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
81# Calculate toolexeclibdir
82# Also toolexecdir, though it's only used in toolexeclibdir
83case ${version_specific_libs} in
84  yes)
85    # Need the gcc compiler version to know where to install libraries
86    # and header files if --enable-version-specific-runtime-libs option
87    # is selected.
88    toolexecdir='$(libdir)/gcc/$(target_alias)'
89    toolexeclibdir='$(toolexecdir)/$(gcc_version)$(MULTISUBDIR)'
90    ;;
91  no)
92    if test -n "$with_cross_host" &&
93       test x"$with_cross_host" != x"no"; then
94      # Install a library built with a cross compiler in tooldir, not libdir.
95      toolexecdir='$(exec_prefix)/$(target_alias)'
96      toolexeclibdir='$(toolexecdir)/lib'
97    else
98      toolexecdir='$(libdir)/gcc-lib/$(target_alias)'
99      toolexeclibdir='$(libdir)'
100    fi
101    multi_os_directory=`$CC -print-multi-os-directory`
102    case $multi_os_directory in
103      .) ;; # Avoid trailing /.
104      *) toolexeclibdir=$toolexeclibdir/$multi_os_directory ;;
105    esac
106    ;;
107esac
108AC_SUBST(toolexecdir)
109AC_SUBST(toolexeclibdir)
110
111AC_GNU_SOURCE
112AC_CHECK_FUNCS([__secure_getenv])
113
114AC_GNU_SOURCE
115AC_CHECK_FUNCS([secure_getenv])
116
117AC_CHECK_FUNCS([getexecname __fortify_fail])
118
119# Check for programs.
120m4_rename([_AC_ARG_VAR_PRECIOUS],[real_PRECIOUS])
121m4_define([_AC_ARG_VAR_PRECIOUS],[])
122AC_PROG_CC
123AC_PROG_CXX
124m4_rename_force([real_PRECIOUS],[_AC_ARG_VAR_PRECIOUS])
125
126AM_PROG_CC_C_O
127
128AC_SUBST(CFLAGS)
129AC_SUBST(CXXFLAGS)
130
131# Newer automakes demand CCAS and CCASFLAGS.
132: ${CCAS='$(CC)'}
133: ${CCASFLAGS='$(CFLAGS)'}
134AC_SUBST(CCAS)
135AC_SUBST(CCASFLAGS)
136
137AC_CHECK_TOOL(AS, as)
138AC_CHECK_TOOL(AR, ar)
139AC_CHECK_TOOL(RANLIB, ranlib, :)
140
141# Configure libtool
142AC_LIBTOOL_DLOPEN
143AM_PROG_LIBTOOL
144ACX_LT_HOST_FLAGS
145AC_SUBST(enable_shared)
146AC_SUBST(enable_static)
147
148# For libtool versioning info, format is CURRENT:REVISION:AGE
149libtool_VERSION=1:0:0
150AC_SUBST(libtool_VERSION)
151
152XCFLAGS="-D_GNU_SOURCE -Wall -Wextra -fno-exceptions"
153
154# Add CET specific flags if Intel CET is enabled.
155GCC_CET_FLAGS(CET_FLAGS)
156XCFLAGS="$XCFLAGS $CET_FLAGS"
157
158AC_SUBST(XCFLAGS)
159
160if test "${multilib}" = "yes"; then
161  multilib_arg="--enable-multilib"
162else
163  multilib_arg=
164fi
165
166AC_CONFIG_FILES([Makefile])
167
168if test "x$VTV_SUPPORTED" = "xyes"; then
169  AC_CONFIG_FILES(AC_FOREACH([DIR], [testsuite], [DIR/Makefile ]),
170    [cat > vpsed$$ << \_EOF
171s!`test -f '$<' || echo '$(srcdir)/'`!!
172_EOF
173    sed -f vpsed$$ $ac_file > tmp$$
174    mv tmp$$ $ac_file
175    rm vpsed$$
176    echo 'MULTISUBDIR =' >> $ac_file
177    ml_norecursion=yes
178    . ${multi_basedir}/config-ml.in
179    AS_UNSET([ml_norecursion])
180])
181fi
182
183case "$target_os" in
184  cygwin*|mingw32*)
185    vtv_cygmin="yes"
186    ;;
187  *)
188    vtv_cygmin="no"
189    ;;
190esac
191
192AM_CONDITIONAL(VTV_CYGMIN, test $vtv_cygmin = yes)
193
194AC_CHECK_FUNCS([_obstack_begin])
195AM_CONDITIONAL(VTV_NO_OBSTACK, test $ac_cv_func__obstack_begin = no)
196
197# Determine what GCC version number to use in filesystem paths.
198GCC_BASE_VER
199
200AC_OUTPUT
201