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{ stdenv, fetchurl, bison, m4 }:
stdenv.mkDerivation rec {
name = "flex-${version}";
version = "2.6.4";
src = fetchurl {
url = "https://github.com/westes/flex/releases/download/v${version}/flex-${version}.tar.gz";
sha256 = "15g9bv236nzi665p9ggqjlfn4dwck5835vf0bbw2cz7h5c1swyp8";
};
buildInputs = [ bison ];
propagatedBuildInputs = [ m4 ];
postConfigure = stdenv.lib.optionalString (stdenv.isDarwin || stdenv.isCygwin) ''
sed -i Makefile -e 's/-no-undefined//;'
'';
crossAttrs = {
# disable tests which can't run on build machine
postPatch = ''
substituteInPlace Makefile.in --replace "tests" " ";
'';
preConfigure = ''
export ac_cv_func_malloc_0_nonnull=yes
export ac_cv_func_realloc_0_nonnull=yes
'';
};
meta = {
homepage = https://github.com/westes/flex;
description = "A fast lexical analyser generator";
platforms = stdenv.lib.platforms.unix;
};
}
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