstdcxx_srcdir}/Makefile.in | sed 's/INTERFACE[ ]*=[ ]*\(.*\)/\1/'` |
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33 | else |
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34 | libstdcxx_interface= |
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35 | fi |
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36 | |
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37 | if [ -f ${if_topsrcdir}/gcc/cp/Makefile.in ]; then |
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38 | # We check gcc/cp for cxx_interface. |
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39 | cxx_interface=`grep "^INTERFACE" ${if_topsrcdir}/gcc/cp/Makefile.in | sed 's/INTERFACE[ ]*=[ ]*\(.*\)/\1/'` |
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40 | else |
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41 | cxx_interface= |
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42 | fi |
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43 | |
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44 | # The trickiest part is libc_interface. |
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45 | if [ -z "${libc_interface}" ] |
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46 | then |
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47 | case ${target_os} in |
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48 | *linux*libc1*|*linux*libc5*) |
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49 | case ${target_alias} in |
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50 | *alpha*|*powerpc*) |
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51 | libc_interface=-libc5.9- |
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52 | ;; |
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53 | *) |
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54 | libc_interface=-libc5- |
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55 | ;; |
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56 | esac |
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57 | ;; |
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58 | *linux*gnu*) |
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59 | # We have to work harder to figure it out. |
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60 | if [ ${target_alias} = ${build_alias} ] |
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61 | then |
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62 | dummy=if$$ |
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63 | cat >$dummy.c <<EOF |
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64 | #include <features.h> |
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65 | main(argc, argv) |
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66 | int argc; |
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67 | char *argv[]; |
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68 | { |
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69 | printf("%d\n", __GLIBC_MINOR__); |
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70 | return 0; |
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71 | } |
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72 | EOF |
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73 | ${CC-cc} $dummy.c -o $dummy 2>/dev/null |
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74 | if [ "$?" = 0 ] |
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75 | then |
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76 | libc_interface=-libc6.`./$dummy`- |
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77 | rm -f $dummy.c $dummy |
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78 | else |
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79 | # It should never happen. |
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80 | echo "Cannot find the GNU C library minor version number." >&2 |
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81 | rm -f $dummy.c $dummy |
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82 | exit 1 |
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83 | fi |
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84 | else |
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85 | # Cross compiling. Assume glibc 2.1. |
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86 | libc_interface=-libc6.1- |
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87 | fi |
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88 | ;; |
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89 | *) |
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90 | libc_interface=- |
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91 | ;; |
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92 | esac |
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93 | fi |
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