diff options
Diffstat (limited to 'config/c-compiler.m4')
| -rw-r--r-- | config/c-compiler.m4 | 26 |
1 files changed, 11 insertions, 15 deletions
diff --git a/config/c-compiler.m4 b/config/c-compiler.m4 index e309a5e3e40..1509dbfa2ab 100644 --- a/config/c-compiler.m4 +++ b/config/c-compiler.m4 @@ -150,23 +150,19 @@ fi])# PGAC_TYPE_128BIT_INT -# PGAC_C_STATIC_ASSERT -# -------------------- -# Check if the C compiler understands _Static_assert(), -# and define HAVE__STATIC_ASSERT if so. -# -# We actually check the syntax ({ _Static_assert(...) }), because we need -# gcc-style compound expressions to be able to wrap the thing into macros. -AC_DEFUN([PGAC_C_STATIC_ASSERT], -[AC_CACHE_CHECK(for _Static_assert, pgac_cv__static_assert, +# PGAC_C_STATEMENT_EXPRESSIONS +# ---------------------------- +# Check if the C compiler understands GCC statement expressions. +AC_DEFUN([PGAC_C_STATEMENT_EXPRESSIONS], +[AC_CACHE_CHECK(for statement expressions, pgac_cv_statement_expressions, [AC_LINK_IFELSE([AC_LANG_PROGRAM([], [({ _Static_assert(1, "foo"); })])], -[pgac_cv__static_assert=yes], -[pgac_cv__static_assert=no])]) -if test x"$pgac_cv__static_assert" = xyes ; then -AC_DEFINE(HAVE__STATIC_ASSERT, 1, - [Define to 1 if your compiler understands _Static_assert.]) -fi])# PGAC_C_STATIC_ASSERT +[pgac_cv_statement_expressions=yes], +[pgac_cv_statement_expressions=no])]) +if test x"$pgac_cv_statement_expressions" = xyes ; then +AC_DEFINE(HAVE_STATEMENT_EXPRESSIONS, 1, + [Define to 1 if your compiler supports statement expressions.]) +fi])# PGAC_C_STATEMENT_EXPRESSIONS |