1# -*- Autoconf -*-
2# Process this file with autoconf to produce a configure script.
3
4AC_PREREQ([2.64])
5AC_INIT([GNU Vtable Verification Runtime Library], 1.0,,[libvtv])
6#AC_INIT(package-unused, version-unused, libvtv)
7AC_CONFIG_SRCDIR([vtv_rts.h])
8
9AM_ENABLE_MULTILIB(, ..)
10
11# -------
12# Options
13# -------
14AC_MSG_CHECKING([for --enable-version-specific-runtime-libs])
15AC_ARG_ENABLE(version-specific-runtime-libs,
16[  --enable-version-specific-runtime-libs    Specify that runtime libraries should be installed in a compiler-specific directory ],
17[case "$enableval" in
18 yes) version_specific_libs=yes ;;
19 no)  version_specific_libs=no ;;
20 *)   AC_MSG_ERROR([Unknown argument to enable/disable version-specific libs]);;
21 esac],
22[version_specific_libs=no])
23AC_MSG_RESULT($version_specific_libs)
24
25# Do not delete or change the following two lines.  For why, see
26# http://gcc.gnu.org/ml/libstdc++/2003-07/msg00451.html
27AC_CANONICAL_SYSTEM
28target_alias=${target_alias-$host_alias}
29AC_SUBST(target_alias)
30GCC_LIBSTDCXX_RAW_CXX_FLAGS
31
32AC_USE_SYSTEM_EXTENSIONS
33
34# Use same top-level configure hooks in libgcc/libstdc++/libvtv.
35AC_MSG_CHECKING([for --enable-vtable-verify])
36AC_ARG_ENABLE(vtable-verify,
37[  --enable-vtable-verify    Enable vtable verification feature ],
38[case "$enableval" in
39 yes) enable_vtable_verify=yes ;;
40 no)  enable_vtable_verify=no ;;
41 *)   enable_vtable_verify=no;;
42 esac],
43[enable_vtable_verify=no])
44AC_MSG_RESULT($enable_vtable_verify)
45
46# See if supported.
47unset VTV_SUPPORTED
48AC_MSG_CHECKING([for host support for vtable verification])
49. ${srcdir}/configure.tgt
50case ${host} in
51  *-*-solaris2*)
52    # libvtv requires init priority support, which depends on the linker
53    # used on Solaris.
54    AC_CACHE_CHECK(for init priority support, libvtv_cv_init_priority, [
55    AC_COMPILE_IFELSE([AC_LANG_PROGRAM(,
56      [[void ip (void) __attribute__ ((constructor (1)));]])],
57      [libgcc_cv_init_priority=yes],[libgcc_cv_init_priority=no])])
58    if test x$libvtv_cv_init_priority = xno; then
59      VTV_SUPPORTED=no
60    fi
61    # FIXME: Maybe check for dl_iterate_phdr, too?  Should be covered by
62    # configure.tgt restricting to libvtv to Solaris 11+.
63    ;;
64esac
65AC_MSG_RESULT($VTV_SUPPORTED)
66
67# Decide if it's usable.
68use_vtable_verify=no
69if test "x$VTV_SUPPORTED" = "xyes"; then
70  if test "x$enable_vtable_verify" = "xyes"; then
71    use_vtable_verify=yes
72    AC_MSG_NOTICE(using vtable verification)
73  fi
74fi
75AM_CONDITIONAL(ENABLE_VTABLE_VERIFY, test $use_vtable_verify = yes)
76
77AM_INIT_AUTOMAKE(foreign no-dist)
78AM_MAINTAINER_MODE
79
80LIBVTV_CONFIGURE
81
82# Calculate toolexeclibdir
83# Also toolexecdir, though it's only used in toolexeclibdir
84case ${version_specific_libs} in
85  yes)
86    # Need the gcc compiler version to know where to install libraries
87    # and header files if --enable-version-specific-runtime-libs option
88    # is selected.
89    toolexecdir='$(libdir)/gcc/$(target_alias)'
90    toolexeclibdir='$(toolexecdir)/$(gcc_version)$(MULTISUBDIR)'
91    ;;
92  no)
93    if test -n "$with_cross_host" &&
94       test x"$with_cross_host" != x"no"; then
95      # Install a library built with a cross compiler in tooldir, not libdir.
96      toolexecdir='$(exec_prefix)/$(target_alias)'
97      toolexeclibdir='$(toolexecdir)/lib'
98    else
99      toolexecdir='$(libdir)/gcc-lib/$(target_alias)'
100      toolexeclibdir='$(libdir)'
101    fi
102    multi_os_directory=`$CC -print-multi-os-directory`
103    case $multi_os_directory in
104      .) ;; # Avoid trailing /.
105      *) toolexeclibdir=$toolexeclibdir/$multi_os_directory ;;
106    esac
107    ;;
108esac
109AC_SUBST(toolexecdir)
110AC_SUBST(toolexeclibdir)
111
112AC_GNU_SOURCE
113AC_CHECK_FUNCS([__secure_getenv])
114
115AC_GNU_SOURCE
116AC_CHECK_FUNCS([secure_getenv])
117
118AC_CHECK_FUNCS([getexecname __fortify_fail])
119
120# Check for programs.
121m4_rename([_AC_ARG_VAR_PRECIOUS],[real_PRECIOUS])
122m4_define([_AC_ARG_VAR_PRECIOUS],[])
123AC_PROG_CC
124AC_PROG_CXX
125m4_rename_force([real_PRECIOUS],[_AC_ARG_VAR_PRECIOUS])
126
127AM_PROG_CC_C_O
128
129AC_SUBST(CFLAGS)
130AC_SUBST(CXXFLAGS)
131
132# Newer automakes demand CCAS and CCASFLAGS.
133: ${CCAS='$(CC)'}
134: ${CCASFLAGS='$(CFLAGS)'}
135AC_SUBST(CCAS)
136AC_SUBST(CCASFLAGS)
137
138AC_CHECK_TOOL(AS, as)
139AC_CHECK_TOOL(AR, ar)
140AC_CHECK_TOOL(RANLIB, ranlib, :)
141
142# Configure libtool
143AC_LIBTOOL_DLOPEN
144AM_PROG_LIBTOOL
145ACX_LT_HOST_FLAGS
146AC_SUBST(enable_shared)
147AC_SUBST(enable_static)
148
149# For libtool versioning info, format is CURRENT:REVISION:AGE
150libtool_VERSION=1:0:0
151AC_SUBST(libtool_VERSION)
152
153XCFLAGS="-D_GNU_SOURCE -Wall -Wextra -fno-exceptions"
154
155# Add CET specific flags if Intel CET is enabled.
156GCC_CET_FLAGS(CET_FLAGS)
157XCFLAGS="$XCFLAGS $CET_FLAGS"
158
159AC_SUBST(XCFLAGS)
160
161if test "${multilib}" = "yes"; then
162  multilib_arg="--enable-multilib"
163else
164  multilib_arg=
165fi
166
167AC_CONFIG_FILES([Makefile])
168
169if test "x$VTV_SUPPORTED" = "xyes"; then
170  AC_CONFIG_FILES(AC_FOREACH([DIR], [testsuite], [DIR/Makefile ]),
171    [cat > vpsed$$ << \_EOF
172s!`test -f '$<' || echo '$(srcdir)/'`!!
173_EOF
174    sed -f vpsed$$ $ac_file > tmp$$
175    mv tmp$$ $ac_file
176    rm vpsed$$
177    echo 'MULTISUBDIR =' >> $ac_file
178    ml_norecursion=yes
179    . ${multi_basedir}/config-ml.in
180    AS_UNSET([ml_norecursion])
181])
182fi
183
184case "$target_os" in
185  cygwin*|mingw32*)
186    vtv_cygmin="yes"
187    ;;
188  *)
189    vtv_cygmin="no"
190    ;;
191esac
192
193AM_CONDITIONAL(VTV_CYGMIN, test $vtv_cygmin = yes)
194
195AC_CHECK_FUNCS([_obstack_begin])
196AM_CONDITIONAL(VTV_NO_OBSTACK, test $ac_cv_func__obstack_begin = no)
197
198# Determine what GCC version number to use in filesystem paths.
199GCC_BASE_VER
200
201AC_OUTPUT
202