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*) LDSHARED=${LDSHARED-"$cc -shared $SFLAGS"} |
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86 | shared_ext='.sl' |
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87 | SHAREDLIB='libz.sl';; |
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88 | Darwin*) shared_ext='.dylib' |
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89 | SHAREDLIB=libz$shared_ext |
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90 | SHAREDLIBV=libz.$VER$shared_ext |
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91 | SHAREDLIBM=libz.$VER1$shared_ext |
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92 | LDSHARED=${LDSHARED-"$cc -dynamiclib -install_name $libdir/$SHAREDLIBM -compatibility_version $VER1 -current_version $VER"};; |
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93 | *) LDSHARED=${LDSHARED-"$cc -shared"};; |
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94 | esac |
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95 | else |
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96 | # find system name and corresponding cc options |
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97 | CC=${CC-cc} |
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98 | case `(uname -sr || echo unknown) 2>/dev/null` in |
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99 | HP-UX*) SFLAGS=${CFLAGS-"-O +z"} |
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100 | CFLAGS=${CFLAGS-"-O"} |
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101 | # LDSHARED=${LDSHARED-"ld -b +vnocompatwarnings"} |
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102 | LDSHARED=${LDSHARED-"ld -b"} |
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103 | shared_ext='.sl' |
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104 | SHAREDLIB='libz.sl';; |
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105 | IRIX*) SFLAGS=${CFLAGS-"-ansi -O2 -rpath ."} |
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106 | CFLAGS=${CFLAGS-"-ansi -O2"} |
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107 | LDSHARED=${LDSHARED-"cc -shared"};; |
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108 | OSF1\ V4*) SFLAGS=${CFLAGS-"-O -std1"} |
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109 | CFLAGS=${CFLAGS-"-O -std1"} |
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110 | LDSHARED=${LDSHARED-"cc -shared -Wl,-soname,libz.so -Wl,-msym -Wl,-rpath,$(libdir) -Wl,-set_version,${VER}:1.0"};; |
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111 | OSF1*) SFLAGS=${CFLAGS-"-O -std1"} |
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112 | CFLAGS=${CFLAGS-"-O -std1"} |
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113 | LDSHARED=${LDSHARED-"cc -shared"};; |
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114 | QNX*) SFLAGS=${CFLAGS-"-4 -O"} |
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115 | CFLAGS=${CFLAGS-"-4 -O"} |
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116 | LDSHARED=${LDSHARED-"cc"} |
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117 | RANLIB=${RANLIB-"true"} |
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118 | AR="cc -A";; |
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119 | SCO_SV\ 3.2*) SFLAGS=${CFLAGS-"-O3 -dy -KPIC "} |
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120 | CFLAGS=${CFLAGS-"-O3"} |
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121 | LDSHARED=${LDSHARED-"cc -dy -KPIC -G"};; |
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122 | SunOS\ 5*) SFLAGS=${CFLAGS-"-fast -xcg89 -KPIC -R."} |
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123 | CFLAGS=${CFLAGS-"-fast -xcg89"} |
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124 | LDSHARED=${LDSHARED-"cc -G"};; |
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125 | SunOS\ 4*) SFLAGS=${CFLAGS-"-O2 -PIC"} |
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126 | CFLAGS=${CFLAGS-"-O2"} |
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127 | LDSHARED=${LDSHARED-"ld"};; |
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128 | SunStudio\ 9*) SFLAGS=${CFLAGS-"-DUSE_MMAP -fast -xcode=pic32 -xtarget=ultra3 -xarch=v9b"} |
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129 | CFLAGS=${CFLAGS-"-DUSE_MMAP -fast -xtarget=ultra3 -xarch=v9b"} |
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130 | LDSHARED=${LDSHARED-"cc -xarch=v9b"};; |
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131 | UNIX_System_V\ 4.2.0) |
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132 | SFLAGS=${CFLAGS-"-KPIC -O"} |
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133 | CFLAGS=${CFLAGS-"-O"} |
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134 | LDSHARED=${LDSHARED-"cc -G"};; |
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135 | UNIX_SV\ 4.2MP) |
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136 | SFLAGS=${CFLAGS-"-Kconform_pic -O"} |
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137 | CFLAGS=${CFLAGS-"-O"} |
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138 | LDSHARED=${LDSHARED-"cc -G"};; |
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139 | OpenUNIX\ 5) |
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140 | SFLAGS=${CFLAGS-"-KPIC -O"} |
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141 | CFLAGS=${CFLAGS-"-O"} |
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142 | LDSHARED=${LDSHARED-"cc -G"};; |
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143 | AIX*) # Courtesy of dbakker@arrayasolutions.com |
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144 | SFLAGS=${CFLAGS-"-O -qmaxmem=8192"} |
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145 | CFLAGS=${CFLAGS-"-O -qmaxmem=8192"} |
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146 | LDSHARED=${LDSHARED-"xlc -G"};; |
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147 | # send working options for other systems to support@gzip.org |
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148 | *) SFLAGS=${CFLAGS-"-O"} |
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149 | CFLAGS=${CFLAGS-"-O"} |
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150 | LDSHARED=${LDSHARED-"cc -shared"};; |
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151 | esac |
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152 | fi |
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153 | |
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154 | SHAREDLIB=${SHAREDLIB-"libz$shared_ext"} |
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155 | SHAREDLIBV=${SHAREDLIBV-"libz$shared_ext.$VER"} |
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156 | SHAREDLIBM=${SHAREDLIBM-"libz$shared_ext.$VER1"} |
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157 | |
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158 | if test $shared -eq 1; then |
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159 | echo Checking for shared library support... |
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160 | # we must test in two steps (cc then ld), required at least on SunOS 4.x |
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161 | if test "`($CC -c $SFLAGS $test.c) 2>&1`" = "" && |
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162 | test "`($LDSHARED -o $test$shared_ext $test.o) 2>&1`" = ""; then |
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163 | CFLAGS="$SFLAGS" |
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164 | LIBS="$SHAREDLIBV" |
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165 | echo Building shared library $SHAREDLIBV with $CC. |
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166 | elif test -z "$old_cc" -a -z "$old_cflags"; then |
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167 | echo No shared library support. |
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168 | shared=0; |
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169 | else |
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170 | echo 'No shared library support; try without defining CC and CFLAGS' |
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171 | shared=0; |
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172 | fi |
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173 | fi |
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174 | if test $shared -eq 0; then |
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175 | LDSHARED="$CC" |
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176 | echo Building static library $LIBS version $VER with $CC. |
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177 | else |
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178 | LDFLAGS="-L. ${SHAREDLIBV}" |
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179 | fi |
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180 | |
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181 | cat > $test.c <<EOF |
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182 | #include <unistd.h> |
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183 | int main() { return 0; } |
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184 | EOF |
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185 | if test "`($CC -c $CFLAGS $test.c) 2>&1`" = ""; then |
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186 | sed < zconf.in.h "/HAVE_UNISTD_H/s%0%1%" > zconf.h |
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187 | echo "Checking for unistd.h... Yes." |
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188 | else |
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189 | cp -p zconf.in.h zconf.h |
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190 | echo "Checking for unistd.h... No." |
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191 | fi |
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192 | |
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193 | cat > $test.c <<EOF |
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194 | #include <stdio.h> |
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195 | #include <stdarg.h> |
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196 | #include "zconf.h" |
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197 | |
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198 | int main() |
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199 | { |
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200 | #ifndef STDC |
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201 | choke me |
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202 | #endif |
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203 | |
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204 | return 0; |
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205 | } |
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206 | EOF |
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207 | |
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208 | if test "`($CC -c $CFLAGS $test.c) 2>&1`" = ""; then |
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209 | echo "Checking whether to use vs[n]printf() or s[n]printf()... using vs[n]printf()" |
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210 | |
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211 | cat > $test.c <<EOF |
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212 | #include <stdio.h> |
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213 | #include <stdarg.h> |
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214 | |
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215 | int mytest(char *fmt, ...) |
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216 | { |
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217 | char buf[20]; |
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218 | va_list ap; |
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219 | |
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220 | va_start(ap, fmt); |
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221 | vsnprintf(buf, sizeof(buf), fmt, ap); |
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222 | va_end(ap); |
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223 | return 0; |
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224 | } |
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225 | |
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226 | int main() |
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227 | { |
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228 | return (mytest("Hello%d\n", 1)); |
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229 | } |
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230 | EOF |
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231 | |
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232 | if test "`($CC $CFLAGS -o $test $test.c) 2>&1`" = ""; then |
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233 | echo "Checking for vsnprintf() in stdio.h... Yes." |
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234 | |
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235 | cat >$test.c <<EOF |
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236 | #include <stdio.h> |
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237 | #include <stdarg.h> |
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238 | |
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239 | int mytest(char *fmt, ...) |
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240 | { |
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241 | int n; |
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242 | char buf[20]; |
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243 | va_list ap; |
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244 | |
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245 | va_start(ap, fmt); |
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246 | n = vsnprintf(buf, sizeof(buf), fmt, ap); |
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247 | va_end(ap); |
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248 | return n; |
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249 | } |
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250 | |
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251 | int main() |
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252 | { |
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253 | return (mytest("Hello%d\n", 1)); |
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254 | } |
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255 | EOF |
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256 | |
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257 | if test "`($CC -c $CFLAGS $test.c) 2>&1`" = ""; then |
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258 | echo "Checking for return value of vsnprintf()... Yes." |
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259 | else |
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260 | CFLAGS="$CFLAGS -DHAS_vsnprintf_void" |
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261 | echo "Checking for return value of vsnprintf()... No." |
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262 | echo " WARNING: apparently vsnprintf() does not return a value. zlib" |
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263 | echo " can build but will be open to possible string-format security" |
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264 | echo " vulnerabilities." |
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265 | fi |
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266 | else |
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267 | CFLAGS="$CFLAGS -DNO_vsnprintf" |
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268 | echo "Checking for vsnprintf() in stdio.h... No." |
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269 | echo " WARNING: vsnprintf() not found, falling back to vsprintf(). zlib" |
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270 | echo " can build but will be open to possible buffer-overflow security" |
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271 | echo " vulnerabilities." |
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272 | |
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273 | cat >$test.c <<EOF |
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274 | #include <stdio.h> |
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275 | #include <stdarg.h> |
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276 | |
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277 | int mytest(char *fmt, ...) |
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278 | { |
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279 | int n; |
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280 | char buf[20]; |
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281 | va_list ap; |
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282 | |
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283 | va_start(ap, fmt); |
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284 | n = vsprintf(buf, fmt, ap); |
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285 | va_end(ap); |
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286 | return n; |
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287 | } |
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288 | |
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289 | int main() |
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290 | { |
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291 | return (mytest("Hello%d\n", 1)); |
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292 | } |
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293 | EOF |
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294 | |
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295 | if test "`($CC -c $CFLAGS $test.c) 2>&1`" = ""; then |
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296 | echo "Checking for return value of vsprintf()... Yes." |
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297 | else |
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298 | CFLAGS="$CFLAGS -DHAS_vsprintf_void" |
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299 | echo "Checking for return value of vsprintf()... No." |
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300 | echo " WARNING: apparently vsprintf() does not return a value. zlib" |
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301 | echo " can build but will be open to possible string-format security" |
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302 | echo " vulnerabilities." |
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303 | fi |
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304 | fi |
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305 | else |
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306 | echo "Checking whether to use vs[n]printf() or s[n]printf()... using s[n]printf()" |
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307 | |
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308 | cat >$test.c <<EOF |
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309 | #include <stdio.h> |
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310 | |
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311 | int mytest() |
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312 | { |
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313 | char buf[20]; |
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314 | |
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315 | snprintf(buf, sizeof(buf), "%s", "foo"); |
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316 | return 0; |
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317 | } |
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318 | |
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319 | int main() |
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320 | { |
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321 | return (mytest()); |
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322 | } |
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323 | EOF |
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324 | |
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325 | if test "`($CC $CFLAGS -o $test $test.c) 2>&1`" = ""; then |
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326 | echo "Checking for snprintf() in stdio.h... Yes." |
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327 | |
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328 | cat >$test.c <<EOF |
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329 | #include <stdio.h> |
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330 | |
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331 | int mytest() |
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332 | { |
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333 | char buf[20]; |
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334 | |
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335 | return snprintf(buf, sizeof(buf), "%s", "foo"); |
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336 | } |
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337 | |
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338 | int main() |
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339 | { |
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340 | return (mytest()); |
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341 | } |
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342 | EOF |
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343 | |
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344 | if test "`($CC -c $CFLAGS $test.c) 2>&1`" = ""; then |
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345 | echo "Checking for return value of snprintf()... Yes." |
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346 | else |
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347 | CFLAGS="$CFLAGS -DHAS_snprintf_void" |
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348 | echo "Checking for return value of snprintf()... No." |
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349 | echo " WARNING: apparently snprintf() does not return a value. zlib" |
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350 | echo " can build but will be open to possible string-format security" |
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351 | echo " vulnerabilities." |
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352 | fi |
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353 | else |
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354 | CFLAGS="$CFLAGS -DNO_snprintf" |
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355 | echo "Checking for snprintf() in stdio.h... No." |
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356 | echo " WARNING: snprintf() not found, falling back to sprintf(). zlib" |
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357 | echo " can build but will be open to possible buffer-overflow security" |
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358 | echo " vulnerabilities." |
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359 | |
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360 | cat >$test.c <<EOF |
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361 | #include <stdio.h> |
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362 | |
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363 | int mytest() |
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364 | { |
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365 | char buf[20]; |
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366 | |
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367 | return sprintf(buf, "%s", "foo"); |
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368 | } |
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369 | |
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370 | int main() |
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371 | { |
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372 | return (mytest()); |
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373 | } |
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374 | EOF |
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375 | |
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376 | if test "`($CC -c $CFLAGS $test.c) 2>&1`" = ""; then |
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377 | echo "Checking for return value of sprintf()... Yes." |
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378 | else |
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379 | CFLAGS="$CFLAGS -DHAS_sprintf_void" |
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380 | echo "Checking for return value of sprintf()... No." |
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381 | echo " WARNING: apparently sprintf() does not return a value. zlib" |
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382 | echo " can build but will be open to possible string-format security" |
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383 | echo " vulnerabilities." |
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384 | fi |
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385 | fi |
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386 | fi |
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387 | |
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388 | cat >$test.c <<EOF |
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389 | #include <errno.h> |
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390 | int main() { return 0; } |
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391 | EOF |
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392 | if test "`($CC -c $CFLAGS $test.c) 2>&1`" = ""; then |
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393 | echo "Checking for errno.h... Yes." |
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394 | else |
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395 | echo "Checking for errno.h... No." |
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396 | CFLAGS="$CFLAGS -DNO_ERRNO_H" |
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397 | fi |
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398 | |
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399 | cat > $test.c <<EOF |
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400 | #include <sys/types.h> |
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401 | #include <sys/mman.h> |
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402 | #include <sys/stat.h> |
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403 | caddr_t hello() { |
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404 | return mmap((caddr_t)0, (off_t)0, PROT_READ, MAP_SHARED, 0, (off_t)0); |
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405 | } |
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406 | EOF |
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407 | if test "`($CC -c $CFLAGS $test.c) 2>&1`" = ""; then |
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408 | CFLAGS="$CFLAGS -DUSE_MMAP" |
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409 | echo Checking for mmap support... Yes. |
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410 | else |
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411 | echo Checking for mmap support... No. |
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412 | fi |
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413 | |
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414 | CPP=${CPP-"$CC -E"} |
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415 | case $CFLAGS in |
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416 | *ASMV*) |
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417 | if test "`nm $test.o | grep _hello`" = ""; then |
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418 | CPP="$CPP -DNO_UNDERLINE" |
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419 | echo Checking for underline in external names... No. |
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420 | else |
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421 | echo Checking for underline in external names... Yes. |
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422 | fi;; |
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423 | esac |
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424 | |
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425 | rm -f $test.[co] $test $test$shared_ext |
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426 | |
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427 | # udpate Makefile |
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428 | sed < Makefile.in " |
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429 | /^CC *=/s#=.*#=$CC# |
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430 | /^CFLAGS *=/s#=.*#=$CFLAGS# |
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431 | /^CPP *=/s#=.*#=$CPP# |
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432 | /^LDSHARED *=/s#=.*#=$LDSHARED# |
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433 | /^LIBS *=/s#=.*#=$LIBS# |
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434 | /^SHAREDLIB *=/s#=.*#=$SHAREDLIB# |
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435 | /^SHAREDLIBV *=/s#=.*#=$SHAREDLIBV# |
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436 | /^SHAREDLIBM *=/s#=.*#=$SHAREDLIBM# |
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437 | /^AR *=/s#=.*#=$AR# |
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438 | /^RANLIB *=/s#=.*#=$RANLIB# |
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439 | /^EXE *=/s#=.*#=$EXE# |
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440 | /^prefix *=/s#=.*#=$prefix# |
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441 | /^exec_prefix *=/s#=.*#=$exec_prefix# |
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442 | /^libdir *=/s#=.*#=$libdir# |
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443 | /^includedir *=/s#=.*#=$includedir# |
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444 | /^mandir *=/s#=.*#=$mandir# |
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445 | /^LDFLAGS *=/s#=.*#=$LDFLAGS# |
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446 | " > Makefile |
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