configure

   1 #!/bin/sh
   2 #set -x
   3 prefix=/usr/local
   4
   5 libs=`cat << EOF
   6 EOF
   7 `
   8 clear_config() {
   9         rm -f config.mak 2>/dev/null
  10 }
  11
  12 add_config() {
  13         printf "%s\n" "$1" >> config.mak
  14 }
  15
  16 add_cflags() {
  17         add_config "CFLAGS += $1"
  18 }
  19
  20 add_ldflags() {
  21         add_config "LDFLAGS += $1"
  22 }
  23
  24 get_pkgconf_cflags() {
  25         pkg-config --cflags "$1" 2>/dev/null
  26 }
  27
  28 get_pkgconf_ldflags() {
  29         pkg-config --libs "$1" 2>/dev/null
  30 }
  31
  32 add_pkgconf_cflags() {
  33         fallback="$2"
  34         flags=$(get_pkgconf_cflags "$1")
  35         [ -z "$flags" ] && flags="$fallback"
  36         add_cflags "$flags"
  37 }
  38
  39 add_pkgconf_ldflags() {
  40         fallback="$2"
  41         flags=$(get_pkgconf_ldflags "$1")
  42         [ -z "$flags" ] && flags="$fallback"
  43         add_ldflags "$flags"
  44 }
  45
  46 add_lib() {
  47         add_pkgconf_cflags "$1" "$2"
  48         add_pkgconf_ldflags "$1" "$3"
  49         return 0
  50 }
  51
  52 usage() {
  53         echo "supported arguments"
  54         echo "--prefix=/path                        default: $prefix"
  55         echo "--exec_prefix=/path                   default: $prefix/bin"
  56         echo "--bindir=/path                        default: $prefix/bin"
  57         echo "--libdir=/path                        default: $prefix/lib"
  58         echo "--includedir=/path                    default: $prefix/include"
  59         echo "--sysconfdir=/path                    default: $prefix/etc"
  60         echo "--with-ssl=[auto,cyassl,openssl,no]   default: auto"
  61         echo "--disable-static                      default: no"
  62         echo "--enable-shared                       default: no"
  63         echo "--help : show this text"
  64         exit 1
  65 }
  66
  67 spliteq() {
  68         arg=$1
  69         echo "${arg#*=}"
  70         #alternatives echo "$arg" | cut -d= -f2-
  71         # or echo "$arg" | sed 's/[^=]*=//'
  72 }
  73
  74 trylink () {
  75 printf "checking whether linking against %s works... " "$2"
  76 echo "int main(){};" > "$tmpc"
  77 if $CC "$2" -o /dev/null "$tmpc" >/dev/null 2>&1 ; then
  78 printf "yes\n"
  79 eval "$1=\"\${$1} \$2\""
  80 eval "$1=\${$1# }"
  81 return 0
  82 else
  83 printf "no\n"
  84 return 1
  85 fi
  86 }
  87
  88 ssl_lib=auto
  89 parsearg() {
  90         case "$1" in
  91         --prefix=*) prefix=`spliteq $1`;;
  92         --exec_prefix=*) exec_prefix=`spliteq $1`;;
  93         --bindir=*) bindir=`spliteq $1`;;
  94         --libdir=*) libdir=`spliteq $1`;;
  95         --includedir=*) includedir=`spliteq $1`;;
  96         --sysconfdir=*) sysconfdir=`spliteq $1`;;
  97         --help) usage;;
  98         --disable-static) disable_static=1 ;;
  99         --disable-static=yes) disable_static=1 ;;
 100         --enable-shared) enable_shared=1 ;;
 101         --enable-shared=yes) enable_shared=1 ;;
 102         --with-ssl=*) ssl_lib=`spliteq $1`;;
 103         esac
 104 }
 105
 106 while true ; do
 107         case $1 in
 108         -*) parsearg "$1"; shift;;
 109         *) break ;;
 110         esac
 111 done
 112
 113 [ -z "$exec_prefix" ] && exec_prefix=$prefix
 114 [ -z "$libdir" ] && libdir=$prefix/lib
 115 [ -z "$includedir" ] && includedir=$prefix/include
 116 [ -z "$sysconfdir" ] && sysconfdir=$prefix/etc
 117 [ -z "$bindir" ] && bindir=$exec_prefix/bin
 118 [ -z "$CC" ] && CC=cc
 119
 120 clear_config
 121
 122 add_config "prefix = $prefix"
 123 add_config "exec_prefix = $exec_prefix"
 124 add_config "bindir = $bindir"
 125 add_config "libdir = $libdir"
 126 add_config "includedir = $includedir"
 127 add_config "sysconfdir = $sysconfdir"
 128
 129 add_config "CC ?= $CC"
 130 [ -z "$CPPFLAGS" ] || add_config "CPPFLAGS ?= $CPPFLAGS"
 131 [ -z "$CFLAGS" ] ||   add_config "CFLAGS ?= $CFLAGS"
 132
 133 for lib in $libs ; do add_lib "$lib" ; done
 134
 135 #
 136 # Get a temp filename we can use
 137 #
 138 i=0
 139 set -C
 140 while : ; do i=$(($i+1))
 141 tmpc="./conf$$-$PPID-$i.c"
 142 2>|/dev/null > "$tmpc" && break
 143 test "$i" -gt 50 && fail "$0: cannot create temporary file $tmpc"
 144 done
 145 set +C
 146 trap 'rm "$tmpc"' EXIT INT QUIT TERM HUP
 147
 148
 149 if [ "$ssl_lib" = auto ] ; then
 150         foo=
 151         if trylink foo "-lcyassl" ; then ssl_lib=cyassl
 152         elif trylink foo "-lssl" && trylink foo "-lcrypto" ; then ssl_lib=openssl
 153         else ssl_lib=no
 154         fi
 155 fi
 156 if [ ! "$ssl_lib" = no ] ; then
 157         add_config "CFLAGS += -DUSE_SSL"
 158         [ "$ssl_lib" = "openssl" ] && add_lib openssl "" "-lssl -lcrypto" && add_cflags "-DUSE_OPENSSL"
 159         [ "$ssl_lib" = "cyassl" ] && add_lib cyassl "" "-lcyassl" && add_cflags "-DUSE_CYASSL"
 160 fi
 161 [ "$disable_static" = 1 ] && add_config "ALL_LIBS =" && enable_shared=1
 162 [ "$enable_shared" = 1 ] && add_config "ALL_LIBS += librocksock.so"
 163
 164
 165 echo "hint: if you intend to build a static binary with minimal size, try NO_DNS_SUPPORT, NO_STRDUP in CFLAGS"
 166 echo "config.mak successfully created. now run make && make install"
 167