1 | #!/bin/sh |
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2 | # configure script for zlib. This script is needed only if |
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3 | # you wish to build a shared library and your system supports them, |
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4 | # of if you need special compiler, flags or install directory. |
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5 | # Otherwise, you can just use directly "make test; make install" |
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6 | # |
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7 | # To create a shared library, use "configure --shared"; by default a static |
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8 | # library is created. If the primitive shared library support provided here |
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9 | # does not work, use ftp://prep.ai.mit.edu/pub/gnu/libtool-*.tar.gz |
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10 | # |
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11 | # To impose specific compiler or flags or install directory, use for example: |
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12 | # prefix=$HOME CC=cc CFLAGS="-O4" ./configure |
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13 | # or for csh/tcsh users: |
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14 | # (setenv prefix $HOME; setenv CC cc; setenv CFLAGS "-O4"; ./configure) |
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15 | # LDSHARED is the command to be used to create a shared library |
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16 | |
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17 | # Incorrect settings of CC or CFLAGS may prevent creating a shared library. |
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18 | # If you have problems, try without defining CC and CFLAGS before reporting |
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19 | # an error. |
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20 | |
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21 | LIBS=libz.a |
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22 | LDFLAGS="-L. ${LIBS}" |
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23 | VER=`sed -n -e '/VERSION "/s/.*"\(.*\)".*/\1/p' < zlib.h` |
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24 | VER2=`sed -n -e '/VERSION "/s/.*"\([0-9]*\\.[0-9]*\)\\..*/\1/p' < zlib.h` |
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25 | VER1=`sed -n -e '/VERSION "/s/.*"\([0-9]*\)\\..*/\1/p' < zlib.h` |
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26 | AR=${AR-"ar rc"} |
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27 | RANLIB=${RANLIB-"ranlib"} |
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28 | prefix=${prefix-/usr/local} |
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29 | exec_prefix=${exec_prefix-'${prefix}'} |
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30 | libdir=${libdir-'${exec_prefix}/lib'} |
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31 | includedir=${includedir-'${prefix}/include'} |
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32 | mandir=${mandir-'${prefix}/share/man'} |
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33 | shared_ext='.so' |
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34 | shared=0 |
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35 | gcc=0 |
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36 | old_cc="$CC" |
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37 | old_cflags="$CFLAGS" |
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38 | |
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39 | while test $# -ge 1 |
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40 | do |
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41 | case "$1" in |
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42 | -h* | --h*) |
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43 | echo 'usage:' |
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44 | echo ' configure [--shared] [--prefix=PREFIX] [--exec_prefix=EXPREFIX]' |
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45 | echo ' [--libdir=LIBDIR] [--includedir=INCLUDEDIR]' |
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46 | exit 0;; |
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47 | -p*=* | --p*=*) prefix=`echo $1 | sed 's/[-a-z_]*=//'`; shift;; |
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48 | -e*=* | --e*=*) exec_prefix=`echo $1 | sed 's/[-a-z_]*=//'`; shift;; |
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49 | -l*=* | --libdir=*) libdir=`echo $1 | sed 's/[-a-z_]*=//'`; shift;; |
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50 | -i*=* | --includedir=*) includedir=`echo $1 | sed 's/[-a-z_]*=//'`;shift;; |
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51 | -p* | --p*) prefix="$2"; shift; shift;; |
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52 | -e* | --e*) exec_prefix="$2"; shift; shift;; |
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53 | -l* | --l*) libdir="$2"; shift; shift;; |
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54 | -i* | --i*) includedir="$2"; shift; shift;; |
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55 | -s* | --s*) shared=1; shift;; |
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56 | *) echo "unknown option: $1"; echo "$0 --help for help"; exit 1;; |
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57 | esac |
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58 | done |
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59 | |
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60 | test=ztest$$ |
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61 | cat > $test.c <<EOF |
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62 | extern int getchar(); |
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63 | int hello() {return getchar();} |
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64 | EOF |
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65 | |
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66 | test -z "$CC" && echo Checking for gcc... |
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67 | cc=${CC-gcc} |
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68 | cflags=${CFLAGS-"-O3"} |
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69 | # to force the asm version use: CFLAGS="-O3 -DASMV" ./configure |
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70 | case "$cc" in |
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71 | *gcc*) gcc=1;; |
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72 | esac |
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73 | |
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74 | if test "$gcc" -eq 1 && ($cc -c $cflags $test.c) 2>/dev/null; then |
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75 | CC="$cc" |
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76 | SFLAGS=${CFLAGS-"-fPIC -O3"} |
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77 | CFLAGS="$cflags" |
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78 | case `(uname -s || echo unknown) 2>/dev/null` in |
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79 | Linux | linux | GNU | GNU/*) LDSHARED=${LDSHARED-"$cc -shared -Wl,-soname,libz.so.1"};; |
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80 | CYGWIN* | Cygwin* | cygwin* | OS/2* ) |
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81 | EXE='.exe';; |
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82 | QNX*) # This is for QNX6. I suppose that the QNX rule below is for QNX2,QNX4 |
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83 | # (alain.bonnefoy@icbt.com) |
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84 | LDSHARED=${LDSHARED-"$cc -shared -Wl,-hlibz.so.1"};; |
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85 | HP-UX*) |
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86 | LDSHARED=${LDSHARED-"$cc -shared $SFLAGS"} |
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87 | case `(uname -m || echo unknown) 2>/dev/null` in |
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88 | ia64) |
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89 | shared_ext='.so' |
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90 | SHAREDLIB='libz.so';; |
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91 | *) |
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92 | shared_ext='.sl' |
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93 | SHAREDLIB='libz.sl';; |
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94 | esac;; |
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95 | Darwin*) shared_ext='.dylib' |
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96 | SHAREDLIB=libz$shared_ext |
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97 | SHAREDLIBV=libz.$VER$shared_ext |
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98 | SHAREDLIBM=libz.$VER1$shared_ext |
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99 | LDSHARED=${LDSHARED-"$cc -dynamiclib -install_name $libdir/$SHAREDLIBM -compatibility_version $VER1 -current_version $VER"};; |
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100 | *) LDSHARED=${LDSHARED-"$cc -shared"};; |
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101 | esac |
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102 | else |
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103 | # find system name and corresponding cc options |
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104 | CC=${CC-cc} |
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105 | case `(uname -sr || echo unknown) 2>/dev/null` in |
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106 | HP-UX*) SFLAGS=${CFLAGS-"-O +z"} |
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107 | CFLAGS=${CFLAGS-"-O"} |
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108 | # LDSHARED=${LDSHARED-"ld -b +vnocompatwarnings"} |
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109 | LDSHARED=${LDSHARED-"ld -b"} |
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110 | case `(uname -m || echo unknown) 2>/dev/null` in |
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111 | ia64) |
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112 | shared_ext='.so' |
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113 | SHAREDLIB='libz.so';; |
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114 | *) |
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115 | shared_ext='.sl' |
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116 | SHAREDLIB='libz.sl';; |
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117 | esac;; |
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118 | IRIX*) SFLAGS=${CFLAGS-"-ansi -O2 -rpath ."} |
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119 | CFLAGS=${CFLAGS-"-ansi -O2"} |
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120 | LDSHARED=${LDSHARED-"cc -shared"};; |
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121 | OSF1\ V4*) SFLAGS=${CFLAGS-"-O -std1"} |
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122 | CFLAGS=${CFLAGS-"-O -std1"} |
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123 | LDSHARED=${LDSHARED-"cc -shared -Wl,-soname,libz.so -Wl,-msym -Wl,-rpath,$(libdir) -Wl,-set_version,${VER}:1.0"};; |
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124 | OSF1*) SFLAGS=${CFLAGS-"-O -std1"} |
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125 | CFLAGS=${CFLAGS-"-O -std1"} |
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126 | LDSHARED=${LDSHARED-"cc -shared"};; |
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127 | QNX*) SFLAGS=${CFLAGS-"-4 -O"} |
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128 | CFLAGS=${CFLAGS-"-4 -O"} |
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129 | LDSHARED=${LDSHARED-"cc"} |
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130 | RANLIB=${RANLIB-"true"} |
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131 | AR="cc -A";; |
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132 | SCO_SV\ 3.2*) SFLAGS=${CFLAGS-"-O3 -dy -KPIC "} |
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133 | CFLAGS=${CFLAGS-"-O3"} |
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134 | LDSHARED=${LDSHARED-"cc -dy -KPIC -G"};; |
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135 | SunOS\ 5*) SFLAGS=${CFLAGS-"-fast -xcg89 -KPIC -R."} |
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136 | CFLAGS=${CFLAGS-"-fast -xcg89"} |
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137 | LDSHARED=${LDSHARED-"cc -G"};; |
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138 | SunOS\ 4*) SFLAGS=${CFLAGS-"-O2 -PIC"} |
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139 | CFLAGS=${CFLAGS-"-O2"} |
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140 | LDSHARED=${LDSHARED-"ld"};; |
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141 | SunStudio\ 9*) SFLAGS=${CFLAGS-"-DUSE_MMAP -fast -xcode=pic32 -xtarget=ultra3 -xarch=v9b"} |
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142 | CFLAGS=${CFLAGS-"-DUSE_MMAP -fast -xtarget=ultra3 -xarch=v9b"} |
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143 | LDSHARED=${LDSHARED-"cc -xarch=v9b"};; |
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144 | UNIX_System_V\ 4.2.0) |
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145 | SFLAGS=${CFLAGS-"-KPIC -O"} |
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146 | CFLAGS=${CFLAGS-"-O"} |
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147 | LDSHARED=${LDSHARED-"cc -G"};; |
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148 | UNIX_SV\ 4.2MP) |
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149 | SFLAGS=${CFLAGS-"-Kconform_pic -O"} |
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150 | CFLAGS=${CFLAGS-"-O"} |
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151 | LDSHARED=${LDSHARED-"cc -G"};; |
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152 | OpenUNIX\ 5) |
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153 | SFLAGS=${CFLAGS-"-KPIC -O"} |
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154 | CFLAGS=${CFLAGS-"-O"} |
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155 | LDSHARED=${LDSHARED-"cc -G"};; |
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156 | AIX*) # Courtesy of dbakker@arrayasolutions.com |
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157 | SFLAGS=${CFLAGS-"-O -qmaxmem=8192"} |
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158 | CFLAGS=${CFLAGS-"-O -qmaxmem=8192"} |
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159 | LDSHARED=${LDSHARED-"xlc -G"};; |
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160 | # send working options for other systems to support@gzip.org |
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161 | *) SFLAGS=${CFLAGS-"-O"} |
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162 | CFLAGS=${CFLAGS-"-O"} |
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163 | LDSHARED=${LDSHARED-"cc -shared"};; |
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164 | esac |
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165 | fi |
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166 | |
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167 | SHAREDLIB=${SHAREDLIB-"libz$shared_ext"} |
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168 | SHAREDLIBV=${SHAREDLIBV-"libz$shared_ext.$VER"} |
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169 | SHAREDLIBM=${SHAREDLIBM-"libz$shared_ext.$VER1"} |
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170 | |
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171 | if test $shared -eq 1; then |
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172 | echo Checking for shared library support... |
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173 | # we must test in two steps (cc then ld), required at least on SunOS 4.x |
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174 | if test "`($CC -c $SFLAGS $test.c) 2>&1`" = "" && |
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175 | test "`($LDSHARED -o $test$shared_ext $test.o) 2>&1`" = ""; then |
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176 | CFLAGS="$SFLAGS" |
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177 | LIBS="$SHAREDLIBV" |
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178 | echo Building shared library $SHAREDLIBV with $CC. |
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179 | elif test -z "$old_cc" -a -z "$old_cflags"; then |
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180 | echo No shared library support. |
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181 | shared=0; |
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182 | else |
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183 | echo 'No shared library support; try without defining CC and CFLAGS' |
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184 | shared=0; |
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185 | fi |
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186 | fi |
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187 | if test $shared -eq 0; then |
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188 | LDSHARED="$CC" |
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189 | echo Building static library $LIBS version $VER with $CC. |
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190 | else |
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191 | LDFLAGS="-L. ${SHAREDLIBV}" |
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192 | fi |
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193 | |
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194 | cat > $test.c <<EOF |
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195 | #include <unistd.h> |
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196 | int main() { return 0; } |
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197 | EOF |
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198 | if test "`($CC -c $CFLAGS $test.c) 2>&1`" = ""; then |
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199 | sed < zconf.in.h "/HAVE_UNISTD_H/s%0%1%" > zconf.h |
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200 | echo "Checking for unistd.h... Yes." |
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201 | else |
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202 | cp -p zconf.in.h zconf.h |
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203 | echo "Checking for unistd.h... No." |
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204 | fi |
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205 | |
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206 | cat > $test.c <<EOF |
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207 | #include <stdio.h> |
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208 | #include <stdarg.h> |
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209 | #include "zconf.h" |
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210 | |
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211 | int main() |
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212 | { |
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213 | #ifndef STDC |
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214 | choke me |
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215 | #endif |
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216 | |
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217 | return 0; |
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218 | } |
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219 | EOF |
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220 | |
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221 | if test "`($CC -c $CFLAGS $test.c) 2>&1`" = ""; then |
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222 | echo "Checking whether to use vs[n]printf() or s[n]printf()... using vs[n]printf()" |
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223 | |
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224 | cat > $test.c <<EOF |
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225 | #include <stdio.h> |
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226 | #include <stdarg.h> |
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227 | |
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228 | int mytest(char *fmt, ...) |
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229 | { |
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230 | char buf[20]; |
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231 | va_list ap; |
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232 | |
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233 | va_start(ap, fmt); |
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234 | vsnprintf(buf, sizeof(buf), fmt, ap); |
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235 | va_end(ap); |
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236 | return 0; |
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237 | } |
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238 | |
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239 | int main() |
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240 | { |
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241 | return (mytest("Hello%d\n", 1)); |
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242 | } |
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243 | EOF |
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244 | |
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245 | if test "`($CC $CFLAGS -o $test $test.c) 2>&1`" = ""; then |
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246 | echo "Checking for vsnprintf() in stdio.h... Yes." |
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247 | |
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248 | cat >$test.c <<EOF |
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249 | #include <stdio.h> |
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250 | #include <stdarg.h> |
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251 | |
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252 | int mytest(char *fmt, ...) |
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253 | { |
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254 | int n; |
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255 | char buf[20]; |
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256 | va_list ap; |
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257 | |
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258 | va_start(ap, fmt); |
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259 | n = vsnprintf(buf, sizeof(buf), fmt, ap); |
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260 | va_end(ap); |
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261 | return n; |
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262 | } |
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263 | |
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264 | int main() |
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265 | { |
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266 | return (mytest("Hello%d\n", 1)); |
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267 | } |
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268 | EOF |
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269 | |
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270 | if test "`($CC -c $CFLAGS $test.c) 2>&1`" = ""; then |
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271 | echo "Checking for return value of vsnprintf()... Yes." |
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272 | else |
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273 | CFLAGS="$CFLAGS -DHAS_vsnprintf_void" |
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274 | echo "Checking for return value of vsnprintf()... No." |
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275 | echo " WARNING: apparently vsnprintf() does not return a value. zlib" |
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276 | echo " can build but will be open to possible string-format security" |
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277 | echo " vulnerabilities." |
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278 | fi |
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279 | else |
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280 | CFLAGS="$CFLAGS -DNO_vsnprintf" |
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281 | echo "Checking for vsnprintf() in stdio.h... No." |
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282 | echo " WARNING: vsnprintf() not found, falling back to vsprintf(). zlib" |
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283 | echo " can build but will be open to possible buffer-overflow security" |
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284 | echo " vulnerabilities." |
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285 | |
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286 | cat >$test.c <<EOF |
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287 | #include <stdio.h> |
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288 | #include <stdarg.h> |
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289 | |
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290 | int mytest(char *fmt, ...) |
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291 | { |
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292 | int n; |
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293 | char buf[20]; |
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294 | va_list ap; |
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295 | |
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296 | va_start(ap, fmt); |
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297 | n = vsprintf(buf, fmt, ap); |
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298 | va_end(ap); |
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299 | return n; |
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300 | } |
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301 | |
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302 | int main() |
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303 | { |
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304 | return (mytest("Hello%d\n", 1)); |
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305 | } |
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306 | EOF |
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307 | |
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308 | if test "`($CC -c $CFLAGS $test.c) 2>&1`" = ""; then |
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309 | echo "Checking for return value of vsprintf()... Yes." |
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310 | else |
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311 | CFLAGS="$CFLAGS -DHAS_vsprintf_void" |
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312 | echo "Checking for return value of vsprintf()... No." |
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313 | echo " WARNING: apparently vsprintf() does not return a value. zlib" |
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314 | echo " can build but will be open to possible string-format security" |
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315 | echo " vulnerabilities." |
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316 | fi |
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317 | fi |
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318 | else |
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319 | echo "Checking whether to use vs[n]printf() or s[n]printf()... using s[n]printf()" |
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320 | |
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321 | cat >$test.c <<EOF |
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322 | #include <stdio.h> |
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323 | |
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324 | int mytest() |
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325 | { |
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326 | char buf[20]; |
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327 | |
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328 | snprintf(buf, sizeof(buf), "%s", "foo"); |
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329 | return 0; |
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330 | } |
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331 | |
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332 | int main() |
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333 | { |
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334 | return (mytest()); |
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335 | } |
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336 | EOF |
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337 | |
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338 | if test "`($CC $CFLAGS -o $test $test.c) 2>&1`" = ""; then |
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339 | echo "Checking for snprintf() in stdio.h... Yes." |
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340 | |
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341 | cat >$test.c <<EOF |
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342 | #include <stdio.h> |
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343 | |
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344 | int mytest() |
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345 | { |
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346 | char buf[20]; |
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347 | |
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348 | return snprintf(buf, sizeof(buf), "%s", "foo"); |
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349 | } |
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350 | |
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351 | int main() |
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352 | { |
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353 | return (mytest()); |
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354 | } |
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355 | EOF |
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356 | |
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357 | if test "`($CC -c $CFLAGS $test.c) 2>&1`" = ""; then |
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358 | echo "Checking for return value of snprintf()... Yes." |
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359 | else |
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360 | CFLAGS="$CFLAGS -DHAS_snprintf_void" |
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361 | echo "Checking for return value of snprintf()... No." |
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362 | echo " WARNING: apparently snprintf() does not return a value. zlib" |
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363 | echo " can build but will be open to possible string-format security" |
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364 | echo " vulnerabilities." |
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365 | fi |
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366 | else |
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367 | CFLAGS="$CFLAGS -DNO_snprintf" |
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368 | echo "Checking for snprintf() in stdio.h... No." |
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369 | echo " WARNING: snprintf() not found, falling back to sprintf(). zlib" |
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370 | echo " can build but will be open to possible buffer-overflow security" |
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371 | echo " vulnerabilities." |
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372 | |
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373 | cat >$test.c <<EOF |
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374 | #include <stdio.h> |
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375 | |
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376 | int mytest() |
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377 | { |
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378 | char buf[20]; |
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379 | |
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380 | return sprintf(buf, "%s", "foo"); |
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381 | } |
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382 | |
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383 | int main() |
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384 | { |
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385 | return (mytest()); |
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386 | } |
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387 | EOF |
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388 | |
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389 | if test "`($CC -c $CFLAGS $test.c) 2>&1`" = ""; then |
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390 | echo "Checking for return value of sprintf()... Yes." |
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391 | else |
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392 | CFLAGS="$CFLAGS -DHAS_sprintf_void" |
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393 | echo "Checking for return value of sprintf()... No." |
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394 | echo " WARNING: apparently sprintf() does not return a value. zlib" |
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395 | echo " can build but will be open to possible string-format security" |
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396 | echo " vulnerabilities." |
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397 | fi |
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398 | fi |
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399 | fi |
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400 | |
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401 | cat >$test.c <<EOF |
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402 | #include <errno.h> |
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403 | int main() { return 0; } |
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404 | EOF |
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405 | if test "`($CC -c $CFLAGS $test.c) 2>&1`" = ""; then |
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406 | echo "Checking for errno.h... Yes." |
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407 | else |
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408 | echo "Checking for errno.h... No." |
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409 | CFLAGS="$CFLAGS -DNO_ERRNO_H" |
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410 | fi |
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411 | |
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412 | cat > $test.c <<EOF |
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413 | #include <sys/types.h> |
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414 | #include <sys/mman.h> |
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415 | #include <sys/stat.h> |
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416 | caddr_t hello() { |
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417 | return mmap((caddr_t)0, (off_t)0, PROT_READ, MAP_SHARED, 0, (off_t)0); |
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418 | } |
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419 | EOF |
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420 | if test "`($CC -c $CFLAGS $test.c) 2>&1`" = ""; then |
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421 | CFLAGS="$CFLAGS -DUSE_MMAP" |
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422 | echo Checking for mmap support... Yes. |
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423 | else |
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424 | echo Checking for mmap support... No. |
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425 | fi |
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426 | |
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427 | CPP=${CPP-"$CC -E"} |
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428 | case $CFLAGS in |
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429 | *ASMV*) |
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430 | if test "`nm $test.o | grep _hello`" = ""; then |
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431 | CPP="$CPP -DNO_UNDERLINE" |
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432 | echo Checking for underline in external names... No. |
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433 | else |
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434 | echo Checking for underline in external names... Yes. |
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435 | fi;; |
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436 | esac |
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437 | |
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438 | rm -f $test.[co] $test $test$shared_ext |
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439 | |
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440 | # udpate Makefile |
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441 | sed < Makefile.in " |
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442 | /^CC *=/s#=.*#=$CC# |
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443 | /^CFLAGS *=/s#=.*#=$CFLAGS# |
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444 | /^CPP *=/s#=.*#=$CPP# |
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445 | /^LDSHARED *=/s#=.*#=$LDSHARED# |
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446 | /^LIBS *=/s#=.*#=$LIBS# |
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447 | /^SHAREDLIB *=/s#=.*#=$SHAREDLIB# |
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448 | /^SHAREDLIBV *=/s#=.*#=$SHAREDLIBV# |
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449 | /^SHAREDLIBM *=/s#=.*#=$SHAREDLIBM# |
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450 | /^AR *=/s#=.*#=$AR# |
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451 | /^RANLIB *=/s#=.*#=$RANLIB# |
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452 | /^EXE *=/s#=.*#=$EXE# |
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453 | /^prefix *=/s#=.*#=$prefix# |
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454 | /^exec_prefix *=/s#=.*#=$exec_prefix# |
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455 | /^libdir *=/s#=.*#=$libdir# |
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456 | /^includedir *=/s#=.*#=$includedir# |
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457 | /^mandir *=/s#=.*#=$mandir# |
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458 | /^LDFLAGS *=/s#=.*#=$LDFLAGS# |
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459 | " > Makefile |
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