config-scripts/cups-compiler.m4

   1 dnl
   2 dnl "$Id: cups-compiler.m4 4915 2006-01-11 15:57:53Z mike $"
   3 dnl
   4 dnl   Compiler stuff for the Common UNIX Printing System (CUPS).
   5 dnl
   6 dnl   Copyright 1997-2006 by Easy Software Products, all rights reserved.
   7 dnl
   8 dnl   These coded instructions, statements, and computer programs are the
   9 dnl   property of Easy Software Products and are protected by Federal
  10 dnl   copyright law.  Distribution and use rights are outlined in the file
  11 dnl   "LICENSE.txt" which should have been included with this file.  If this
  12 dnl   file is missing or damaged please contact Easy Software Products
  13 dnl   at:
  14 dnl
  15 dnl       Attn: CUPS Licensing Information
  16 dnl       Easy Software Products
  17 dnl       44141 Airport View Drive, Suite 204
  18 dnl       Hollywood, Maryland 20636 USA
  19 dnl
  20 dnl       Voice: (301) 373-9600
  21 dnl       EMail: cups-info@cups.org
  22 dnl         WWW: http://www.cups.org
  23 dnl
  24
  25 dnl Clear the debugging and non-shared library options unless the user asks
  26 dnl for them...
  27 OPTIM=""
  28 AC_SUBST(OPTIM)
  29
  30 AC_ARG_ENABLE(debug, [  --enable-debug          turn on debugging, default=no],
  31         [if test x$enable_debug = xyes; then
  32                 OPTIM="-g"
  33         fi])
  34
  35 AC_ARG_WITH(optim, [  --with-optim="flags"    set optimization flags ])
  36
  37 dnl Update compiler options...
  38 CXXLIBS=""
  39 AC_SUBST(CXXLIBS)
  40
  41 if test -n "$GCC"; then
  42         if test -z "$OPTIM"; then
  43                 if test "x$with_optim" = x; then
  44                         # Default to optimize-for-size and debug
  45                         OPTIM="-Os -g"
  46                 else
  47                         OPTIM="$with_optim $OPTIM"
  48                 fi
  49         fi
  50
  51         if test $PICFLAG = 1 -a $uname != AIX; then
  52                 OPTIM="-fPIC $OPTIM"
  53         fi
  54
  55         case $uname in
  56                 Darwin*)
  57                         if test "x$with_optim" = x; then
  58                                 if test "x`uname -m`" = xi386; then
  59                                         # Build universal binaries for OSX on Intel...
  60                                         OPTIM="-arch i386 -arch ppc $OPTIM"
  61                                         DSOFLAGS="-arch i386 -arch ppc $DSOFLAGS"
  62                                 fi
  63                         fi
  64                         ;;
  65
  66                 Linux*)
  67                         AC_MSG_CHECKING(if GCC supports -fpie)
  68
  69                         OLDCFLAGS="$CFLAGS"
  70                         CFLAGS="$CFLAGS -fpie"
  71                         AC_TRY_COMPILE(,,
  72                                 OPTIM="$OPTIM -fpie"
  73                                 LDFLAGS="$LDFLAGS -pie"
  74                                 AC_MSG_RESULT(yes),
  75                                 CFLAGS="$OLDCFLAGS"
  76                                 AC_MSG_RESULT(no))
  77                         ;;
  78         esac
  79
  80         if test "x$with_optim" = x; then
  81                 # Add useful warning options for tracking down problems...
  82                 OPTIM="-Wall -Wno-format-y2k $OPTIM"
  83                 # Additional warning options for alpha testing...
  84                 OPTIM="-Wshadow -Wunused $OPTIM"
  85         fi
  86 else
  87         case $uname in
  88                 AIX*)
  89                         if test -z "$OPTIM"; then
  90                                 if test "x$with_optim" = x; then
  91                                         OPTIM="-O2 -qmaxmem=6000"
  92                                 else
  93                                         OPTIM="$with_optim $OPTIM"
  94                                 fi
  95                         fi
  96                         ;;
  97                 HP-UX*)
  98                         if test -z "$OPTIM"; then
  99                                 if test "x$with_optim" = x; then
 100                                         OPTIM="+O2"
 101                                 else
 102                                         OPTIM="$with_optim $OPTIM"
 103                                 fi
 104                         fi
 105
 106                         CFLAGS="-Ae $CFLAGS"
 107
 108                         if test "x$with_optim" = x; then
 109                                 OPTIM="+DAportable $OPTIM"
 110                         fi
 111
 112                         if test $PICFLAG = 1; then
 113                                 OPTIM="+z $OPTIM"
 114                         fi
 115                         ;;
 116                 IRIX)
 117                         if test -z "$OPTIM"; then
 118                                 if test "x$with_optim" = x; then
 119                                         OPTIM="-O2"
 120                                 else
 121                                         OPTIM="$with_optim $OPTIM"
 122                                 fi
 123                         fi
 124
 125                         if test $uversion -ge 62 -a "x$with_optim" = x; then
 126                                 OPTIM="$OPTIM -n32 -mips3"
 127                         fi
 128
 129                         if test "x$with_optim" = x; then
 130                                 # Show most warnings, but suppress the
 131                                 # ones about arguments not being used,
 132                                 # string constants assigned to const
 133                                 # char *'s, etc.  We only set the warning
 134                                 # options on IRIX 6.2 and higher because
 135                                 # of limitations in the older SGI compiler
 136                                 # tools.
 137                                 if test $uversion -ge 62; then
 138                                         OPTIM="-fullwarn -woff 1183,1209,1349,3201 $OPTIM"
 139                                 fi
 140                         fi
 141                         ;;
 142                 SunOS*)
 143                         # Solaris
 144                         if test -z "$OPTIM"; then
 145                                 if test "x$with_optim" = x; then
 146                                         OPTIM="-xO4"
 147                                 else
 148                                         OPTIM="$with_optim $OPTIM"
 149                                 fi
 150                         fi
 151
 152                         if test "x$with_optim" = x; then
 153                                 # Specify "generic" SPARC output and suppress
 154                                 # all of Sun's questionable warning messages...
 155                                 OPTIM="-w $OPTIM -xarch=generic"
 156                         fi
 157
 158                         if test $PICFLAG = 1; then
 159                                 OPTIM="-KPIC $OPTIM"
 160                         fi
 161                         ;;
 162                 UNIX_SVR*)
 163                         # UnixWare
 164                         if test -z "$OPTIM"; then
 165                                 if test "x$with_optim" = x; then
 166                                         OPTIM="-O"
 167                                 else
 168                                         OPTIM="$with_optim $OPTIM"
 169                                 fi
 170                         fi
 171
 172                         if test $PICFLAG = 1; then
 173                                 OPTIM="-KPIC $OPTIM"
 174                         fi
 175                         ;;
 176                 *)
 177                         # Running some other operating system; inform the user they
 178                         # should contribute the necessary options to
 179                         # cups-support@cups.org...
 180                         echo "Building CUPS with default compiler optimizations; contact"
 181                         echo "cups-bugs@cups.org with uname and compiler options needed"
 182                         echo "for your platform, or set the CFLAGS and CXXFLAGS"
 183                         echo "environment variable before running configure."
 184                         ;;
 185         esac
 186 fi
 187
 188 if test $uname = HP-UX; then
 189         # HP-UX 10.20 (at least) needs this definition to get the
 190         # h_errno global...
 191         OPTIM="$OPTIM -D_XOPEN_SOURCE_EXTENDED"
 192
 193         # HP-UX 11.00 (at least) needs this definition to get the
 194         # u_short type used by the IP headers...
 195         OPTIM="$OPTIM -D_INCLUDE_HPUX_SOURCE"
 196 fi
 197
 198 dnl
 199 dnl End of "$Id: cups-compiler.m4 4915 2006-01-11 15:57:53Z mike $".
 200 dnl