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curl-compilers.m4: for gcc + want warnings, set gnu89 standard

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To better verify that the code is C89

Closes #9542
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Daniel Stenberg 2022-09-20 10:56:44 +02:00
parent 549032df41
commit b23ce2cee7
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m4/curl-compilers.m4
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@ -860,6 +860,7 @@ AC_DEFUN([CURL_SET_COMPILER_WARNING_OPTS], [
GNU_C)
#
if test "$want_warnings" = "yes"; then
tmp_CFLAGS="$tmp_CFLAGS -std=gnu89"
#
dnl Do not enable -pedantic when cross-compiling with a gcc older
dnl than 3.0, to avoid warnings from third party system headers.