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-rw-r--r--groups/dev_packages.group1
1 files changed, 1 insertions, 0 deletions
diff --git a/groups/dev_packages.group b/groups/dev_packages.group
index 8a9ab769..42308564 100644
--- a/groups/dev_packages.group
+++ b/groups/dev_packages.group
@@ -62,6 +62,7 @@ DEV_PACKAGES_PYTHON="${PREFIX}/bin/python2";
: ${PKG_FLEX_SHA256SUM:=e87aae032bf07c26f85ac0ed3250998c37621d95f8bd748b31f15b33c45ee995};
: ${PKG_FLEX_VERSION:=2.6.4};
: ${PKG_FLEX_URL:=https://github.com/westes/flex/releases/download/v${PKG_FLEX_VERSION}/flex-${PKG_FLEX_VERSION}.tar.gz};
+: ${PKG_FLEX_CFLAGS_CONFIGURE_EXTRA:="-D_GNU_SOURCE"};
: ${PKG_FLEX_CONFIGURE_ARGS_EXTRA:=--disable-libfl};
: ${PKG_BISON_SHA256SUM:=55e4a023b1b4ad19095a5f8279f0dc048fa29f970759cea83224a6d5e7a3a641};
: ${PKG_BISON_VERSION:=3.5};