configure.tgt revision 283010 
1# This is the target specific configuration file.  This is invoked by the
2# autoconf generated configure script.  Putting it in a separate shell file
3# lets us skip running autoconf when modifying target specific information.
4
5# This file switches on the shell variable ${target}, and sets the
6# following shell variables:
7#  config_path		An ordered list of directories to search for
8#			sources and headers.  This is relative to the
9#			config subdirectory of the source tree.
10#  XCFLAGS		Add extra compile flags to use.
11#  XLDFLAGS		Add extra link flags to use.
12
13# Optimize TLS usage by avoiding the overhead of dynamic allocation.
14if test $gcc_cv_have_tls = yes ; then
15  case "${target}" in
16
17    *-*-linux*)
18	XCFLAGS="${XCFLAGS} -ftls-model=initial-exec"
19	;;
20  esac
21fi
22
23# Since we require POSIX threads, assume a POSIX system by default.
24config_path="posix"
25
26# Check for futex enabled all at once.
27if test $enable_linux_futex = yes; then
28  case "${target}" in
29
30    alpha*-*-linux*)
31	config_path="linux/alpha linux posix"
32	;;
33
34    ia64*-*-linux*)
35	config_path="linux/ia64 linux posix"
36	;;
37
38    powerpc*-*-linux*)
39	config_path="linux/powerpc linux posix"
40	;;
41
42    s390*-*-linux*)
43	config_path="linux/s390 linux posix"
44	;;
45
46    # Note that bare i386 is not included here.  We need cmpxchg.
47    i[456]86-*-linux*)
48	config_path="linux/x86 linux posix"
49	case " ${CC} ${CFLAGS} " in
50	  *" -m64 "*)
51	    ;;
52	  *)
53	    if test -z "$with_arch"; then
54	      XCFLAGS="${XCFLAGS} -march=i486 -mtune=${target_cpu}"
55	    fi
56	esac
57	;;
58
59    # Similar jiggery-pokery for x86_64 multilibs, except here we
60    # can't rely on the --with-arch configure option, since that
61    # applies to the 64-bit side.
62    x86_64-*-linux*)
63	config_path="linux/x86 linux posix"
64	case " ${CC} ${CFLAGS} " in
65	  *" -m32 "*)
66	    XCFLAGS="${XCFLAGS} -march=i486 -mtune=i686"
67	    ;;
68	esac
69	;;
70
71    # Note that sparcv7 and sparcv8 is not included here.  We need cas.
72    sparcv9-*-linux* | sparc64-*-linux*)
73	echo "int i;" > conftestx.c
74	if ${CC} ${CFLAGS} -c -o conftestx.o conftestx.c > /dev/null 2>&1; then
75	  config_path="linux/sparc linux posix"
76	  case "`/usr/bin/file conftestx.o`" in
77	    *32-bit*)
78	      case " ${CC} ${CFLAGS}" in
79		*" -mcpu=ultrasparc"*)
80		  ;;
81		*)
82		  XCFLAGS="${XCFLAGS} -mcpu=v9"
83		  ;;
84	      esac
85	      ;;
86	  esac
87	fi
88	rm -f conftestx.c conftestx.o
89	;;
90  esac
91fi
92
93# Other system configury
94case "${target}" in
95
96  *-*-hpux11*)
97	# HPUX v11.x requires -lrt to resolve sem_init in libgomp.la
98	XLDFLAGS="${XLDFLAGS} -lrt"
99	;;
100
101  *-*-mingw32*)
102	config_path="mingw32 posix"
103	;;
104
105  *-*-solaris2.[56]*)
106	config_path="posix95 posix"
107	XLDFLAGS="${XLDFLAGS} -lposix4"
108	;;
109
110  *-*-darwin*)
111	config_path="bsd posix"
112	;;
113
114  *)
115	;;
116
117esac
118