dnl
-dnl "$Id: cups-compiler.m4 6562 2007-06-18 21:51:10Z mike $"
+dnl "$Id: cups-compiler.m4 7871 2008-08-27 21:12:43Z mike $"
dnl
-dnl Compiler stuff for the Common UNIX Printing System (CUPS).
+dnl Compiler stuff for CUPS.
dnl
+dnl Copyright 2007-2013 by Apple Inc.
dnl Copyright 1997-2007 by Easy Software Products, all rights reserved.
dnl
dnl These coded instructions, statements, and computer programs are the
-dnl property of Easy Software Products and are protected by Federal
-dnl copyright law. Distribution and use rights are outlined in the file
-dnl "LICENSE.txt" which should have been included with this file. If this
-dnl file is missing or damaged please contact Easy Software Products
-dnl at:
-dnl
-dnl Attn: CUPS Licensing Information
-dnl Easy Software Products
-dnl 44141 Airport View Drive, Suite 204
-dnl Hollywood, Maryland 20636 USA
-dnl
-dnl Voice: (301) 373-9600
-dnl EMail: cups-info@cups.org
-dnl WWW: http://www.cups.org
+dnl property of Apple Inc. and are protected by Federal copyright
+dnl law. Distribution and use rights are outlined in the file "LICENSE.txt"
+dnl which should have been included with this file. If this file is
+dnl file is missing or damaged, see the license at "http://www.cups.org/".
dnl
dnl Clear the debugging and non-shared library options unless the user asks
dnl for them...
+INSTALL_STRIP=""
OPTIM=""
+AC_SUBST(INSTALL_STRIP)
AC_SUBST(OPTIM)
-AC_ARG_WITH(optim, [ --with-optim="flags" set optimization flags ])
-AC_ARG_ENABLE(debug, [ --enable-debug turn on debugging, default=no],
- [if test x$enable_debug = xyes; then
- OPTIM="-g"
- fi])
+AC_ARG_WITH(optim, [ --with-optim set optimization flags ])
+AC_ARG_ENABLE(debug, [ --enable-debug build with debugging symbols])
+AC_ARG_ENABLE(debug_guards, [ --enable-debug-guards build with memory allocation guards])
+AC_ARG_ENABLE(debug_printfs, [ --enable-debug-printfs build with CUPS_DEBUG_LOG support])
+AC_ARG_ENABLE(unit_tests, [ --enable-unit-tests build and run unit tests])
+
+dnl For debugging, keep symbols, otherwise strip them...
+if test x$enable_debug = xyes; then
+ OPTIM="-g"
+else
+ INSTALL_STRIP="-s"
+fi
+
+dnl Debug printfs can slow things down, so provide a separate option for that
+if test x$enable_debug_printfs = xyes; then
+ CFLAGS="$CFLAGS -DDEBUG"
+ CXXFLAGS="$CXXFLAGS -DDEBUG"
+fi
+
+dnl Debug guards use an extra 4 bytes for some structures like strings in the
+dnl string pool, so provide a separate option for that
+if test x$enable_debug_guards = xyes; then
+ CFLAGS="$CFLAGS -DDEBUG_GUARDS"
+ CXXFLAGS="$CXXFLAGS -DDEBUG_GUARDS"
+fi
+
+dnl Unit tests take up time during a compile...
+if test x$enable_unit_tests = xyes; then
+ UNITTESTS="unittests"
+else
+ UNITTESTS=""
+fi
+AC_SUBST(UNITTESTS)
dnl Setup general architecture flags...
-AC_ARG_WITH(archflags, [ --with-archflags="flags"
- set default architecture flags ])
+AC_ARG_WITH(archflags, [ --with-archflags set default architecture flags ])
+AC_ARG_WITH(ldarchflags, [ --with-ldarchflags set program architecture flags ])
if test -z "$with_archflags"; then
ARCHFLAGS=""
- LDARCHFLAGS=""
else
ARCHFLAGS="$with_archflags"
+fi
+
+if test -z "$with_ldarchflags"; then
if test "$uname" = Darwin; then
- # Only link 32-bit programs - 64-bit is for the shared
- # libraries...
- LDARCHFLAGS="`echo $ARCHFLAGS | sed -e '1,$s/-arch x86_64//' -e '1,$s/-arch ppc64//'`"
+ # Only create Intel programs by default
+ LDARCHFLAGS="`echo $ARCHFLAGS | sed -e '1,$s/-arch ppc64//'`"
else
LDARCHFLAGS="$ARCHFLAGS"
fi
+else
+ LDARCHFLAGS="$with_ldarchflags"
fi
AC_SUBST(ARCHFLAGS)
AC_SUBST(LDARCHFLAGS)
-dnl Setup support for separate 32/64-bit library generation...
-AC_ARG_WITH(arch32flags, [ --with-arch32flags="flags"
- specifies 32-bit architecture flags])
-ARCH32FLAGS=""
-AC_SUBST(ARCH32FLAGS)
-
-AC_ARG_WITH(arch64flags, [ --with-arch64flags="flags"
- specifies 64-bit architecture flags])
-ARCH64FLAGS=""
-AC_SUBST(ARCH64FLAGS)
-
-dnl Position-Independent Executable support on Linux...
-AC_ARG_ENABLE(pie, [ --enable-pie use GCC -fPIE option, default=no])
-
dnl Read-only data/program support on Linux...
-AC_ARG_ENABLE(relro, [ --enable-relro use GCC relro option, default=no])
+AC_ARG_ENABLE(relro, [ --enable-relro build with the GCC relro option])
dnl Update compiler options...
-CXXLIBS=""
+CXXLIBS="${CXXLIBS:=}"
AC_SUBST(CXXLIBS)
PIEFLAGS=""
fi
fi
+ # Generate position-independent code as needed...
if test $PICFLAG = 1 -a $uname != AIX; then
OPTIM="-fPIC $OPTIM"
fi
- case $uname in
- Linux*)
- if test x$enable_pie = xyes; then
- PIEFLAGS="-pie -fPIE"
- fi
-
- if test x$enable_relro = xyes; then
- RELROFLAGS="-Wl,-z,relro"
- fi
- ;;
-
- *)
- if test x$enable_pie = xyes; then
- echo "Sorry, --enable-pie is not supported on this OS!"
- fi
- ;;
- esac
+ # The -fstack-protector option is available with some versions of
+ # GCC and adds "stack canaries" which detect when the return address
+ # has been overwritten, preventing many types of exploit attacks.
+ AC_MSG_CHECKING(if GCC supports -fstack-protector)
+ OLDCFLAGS="$CFLAGS"
+ CFLAGS="$CFLAGS -fstack-protector"
+ AC_TRY_LINK(,,
+ if test "x$LSB_BUILD" = xy; then
+ # Can't use stack-protector with LSB binaries...
+ OPTIM="$OPTIM -fno-stack-protector"
+ else
+ OPTIM="$OPTIM -fstack-protector"
+ fi
+ AC_MSG_RESULT(yes),
+ AC_MSG_RESULT(no))
+ CFLAGS="$OLDCFLAGS"
+
+ if test "x$LSB_BUILD" != xy; then
+ # The -fPIE option is available with some versions of GCC and
+ # adds randomization of addresses, which avoids another class of
+ # exploits that depend on a fixed address for common functions.
+ #
+ # Not available to LSB binaries...
+ AC_MSG_CHECKING(if GCC supports -fPIE)
+ OLDCFLAGS="$CFLAGS"
+ CFLAGS="$CFLAGS -fPIE"
+ AC_TRY_COMPILE(,,
+ [case "$CC" in
+ *clang)
+ PIEFLAGS="-fPIE -Wl,-pie"
+ ;;
+ *)
+ PIEFLAGS="-fPIE -pie"
+ ;;
+ esac
+ AC_MSG_RESULT(yes)],
+ AC_MSG_RESULT(no))
+ CFLAGS="$OLDCFLAGS"
+ fi
if test "x$with_optim" = x; then
# Add useful warning options for tracking down problems...
- OPTIM="-Wall -Wno-format-y2k $OPTIM"
- # Additional warning options for alpha testing...
- OPTIM="-Wshadow -Wunused $OPTIM"
+ OPTIM="-Wall -Wno-format-y2k -Wunused $OPTIM"
+
+ # Additional warning options for development testing...
+ if test -d .svn; then
+ OPTIM="-Wshadow -Werror $OPTIM"
+ else
+ AC_MSG_CHECKING(if GCC supports -Wno-tautological-compare)
+ OLDCFLAGS="$CFLAGS"
+ CFLAGS="$CFLAGS -Werror -Wno-tautological-compare"
+ AC_TRY_COMPILE(,,
+ [OPTIM="$OPTIM -Wno-tautological-compare"
+ AC_MSG_RESULT(yes)],
+ AC_MSG_RESULT(no))
+ CFLAGS="$OLDCFLAGS"
+ fi
fi
case "$uname" in
- HP-UX*)
- if test "x$enable_32bit" = xyes; then
- # Build 32-bit libraries, 64-bit base...
- if test -z "$with_arch32flags"; then
- ARCH32FLAGS="-milp32"
- else
- ARCH32FLAGS="$with_arch32flags"
- fi
-
- if test -z "$with_archflags"; then
- if test -z "$with_arch64flags"; then
- ARCHFLAGS="-mlp64"
- else
- ARCHFLAGS="$with_arch64flags"
- fi
- fi
- fi
-
- if test "x$enable_64bit" = xyes; then
- # Build 64-bit libraries, 32-bit base...
- if test -z "$with_arch64flags"; then
- ARCH64FLAGS="-mlp64"
- else
- ARCH64FLAGS="$with_arch64flags"
- fi
-
- if test -z "$with_archflags"; then
- if test -z "$with_arch32flags"; then
- ARCHFLAGS="-milp32"
- else
- ARCHFLAGS="$with_arch32flags"
- fi
- fi
- fi
- ;;
-
- IRIX)
- if test "x$enable_32bit" = xyes; then
- # Build 32-bit libraries, 64-bit base...
- if test -z "$with_arch32flags"; then
- ARCH32FLAGS="-n32 -mips3"
- else
- ARCH32FLAGS="$with_arch32flags"
- fi
-
- if test -z "$with_archflags"; then
- if test -z "$with_arch64flags"; then
- ARCHFLAGS="-64 -mips4"
- else
- ARCHFLAGS="$with_arch64flags"
- fi
- fi
- fi
-
- if test "x$enable_64bit" = xyes; then
- # Build 64-bit libraries, 32-bit base...
- if test -z "$with_arch64flags"; then
- ARCH64FLAGS="-64 -mips4"
- else
- ARCH64FLAGS="$with_arch64flags"
- fi
-
- if test -z "$with_archflags"; then
- if test -z "$with_arch32flags"; then
- ARCHFLAGS="-n32 -mips3"
- else
- ARCHFLAGS="$with_arch32flags"
- fi
- fi
- fi
+ Darwin*)
+ # -D_FORTIFY_SOURCE=2 adds additional object size
+ # checking, basically wrapping all string functions
+ # with buffer-limited ones. Not strictly needed for
+ # CUPS since we already use buffer-limited calls, but
+ # this will catch any additions that are broken.
+ CFLAGS="$CFLAGS -D_FORTIFY_SOURCE=2"
;;
Linux*)
- if test "x$enable_32bit" = xyes; then
- # Build 32-bit libraries, 64-bit base...
- if test -z "$with_arch32flags"; then
- ARCH32FLAGS="-m32"
- else
- ARCH32FLAGS="$with_arch32flags"
- fi
-
- if test -z "$with_archflags"; then
- if test -z "$with_arch64flags"; then
- ARCHFLAGS="-m64"
- else
- ARCHFLAGS="$with_arch64flags"
- fi
- fi
- fi
-
- if test "x$enable_64bit" = xyes; then
- # Build 64-bit libraries, 32-bit base...
- if test -z "$with_arch64flags"; then
- ARCH64FLAGS="-m64"
- else
- ARCH64FLAGS="$with_arch64flags"
- fi
-
- if test -z "$with_archflags"; then
- if test -z "$with_arch32flags"; then
- ARCHFLAGS="-m32"
- else
- ARCHFLAGS="$with_arch32flags"
- fi
- fi
- fi
- ;;
-
- SunOS*)
- if test "x$enable_32bit" = xyes; then
- # Build 32-bit libraries, 64-bit base...
- if test -z "$with_arch32flags"; then
- ARCH32FLAGS="-m32"
- else
- ARCH32FLAGS="$with_arch32flags"
- fi
-
- if test -z "$with_archflags"; then
- if test -z "$with_arch64flags"; then
- ARCHFLAGS="-m64"
- else
- ARCHFLAGS="$with_arch64flags"
- fi
- fi
- fi
-
- if test "x$enable_64bit" = xyes; then
- # Build 64-bit libraries, 32-bit base...
- if test -z "$with_arch64flags"; then
- ARCH64FLAGS="-m64"
- else
- ARCH64FLAGS="$with_arch64flags"
- fi
-
- if test -z "$with_archflags"; then
- if test -z "$with_arch32flags"; then
- ARCHFLAGS="-m32"
- else
- ARCHFLAGS="$with_arch32flags"
- fi
- fi
+ # The -z relro option is provided by the Linux linker command to
+ # make relocatable data read-only.
+ if test x$enable_relro = xyes; then
+ RELROFLAGS="-Wl,-z,relro"
fi
;;
esac
fi
CFLAGS="-Ae $CFLAGS"
- # Warning 336 is "empty translation unit"
- # Warning 829 is passing constant string as char *
- CXXFLAGS="+W336,829 $CXXFLAGS"
if test $PICFLAG = 1; then
OPTIM="+z $OPTIM"
fi
;;
- IRIX)
- if test -z "$OPTIM"; then
- if test "x$with_optim" = x; then
- OPTIM="-O2"
- else
- OPTIM="$with_optim $OPTIM"
- fi
- fi
-
- if test "x$with_optim" = x; then
- OPTIM="-fullwarn -woff 1183,1209,1349,1506,3201 $OPTIM"
- fi
-
- if test "x$enable_32bit" = xyes; then
- # Build 32-bit libraries, 64-bit base...
- if test -z "$with_arch32flags"; then
- ARCH32FLAGS="-n32 -mips3"
- else
- ARCH32FLAGS="$with_arch32flags"
- fi
-
- if test -z "$with_archflags"; then
- if test -z "$with_arch64flags"; then
- ARCHFLAGS="-64 -mips4"
- else
- ARCHFLAGS="$with_arch64flags"
- fi
- fi
- fi
-
- if test "x$enable_64bit" = xyes; then
- # Build 64-bit libraries, 32-bit base...
- if test -z "$with_arch64flags"; then
- ARCH64FLAGS="-64 -mips4"
- else
- ARCH64FLAGS="$with_arch64flags"
- fi
-
- if test -z "$with_archflags"; then
- if test -z "$with_arch32flags"; then
- ARCHFLAGS="-n32 -mips3"
- else
- ARCHFLAGS="$with_arch32flags"
- fi
- fi
- fi
- ;;
OSF*)
# Tru64 UNIX aka Digital UNIX aka OSF/1
if test -z "$OPTIM"; then
if test $PICFLAG = 1; then
OPTIM="-KPIC $OPTIM"
fi
-
- if test "x$enable_32bit" = xyes; then
- # Compiling on a Solaris system, build 64-bit
- # binaries with separate 32-bit libraries...
- ARCH32FLAGS="-xarch=generic"
-
- if test "x$with_optim" = x; then
- # Suppress all of Sun's questionable
- # warning messages, and default to
- # 64-bit compiles of everything else...
- OPTIM="-w $OPTIM"
- fi
-
- if test -z "$with_archflags"; then
- if test -z "$with_arch64flags"; then
- ARCHFLAGS="-xarch=generic64"
- else
- ARCHFLAGS="$with_arch64flags"
- fi
- fi
- else
- if test "x$enable_64bit" = xyes; then
- # Build 64-bit libraries...
- ARCH64FLAGS="-xarch=generic64"
- fi
-
- if test "x$with_optim" = x; then
- # Suppress all of Sun's questionable
- # warning messages, and default to
- # 32-bit compiles of everything else...
- OPTIM="-w $OPTIM"
- fi
-
- if test -z "$with_archflags"; then
- if test -z "$with_arch32flags"; then
- ARCHFLAGS="-xarch=generic"
- else
- ARCHFLAGS="$with_arch32flags"
- fi
- fi
- fi
;;
UNIX_SVR*)
# UnixWare
# cups-support@cups.org...
echo "Building CUPS with default compiler optimizations; contact"
echo "cups-bugs@cups.org with uname and compiler options needed"
- echo "for your platform, or set the CFLAGS and CXXFLAGS"
- echo "environment variable before running configure."
+ echo "for your platform, or set the CFLAGS and LDFLAGS environment"
+ echo "variables before running configure."
;;
esac
fi
OPTIM="$OPTIM -D_HPUX_SOURCE"
;;
+ Linux*)
+ # glibc 2.8 and higher breaks peer credentials unless you
+ # define _GNU_SOURCE...
+ OPTIM="$OPTIM -D_GNU_SOURCE"
+ ;;
+
OSF*)
# Tru64 UNIX aka Digital UNIX aka OSF/1 need to be told
# to be POSIX-compliant...
esac
dnl
-dnl End of "$Id: cups-compiler.m4 6562 2007-06-18 21:51:10Z mike $".
+dnl End of "$Id: cups-compiler.m4 7871 2008-08-27 21:12:43Z mike $".
dnl
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