[openwrt/openwrt] prereq-build: test for perl's Data::Dumper

[LEDE Commits]

zorun pushed a commit to openwrt/openwrt.git, branch openwrt-19.07:
https://git.openwrt.org/5bec393fcb34236a6fcdb4b9adaf6ba755ef7677

commit 5bec393fcb34236a6fcdb4b9adaf6ba755ef7677
Author: Rosen Penev <rosenp at gmail.com>
AuthorDate: Sun Mar 29 18:13:56 2020 -0700

    prereq-build: test for perl's Data::Dumper
    
    Required for installation of autoconf:
    
    make[5]: Entering directory `/openwrt/build_dir/host/autoconf-2.69'
    Making all in bin
    make[6]: Entering directory `/openwrt/build_dir/host/autoconf-2.69/bin'
    autom4te_perllibdir='..'/lib AUTOM4TE_CFG='../lib/autom4te.cfg'
    ../bin/autom4te -B '..'/lib -B '..'/lib         --language M4sh --cache
     '' --melt ./autoconf.as -o autoconf.in
    
    Can't locate Data/Dumper.pm in @INC (@INC contains: ../lib
    /usr/local/lib64/perl5 /usr/local/share/perl5 /usr/lib64/perl5/vendor_perl
    /usr/share/perl5/vendor_perl /usr/lib64/perl5 /usr/share/perl5 .) at
    ../lib/Autom4te/C4che.pm line 33.
    BEGIN failed--compilation aborted at ../lib/Autom4te/C4che.pm line 33.
    Compilation failed in require at ../bin/autom4te line 40.
    BEGIN failed--compilation aborted at ../bin/autom4te line 40.
    make[6]: *** [autoconf.in] Error 2
    
    Signed-off-by: Rosen Penev <rosenp at gmail.com>
    (cherry picked from commit dc467eac38f2447b652b6680cf4af75b05fd6cd2)
---
 include/prereq-build.mk | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/include/prereq-build.mk b/include/prereq-build.mk
index 4528f87391..54ed0e6f90 100644
--- a/include/prereq-build.mk
+++ b/include/prereq-build.mk
@@ -64,6 +64,10 @@ else
   zlib_link_flags := -lz
 endif
 
+$(eval $(call TestHostCommand,perl-data-dumper, \
+	Please install the Perl Data::Dumper module, \
+	perl -MData::Dumper -e 1))
+
 $(eval $(call TestHostCommand,perl-thread-queue, \
 	Please install the Perl Thread::Queue module, \
 	perl -MThread::Queue -e 1))