diff options
Diffstat (limited to 'configure.ac')
| -rw-r--r-- | configure.ac | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/configure.ac b/configure.ac index ee99283ef..3b1488de5 100644 --- a/configure.ac +++ b/configure.ac @@ -782,7 +782,8 @@ do ln -s -- "$mini_gmp_path/mini-gmp.$i" "$mpfr_build_src/mini-gmp.$i" done -dnl First check whether mini-gmp defines GMP_NUMB_BITS. +dnl First check whether mini-gmp defines GMP_NUMB_BITS. If it doesn't, +dnl then guess the value from the size of mp_limb_t. AC_MSG_CHECKING(for GMP_NUMB_BITS) how="from mini-gmp.h" saved_CPPFLAGS="$CPPFLAGS" @@ -790,8 +791,9 @@ CPPFLAGS="$CPPFLAGS -I$mpfr_build_src" AC_COMPUTE_INT(mini_gmp_numb_bits, [(GMP_NUMB_BITS)], [#include <mini-gmp.h>], [how="not in mini-gmp.h; guessed" - AC_COMPUTE_INT(mini_gmp_numb_bits, [(sizeof(unsigned long) * CHAR_BIT)], - [#include <limits.h>], + AC_COMPUTE_INT(mini_gmp_numb_bits, [(sizeof(mp_limb_t) * CHAR_BIT)], + [#include <limits.h> + #include <mini-gmp.h>], [AC_MSG_FAILURE([cannot define GMP_NUMB_BITS])]) AC_DEFINE_UNQUOTED([GMP_NUMB_BITS], $mini_gmp_numb_bits, [number of bits in a limb]) ]) |