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[/] [openrisc/] [trunk/] [gnu-dev/] [or1k-gcc/] [libmudflap/] [configure.ac] - Blame information for rev 738

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1 738 jeremybenn
# Process this file with autoconf to produce a configure script, like so:
2
# aclocal -I .. -I ../config && autoconf && autoheader && automake
3
 
4
AC_PREREQ(2.64)
5
AC_INIT(libmudflap, 1.0)
6
AC_CONFIG_SRCDIR(mf-runtime.c)
7
AC_CANONICAL_SYSTEM
8
ACX_NONCANONICAL_TARGET
9
 
10
AM_INIT_AUTOMAKE([no-dist])
11
 
12
AC_MSG_CHECKING([for --enable-version-specific-runtime-libs])
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AC_ARG_ENABLE(version-specific-runtime-libs,
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[  --enable-version-specific-runtime-libs    Specify that runtime libraries should be installed in a compiler-specific directory ],
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[case "$enableval" in
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 yes) version_specific_libs=yes ;;
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 no)  version_specific_libs=no ;;
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 *)   AC_MSG_ERROR([Unknown argument to enable/disable version-specific libs]);;
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 esac],
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[version_specific_libs=no])
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AC_MSG_RESULT($version_specific_libs)
22
 
23
AM_MAINTAINER_MODE
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AC_EXEEXT
25
 
26
AM_ENABLE_MULTILIB(, ..)
27
 
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target_alias=${target_alias-$host_alias}
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AC_SUBST(target_alias)
30
 
31
AC_CONFIG_HEADERS(config.h)
32
 
33
AC_LANG_C
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# The same as in boehm-gc and libstdc++. Have to borrow it from there.
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# We must force CC to /not/ be precious variables; otherwise
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# the wrong, non-multilib-adjusted value will be used in multilibs.
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# As a side effect, we have to subst CFLAGS ourselves.
38
 
39
m4_rename([_AC_ARG_VAR_PRECIOUS],[real_PRECIOUS])
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m4_define([_AC_ARG_VAR_PRECIOUS],[])
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AC_PROG_CC
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m4_rename_force([real_PRECIOUS],[_AC_ARG_VAR_PRECIOUS])
43
 
44
AC_SUBST(CFLAGS)
45
 
46
if test "x$GCC" != "xyes"; then
47
  AC_MSG_ERROR([libmudflap must be built with GCC])
48
fi
49
AC_PROG_CPP
50
 
51
# Some hosts don't have dlsym(RTLD_NEXT, "symbol") for use in
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# symbol interposition.  We disable shared libraries for these.
53
AC_MSG_CHECKING([whether dlsym(RTLD_NEXT,...) is available])
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AC_TRY_COMPILE([
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#define _GNU_SOURCE
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#include 
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],
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[void *foo = dlsym (RTLD_NEXT, "exit");],
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[AC_MSG_RESULT(yes)],
60
[AC_MSG_RESULT(no)
61
enable_shared=no])
62
 
63
AC_CHECK_HEADERS(stdint.h execinfo.h signal.h dlfcn.h dirent.h pwd.h grp.h \
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  netdb.h sys/ipc.h sys/sem.h sys/shm.h sys/wait.h ctype.h mntent.h \
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  sys/mnttab.h sys/socket.h netinet/in.h arpa/inet.h dlfcn.h sys/mman.h)
66
 
67
AC_CHECK_FUNCS(backtrace backtrace_symbols gettimeofday signal)
68
AC_CHECK_FUNCS(fopen64 fseeko64 ftello64 stat64 freopen64)
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AC_CHECK_FUNCS(setbuf setbuffer setlinebuf setvbuf)
70
AC_CHECK_FUNCS(strnlen memrchr strncpy memmem sethostname)
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AC_CHECK_FUNCS(__ctype_b_loc __ctype_tolower_loc __ctype_toupper_loc)
72
AC_CHECK_FUNCS(getlogin cuserid getpwnam getpwuid getpwent getgrnam getgrgid getgrent)
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AC_CHECK_FUNCS(getlogin_r getpwnam_r getpwuid_r getgrnam_r getgrgid_r)
74
AC_CHECK_FUNCS(getservent getservbyname getservbyport getaddrinfo gai_strerror)
75
AC_CHECK_FUNCS(getprotoent getprotobyname getprotobynumber)
76
AC_CHECK_FUNCS(getmntent setmntent addmntent)
77
AC_CHECK_FUNCS(inet_ntoa mmap munmap)
78
AC_CHECK_FUNCS(mmap64)
79
AC_CHECK_FUNCS(__libc_freeres)
80
AC_CHECK_FUNCS(rawmemchr stpcpy mempcpy)
81
 
82
AC_TRY_COMPILE([#include 
83
#include 
84
#include ],[union semun foo;], [mf_have_semun=1], [mf_have_semun=0])
85
if test $mf_have_semun = 1
86
then
87
  AC_DEFINE(HAVE_UNION_SEMUN, 1, [union semun defined in sys/ipc.h or sys/sem.h])
88
fi
89
 
90
 
91
AC_MSG_CHECKING([for socklen_t in sys/socket.h])
92
AC_TRY_COMPILE([#define _POSIX_PII_SOCKET
93
#include 
94
#include ], [socklen_t x = 5;],
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  [AC_DEFINE(HAVE_SOCKLEN_T, 1, [Define it socklen_t typedef is in sys/socket.h.])
96
   AC_MSG_RESULT(yes)],
97
  [AC_MSG_RESULT(no)])
98
 
99
AC_LIBTOOL_DLOPEN
100
AM_PROG_LIBTOOL
101
AC_SUBST(enable_shared)
102
AC_SUBST(enable_static)
103
 
104
AC_CHECK_HEADER(stdint.h, [MF_HAVE_STDINT_H=1], [MF_HAVE_STDINT_H=0])
105
AC_SUBST(MF_HAVE_STDINT_H)
106
if test $MF_HAVE_STDINT_H = 1
107
then
108
   MF_HAVE_UINTPTR_T=1
109
else
110
   AC_TRY_COMPILE([#include ], [uintptr_t k = 0;],
111
        [MF_HAVE_UINTPTR_T=1], [MF_HAVE_UINTPTR_T=0])
112
fi
113
AC_SUBST(MF_HAVE_UINTPTR_T)
114
 
115
AC_CHECK_HEADERS(pthread.h)
116
 
117
AC_MSG_CHECKING([for thread model used by GCC])
118
target_thread_file=`$CC -v 2>&1 | sed -n 's/^Thread model: //p'`
119
AC_MSG_RESULT([$target_thread_file])
120
 
121
# We only support posix threads, or no threads at all.
122
posix_threads=
123
case ${target_thread_file} in
124
  posix)
125
    posix_threads=yes
126
    ;;
127
  single)
128
    ;;
129
  *)
130
    echo "${target_thread_file} is an unsupported thread package" 1>&2
131
    exit 1
132
    ;;
133
esac
134
 
135
AM_CONDITIONAL(LIBMUDFLAPTH, [test "x$posix_threads" != "x"])
136
if test "x$posix_threads" != "x"
137
then
138
        build_libmudflapth=1
139
else
140
        build_libmudflapth=0
141
fi
142
AC_SUBST(build_libmudflapth)
143
 
144
AC_CHECK_LIB(dl, dlsym)
145
 
146
AC_CHECK_FUNC(connect,, AC_CHECK_LIB(socket, connect))
147
AC_CHECK_FUNC(sched_yield,, AC_CHECK_LIB(rt, sched_yield))
148
 
149
# Calculate toolexeclibdir
150
# Also toolexecdir, though it's only used in toolexeclibdir
151
case ${version_specific_libs} in
152
  yes)
153
    # Need the gcc compiler version to know where to install libraries
154
    # and header files if --enable-version-specific-runtime-libs option
155
    # is selected.
156
    toolexecdir='$(libdir)/gcc/$(target_alias)'
157
    toolexeclibdir='$(toolexecdir)/$(gcc_version)$(MULTISUBDIR)'
158
    ;;
159
  no)
160
    if test -n "$with_cross_host" &&
161
       test x"$with_cross_host" != x"no"; then
162
      # Install a library built with a cross compiler in tooldir, not libdir.
163
      toolexecdir='$(exec_prefix)/$(target_alias)'
164
      toolexeclibdir='$(toolexecdir)/lib'
165
    else
166
      toolexecdir='$(libdir)/gcc-lib/$(target_alias)'
167
      toolexeclibdir='$(libdir)'
168
    fi
169
    multi_os_directory=`$CC -print-multi-os-directory`
170
    case $multi_os_directory in
171
      .) ;; # Avoid trailing /.
172
      *) toolexeclibdir=$toolexeclibdir/$multi_os_directory ;;
173
    esac
174
    ;;
175
esac
176
AC_SUBST(toolexecdir)
177
AC_SUBST(toolexeclibdir)
178
 
179
includedir=${toolexecdir}/include
180
AC_SUBST(includedir)
181
 
182
pthread_create_version='""'
183
if test "x$enable_shared" = "xyes" && test "x$posix_threads" != "x"; then
184
  # NB: don't check for -lpthread here, because then it would be
185
  # added to LIBS.  For the thread-unaware libmudflap.la, we don't
186
  # want it there.
187
 
188
  # glibc-related hacks.  dlsym() may pick the wrong version of
189
  # interposed functions like pthread_create on modern glibc.
190
  # We need to find the proper symbol version string, and use
191
  # the nonstandard dlvsym().
192
  AC_CHECK_FUNCS(dlvsym)
193
  AC_CHECK_TOOL(NM, nm)
194
  if test "x$ac_cv_have_dlvsym" != "x"; then
195
    # Try compiling a simple pthreads program.  Find the shared libraries it
196
    # ends up with.  Then use "nm" on those libraries to extract the
197
    # default symbol versioning suffix ("@@"), if any.  But that's tricky.
198
    # Rather, run nm on the resulting executable.  Unfortunately, autoconf
199
    # doesn't appear to have a macro that builds a test executable for
200
    # subsequent analysis ... so we do it by hand here.
201
    cat >> conftest.c << EOF
202
#include 
203
int main () { void *p = (void *) & pthread_create; return (int) p; }
204
EOF
205
    oldLIBS="$LIBS"
206
    LIBS="$LIBS -lpthread"
207
    pthread_create_version="\"\""
208
    AC_MSG_CHECKING(pthread_create symbol version)
209
    if eval $ac_link 2>&5 && test -s conftest${ac_exeext}; then
210
      version=`$NM conftest${ac_exeect} | grep 'pthread_create@@' | sed -e 's/^.*@@//'`
211
      if test "x$version" != "x"; then
212
        pthread_create_version="\"$version\""
213
      fi
214
    fi
215
    AC_MSG_RESULT($pthread_create_version)
216
    LIBS="$oldLIBS"
217
  fi
218
fi
219
AC_DEFINE_UNQUOTED(PTHREAD_CREATE_VERSION, $pthread_create_version, [pthread_create symbol version])
220
 
221
 
222
# Figure out whether the compiler supports "-ffunction-sections -fdata-sections",
223
# similarly to how libstdc++ does it
224
ac_test_CFLAGS="${CFLAGS+set}"
225
ac_save_CFLAGS="$CFLAGS"
226
 
227
# Check for -ffunction-sections -fdata-sections
228
AC_MSG_CHECKING([for gcc that supports -ffunction-sections -fdata-sections])
229
CFLAGS='-Werror -ffunction-sections -fdata-sections'
230
AC_TRY_COMPILE(, [int foo;], [ac_fdsections=yes], [ac_fdsections=no])
231
if test "$ac_test_CFLAGS" = set; then
232
  CFLAGS="$ac_save_CFLAGS"
233
else
234
  # this is the suspicious part
235
  CFLAGS=""
236
fi
237
if test x"$ac_fdsections" = x"yes"; then
238
  SECTION_FLAGS='-ffunction-sections -fdata-sections'
239
fi
240
AC_MSG_RESULT($ac_fdsections)
241
AC_SUBST(SECTION_FLAGS)
242
 
243
 
244
# Check for the name of the symbol used for the entry point.
245
AC_CACHE_CHECK([for the name of the symbol used for the entry point],
246
  [mudflap_cv_entry_point], [
247
for name in _start __start unknown; do
248
  AC_LINK_IFELSE([AC_LANG_PROGRAM([extern char $name@<:@@:>@;], [$name@<:@0@:>@ = 0;])],
249
                 [break])
250
done
251
mudflap_cv_entry_point="$name"])
252
if test "$mudflap_cv_entry_point" = unknown; then
253
  AC_MSG_ERROR([none of the known symbol names works])
254
fi
255
AC_DEFINE_UNQUOTED([ENTRY_POINT], [$mudflap_cv_entry_point],
256
  [Define to the name of the symbol used for the entry point.])
257
 
258
 
259
if test ${multilib} = yes; then
260
  multilib_arg="--enable-multilib"
261
else
262
  multilib_arg=
263
fi
264
 
265
# See if we support thread-local storage.
266
GCC_CHECK_TLS
267
GCC_CHECK_EMUTLS
268
 
269
AC_CONFIG_FILES([Makefile testsuite/Makefile testsuite/mfconfig.exp])
270
AC_OUTPUT

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