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Remove AC_PROC_CC_C99 obsoleted in autoconf 2.70. 

Since we only use it to make sure we can handle variadic macros,
explicitly check only for that.  with & ok djm@
This commit is contained in:
Darren Tucker 2020-11-06 16:53:24 +11:00
parent a019e353df
commit 586f9bd2f5
1 changed files with 9 additions and 4 deletions
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13
configure.ac
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@ -20,11 +20,16 @@ AC_LANG([C])
AC_CONFIG_HEADERS([config.h])
AC_PROG_CC([cc gcc])
AC_PROG_CC_C99
# XXX relax this after reimplementing logit() etc.
if test "x$ac_cv_prog_cc_c99" = "xno" ; then
AC_MSG_ERROR([*** OpenSSH requires a C99 capable compiler ***])
fi
AC_MSG_CHECKING([if $CC supports C99-style variadic macros])
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
int f(int a, int b, int c) { return a + b + c; }
#define F(a, ...) f(a, __VA_ARGS__)
]], [[int main(void) { return F(1, 2, -3); }]])],
[ AC_MSG_RESULT([yes]) ],
[ AC_MSG_ERROR([*** OpenSSH requires support for C99-style variadic macros]) ]
)
AC_CANONICAL_HOST
AC_C_BIGENDIAN