1# -*- Autoconf -*-
2# Process this file with autoconf to produce a configure script.
3
4AC_INIT([GNU Vtable Verification Runtime Library], 1.0,,[libvtv])
5#AC_INIT(package-unused, version-unused, libvtv)
6AC_CONFIG_SRCDIR([vtv_rts.h])
7
8AM_ENABLE_MULTILIB(, ..)
9
10# -------
11# Options
12# -------
13AC_MSG_CHECKING([for --enable-version-specific-runtime-libs])
14AC_ARG_ENABLE(version-specific-runtime-libs,
15[  --enable-version-specific-runtime-libs    Specify that runtime libraries should be installed in a compiler-specific directory ],
16[case "$enableval" in
17 yes) version_specific_libs=yes ;;
18 no)  version_specific_libs=no ;;
19 *)   AC_MSG_ERROR([Unknown argument to enable/disable version-specific libs]);;
20 esac],
21[version_specific_libs=no])
22AC_MSG_RESULT($version_specific_libs)
23
24# Do not delete or change the following two lines.  For why, see
25# http://gcc.gnu.org/ml/libstdc++/2003-07/msg00451.html
26AC_CANONICAL_SYSTEM
27target_alias=${target_alias-$host_alias}
28AC_SUBST(target_alias)
29GCC_LIBSTDCXX_RAW_CXX_FLAGS
30
31AC_USE_SYSTEM_EXTENSIONS
32
33# Use same top-level configure hooks in libgcc/libstdc++/libvtv.
34AC_MSG_CHECKING([for --enable-vtable-verify])
35AC_ARG_ENABLE(vtable-verify,
36[  --enable-vtable-verify    Enable vtable verification feature ],
37[case "$enableval" in
38 yes) enable_vtable_verify=yes ;;
39 no)  enable_vtable_verify=no ;;
40 *)   enable_vtable_verify=no;;
41 esac],
42[enable_vtable_verify=no])
43AC_MSG_RESULT($enable_vtable_verify)
44
45# See if supported.
46unset VTV_SUPPORTED
47AC_MSG_CHECKING([for host support for vtable verification])
48. ${srcdir}/configure.tgt
49case ${host} in
50  *-*-solaris2*)
51    # libvtv requires init priority support, which depends on the linker
52    # used on Solaris.
53    AC_CACHE_CHECK(for init priority support, libvtv_cv_init_priority, [
54    AC_COMPILE_IFELSE([AC_LANG_PROGRAM(,
55      [[void ip (void) __attribute__ ((constructor (1)));]])],
56      [libgcc_cv_init_priority=yes],[libgcc_cv_init_priority=no])])
57    if test x$libvtv_cv_init_priority = xno; then
58      VTV_SUPPORTED=no
59    fi
60    # FIXME: Maybe check for dl_iterate_phdr, too?  Should be covered by
61    # configure.tgt restricting to libvtv to Solaris 11+.
62    ;;
63esac
64AC_MSG_RESULT($VTV_SUPPORTED)
65
66# Decide if it's usable.
67use_vtable_verify=no
68if test "x$VTV_SUPPORTED" = "xyes"; then
69  if test "x$enable_vtable_verify" = "xyes"; then
70    use_vtable_verify=yes
71    AC_MSG_NOTICE(using vtable verification)
72  fi
73fi
74AM_CONDITIONAL(ENABLE_VTABLE_VERIFY, test $use_vtable_verify = yes)
75
76AM_INIT_AUTOMAKE(foreign no-dist)
77AM_MAINTAINER_MODE
78
79LIBVTV_CONFIGURE
80
81GCC_WITH_TOOLEXECLIBDIR
82
83# Calculate toolexeclibdir
84# Also toolexecdir, though it's only used in toolexeclibdir
85case ${version_specific_libs} in
86  yes)
87    # Need the gcc compiler version to know where to install libraries
88    # and header files if --enable-version-specific-runtime-libs option
89    # is selected.
90    toolexecdir='$(libdir)/gcc/$(target_alias)'
91    toolexeclibdir='$(toolexecdir)/$(gcc_version)$(MULTISUBDIR)'
92    ;;
93  no)
94    if test -n "$with_cross_host" &&
95       test x"$with_cross_host" != x"no"; then
96      # Install a library built with a cross compiler in tooldir, not libdir.
97      toolexecdir='$(exec_prefix)/$(target_alias)'
98      case ${with_toolexeclibdir} in
99	no)
100	  toolexeclibdir='$(toolexecdir)/lib'
101	  ;;
102	*)
103	  toolexeclibdir=${with_toolexeclibdir}
104	  ;;
105      esac
106    else
107      toolexecdir='$(libdir)/gcc-lib/$(target_alias)'
108      toolexeclibdir='$(libdir)'
109    fi
110    multi_os_directory=`$CC -print-multi-os-directory`
111    case $multi_os_directory in
112      .) ;; # Avoid trailing /.
113      *) toolexeclibdir=$toolexeclibdir/$multi_os_directory ;;
114    esac
115    ;;
116esac
117AC_SUBST(toolexecdir)
118AC_SUBST(toolexeclibdir)
119
120AC_GNU_SOURCE
121AC_CHECK_FUNCS([__secure_getenv])
122
123AC_GNU_SOURCE
124AC_CHECK_FUNCS([secure_getenv])
125
126AC_CHECK_FUNCS([getexecname __fortify_fail])
127
128# Check for programs.
129m4_rename([_AC_ARG_VAR_PRECIOUS],[real_PRECIOUS])
130m4_define([_AC_ARG_VAR_PRECIOUS],[])
131AC_PROG_CC
132AC_PROG_CXX
133m4_rename_force([real_PRECIOUS],[_AC_ARG_VAR_PRECIOUS])
134
135AM_PROG_CC_C_O
136
137AC_SUBST(CFLAGS)
138AC_SUBST(CXXFLAGS)
139
140# Newer automakes demand CCAS and CCASFLAGS.
141: ${CCAS='$(CC)'}
142: ${CCASFLAGS='$(CFLAGS)'}
143AC_SUBST(CCAS)
144AC_SUBST(CCASFLAGS)
145
146AC_CHECK_TOOL(AS, as)
147AC_CHECK_TOOL(AR, ar)
148AC_CHECK_TOOL(RANLIB, ranlib, :)
149
150# Configure libtool
151AC_LIBTOOL_DLOPEN
152AM_PROG_LIBTOOL
153ACX_LT_HOST_FLAGS
154AC_SUBST(enable_shared)
155AC_SUBST(enable_static)
156
157# For libtool versioning info, format is CURRENT:REVISION:AGE
158libtool_VERSION=1:0:0
159AC_SUBST(libtool_VERSION)
160
161XCFLAGS="-D_GNU_SOURCE -Wall -Wextra -fno-exceptions"
162
163# Add CET specific flags if Intel CET is enabled.
164GCC_CET_FLAGS(CET_FLAGS)
165XCFLAGS="$XCFLAGS $CET_FLAGS"
166
167AC_SUBST(XCFLAGS)
168
169if test "${multilib}" = "yes"; then
170  multilib_arg="--enable-multilib"
171else
172  multilib_arg=
173fi
174
175AC_CONFIG_FILES([Makefile])
176
177if test "x$VTV_SUPPORTED" = "xyes"; then
178  AC_CONFIG_FILES(AC_FOREACH([DIR], [testsuite], [DIR/Makefile ]),
179    [cat > vpsed$$ << \_EOF
180s!`test -f '$<' || echo '$(srcdir)/'`!!
181_EOF
182    sed -f vpsed$$ $ac_file > tmp$$
183    mv tmp$$ $ac_file
184    rm vpsed$$
185    echo 'MULTISUBDIR =' >> $ac_file
186    ml_norecursion=yes
187    . ${multi_basedir}/config-ml.in
188    AS_UNSET([ml_norecursion])
189])
190fi
191
192case "$target_os" in
193  cygwin*|mingw32*)
194    vtv_cygmin="yes"
195    ;;
196  *)
197    vtv_cygmin="no"
198    ;;
199esac
200
201AM_CONDITIONAL(VTV_CYGMIN, test $vtv_cygmin = yes)
202
203AC_CHECK_FUNCS([_obstack_begin])
204AM_CONDITIONAL(VTV_NO_OBSTACK, test $ac_cv_func__obstack_begin = no)
205
206# Determine what GCC version number to use in filesystem paths.
207GCC_BASE_VER
208
209AC_OUTPUT
210