1 dnl This provides configure definitions used by all the newlib
2 dnl configure.in files.
4 dnl Basic newlib configury. This calls basic introductory stuff,
5 dnl including AM_INIT_AUTOMAKE and AC_CANONICAL_HOST. It also runs
6 dnl configure.host. The only argument is the relative path to the top
9 AC_DEFUN(NEWLIB_CONFIGURE,
11 dnl Default to --enable-multilib
12 AC_ARG_ENABLE(multilib,
13 [ --enable-multilib build many library versions (default)],
14 [case "${enableval}" in
17 *) AC_MSG_ERROR(bad value ${enableval} for multilib option) ;;
18 esac], [multilib=yes])dnl
20 dnl Support --enable-target-optspace
21 AC_ARG_ENABLE(target-optspace,
22 [ --enable-target-optspace optimize for space],
23 [case "${enableval}" in
24 yes) target_optspace=yes ;;
25 no) target_optspace=no ;;
26 *) AC_MSG_ERROR(bad value ${enableval} for target-optspace option) ;;
27 esac], [target_optspace=])dnl
29 dnl Support --enable-malloc-debugging - currently only supported for Cygwin
30 AC_ARG_ENABLE(malloc-debugging,
31 [ --enable-malloc-debugging indicate malloc debugging requested],
32 [case "${enableval}" in
33 yes) malloc_debugging=yes ;;
34 no) malloc_debugging=no ;;
35 *) AC_MSG_ERROR(bad value ${enableval} for malloc-debugging option) ;;
36 esac], [malloc_debugging=])dnl
38 dnl Support --enable-newlib-multithread
39 AC_ARG_ENABLE(newlib-multithread,
40 [ --enable-newlib-multithread enable support for multiple threads],
41 [case "${enableval}" in
42 yes) newlib_multithread=yes ;;
43 no) newlib_multithread=no ;;
44 *) AC_MSG_ERROR(bad value ${enableval} for newlib-multithread option) ;;
45 esac], [newlib_multithread=yes])dnl
47 dnl Support --enable-newlib-iconv
48 AC_ARG_ENABLE(newlib-iconv,
49 [ --enable-newlib-iconv enable iconv library support],
50 [if test "${newlib_iconv+set}" != set; then
51 case "${enableval}" in
52 yes) newlib_iconv=yes ;;
53 no) newlib_iconv=no ;;
54 *) AC_MSG_ERROR(bad value ${enableval} for newlib-iconv option) ;;
56 fi], [newlib_iconv=${newlib_iconv}])dnl
58 dnl Support --enable-newlib-elix-level
59 AC_ARG_ENABLE(newlib-elix-level,
60 [ --enable-newlib-elix-level supply desired elix library level (1-4)],
61 [case "${enableval}" in
62 0) newlib_elix_level=0 ;;
63 1) newlib_elix_level=1 ;;
64 2) newlib_elix_level=2 ;;
65 3) newlib_elix_level=3 ;;
66 4) newlib_elix_level=4 ;;
67 *) AC_MSG_ERROR(bad value ${enableval} for newlib-elix-level option) ;;
68 esac], [newlib_elix_level=0])dnl
70 dnl Support --disable-newlib-io-float
71 AC_ARG_ENABLE(newlib-io-float,
72 [ --disable-newlib-io-float disable printf/scanf family float support],
73 [case "${enableval}" in
74 yes) newlib_io_float=yes ;;
75 no) newlib_io_float=no ;;
76 *) AC_MSG_ERROR(bad value ${enableval} for newlib-io-float option) ;;
77 esac], [newlib_io_float=yes])dnl
79 dnl Support --disable-newlib-supplied-syscalls
80 AC_ARG_ENABLE(newlib-supplied-syscalls,
81 [ --disable-newlib-supplied-syscalls disable newlib from supplying syscalls],
82 [case "${enableval}" in
83 yes) newlib_may_supply_syscalls=yes ;;
84 no) newlib_may_supply_syscalls=no ;;
85 *) AC_MSG_ERROR(bad value ${enableval} for newlib-supplied-syscalls option) ;;
86 esac], [newlib_may_supply_syscalls=yes])dnl
88 AM_CONDITIONAL(MAY_SUPPLY_SYSCALLS, test x[$]{newlib_may_supply_syscalls} = xyes)
90 dnl We may get other options which we don't document:
91 dnl --with-target-subdir, --with-multisrctop, --with-multisubdir
93 test -z "[$]{with_target_subdir}" && with_target_subdir=.
95 if test "[$]{srcdir}" = "."; then
96 if test "[$]{with_target_subdir}" != "."; then
97 newlib_basedir="[$]{srcdir}/[$]{with_multisrctop}../$1"
99 newlib_basedir="[$]{srcdir}/[$]{with_multisrctop}$1"
102 newlib_basedir="[$]{srcdir}/$1"
104 AC_SUBST(newlib_basedir)
108 AM_INIT_AUTOMAKE(newlib, 1.13.0)
110 # FIXME: We temporarily define our own version of AC_PROG_CC. This is
111 # copied from autoconf 2.12, but does not call AC_PROG_CC_WORKS. We
112 # are probably using a cross compiler, which will not be able to fully
113 # link an executable. This should really be fixed in autoconf
116 AC_DEFUN(LIB_AC_PROG_CC,
117 [AC_BEFORE([$0], [AC_PROG_CPP])dnl
118 AC_CHECK_PROG(CC, gcc, gcc)
119 if test -z "$CC"; then
120 AC_CHECK_PROG(CC, cc, cc, , , /usr/ucb/cc)
121 test -z "$CC" && AC_MSG_ERROR([no acceptable cc found in \$PATH])
126 if test $ac_cv_prog_gcc = yes; then
128 dnl Check whether -g works, even if CFLAGS is set, in case the package
129 dnl plays around with CFLAGS (such as to build both debugging and
130 dnl normal versions of a library), tasteless as that idea is.
131 ac_test_CFLAGS="${CFLAGS+set}"
132 ac_save_CFLAGS="$CFLAGS"
135 if test "$ac_test_CFLAGS" = set; then
136 CFLAGS="$ac_save_CFLAGS"
137 elif test $ac_cv_prog_cc_g = yes; then
144 test "${CFLAGS+set}" = set || CFLAGS="-g"
150 AC_CHECK_TOOL(AS, as)
151 AC_CHECK_TOOL(AR, ar)
152 AC_CHECK_TOOL(RANLIB, ranlib, :)
158 # We need AC_EXEEXT to keep automake happy in cygnus mode. However,
159 # at least currently, we never actually build a program, so we never
160 # need to use $(EXEEXT). Moreover, the test for EXEEXT normally
161 # fails, because we are probably configuring with a cross compiler
162 # which can't create executables. So we include AC_EXEEXT to keep
163 # automake happy, but we don't execute it, since we don't care about
169 . [$]{newlib_basedir}/configure.host
171 newlib_cflags="[$]{newlib_cflags} -fno-builtin"
173 NEWLIB_CFLAGS=${newlib_cflags}
174 AC_SUBST(NEWLIB_CFLAGS)
179 AM_CONDITIONAL(ELIX_LEVEL_0, test x[$]{newlib_elix_level} = x0)
180 AM_CONDITIONAL(ELIX_LEVEL_1, test x[$]{newlib_elix_level} = x1)
181 AM_CONDITIONAL(ELIX_LEVEL_2, test x[$]{newlib_elix_level} = x2)
182 AM_CONDITIONAL(ELIX_LEVEL_3, test x[$]{newlib_elix_level} = x3)
183 AM_CONDITIONAL(ELIX_LEVEL_4, test x[$]{newlib_elix_level} = x4)
185 AM_CONDITIONAL(USE_LIBTOOL, test x[$]{use_libtool} = xyes)
187 # Hard-code OBJEXT. Normally it is set by AC_OBJEXT, but we
188 # use oext, which is set in configure.host based on the target platform.
195 AC_SUBST(libm_machine_dir)
196 AC_SUBST(machine_dir)