Hi,
When I build Vim with clang 3.5 and if_perl enabled on Cygwin, it fails with
the following error:
configure:5624: checking if compile and link flags for Perl are sane
configure:5644: clang -o conftest.exe -O2 -fno-strength-reduce -Wall
-DPERL_USE_SAFE_PUTENV -U__STRICT_ANSI__ -ggdb -O2 -pipe
-Wimplicit-function-declaration
-fdebug-prefix-map=/mnt/share/maint/perl.x86_64/build=/usr/src/debug/perl-5.14.4-3
-fdebug-prefix-map=/mnt/share/maint/perl.x86_64/src/perl-5.14.4=/usr/src/debug/perl-5.14.4-3
-fwrapv -fstack-protector -I/usr/lib/perl5/5.14/x86_64-cygwin-threads/CORE
-L/usr/local/lib conftest.c -Wl,--enable-auto-import
-Wl,--export-all-symbols -Wl,--enable-auto-image-base -fstack-protector
-L/usr/local/lib -L/usr/lib/perl5/5.14/x86_64-cygwin-threads/CORE -lperl -ldl
-lcrypt >&5
clang: error: unknown argument:
'-fdebug-prefix-map=/mnt/share/maint/perl.x86_64/build=/usr/src/debug/perl-5.14.4-3'
clang: error: unknown argument:
'-fdebug-prefix-map=/mnt/share/maint/perl.x86_64/src/perl-5.14.4=/usr/src/debug/perl-5.14.4-3'
clang: warning: optimization flag '-fno-strength-reduce' is not supported
Attached patch fixes the problem.
Regards,
Ken Takata
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# HG changeset patch
# Parent c4c88ac6ffc59442dba23f851bfe20a5d19ec840
diff --git a/src/configure.in b/src/configure.in
--- a/src/configure.in
+++ b/src/configure.in
@@ -942,8 +942,10 @@ if test "$enable_perlinterp" = "yes" -o
done
AC_SUBST(vi_cv_perl_xsubpp)
dnl Remove "-fno-something", it breaks using cproto.
+ dnl Remove "-fdebug-prefix-map", it isn't supported by clang.
perlcppflags=`$vi_cv_path_perl -Mlib=$srcdir -MExtUtils::Embed \
- -e 'ccflags;perl_inc;print"\n"' | sed -e 's/-fno[[^ ]]*//'`
+ -e 'ccflags;perl_inc;print"\n"' | sed -e 's/-fno[[^ ]]*//' \
+ -e 's/-fdebug-prefix-map[[^ ]]*//g'`
dnl Remove "-lc", it breaks on FreeBSD when using "-pthread".
perllibs=`cd $srcdir; $vi_cv_path_perl -MExtUtils::Embed -e 'ldopts' | \
sed -e '/Warning/d' -e '/Note (probably harmless)/d' \
