dnl
-dnl "$Id: cups-compiler.m4 4953 2006-01-19 20:30:48Z mike $"
+dnl "$Id$"
dnl
-dnl Compiler stuff for the Common UNIX Printing System (CUPS).
+dnl Compiler stuff for CUPS.
dnl
-dnl Copyright 1997-2006 by Easy Software Products, all rights reserved.
+dnl Copyright 2007-2013 by Apple Inc.
+dnl Copyright 1997-2007 by Easy Software Products, all rights reserved.
dnl
-dnl These coded instructions, statements, and computer programs are the
-dnl property of Easy Software Products and are protected by Federal
-dnl copyright law. Distribution and use rights are outlined in the file
-dnl "LICENSE.txt" which should have been included with this file. If this
-dnl file is missing or damaged please contact Easy Software Products
-dnl at:
-dnl
-dnl Attn: CUPS Licensing Information
-dnl Easy Software Products
-dnl 44141 Airport View Drive, Suite 204
-dnl Hollywood, Maryland 20636 USA
-dnl
-dnl Voice: (301) 373-9600
-dnl EMail: cups-info@cups.org
-dnl WWW: http://www.cups.org
+dnl These coded instructions, statements, and computer programs are the
+dnl property of Apple Inc. and are protected by Federal copyright
+dnl law. Distribution and use rights are outlined in the file "LICENSE.txt"
+dnl which should have been included with this file. If this file is
+dnl file is missing or damaged, see the license at "http://www.cups.org/".
dnl
dnl Clear the debugging and non-shared library options unless the user asks
dnl for them...
+INSTALL_STRIP=""
OPTIM=""
+AC_SUBST(INSTALL_STRIP)
AC_SUBST(OPTIM)
-AC_ARG_WITH(optim, [ --with-optim="flags" set optimization flags ])
+AC_ARG_WITH(optim, [ --with-optim set optimization flags ])
+AC_ARG_ENABLE(debug, [ --enable-debug build with debugging symbols])
+AC_ARG_ENABLE(debug_guards, [ --enable-debug-guards build with memory allocation guards])
+AC_ARG_ENABLE(debug_printfs, [ --enable-debug-printfs build with CUPS_DEBUG_LOG support])
+AC_ARG_ENABLE(unit_tests, [ --enable-unit-tests build and run unit tests])
+
+dnl For debugging, keep symbols, otherwise strip them...
+if test x$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$enable_unit_tests = xyes; then
+ UNITTESTS="unittests"
+else
+ UNITTESTS=""
+fi
+AC_SUBST(UNITTESTS)
+
+dnl Setup general architecture flags...
+AC_ARG_WITH(archflags, [ --with-archflags set default architecture flags ])
+AC_ARG_WITH(ldarchflags, [ --with-ldarchflags set program architecture flags ])
-AC_ARG_ENABLE(debug, [ --enable-debug turn on debugging, default=no],
- [if test x$enable_debug = xyes; then
- OPTIM="-g"
- fi])
+if test -z "$with_archflags"; then
+ ARCHFLAGS=""
+else
+ ARCHFLAGS="$with_archflags"
+fi
-AC_ARG_ENABLE(pie, [ --enable-pie use GCC -fpie option, default=no])
+if test -z "$with_ldarchflags"; then
+ if test "$uname" = Darwin; then
+ # 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 Read-only data/program support on Linux...
+AC_ARG_ENABLE(relro, [ --enable-relro build with the GCC relro option])
dnl Update compiler options...
-CXXLIBS=""
+CXXLIBS="${CXXLIBS:=}"
AC_SUBST(CXXLIBS)
+PIEFLAGS=""
+AC_SUBST(PIEFLAGS)
+
+RELROFLAGS=""
+AC_SUBST(RELROFLAGS)
+
if test -n "$GCC"; then
+ # Add GCC-specific compiler options...
if test -z "$OPTIM"; then
if test "x$with_optim" = x; then
# Default to optimize-for-size and debug
fi
fi
- if test $PICFLAG = 1 -a $uname != AIX; then
+ # Generate position-independent code as needed...
+ if test $PICFLAG = 1; then
OPTIM="-fPIC $OPTIM"
fi
- case $uname in
- Darwin*)
- if test "x$with_optim" = x; then
- if test "x`uname -m`" = xi386; then
- # Build universal binaries for OSX on Intel...
- OPTIM="-arch i386 -arch ppc $OPTIM"
- DSOFLAGS="-arch i386 -arch ppc $DSOFLAGS"
- fi
- fi
- ;;
-
- Linux*)
- if test x$enable_pie = xyes; then
- OPTIM="$OPTIM -fpie"
- LDFLAGS="$LDFLAGS -pie"
- 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"
+ case "$uname" in
+ Darwin*)
+ CFLAGS="$CFLAGS -fPIE -Wl,-pie"
+ AC_TRY_COMPILE(,,[
+ PIEFLAGS="-fPIE -Wl,-pie"
+ AC_MSG_RESULT(yes)],
+ AC_MSG_RESULT(no))
+ ;;
+
+ *)
+ CFLAGS="$CFLAGS -fPIE -pie"
+ AC_TRY_COMPILE(,,[
+ PIEFLAGS="-fPIE -pie"
+ AC_MSG_RESULT(yes)],
+ AC_MSG_RESULT(no))
+ ;;
+ esac
+ CFLAGS="$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 -Wsign-conversion -Wunused $OPTIM"
+
+ AC_MSG_CHECKING(if GCC supports -Wno-tautological-compare)
+ OLDCFLAGS="$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"
+
+ # Additional warning options for development testing...
+ if test -d .svn; then
+ OPTIM="-Werror $OPTIM"
+ fi
fi
-else
- case $uname in
- AIX*)
- if test -z "$OPTIM"; then
- if test "x$with_optim" = x; then
- OPTIM="-O2 -qmaxmem=6000"
- else
- OPTIM="$with_optim $OPTIM"
- fi
- fi
- ;;
- HP-UX*)
- if test -z "$OPTIM"; then
- if test "x$with_optim" = x; then
- OPTIM="+O2"
- else
- OPTIM="$with_optim $OPTIM"
- fi
- fi
-
- CFLAGS="-Ae $CFLAGS"
-
- if test "x$with_optim" = x; then
- OPTIM="+DAportable $OPTIM"
- fi
- if test $PICFLAG = 1; then
- OPTIM="+z $OPTIM"
- fi
+ case "$uname" in
+ 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="$CFLAGS -D_FORTIFY_SOURCE=2"
;;
- IRIX)
- if test -z "$OPTIM"; then
- if test "x$with_optim" = x; then
- OPTIM="-O2"
- else
- OPTIM="$with_optim $OPTIM"
- fi
- fi
-
- if test $uversion -ge 62 -a "x$with_optim" = x; then
- OPTIM="$OPTIM -n32 -mips3"
- fi
- if test "x$with_optim" = x; then
- # Show most warnings, but suppress the
- # ones about arguments not being used,
- # string constants assigned to const
- # char *'s, etc. We only set the warning
- # options on IRIX 6.2 and higher because
- # of limitations in the older SGI compiler
- # tools.
- if test $uversion -ge 62; then
- OPTIM="-fullwarn -woff 1183,1209,1349,3201 $OPTIM"
- fi
+ Linux*)
+ # The -z relro option is provided by the Linux linker command to
+ # make relocatable data read-only.
+ if test x$enable_relro = xyes; then
+ RELROFLAGS="-Wl,-z,relro"
fi
;;
+ esac
+else
+ # Add vendor-specific compiler options...
+ case $uname in
SunOS*)
# Solaris
if test -z "$OPTIM"; then
if test "x$with_optim" = x; then
- OPTIM="-xO4"
- else
- OPTIM="$with_optim $OPTIM"
- fi
- fi
-
- if test "x$with_optim" = x; then
- # Specify "generic" SPARC output and suppress
- # all of Sun's questionable warning messages...
- OPTIM="-w $OPTIM -xarch=generic"
- fi
-
- if test $PICFLAG = 1; then
- OPTIM="-KPIC $OPTIM"
- fi
- ;;
- UNIX_SVR*)
- # UnixWare
- if test -z "$OPTIM"; then
- if test "x$with_optim" = x; then
- OPTIM="-O"
+ OPTIM="-xO2"
else
OPTIM="$with_optim $OPTIM"
fi
# 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
-if test $uname = HP-UX; then
- # HP-UX 10.20 (at least) needs this definition to get the
- # h_errno global...
- OPTIM="$OPTIM -D_XOPEN_SOURCE_EXTENDED"
-
- # HP-UX 11.00 (at least) needs this definition to get the
- # u_short type used by the IP headers...
- OPTIM="$OPTIM -D_INCLUDE_HPUX_SOURCE"
-fi
+# Add general compiler options per platform...
+case $uname in
+ Linux*)
+ # glibc 2.8 and higher breaks peer credentials unless you
+ # define _GNU_SOURCE...
+ OPTIM="$OPTIM -D_GNU_SOURCE"
+ ;;
+esac
dnl
-dnl End of "$Id: cups-compiler.m4 4953 2006-01-19 20:30:48Z mike $".
+dnl End of "$Id$".
dnl
projects / thirdparty / cups.git / blobdiff