Remove duplicate definitions of the md_atof() function
[binutils.git] / gold / configure.ac
blobd8f71dfcb65a2f52286a679ea021982873df5739
1 dnl Process this file with autoconf to produce a configure script.
3 AC_PREREQ(2.59)
5 AC_INIT(gold, 0.1)
6 AC_CONFIG_SRCDIR(gold.cc)
8 AC_CANONICAL_TARGET
10 AM_INIT_AUTOMAKE
12 AM_CONFIG_HEADER(config.h:config.in)
14 AC_ARG_WITH(sysroot,
15 [  --with-sysroot[=DIR]    search for usr/lib et al within DIR],
16 [sysroot=$withval], [sysroot=no])
18 if test "$sysroot" = "yes"; then
19   sysroot='${exec_prefix}/${target_alias}/sys-root'
20 elif test "$sysroot" = "no"; then
21   sysroot=
24 sysroot_relocatable=0
25 if test -n "$sysroot"; then
26   case "sysroot" in
27     "${prefix}" | "${prefix}/"* | \
28     "${exec_prefix}" | "${exec_prefix}/"* | \
29     '${prefix}' | '${prefix}/'*| \
30     '${exec_prefix}' | '${exec_prefix}/'*)
31       sysroot_relocatable=1
32       ;;
33   esac
36 AC_DEFINE_UNQUOTED(TARGET_SYSTEM_ROOT, "$sysroot",
37   [System root for target files])
38 AC_DEFINE_UNQUOTED(TARGET_SYSTEM_ROOT_RELOCATABLE, $sysroot_relocatable,
39   [Whether the system root can be relocated])
41 dnl For now threads are a configure time option.
42 AC_ARG_ENABLE([threads],
43 [  --enable-threads        multi-threaded linking],
44 [case "${enableval}" in
45   yes | "") threads=yes ;;
46   no) threads=no ;;
47   *) threads=yes ;;
48  esac],
49 [threads=no])
50 if test "$threads" = "yes"; then
51   AC_DEFINE(ENABLE_THREADS, 1,
52             [Define to do multi-threaded linking])
54 AM_CONDITIONAL(THREADS, test "$threads" = "yes")
56 AC_ARG_ENABLE([targets],
57 [  --enable-targets        alternative target configurations],
58 [case "${enableval}" in
59   yes | "")
60     AC_MSG_ERROR([--enable-targets option must specify target names or 'all'])
61     ;;
62   no)
63     enable_targets=
64     ;;
65   *)
66     enable_targets=$enableval
67     ;;
68 esac],
69 [# For now, enable all targets by default
70  enable_targets=all
73 # Canonicalize the enabled targets.
74 if test -n "$enable_targets"; then
75   for targ in `echo $enable_targets | sed -e 's/,/ /g'`; do
76     result=`$ac_config_sub $targ 2>/dev/null`
77     if test -n "$result"; then
78       canon_targets="$canon_targets $result"
79     else
80       # Permit unrecognized target names, like "all".
81       canon_targets="$canon_targets $targ"
82     fi
83   done
86 # See which specific instantiations we need.
87 targetobjs=
88 all_targets=
89 for targ in $target $canon_targets; do
90   targ_32_little=
91   targ_32_big=
92   targ_64_little=
93   targ_64_big=
94   if test "$targ" = "all"; then
95     targ_32_little=yes
96     targ_32_big=yes
97     targ_64_little=yes
98     targ_64_big=yes
99     all_targets=yes
100   else
101     case "$targ" in
102     i?86-*)
103       targ_32_little=yes
104       targetobjs="$targetobjs i386.\$(OBJEXT)"
105       ;;
106     x86_64-*)
107       targ_64_little=yes
108       targetobjs="$targetobjs x86_64.\$(OBJEXT)"
109       ;;
110     *)
111       AC_MSG_ERROR("unsupported target $targ")
112       ;;
113     esac
114   fi
115 done
117 if test -n "$targ_32_little"; then
118   AC_DEFINE(HAVE_TARGET_32_LITTLE, 1,
119               [Define to support 32-bit little-endian targets])
121 if test -n "$targ_32_big"; then
122   AC_DEFINE(HAVE_TARGET_32_BIG, 1,
123               [Define to support 32-bit big-endian targets])
125 if test -n "$targ_64_little"; then
126   AC_DEFINE(HAVE_TARGET_64_LITTLE, 1,
127               [Define to support 64-bit little-endian targets])
129 if test -n "$targ_64_big"; then
130   AC_DEFINE(HAVE_TARGET_64_BIG, 1,
131               [Define to support 64-bit big-endian targets])
134 if test -n "$all_targets"; then
135   TARGETOBJS='$(ALL_TARGETOBJS)'
136 else
137   TARGETOBJS="$targetobjs"
139 AC_SUBST(TARGETOBJS)
141 AC_PROG_CC
142 AC_PROG_CXX
143 AC_PROG_YACC
144 AC_PROG_RANLIB
145 AC_PROG_INSTALL
146 AC_PROG_LN_S
147 ZW_GNU_GETTEXT_SISTER_DIR
148 AM_PO_SUBDIRS
150 AC_C_BIGENDIAN
152 AC_EXEEXT
154 AM_CONDITIONAL(NATIVE_LINKER,
155   test "x$target_alias" = "x" -o "x$host_alias" = "x$target_alias")
156 AM_CONDITIONAL(GCC, test "$GCC" = yes)
158 dnl Some architectures do not support taking pointers of functions
159 dnl defined in shared libraries except in -fPIC mode.  We need to
160 dnl tell the unittest framework if we're compiling for one of those
161 dnl targets, so it doesn't try to run the tests that do that.
162 AM_CONDITIONAL(FN_PTRS_IN_SO_WITHOUT_PIC, [
163   case $target_cpu in
164     i?86) true;;
165     x86_64) false;;
166     *) true;;
167   esac])
169 dnl Test for __thread support.
170 AC_CACHE_CHECK([for thread support], [gold_cv_c_thread],
171 [AC_COMPILE_IFELSE([__thread int i = 1;],
172 [gold_cv_c_thread=yes], [gold_cv_c_thread=no])])
174 AM_CONDITIONAL(TLS, test "$gold_cv_c_thread" = "yes")
176 dnl On GNU/Linux TLS in static programs only works when using glibc
177 dnl 2.4 or later.
178 AC_CACHE_CHECK([for glibc >= 2.4], [gold_cv_lib_glibc24],
179 [AC_COMPILE_IFELSE([
180 #include <features.h>
181 #if !defined __GLIBC__
182 error
183 #elif __GLIBC__ < 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ < 4)
184 error
185 #endif
186 ], [gold_cv_lib_glibc24=yes], [gold_cv_lib_glibc24=no])])
188 AM_CONDITIONAL(STATIC_TLS, test "$gold_cv_lib_glibc24" = "yes")
190 AM_BINUTILS_WARNINGS
192 WARN_CXXFLAGS=`echo ${WARN_CFLAGS} | sed -e 's/-Wstrict-prototypes//' -e 's/-Wmissing-prototypes//'`
193 AC_SUBST(WARN_CXXFLAGS)
195 dnl Force support for large files by default.  This may need to be
196 dnl host dependent.  If build == host, we can check getconf LFS_CFLAGS.
197 LFS_CXXFLAGS="-D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64"
198 AC_SUBST(LFS_CXXFLAGS)
200 AC_REPLACE_FUNCS(pread)
202 AC_LANG_PUSH(C++)
204 AC_CHECK_HEADERS(tr1/unordered_set tr1/unordered_map)
205 AC_CHECK_HEADERS(ext/hash_map ext/hash_set)
206 AC_CHECK_FUNCS(mallinfo)
208 dnl Test whether the compiler can specify a member templates to call.
209 AC_CACHE_CHECK([template member calls], [gold_cv_c_membertemplates],
210 [AC_COMPILE_IFELSE([
211 class c { public: template<int i> void fn(); };
212 template<int i> void foo(c cv) { cv.fn<i>(); }
213 template void foo<1>(c cv);],
214 [gold_cv_c_membertemplates=yes], [gold_cv_c_membertemplates=no])])
216 if test "$gold_cv_c_membertemplates" = "yes"; then
217   AC_DEFINE(HAVE_MEMBER_TEMPLATE_SPECIFICATIONS, [],
218     [Whether the C++ compiler can call a template member with no arguments])
221 AC_LANG_POP(C++)
223 AM_MAINTAINER_MODE
225 AC_OUTPUT(Makefile testsuite/Makefile po/Makefile.in:po/Make-in)