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| author | Alon Bar-Lev <alon.barlev@gmail.com> | 2012-02-29 22:11:52 +0200 |
|---|---|---|
| committer | David Sommerseth <davids@redhat.com> | 2012-03-22 22:07:07 +0100 |
| commit | 0fc5b8b3390797b67bc48036649109a78f36a186 (patch) | |
| tree | 0ac132ca273c76f11d8407639e093184befa01f9 /m4/ax_emptyarray.m4 | |
| parent | d313dc950308d960f550279a69f445e712244beb (diff) | |
| download | openvpn-0fc5b8b3390797b67bc48036649109a78f36a186.tar.gz openvpn-0fc5b8b3390797b67bc48036649109a78f36a186.tar.xz openvpn-0fc5b8b3390797b67bc48036649109a78f36a186.zip | |
build: split acinclude.m4 into m4/*
ax_emptyarray.m4 ax_openvpn_lib.m4 ax_socklen_t.m4 ax_varargs.m4
Signed-off-by: Alon Bar-Lev <alon.barlev@gmail.com>
Acked-by: Adriaan de Jong <dejong@fox-it.com>
Signed-off-by: David Sommerseth <davids@redhat.com>
Diffstat (limited to 'm4/ax_emptyarray.m4')
| -rw-r--r-- | m4/ax_emptyarray.m4 | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/m4/ax_emptyarray.m4 b/m4/ax_emptyarray.m4 new file mode 100644 index 0000000..0a8755c --- /dev/null +++ b/m4/ax_emptyarray.m4 @@ -0,0 +1,27 @@ +dnl @synopsis AX_EMPTY_ARRAY +dnl +dnl Define EMPTY_ARRAY_SIZE to be either "0" +dnl or "" depending on which syntax the compiler +dnl prefers for empty arrays in structs. +dnl +dnl @version +dnl @author James Yonan <jim@yonan.net> +AC_DEFUN([AX_EMPTY_ARRAY], [ + AC_MSG_RESULT([checking for C compiler empty array support]) + AC_COMPILE_IFELSE([AC_LANG_SOURCE( + [ + struct { int foo; int bar[[0]]; } mystruct; + ])], [ + AC_DEFINE_UNQUOTED(EMPTY_ARRAY_SIZE, 0, [Dimension to use for empty array declaration]) + ], [ + AC_COMPILE_IFELSE([AC_LANG_SOURCE( + [ + struct { int foo; int bar[[]]; } mystruct; + ])], [ + AC_DEFINE_UNQUOTED(EMPTY_ARRAY_SIZE,, [Dimension to use for empty array declaration]) + ], [ + AC_MSG_ERROR([C compiler is unable to creaty empty arrays]) + ]) + ]) + ] +) |