1diff --git a/Bio/Ext/Align/Makefile.PL b/Bio/Ext/Align/Makefile.PL
2index cc6c343..ea5cffa 100755
3--- a/Bio/Ext/Align/Makefile.PL
4+++ b/Bio/Ext/Align/Makefile.PL
5@@ -5,7 +5,7 @@ WriteMakefile(
6 'NAME' => 'Bio::Ext::Align',
7 'VERSION' => '1.5.1',
8 'LIBS' => ['-lm'], # e.g., '-lm'
9- 'DEFINE' => '-DPOSIX -DNOERROR', # e.g., '-DHAVE_SOMETHING'
10+ 'DEFINE' => '-DPOSIX -DNOERROR -Wno-implicit-function-declaration', # e.g., '-DHAVE_SOMETHING'
11 'INC' => '-I./libs', # e.g., '-I/usr/include/other'
12 'MYEXTLIB' => 'libs/libsw$(LIB_EXT)',
13 'clean' => { 'FILES' => 'libs/*.o libs/*.a' }