diff options
Diffstat (limited to 'aclocal.m4')
| -rw-r--r-- | aclocal.m4 | 118 |
1 files changed, 118 insertions, 0 deletions
diff --git a/aclocal.m4 b/aclocal.m4 new file mode 100644 index 0000000..651b0db --- /dev/null +++ b/aclocal.m4 @@ -0,0 +1,118 @@ +dnl ** Additional Autoconf tests for BIRD configure script +dnl ** (c) 1999 Martin Mares <mj@ucw.cz> + +AC_DEFUN(BIRD_CHECK_INTEGERS, +[AC_CHECK_SIZEOF(char, 0) +AC_CHECK_SIZEOF(short int, 0) +AC_CHECK_SIZEOF(int, 0) +AC_CHECK_SIZEOF(long int, 0) +for size in 1 2 4 ; do + bits=`expr $size "*" 8` + AC_MSG_CHECKING([for $bits-bit type]) + if test $ac_cv_sizeof_int = $size ; then + res=int + elif test $ac_cv_sizeof_char = $size ; then + res=char + elif test $ac_cv_sizeof_short_int = $size ; then + res="short int" + elif test $ac_cv_sizeof_long_int = $size ; then + res="long int" + else + AC_MSG_RESULT([not found]) + AC_MSG_ERROR([Cannot find $bits-bit integer type.]) + fi + AC_MSG_RESULT($res) + AC_DEFINE_UNQUOTED(INTEGER_$bits, $res) + done +]) + +AC_DEFUN(BIRD_CHECK_ENDIAN, +[AC_CACHE_CHECK([CPU endianity], bird_cv_c_endian,[ +AC_TRY_RUN([ +#include <stdio.h> + +unsigned int x = 0x12345678; +unsigned char *z = (unsigned char *) &x; + +int main(void) +{ + FILE *f = fopen("conftestresult", "w"); + if (!f) return 10; + fprintf(f, "%02x %02x %02x %02x", *z, *(z+1), *(z+2), *(z+3)); + fclose(f); + exit(0); +} +],[ + endian=`cat conftestresult` + if test "$endian" = "12 34 56 78" ; then + bird_cv_c_endian=big-endian + elif test "$endian" = "78 56 34 12" ; then + bird_cv_c_endian=little-endian + fi +],[endian="test program failed"],[endian="not available, we're cross compiling"]) +if test -z "$bird_cv_c_endian" ; then + AC_MSG_RESULT($endian) + AC_MSG_ERROR([Cannot determine CPU endianity.]) + fi +]) +case $bird_cv_c_endian in + big-endian) AC_DEFINE(CPU_BIG_ENDIAN) ;; + little-endian) AC_DEFINE(CPU_LITTLE_ENDIAN) ;; + esac +]) + +AC_DEFUN(BIRD_CHECK_STRUCT_ALIGN, +[AC_CACHE_CHECK([usual alignment of structures],bird_cv_c_struct_align,[ +AC_TRY_RUN([ +#include <stdio.h> + +struct { char x; long int y; } ary[2]; + +int main(void) +{ + FILE *f = fopen("conftestresult", "w"); + if (!f) return 10; + fprintf(f, "%d", sizeof(ary)/2); + fclose(f); + exit(0); +} +],[ +bird_cv_c_struct_align=`cat conftestresult` +],[ +AC_MSG_RESULT([test program failed]) +AC_MSG_ERROR([Cannot determine structure alignment]) +],[bird_cv_c_struct_align=16]) +]) +AC_DEFINE_UNQUOTED(CPU_STRUCT_ALIGN, $bird_cv_c_struct_align) +]) + +AC_DEFUN(BIRD_CHECK_TIME_T, +[AC_CACHE_CHECK([characteristics of time_t], bird_cv_type_time_t, [ +AC_TRY_RUN([ +#include <stdio.h> +#include <sys/time.h> +#include <limits.h> + +int main(void) +{ + FILE *f = fopen("conftestresult", "w"); + if (!f) return 10; + fprintf(f, "%d-bit ", sizeof(time_t)*CHAR_BIT); + if ((time_t) -1 > 0) fprintf(f, "un"); + fprintf(f, "signed"); + fclose(f); + exit(0); +} +],[bird_cv_type_time_t=`cat conftestresult` +],[ AC_MSG_RESULT([test program failed]) + AC_MSG_ERROR([Cannot determine time_t size and signedness.]) +],[bird_cv_type_time_t="32-bit signed"]) +]) +case "$bird_cv_type_time_t" in + *64-bit*) AC_DEFINE(TIME_T_IS_64BIT) ;; + esac +case "$bird_cv_type_time_t" in + *unsigned*) ;; + *) AC_DEFINE(TIME_T_IS_SIGNED) ;; + esac +]) |