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-rw-r--r--tasks/toolchains/gcc.rake2
1 files changed, 2 insertions, 0 deletions
diff --git a/tasks/toolchains/gcc.rake b/tasks/toolchains/gcc.rake
index 810f23b7a..3d55e6171 100644
--- a/tasks/toolchains/gcc.rake
+++ b/tasks/toolchains/gcc.rake
@@ -31,6 +31,8 @@ MRuby::Toolchain.new(:gcc) do |conf, params|
end
[[conf.cc, 'c'], [conf.cxx, 'c++']].each do |cc, lang|
+ cc.defines += %w(HAS_MALLOC_TRIM) if cc.has_function? 'malloc_trim', with_header: 'malloc.h'
+
cc.instance_variable_set :@header_search_language, lang
def cc.header_search_paths
if @header_search_command != command