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{ stdenv, fetchurl, bison, m4 }:
stdenv.mkDerivation {
name = "flex-2.5.39";
src = fetchurl {
url = mirror://sourceforge/flex/flex-2.5.39.tar.bz2;
sha256 = "0zv15giw3gma03y2bzw78hjfy49vyir7vbcgnh9bb3637dgvblmd";
};
buildInputs = [ bison ];
propagatedNativeBuildInputs = [ m4 ];
postConfigure = stdenv.lib.optionalString (stdenv.isDarwin || stdenv.isCygwin) ''
sed -i Makefile -e 's/-no-undefined//;'
'';
crossAttrs = {
preConfigure = ''
export ac_cv_func_malloc_0_nonnull=yes
export ac_cv_func_realloc_0_nonnull=yes
'';
};
meta = {
homepage = http://flex.sourceforge.net/;
description = "A fast lexical analyser generator";
};
}
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