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author | Lennart Weller <lhw@ring0.de> | 2017-01-24 15:21:09 +0000 |
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committer | Lennart Weller <lhw@ring0.de> | 2017-01-24 15:21:09 +0000 |
commit | 3ed3b02ed96ddab1c084811f3579b3a2aec83e04 (patch) | |
tree | 7a61ab288ae47800c4f11be5677d6ad8288dcd98 /m4/ax_c_statement_expressions.m4 | |
parent | New upstream version 1.4.0+dfsg (diff) | |
download | netdata-upstream/1.5.0+dfsg.tar.xz netdata-upstream/1.5.0+dfsg.zip |
New upstream version 1.5.0+dfsgupstream/1.5.0+dfsg
Diffstat (limited to 'm4/ax_c_statement_expressions.m4')
-rw-r--r-- | m4/ax_c_statement_expressions.m4 | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/m4/ax_c_statement_expressions.m4 b/m4/ax_c_statement_expressions.m4 new file mode 100644 index 000000000..fb259e727 --- /dev/null +++ b/m4/ax_c_statement_expressions.m4 @@ -0,0 +1,23 @@ +# AC_C_STMT_EXPR +# ------------- +# Define HAVE_STMT_EXPR if compiler has statement expressions. +AN_IDENTIFIER([_Generic], [AC_C_STMT_EXPR]) +AC_DEFUN([AC_C_STMT_EXPR], +[AC_CACHE_CHECK([for statement expressions], ac_cv_c_stmt_expr, +[AC_COMPILE_IFELSE( + [AC_LANG_SOURCE( + [[int + main (int argc, char **argv) + { + int x = ({ int y = 1; y; }); + return x; + } + ]])], + [ac_cv_c_stmt_expr=yes], + [ac_cv_c_stmt_expr=no])]) +if test $ac_cv_c_stmt_expr = yes; then + AC_DEFINE([HAVE_STMT_EXPR], 1, + [Define to 1 if compiler supports statement expressions.]) +fi +])# AC_C_STMT_EXPR + |