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| author | Torbjorn Granlund <torbjorng@google.com> | 2015-09-03 19:38:20 +0200 |
|---|---|---|
| committer | Torbjorn Granlund <torbjorng@google.com> | 2015-09-03 19:38:20 +0200 |
| commit | 532c6875110773238302e2eff9d51d274b453d6d (patch) | |
| tree | cce1cda453bc07ca196c97c22921fa6874cf43df /acinclude.m4 | |
| parent | 54cee637e0394aa423da151e931bf97ed8ed7a3f (diff) | |
| download | gmp-532c6875110773238302e2eff9d51d274b453d6d.tar.gz | |
(GMP_C_HIDDEN_ALIAS): New.
Diffstat (limited to 'acinclude.m4')
| -rw-r--r-- | acinclude.m4 | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/acinclude.m4 b/acinclude.m4 index f4ac3d2d9..35da65ada 100644 --- a/acinclude.m4 +++ b/acinclude.m4 @@ -3249,6 +3249,25 @@ if test $gmp_cv_c_attribute_noreturn = yes; then fi ]) +dnl GMP_C_HIDDEN_ALIAS +dnl ------------------------ + +AC_DEFUN([GMP_C_HIDDEN_ALIAS], +[AC_CACHE_CHECK([whether gcc hidden aliases work], + gmp_cv_c_hidden_alias, +[AC_TRY_COMPILE( +[void hid() __attribute__ ((visibility("hidden"))); +void hid() {} +void pub() __attribute__ ((alias("hid")));], +, gmp_cv_c_hidden_alias=yes, gmp_cv_c_hidden_alias=no) +]) +if test $gmp_cv_c_hidden_alias = yes; then + AC_DEFINE(HAVE_HIDDEN_ALIAS, 1, + [Define to 1 if the compiler accepts gcc style __attribute__ ((visibility)) +and __attribute__ ((alias))]) + GMP_DEFINE(HAVE_HIDDEN_ALIAS, []) +fi +]) dnl GMP_C_DOUBLE_FORMAT dnl ------------------- |