libstdc++-v3/crossconfig.m4

   1 dnl
   2 dnl This file contains details for non-native builds.
   3 dnl
   4
   5 AC_DEFUN([GLIBCXX_CROSSCONFIG],[
   6 # Base decisions on target environment.
   7 case "${host}" in
   8   arm*-*-symbianelf*)
   9     # This is a freestanding configuration; there is nothing to do here.
  10     ;;
  11
  12   avr*-*-*)
  13     AC_DEFINE(HAVE_ACOSF)
  14     AC_DEFINE(HAVE_ASINF)
  15     AC_DEFINE(HAVE_ATAN2F)
  16     AC_DEFINE(HAVE_ATANF)
  17     AC_DEFINE(HAVE_CEILF)
  18     AC_DEFINE(HAVE_COSF)
  19     AC_DEFINE(HAVE_COSHF)
  20     AC_DEFINE(HAVE_EXPF)
  21     AC_DEFINE(HAVE_FABSF)
  22     AC_DEFINE(HAVE_FLOORF)
  23     AC_DEFINE(HAVE_FMODF)
  24     AC_DEFINE(HAVE_FREXPF)
  25     AC_DEFINE(HAVE_SQRTF)
  26     AC_DEFINE(HAVE_HYPOTF)
  27     AC_DEFINE(HAVE_LDEXPF)
  28     AC_DEFINE(HAVE_LOG10F)
  29     AC_DEFINE(HAVE_LOGF)
  30     AC_DEFINE(HAVE_MODFF)
  31     AC_DEFINE(HAVE_POWF)
  32     AC_DEFINE(HAVE_SINF)
  33     AC_DEFINE(HAVE_SINHF)
  34     AC_DEFINE(HAVE_TANF)
  35     AC_DEFINE(HAVE_TANHF)
  36     ;;
  37
  38   mips*-sde-elf*)
  39     # These definitions are for the SDE C library rather than newlib.
  40     SECTION_FLAGS='-ffunction-sections -fdata-sections'
  41     AC_SUBST(SECTION_FLAGS)
  42     GLIBCXX_CHECK_COMPILER_FEATURES
  43     GLIBCXX_CHECK_LINKER_FEATURES
  44     GLIBCXX_CHECK_MATH_SUPPORT
  45     GLIBCXX_CHECK_STDLIB_SUPPORT
  46
  47     AC_DEFINE(HAVE_FINITE)
  48     AC_DEFINE(HAVE_HYPOT)
  49     AC_DEFINE(HAVE_ISNAN)
  50     AC_DEFINE(HAVE_ISINF)
  51
  52     AC_DEFINE(HAVE_LDEXPF)
  53     AC_DEFINE(HAVE_MODF)
  54     AC_DEFINE(HAVE_SQRTF)
  55     ;;
  56
  57   *-aix*)
  58     GLIBCXX_CHECK_LINKER_FEATURES
  59     GLIBCXX_CHECK_MATH_SUPPORT
  60     GLIBCXX_CHECK_STDLIB_SUPPORT
  61     AC_DEFINE(_GLIBCXX_USE_DEV_RANDOM)
  62     AC_DEFINE(_GLIBCXX_USE_RANDOM_TR1)
  63     # We don't yet support AIX's TLS ABI.
  64     #GCC_CHECK_TLS
  65     AM_ICONV
  66     ;;
  67
  68   *-darwin*)
  69     # Darwin versions vary, but the linker should work in a cross environment,
  70     # so we just check for all the features here.
  71     # Check for available headers.
  72
  73     # Don't call GLIBCXX_CHECK_LINKER_FEATURES, Darwin doesn't have a GNU ld
  74     GLIBCXX_CHECK_MATH_SUPPORT
  75     GLIBCXX_CHECK_STDLIB_SUPPORT
  76     ;;
  77
  78   *djgpp)
  79     # GLIBCXX_CHECK_MATH_SUPPORT
  80     AC_DEFINE(HAVE_ISINF)
  81     AC_DEFINE(HAVE_ISNAN)
  82     AC_DEFINE(HAVE_FINITE)
  83     AC_DEFINE(HAVE_SINCOS)
  84     AC_DEFINE(HAVE_HYPOT)
  85     ;;
  86
  87   *-freebsd*)
  88     SECTION_FLAGS='-ffunction-sections -fdata-sections'
  89     AC_SUBST(SECTION_FLAGS)
  90     GLIBCXX_CHECK_LINKER_FEATURES
  91     AC_DEFINE(HAVE_SETENV)
  92     AC_DEFINE(HAVE_FINITEF)
  93     AC_DEFINE(HAVE_FINITE)
  94     AC_DEFINE(HAVE_FREXPF)
  95     AC_DEFINE(HAVE_HYPOT)
  96     AC_DEFINE(HAVE_HYPOTF)
  97     AC_DEFINE(HAVE_ISINF)
  98     AC_DEFINE(HAVE_ISNAN)
  99     AC_DEFINE(HAVE_ISNANF)
 100
 101     AC_DEFINE(HAVE_ACOSF)
 102     AC_DEFINE(HAVE_ASINF)
 103     AC_DEFINE(HAVE_ATAN2F)
 104     AC_DEFINE(HAVE_ATANF)
 105     AC_DEFINE(HAVE_CEILF)
 106     AC_DEFINE(HAVE_COSF)
 107     AC_DEFINE(HAVE_COSHF)
 108     AC_DEFINE(HAVE_EXPF)
 109     AC_DEFINE(HAVE_FABSF)
 110     AC_DEFINE(HAVE_FLOORF)
 111     AC_DEFINE(HAVE_FMODF)
 112     AC_DEFINE(HAVE_FREXPF)
 113     AC_DEFINE(HAVE_LDEXPF)
 114     AC_DEFINE(HAVE_LOG10F)
 115     AC_DEFINE(HAVE_LOGF)
 116     AC_DEFINE(HAVE_MODFF)
 117     AC_DEFINE(HAVE_POWF)
 118     AC_DEFINE(HAVE_SINF)
 119     AC_DEFINE(HAVE_SINHF)
 120     AC_DEFINE(HAVE_SQRTF)
 121     AC_DEFINE(HAVE_TANF)
 122     AC_DEFINE(HAVE_TANHF)
 123     if test x"long_double_math_on_this_cpu" = x"yes"; then
 124       AC_DEFINE(HAVE_FINITEL)
 125       AC_DEFINE(HAVE_ISINFL)
 126       AC_DEFINE(HAVE_ISNANL)
 127     fi
 128     AC_CHECK_FUNCS(__cxa_thread_atexit)
 129     AC_CHECK_FUNCS(aligned_alloc posix_memalign memalign _aligned_malloc)
 130     AC_CHECK_FUNCS(timespec_get)
 131     AC_CHECK_FUNCS(sockatmark)
 132     ;;
 133
 134   *-fuchsia*)
 135     SECTION_FLAGS='-ffunction-sections -fdata-sections'
 136     AC_SUBST(SECTION_FLAGS)
 137     ;;
 138
 139   *-hpux*)
 140     SECTION_FLAGS='-ffunction-sections -fdata-sections'
 141     AC_SUBST(SECTION_FLAGS)
 142     GLIBCXX_CHECK_LINKER_FEATURES
 143
 144     # GLIBCXX_CHECK_MATH_SUPPORT
 145     AC_DEFINE(HAVE_ISNAN)
 146     AC_DEFINE(HAVE_HYPOT)
 147     AC_DEFINE(HAVE_ACOSF)
 148     AC_DEFINE(HAVE_ASINF)
 149     AC_DEFINE(HAVE_ATANF)
 150     AC_DEFINE(HAVE_COSF)
 151     AC_DEFINE(HAVE_COSHF)
 152     AC_DEFINE(HAVE_SINF)
 153     AC_DEFINE(HAVE_SINHF)
 154     AC_DEFINE(HAVE_TANF)
 155     AC_DEFINE(HAVE_TANHF)
 156     AC_DEFINE(HAVE_EXPF)
 157     AC_DEFINE(HAVE_ATAN2F)
 158     AC_DEFINE(HAVE_FABSF)
 159     AC_DEFINE(HAVE_FMODF)
 160     AC_DEFINE(HAVE_FREXPF)
 161     AC_DEFINE(HAVE_LOGF)
 162     AC_DEFINE(HAVE_LOG10F)
 163     AC_DEFINE(HAVE_MODF)
 164     AC_DEFINE(HAVE_POWF)
 165     AC_DEFINE(HAVE_SQRTF)
 166
 167     # GLIBCXX_CHECK_STDLIB_SUPPORT
 168     AC_DEFINE(HAVE_STRTOLD)
 169
 170     GCC_CHECK_TLS
 171     case "$target" in
 172       *-hpux10*)
 173         AC_DEFINE(HAVE_ISINF)
 174         AC_DEFINE(HAVE_ISINFF)
 175         AC_DEFINE(HAVE_ISNANF)
 176         AC_DEFINE(HAVE_FINITE)
 177         AC_DEFINE(HAVE_FINITEF)
 178         ;;
 179     esac
 180     ;;
 181   *-linux* | *-uclinux* | *-gnu* | *-kfreebsd*-gnu | *-cygwin* | *-solaris*)
 182     GLIBCXX_CHECK_COMPILER_FEATURES
 183     GLIBCXX_CHECK_LINKER_FEATURES
 184     GLIBCXX_CHECK_MATH_SUPPORT
 185     GLIBCXX_CHECK_STDLIB_SUPPORT
 186     AC_DEFINE(_GLIBCXX_USE_DEV_RANDOM)
 187     AC_DEFINE(_GLIBCXX_USE_RANDOM_TR1)
 188     GCC_CHECK_TLS
 189     AC_CHECK_FUNCS(__cxa_thread_atexit_impl)
 190     AC_CHECK_FUNCS(aligned_alloc posix_memalign memalign _aligned_malloc)
 191     AC_CHECK_FUNCS(timespec_get)
 192     AC_CHECK_FUNCS(sockatmark)
 193     AM_ICONV
 194     ;;
 195   *-mingw32*)
 196     GLIBCXX_CHECK_LINKER_FEATURES
 197     GLIBCXX_CHECK_MATH_SUPPORT
 198     GLIBCXX_CHECK_STDLIB_SUPPORT
 199     AC_CHECK_FUNCS(aligned_alloc posix_memalign memalign _aligned_malloc)
 200     AC_CHECK_FUNCS(_wfopen)
 201     ;;
 202   *-netbsd* | *-openbsd*)
 203     SECTION_FLAGS='-ffunction-sections -fdata-sections'
 204     AC_SUBST(SECTION_FLAGS)
 205     GLIBCXX_CHECK_LINKER_FEATURES
 206     AC_DEFINE(HAVE_FINITEF)
 207     AC_DEFINE(HAVE_FINITE)
 208     AC_DEFINE(HAVE_FREXPF)
 209     AC_DEFINE(HAVE_HYPOTF)
 210     AC_DEFINE(HAVE_ISINF)
 211     AC_DEFINE(HAVE_ISINFF)
 212     AC_DEFINE(HAVE_ISNAN)
 213     AC_DEFINE(HAVE_ISNANF)
 214     if test x"long_double_math_on_this_cpu" = x"yes"; then
 215       AC_DEFINE(HAVE_FINITEL)
 216       AC_DEFINE(HAVE_ISINFL)
 217       AC_DEFINE(HAVE_ISNANL)
 218     fi
 219     AC_CHECK_FUNCS(aligned_alloc posix_memalign memalign _aligned_malloc)
 220     AC_CHECK_FUNCS(timespec_get)
 221     AC_CHECK_FUNCS(sockatmark)
 222     ;;
 223   *-qnx6.1* | *-qnx6.2*)
 224     SECTION_FLAGS='-ffunction-sections -fdata-sections'
 225     AC_SUBST(SECTION_FLAGS)
 226     GLIBCXX_CHECK_LINKER_FEATURES
 227     AC_DEFINE(HAVE_COSF)
 228     AC_DEFINE(HAVE_COSL)
 229     AC_DEFINE(HAVE_COSHF)
 230     AC_DEFINE(HAVE_COSHL)
 231     AC_DEFINE(HAVE_LOGF)
 232     AC_DEFINE(HAVE_LOGL)
 233     AC_DEFINE(HAVE_LOG10F)
 234     AC_DEFINE(HAVE_LOG10L)
 235     AC_DEFINE(HAVE_SINF)
 236     AC_DEFINE(HAVE_SINL)
 237     AC_DEFINE(HAVE_SINHF)
 238     AC_DEFINE(HAVE_SINHL)
 239     ;;
 240   *-rtems*)
 241     GLIBCXX_CHECK_COMPILER_FEATURES
 242     GLIBCXX_CHECK_LINKER_FEATURES
 243     GLIBCXX_CHECK_MATH_SUPPORT
 244     GLIBCXX_CHECK_STDLIB_SUPPORT
 245     ;;
 246   *-tpf)
 247     SECTION_FLAGS='-ffunction-sections -fdata-sections'
 248     SECTION_LDFLAGS='-Wl,--gc-sections $SECTION_LDFLAGS'
 249     AC_SUBST(SECTION_FLAGS)
 250     AC_DEFINE(HAVE_FINITE)
 251     AC_DEFINE(HAVE_FINITEF)
 252     AC_DEFINE(HAVE_FREXPF)
 253     AC_DEFINE(HAVE_HYPOTF)
 254     AC_DEFINE(HAVE_ISINF)
 255     AC_DEFINE(HAVE_ISINFF)
 256     AC_DEFINE(HAVE_ISNAN)
 257     AC_DEFINE(HAVE_ISNANF)
 258     AC_DEFINE(HAVE_SINCOS)
 259     AC_DEFINE(HAVE_SINCOSF)
 260     if test x"long_double_math_on_this_cpu" = x"yes"; then
 261       AC_DEFINE(HAVE_FINITEL)
 262       AC_DEFINE(HAVE_HYPOTL)
 263       AC_DEFINE(HAVE_ISINFL)
 264       AC_DEFINE(HAVE_ISNANL)
 265     fi
 266     ;;
 267   *-*vms*)
 268     # Check for available headers.
 269     # Don't call GLIBCXX_CHECK_LINKER_FEATURES, VMS doesn't have a GNU ld
 270     GLIBCXX_CHECK_MATH_SUPPORT
 271     GLIBCXX_CHECK_STDLIB_SUPPORT
 272     ;;
 273   *-vxworks)
 274     AC_DEFINE(HAVE_ACOSF)
 275     AC_DEFINE(HAVE_ASINF)
 276     AC_DEFINE(HAVE_ATAN2F)
 277     AC_DEFINE(HAVE_ATANF)
 278     AC_DEFINE(HAVE_CEILF)
 279     AC_DEFINE(HAVE_COSF)
 280     AC_DEFINE(HAVE_COSHF)
 281     AC_DEFINE(HAVE_EXPF)
 282     AC_DEFINE(HAVE_FABSF)
 283     AC_DEFINE(HAVE_FLOORF)
 284     AC_DEFINE(HAVE_FMODF)
 285     AC_DEFINE(HAVE_HYPOT)
 286     AC_DEFINE(HAVE_LOG10F)
 287     AC_DEFINE(HAVE_LOGF)
 288     AC_DEFINE(HAVE_POWF)
 289     AC_DEFINE(HAVE_SINF)
 290     AC_DEFINE(HAVE_SINHF)
 291     AC_DEFINE(HAVE_SQRTF)
 292     AC_DEFINE(HAVE_TANF)
 293     AC_DEFINE(HAVE_TANHF)
 294
 295 dnl # Different versions and execution modes implement different
 296 dnl # subsets of these functions.  Instead of hard-coding, test for C
 297 dnl # declarations in headers.  The C primitives could be defined as
 298 dnl # macros, in which case the tests might fail, and we might have to
 299 dnl # switch to more elaborate tests.
 300     GLIBCXX_CHECK_MATH_DECLS([
 301       acosl asinl atan2l atanl ceill cosl coshl expl fabsl floorl fmodl
 302       frexpl ldexpl log10l logl modfl powl sinl sinhl sqrtl tanl tanhl hypotl
 303       ldexpf modff hypotf frexpf])
 304 dnl # sincosl is the only one missing here, compared with the *l
 305 dnl # functions in the list guarded by
 306 dnl # long_double_math_on_this_cpu in configure.ac, right after
 307 dnl # the expansion of the present macro.
 308     ;;
 309   *)
 310     AC_MSG_ERROR([No support for this host/target combination.])
 311    ;;
 312 esac
 313 ])
 314
 315
 316 dnl
 317 dnl Check to see if the (math function) argument passed is
 318 dnl declared when using the c compiler
 319 dnl
 320 dnl Define HAVE_CARGF etc if "cargf" is declared
 321 dnl
 322 dnl argument 1 is name of function to check
 323 dnl
 324 dnl ASSUMES argument is a math function
 325 dnl
 326 dnl GLIBCXX_CHECK_MATH_DECL
 327 AC_DEFUN([GLIBCXX_CHECK_MATH_DECL], [
 328   AC_CACHE_CHECK([for $1 declaration],
 329     [glibcxx_cv_func_$1_use], [
 330       AC_LANG_SAVE
 331       AC_LANG_C
 332       AC_TRY_COMPILE([
 333 #include <math.h>
 334 #ifdef HAVE_IEEEFP_H
 335 # include <ieeefp.h>
 336 #endif
 337 #undef $1
 338 ], [
 339   void (*f)(void) = (void (*)(void))$1;
 340 ], [glibcxx_cv_func_$1_use=yes
 341 ], [glibcxx_cv_func_$1_use=no])])
 342   if test "x$glibcxx_cv_func_$1_use" = xyes; then
 343     AC_DEFINE_UNQUOTED(AS_TR_CPP([HAVE_$1]))
 344   fi
 345 ])
 346
 347 dnl
 348 dnl Check to see whether multiple math functions are
 349 dnl declared when using the c compiler
 350 dnl
 351 dnl Define HAVE_CARGF HAVE_POWL etc if "cargf" and "powl"
 352 dnl are declared
 353 dnl
 354 dnl argument 1 is a word list naming function to check
 355 dnl
 356 dnl ASSUMES arguments are math functions
 357 dnl
 358 dnl GLIBCXX_CHECK_MATH_DECLS
 359 AC_DEFUN([GLIBCXX_CHECK_MATH_DECLS], [
 360   m4_foreach_w([glibcxx_func], [$1], [
 361     GLIBCXX_CHECK_MATH_DECL(glibcxx_func)
 362   ])
 363 ])