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 | SHAREDLIB=libz.so |
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23 | VER=`sed -n -e '/VERSION "/s/.*"\(.*\)".*/\1/p' < zlib.h` |
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24 | AR=${AR-"ar rc"} |
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25 | RANLIB=${RANLIB-"ranlib"} |
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26 | prefix=${prefix-/usr/local} |
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27 | exec_prefix=${exec_prefix-'${prefix}'} |
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28 | libdir=${libdir-'${exec_prefix}/lib'} |
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29 | includedir=${includedir-'${prefix}/include'} |
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30 | shared_ext='.so' |
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31 | shared=0 |
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32 | gcc=0 |
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33 | old_cc="$CC" |
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34 | old_cflags="$CFLAGS" |
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35 | |
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36 | while test $# -ge 1 |
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37 | do |
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38 | case "$1" in |
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39 | -h* | --h*) |
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40 | echo 'usage:' |
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41 | echo ' configure [--shared] [--prefix=PREFIX] [--exec_prefix=EXPREFIX]' |
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42 | echo ' [--libdir=LIBDIR] [--includedir=INCLUDEDIR]' |
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43 | exit 0;; |
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44 | -p*=* | --p*=*) prefix=`echo $1 | sed 's/[-a-z_]*=//'`; shift;; |
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45 | -e*=* | --e*=*) exec_prefix=`echo $1 | sed 's/[-a-z_]*=//'`; shift;; |
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46 | -l*=* | --libdir=*) libdir=`echo $1 | sed 's/[-a-z_]*=//'`; shift;; |
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47 | -i*=* | --includedir=*) includedir=`echo $1 | sed 's/[-a-z_]*=//'`;shift;; |
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48 | -p* | --p*) prefix="$2"; shift; shift;; |
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49 | -e* | --e*) exec_prefix="$2"; shift; shift;; |
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50 | -l* | --l*) libdir="$2"; shift; shift;; |
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51 | -i* | --i*) includedir="$2"; shift; shift;; |
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52 | -s* | --s*) shared=1; shift;; |
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53 | esac |
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54 | done |
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55 | |
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56 | test=ztest$$ |
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57 | cat > $test.c <<EOF |
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58 | extern int getchar(); |
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59 | int hello() {return getchar();} |
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60 | EOF |
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61 | |
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62 | test -z "$CC" && echo Checking for gcc... |
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63 | cc=${CC-gcc} |
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64 | cflags=${CFLAGS-"-O3"} |
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65 | # to force the asm version use: CFLAGS="-O3 -DASMV" ./configure |
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66 | case "$cc" in |
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67 | *gcc*) gcc=1;; |
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68 | esac |
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69 | |
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70 | if test "$gcc" -eq 1 && ($cc -c $cflags $test.c) 2>/dev/null; then |
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71 | CC="$cc" |
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72 | SFLAGS=${CFLAGS-"-fPIC"} |
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73 | CFLAGS="$cflags" |
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74 | case `(uname -s || echo unknown) 2>/dev/null` in |
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75 | Linux | linux) LDSHARED=${LDSHARED-"$CC -shared -Wl,-soname,libz.so.1"};; |
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76 | *) LDSHARED=${LDSHARED-"$CC -shared"};; |
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77 | esac |
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78 | else |
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79 | # find system name and corresponding cc options |
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80 | CC=${CC-cc} |
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81 | case `(uname -sr || echo unknown) 2>/dev/null` in |
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82 | HP-UX*) SFLAGS=${CFLAGS-"-O +z"} |
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83 | CFLAGS=${CFLAGS-"-O"} |
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84 | # LDSHARED=${LDSHARED-"ld -b +vnocompatwarnings"} |
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85 | LDSHARED=${LDSHARED-"ld -b"} |
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86 | shared_ext='.sl' |
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87 | SHAREDLIB='libz.sl';; |
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88 | IRIX*) SFLAGS=${CFLAGS-"-ansi -O2 -rpath ."} |
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89 | CFLAGS=${CFLAGS-"-ansi -O2"} |
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90 | LDSHARED=${LDSHARED-"cc -shared"};; |
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91 | OSF1\ V4*) SFLAGS=${CFLAGS-"-O -std1"} |
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92 | CFLAGS=${CFLAGS-"-O -std1"} |
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93 | LDSHARED=${LDSHARED-"cc -shared -Wl,-soname,$SHAREDLIB -Wl,-msym -Wl,-rpath,$(libdir) -Wl,-set_version,${VER}:1.0"};; |
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94 | OSF1*) SFLAGS=${CFLAGS-"-O -std1"} |
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95 | CFLAGS=${CFLAGS-"-O -std1"} |
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96 | LDSHARED=${LDSHARED-"cc -shared"};; |
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97 | QNX*) SFLAGS=${CFLAGS-"-4 -O"} |
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98 | CFLAGS=${CFLAGS-"-4 -O"} |
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99 | LDSHARED=${LDSHARED-"cc"} |
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100 | RANLIB=${RANLIB-"true"} |
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101 | AR="cc -A";; |
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102 | SCO_SV\ 3.2*) SFLAGS=${CFLAGS-"-O3 -dy -KPIC "} |
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103 | CFLAGS=${CFLAGS-"-O3"} |
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104 | LDSHARED=${LDSHARED-"cc -dy -KPIC -G"};; |
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105 | SunOS\ 5*) SFLAGS=${CFLAGS-"-fast -xcg89 -KPIC -R."} |
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106 | CFLAGS=${CFLAGS-"-fast -xcg89"} |
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107 | LDSHARED=${LDSHARED-"cc -G"};; |
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108 | SunOS\ 4*) SFLAGS=${CFLAGS-"-O2 -PIC"} |
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109 | CFLAGS=${CFLAGS-"-O2"} |
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110 | LDSHARED=${LDSHARED-"ld"};; |
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111 | UNIX_System_V\ 4.2.0) |
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112 | SFLAGS=${CFLAGS-"-KPIC -O"} |
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113 | CFLAGS=${CFLAGS-"-O"} |
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114 | LDSHARED=${LDSHARED-"cc -G"};; |
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115 | UNIX_SV\ 4.2MP) |
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116 | SFLAGS=${CFLAGS-"-Kconform_pic -O"} |
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117 | CFLAGS=${CFLAGS-"-O"} |
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118 | LDSHARED=${LDSHARED-"cc -G"};; |
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119 | # send working options for other systems to support@gzip.org |
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120 | *) SFLAGS=${CFLAGS-"-O"} |
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121 | CFLAGS=${CFLAGS-"-O"} |
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122 | LDSHARED=${LDSHARED-"cc -shared"};; |
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123 | esac |
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124 | fi |
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125 | |
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126 | if test $shared -eq 1; then |
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127 | echo Checking for shared library support... |
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128 | # we must test in two steps (cc then ld), required at least on SunOS 4.x |
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129 | if test "`($CC -c $SFLAGS $test.c) 2>&1`" = "" && |
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130 | test "`($LDSHARED -o $test$shared_ext $test.o) 2>&1`" = ""; then |
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131 | CFLAGS="$SFLAGS" |
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132 | LIBS="$SHAREDLIB.$VER $LIBS" |
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133 | echo Building shared library $SHAREDLIB.$VER with $CC. |
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134 | elif test -z "$old_cc" -a -z "$old_cflags"; then |
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135 | echo No shared library suppport. |
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136 | shared=0; |
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137 | else |
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138 | echo 'No shared library suppport; try without defining CC and CFLAGS' |
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139 | shared=0; |
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140 | fi |
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141 | fi |
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142 | if test $shared -eq 0; then |
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143 | LDSHARED="$CC" |
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144 | echo Building static library $LIBS version $VER with $CC. |
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145 | fi |
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146 | |
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147 | cat > $test.c <<EOF |
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148 | #include <unistd.h> |
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149 | int main() { return 0; } |
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150 | EOF |
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151 | if test "`($CC -c $CFLAGS $test.c) 2>&1`" = ""; then |
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152 | CFLAGS="$CFLAGS -DHAVE_UNISTD_H" |
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153 | echo "Checking for unistd.h... Yes." |
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154 | else |
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155 | echo "Checking for unistd.h... No." |
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156 | fi |
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157 | |
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158 | cat > $test.c <<EOF |
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159 | #include <errno.h> |
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160 | int main() { return 0; } |
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161 | EOF |
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162 | if test "`($CC -c $CFLAGS $test.c) 2>&1`" = ""; then |
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163 | echo "Checking for errno.h... Yes." |
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164 | else |
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165 | echo "Checking for errno.h... No." |
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166 | CFLAGS="$CFLAGS -DNO_ERRNO_H" |
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167 | fi |
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168 | |
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169 | cat > $test.c <<EOF |
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170 | #include <sys/types.h> |
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171 | #include <sys/mman.h> |
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172 | #include <sys/stat.h> |
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173 | caddr_t hello() { |
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174 | return mmap((caddr_t)0, (off_t)0, PROT_READ, MAP_SHARED, 0, (off_t)0); |
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175 | } |
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176 | EOF |
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177 | if test "`($CC -c $CFLAGS $test.c) 2>&1`" = ""; then |
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178 | CFLAGS="$CFLAGS -DUSE_MMAP" |
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179 | echo Checking for mmap support... Yes. |
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180 | else |
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181 | echo Checking for mmap support... No. |
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182 | fi |
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183 | |
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184 | CPP=${CPP-"$CC -E"} |
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185 | case $CFLAGS in |
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186 | *ASMV*) |
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187 | if test "`nm $test.o | grep _hello`" = ""; then |
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188 | CPP="$CPP -DNO_UNDERLINE" |
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189 | echo Checking for underline in external names... No. |
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190 | else |
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191 | echo Checking for underline in external names... Yes. |
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192 | fi;; |
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193 | esac |
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194 | |
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195 | rm -f $test.[co] $test$shared_ext |
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196 | |
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197 | # udpate Makefile |
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198 | sed < Makefile.in " |
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199 | /^CC *=/s%=.*%=$CC% |
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200 | /^CFLAGS *=/s%=.*%=$CFLAGS% |
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201 | /^CPP *=/s%=.*%=$CPP% |
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202 | /^LDSHARED *=/s%=.*%=$LDSHARED% |
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203 | /^LIBS *=/s%=.*%=$LIBS% |
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204 | /^SHAREDLIB *=/s%=.*%=$SHAREDLIB% |
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205 | /^AR *=/s%=.*%=$AR% |
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206 | /^RANLIB *=/s%=.*%=$RANLIB% |
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207 | /^VER *=/s%=.*%=$VER% |
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208 | /^prefix *=/s%=.*%=$prefix% |
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209 | /^exec_prefix *=/s%=.*%=$exec_prefix% |
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210 | /^libdir *=/s%=.*%=$libdir% |
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211 | /^includedir *=/s%=.*%=$includedir% |
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212 | " > Makefile |
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