patch 9.1.0104: Linking fails with -lto because of PERL_CFLAGS
Problem: Linking fails with -lto because of PERL_CFLAGS
(Zoltan Toth)
Solution: Filter out -flto argument from Perl CFLAGS.
fixes: #14012
Signed-off-by: Christian Brabandt <cb@256bit.org>
diff --git a/src/configure.ac b/src/configure.ac
index ebe0d08..664f219 100644
--- a/src/configure.ac
+++ b/src/configure.ac
@@ -1163,11 +1163,13 @@
dnl Remove "-fno-something", it breaks using cproto.
dnl Remove "-fdebug-prefix-map", it isn't supported by clang.
dnl Remove "FORTIFY_SOURCE", it will be defined twice.
- dnl remove -pipe and -Wxxx, it confuses cproto
+ dnl Remove -pipe and -Wxxx, it confuses cproto
+ dnl Remove -flto[=auto], it causes link failures for clang
perlcppflags=`$vi_cv_path_perl -Mlib=$srcdir -MExtUtils::Embed \
-e 'ccflags;perl_inc;print"\n"' | sed -e 's/-fno[[^ ]]*//' \
-e 's/-fdebug-prefix-map[[^ ]]*//g' \
-e 's/-pipe //' \
+ -e 's/-flto\(=auto\)\? //' \
-e 's/-W[[^ ]]*//g' \
-e 's/-D_FORTIFY_SOURCE=.//g'`
dnl Remove "-lc", it breaks on FreeBSD when using "-pthread".