1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
|
# Process this file with autoconf to produce a configure script, like so:
# aclocal && autoconf && autoheader && automake
AC_PREREQ(2.64)
AC_INIT([GCC Quad-precision Math Library], 0.1,,[libquadmath])
AC_CONFIG_HEADER(config.h)
# Gets build, host, target, *_vendor, *_cpu, *_os, etc.
#
# You will slowly go insane if you do not grok the following fact: when
# building this library, the top-level /target/ becomes the library's /host/.
#
# configure then causes --target to default to --host, exactly like any
# other package using autoconf. Therefore, 'target' and 'host' will
# always be the same. This makes sense both for native and cross compilers
# just think about it for a little while. :-)
#
# Also, if this library is being configured as part of a cross compiler, the
# top-level configure script will pass the "real" host as $with_cross_host.
#
# Do not delete or change the following two lines. For why, see
# http://gcc.gnu.org/ml/libstdc++/2003-07/msg00451.html
AC_CANONICAL_SYSTEM
ACX_NONCANONICAL_TARGET
target_alias=${target_alias-$host_alias}
AC_SUBST(target_alias)
AM_INIT_AUTOMAKE([1.9.0 foreign subdir-objects no-dist -Wall -Wno-override -Werror])
AC_MSG_CHECKING([for --enable-version-specific-runtime-libs])
AC_ARG_ENABLE(version-specific-runtime-libs,
AS_HELP_STRING([--enable-version-specific-runtime-libs],
[specify that runtime libraries should be installed in a compiler-specific directory]),
[case "$enableval" in
yes) version_specific_libs=yes ;;
no) version_specific_libs=no ;;
*) AC_MSG_ERROR([Unknown argument to enable/disable version-specific libs]);;
esac],
[version_specific_libs=no])
AC_MSG_RESULT($version_specific_libs)
GCC_NO_EXECUTABLES
# See if makeinfo has been installed and is modern enough
# that we can use it.
ACX_CHECK_PROG_VER([MAKEINFO], [makeinfo], [--version],
[GNU texinfo.* \([0-9][0-9.]*\)],
[4.[4-9]*|4.[1-9][0-9]*|[5-9]*|[1-9][0-9]*])
AM_CONDITIONAL(BUILD_INFO, test $gcc_cv_prog_makeinfo_modern = "yes")
ACX_BUGURL([http://gcc.gnu.org/bugs.html])
# Configure libtool
AM_PROG_LIBTOOL
ACX_LT_HOST_FLAGS
AC_SUBST(enable_shared)
AC_SUBST(enable_static)
AM_MAINTAINER_MODE
AM_ENABLE_MULTILIB(, ..)
AC_LANG_C
# The same as in boehm-gc and libstdc++. Have to borrow it from there.
# We must force CC to /not/ be precious variables; otherwise
# the wrong, non-multilib-adjusted value will be used in multilibs.
# As a side effect, we have to subst CFLAGS ourselves.
m4_rename([_AC_ARG_VAR_PRECIOUS],[real_PRECIOUS])
m4_define([_AC_ARG_VAR_PRECIOUS],[])
AC_PROG_CC
m4_rename_force([real_PRECIOUS],[_AC_ARG_VAR_PRECIOUS])
AC_SUBST(CFLAGS)
AM_PROG_CC_C_O
if test "x$GCC" != "xyes"; then
AC_MSG_ERROR([libquadmath must be built with GCC])
fi
AC_PROG_CPP
# Calculate toolexeclibdir
# Also toolexecdir, though it's only used in toolexeclibdir
case ${version_specific_libs} in
yes)
# Need the gcc compiler version to know where to install libraries
# and header files if --enable-version-specific-runtime-libs option
# is selected.
toolexecdir='$(libdir)/gcc/$(target_alias)'
toolexeclibdir='$(toolexecdir)/$(gcc_version)$(MULTISUBDIR)'
;;
no)
if test -n "$with_cross_host" &&
test x"$with_cross_host" != x"no"; then
# Install a library built with a cross compiler in tooldir, not libdir.
toolexecdir='$(exec_prefix)/$(target_alias)'
toolexeclibdir='$(toolexecdir)/lib'
else
toolexecdir='$(libdir)/gcc-lib/$(target_alias)'
toolexeclibdir='$(libdir)'
fi
multi_os_directory=`$CC -print-multi-os-directory`
case $multi_os_directory in
.) ;; # Avoid trailing /.
*) toolexeclibdir=$toolexeclibdir/$multi_os_directory ;;
esac
;;
esac
AC_SUBST(toolexecdir)
AC_SUBST(toolexeclibdir)
# If available, sqrtl and cbrtl speed up the calculation -
# but they are not required
if test x$gcc_no_link != xyes; then
AC_CHECK_LIB([m],[sqrtl],[AC_DEFINE([HAVE_SQRTL],[1],[libm includes sqrtl])])
AC_CHECK_LIB([m],[cbrtl],[AC_DEFINE([HAVE_CBRTL],[1],[libm includes cbrtl])])
else
if test "x$ac_cv_lib_m_sqrtl" = x""yes; then
AC_DEFINE([HAVE_SQRTL],[1],[libm includes sqrtl])
fi
if test "x$ac_cv_lib_m_cbrtl" = x""yes; then
AC_DEFINE([HAVE_CBRTL],[1],[libm includes cbrtl])
fi
fi
# Check for symbol versioning (copied from libssp).
AC_MSG_CHECKING([whether symbol versioning is supported])
if test x$gcc_no_link = xyes; then
# If we cannot link, we cannot build shared libraries, so do not use
# symbol versioning.
quadmath_use_symver=no
else
save_LDFLAGS="$LDFLAGS"
LDFLAGS="$LDFLAGS -fPIC -shared -Wl,--version-script,./conftest.map"
cat > conftest.map <<EOF
FOO_1.0 {
global: *foo*; bar; local: *;
};
EOF
AC_TRY_LINK([int foo;],[],[quadmath_use_symver=gnu],[quadmath_use_symver=no])
if test x$quadmath_use_symver = xno; then
case "$target_os" in
solaris2*)
LDFLAGS="$save_LDFLAGS"
LDFLAGS="$LDFLAGS -fPIC -shared -Wl,-M,./conftest.map"
# Sun ld cannot handle wildcards and treats all entries as undefined.
cat > conftest.map <<EOF
FOO_1.0 {
global: foo; local: *;
};
EOF
AC_TRY_LINK([int foo;],[],[quadmath_use_symver=sun],[quadmath_use_symver=no])
;;
esac
fi
LDFLAGS="$save_LDFLAGS"
fi
AC_MSG_RESULT($quadmath_use_symver)
AM_CONDITIONAL(LIBQUAD_USE_SYMVER, [test "x$quadmath_use_symver" != xno])
AM_CONDITIONAL(LIBQUAD_USE_SYMVER_GNU, [test "x$quadmath_use_symver" = xgnu])
AM_CONDITIONAL(LIBQUAD_USE_SYMVER_SUN, [test "x$quadmath_use_symver" = xsun])
AC_CACHE_CHECK([whether __float128 is supported], [libquad_cv_have_float128],
[GCC_TRY_COMPILE_OR_LINK([
typedef _Complex float __attribute__((mode(TC))) __complex128;
__float128 foo (__float128 x)
{
__complex128 z1, z2;
z1 = x;
z2 = x / 7.Q;
z2 /= z1;
return (__float128) z2;
}
__float128 bar (__float128 x)
{
return x * __builtin_huge_valq ();
}
],[
foo (1.2Q);
bar (1.2Q);
],[
libquad_cv_have_float128=yes
],[
libquad_cv_have_float128=no
])])
AM_CONDITIONAL(BUILD_LIBQUADMATH, [test "x$libquad_cv_have_float128" = xyes])
AC_CACHE_SAVE
if test ${multilib} = yes; then
multilib_arg="--enable-multilib"
else
multilib_arg=
fi
# We would like our source tree to be readonly. However when releases or
# pre-releases are generated, the flex/bison generated files as well as the
# various formats of manuals need to be included along with the rest of the
# sources. Therefore we have --enable-generated-files-in-srcdir to do
# just that.
AC_MSG_CHECKING(generated-files-in-srcdir)
AC_ARG_ENABLE(generated-files-in-srcdir,
AS_HELP_STRING([--enable-generated-files-in-srcdir],
[put copies of generated files in source dir intended for creating source tarballs for users without texinfo bison or flex]),
[case "$enableval" in
yes) enable_generated_files_in_srcdir=yes ;;
no) enable_generated_files_in_srcdir=no ;;
*) AC_MSG_ERROR([Unknown argument to enable/disable version-specific libs]);;
esac],
[enable_generated_files_in_srcdir=no])
AC_MSG_RESULT($enable_generated_files_in_srcdir)
AM_CONDITIONAL(GENINSRC, test "$enable_generated_files_in_srcdir" = yes)
AC_CONFIG_FILES(Makefile)
AC_OUTPUT
|
