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fa958513 DJ |
1 | dnl Process this file with autoconf to produce a configure script. |
2 | ||
3 | sinclude(../config/acx.m4) | |
4 | sinclude(../config/no-executables.m4) | |
5 | ||
6 | AC_PREREQ(2.59) | |
7 | AC_INIT([GNU C Runtime Library], 1.0,,[libgcc]) | |
8 | AC_CONFIG_SRCDIR([static-object.mk]) | |
9 | ||
10 | AC_ARG_WITH(target-subdir, | |
11 | [ --with-target-subdir=SUBDIR Configuring in a subdirectory for target]) | |
12 | AC_ARG_WITH(cross-host, | |
13 | [ --with-cross-host=HOST Configuring with a cross compiler]) | |
14 | AC_ARG_WITH(ld, | |
15 | [ --with-ld arrange to use the specified ld (full pathname)]) | |
16 | ||
17 | if test "${srcdir}" = "."; then | |
18 | if test -n "${with_build_subdir}"; then | |
19 | libgcc_topdir="${srcdir}/../.." | |
20 | with_target_subdir= | |
21 | elif test -z "${with_target_subdir}"; then | |
22 | libgcc_topdir="${srcdir}/.." | |
23 | else | |
24 | if test "${with_target_subdir}" != "."; then | |
25 | libgcc_topdir="${srcdir}/${with_multisrctop}../.." | |
26 | else | |
27 | libgcc_topdir="${srcdir}/${with_multisrctop}.." | |
28 | fi | |
29 | fi | |
30 | else | |
31 | libgcc_topdir="${srcdir}/.." | |
32 | fi | |
33 | AC_SUBST(libgcc_topdir) | |
34 | AC_CONFIG_AUX_DIR($libgcc_topdir) | |
35 | ||
36 | AC_ARG_ENABLE(shared, | |
37 | [ --disable-shared don't provide a shared libgcc], | |
38 | [ | |
39 | case $enable_shared in | |
40 | yes | no) ;; | |
41 | *) | |
42 | enable_shared=no | |
43 | IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS="${IFS}:," | |
44 | for pkg in $enableval; do | |
45 | if test "X$pkg" = "Xgcc" || test "X$pkg" = "Xlibgcc"; then | |
46 | enable_shared=yes | |
47 | fi | |
48 | done | |
49 | IFS="$ac_save_ifs" | |
50 | ;; | |
51 | esac | |
52 | ], [enable_shared=yes]) | |
53 | AC_SUBST(enable_shared) | |
54 | ||
d6efbf5a DJ |
55 | AC_MSG_CHECKING([for --enable-version-specific-runtime-libs]) |
56 | AC_ARG_ENABLE(version-specific-runtime-libs, | |
57 | [ --enable-version-specific-runtime-libs Specify that runtime libraries should be installed in a compiler-specific directory ], | |
58 | [case "$enableval" in | |
59 | yes) version_specific_libs=yes ;; | |
60 | no) version_specific_libs=no ;; | |
61 | *) AC_MSG_ERROR([Unknown argument to enable/disable version-specific libs]);; | |
62 | esac], | |
63 | [version_specific_libs=no]) | |
64 | AC_MSG_RESULT($version_specific_libs) | |
65 | ||
fa958513 DJ |
66 | AC_ARG_WITH(slibdir, |
67 | [ --with-slibdir=DIR shared libraries in DIR [LIBDIR]], | |
68 | slibdir="$with_slibdir", | |
d6efbf5a | 69 | if test "${version_specific_libs}" = yes; then |
fa958513 | 70 | slibdir='$(libsubdir)' |
d6efbf5a DJ |
71 | elif test -n "$with_cross_host" && test x"$with_cross_host" != x"no"; then |
72 | slibdir='$(exec_prefix)/$(host_noncanonical)/lib' | |
fa958513 DJ |
73 | else |
74 | slibdir='$(libdir)' | |
75 | fi) | |
76 | AC_SUBST(slibdir) | |
77 | ||
78 | AC_PROG_INSTALL | |
79 | ||
80 | AC_PROG_AWK | |
81 | # We need awk; bail out if it's missing. | |
82 | case ${AWK} in | |
83 | "") AC_MSG_ERROR([can't build without awk, bailing out]) ;; | |
84 | esac | |
85 | ||
86 | AC_CANONICAL_HOST | |
87 | ACX_NONCANONICAL_HOST | |
14e8fc8b | 88 | GCC_TOPLEV_SUBDIRS |
fa958513 DJ |
89 | |
90 | dnl These must be called before AM_PROG_LIBTOOL, because it may want | |
91 | dnl to call AC_CHECK_PROG. | |
92 | AC_CHECK_TOOL(AR, ar) | |
93 | AC_CHECK_TOOL(LIPO, lipo, :) | |
94 | AC_CHECK_TOOL(NM, nm) | |
95 | AC_CHECK_TOOL(RANLIB, ranlib, :) | |
96 | AC_CHECK_TOOL(STRIP, strip, :) | |
97 | AC_PROG_LN_S | |
98 | ||
99 | GCC_NO_EXECUTABLES | |
100 | AC_PROG_CC | |
101 | AC_PROG_CPP_WERROR | |
102 | ||
103 | # Check for decimal float support. | |
104 | AC_CACHE_CHECK([whether decimal floating point is supported], [libgcc_cv_dfp], | |
105 | [AC_COMPILE_IFELSE([_Decimal32 x;], [libgcc_cv_dfp=yes], | |
106 | [libgcc_cv_dfp=no])]) | |
107 | decimal_float=$libgcc_cv_dfp | |
108 | AC_SUBST(decimal_float) | |
109 | ||
79b87c74 MM |
110 | AC_ARG_ENABLE(decimal-float, |
111 | [ --enable-decimal-float={no,yes,bid,dpd} | |
112 | enable decimal float extension to C. Selecting 'bid' | |
113 | or 'dpd' choses which decimal floating point format | |
114 | to use], | |
115 | [ | |
116 | case $enable_decimal_float in | |
117 | yes | no | bid | dpd) ;; | |
118 | *) AC_MSG_ERROR(['$enable_decimal_float' is an invalid value for --enable-decimal-float. | |
119 | Valid choices are 'yes', 'bid', 'dpd', and 'no'.]) ;; | |
120 | esac | |
121 | ], | |
122 | [ | |
123 | case $target in | |
124 | powerpc*-*-linux* | i?86*-*-linux* | x86_64*-*-linux*) | |
125 | enable_decimal_float=yes | |
126 | ;; | |
127 | *) | |
128 | enable_decimal_float=no | |
129 | ;; | |
130 | esac | |
131 | ]) | |
132 | ||
133 | # x86's use BID format instead of DPD | |
134 | if test x$enable_decimal_float = xyes; then | |
135 | case $target in | |
136 | i?86*-*-linux* | x86_64*-*-linux*) | |
137 | enable_decimal_float=bid | |
138 | ;; | |
139 | *) | |
140 | enable_decimal_float=dpd | |
141 | ;; | |
142 | esac | |
143 | fi | |
144 | AC_SUBST(enable_decimal_float) | |
145 | ||
fa958513 DJ |
146 | # Collect host-machine-specific information. |
147 | . ${srcdir}/config.host | |
148 | ||
149 | # Check for visibility support. This is after config.host so that | |
150 | # we can check for asm_hidden_op. | |
151 | AC_CACHE_CHECK([for __attribute__((visibility("hidden")))], | |
152 | libgcc_cv_hidden_visibility_attribute, [ | |
153 | echo 'int __attribute__ ((visibility ("hidden"))) foo (void) { return 1; }' > conftest.c | |
154 | libgcc_cv_hidden_visibility_attribute=no | |
155 | if AC_TRY_COMMAND(${CC-cc} -Werror -S conftest.c -o conftest.s 1>&AS_MESSAGE_LOG_FD); then | |
156 | if grep "\\$asm_hidden_op.*foo" conftest.s >/dev/null; then | |
157 | libgcc_cv_hidden_visibility_attribute=yes | |
158 | fi | |
159 | fi | |
160 | rm -f conftest.* | |
161 | ]) | |
162 | ||
163 | if test $libgcc_cv_hidden_visibility_attribute = yes; then | |
164 | vis_hide='-fvisibility=hidden -DHIDE_EXPORTS' | |
165 | else | |
166 | vis_hide= | |
167 | fi | |
168 | AC_SUBST(vis_hide) | |
169 | ||
170 | # Conditionalize the makefile for this target machine. | |
171 | tmake_file_= | |
172 | for f in ${tmake_file} | |
173 | do | |
174 | if test -f ${srcdir}/config/$f | |
175 | then | |
176 | tmake_file_="${tmake_file_} \$(srcdir)/config/$f" | |
177 | fi | |
178 | done | |
179 | tmake_file="${tmake_file_}" | |
180 | AC_SUBST(tmake_file) | |
181 | ||
182 | # Substitute configuration variables | |
183 | AC_SUBST(extra_parts) | |
184 | AC_SUBST(asm_hidden_op) | |
185 | ||
186 | # We need multilib support. | |
187 | AC_CONFIG_FILES([Makefile]) | |
188 | AC_CONFIG_COMMANDS([default], | |
189 | [[test -z "$CONFIG_HEADERS" || echo timestamp > stamp-h | |
190 | if test -n "$CONFIG_FILES"; then | |
191 | # FIXME: We shouldn't need to set ac_file | |
192 | ac_file=Makefile | |
193 | . ${libgcc_topdir}/config-ml.in | |
194 | fi]], | |
195 | [[srcdir=${srcdir} | |
196 | host=${host} | |
197 | target=${target} | |
198 | with_target_subdir=${with_target_subdir} | |
199 | with_multisubdir=${with_multisubdir} | |
200 | ac_configure_args="--enable-multilib ${ac_configure_args}" | |
201 | CONFIG_SHELL=${CONFIG_SHELL-/bin/sh} | |
202 | libgcc_topdir=${libgcc_topdir} | |
203 | CC="${CC}" | |
204 | ]]) | |
205 | AC_OUTPUT |