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configure.ac: Require C99 compiler

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Sebastian Pipping 2023-05-28 21:12:17 +02:00
parent e1c0f173eb
commit c020c49d73
1 changed files with 3 additions and 0 deletions
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3
expat/configure.ac
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@ -105,6 +105,9 @@ AC_SUBST(LIBAGE)
AC_LANG([C])
AC_PROG_CC_C99
AS_IF([test "${ac_cv_prog_cc_c99}" = no],
[AC_MSG_ERROR([Expat requires a C99 compiler.])])
AS_IF([test "$GCC" = yes],
[AX_APPEND_COMPILE_FLAGS([-Wall -Wextra], [AM_CFLAGS])
dnl Be careful about adding the -fexceptions option; some versions of