chmod -R u+w "$NIX_BUILD_TOP/source"

runHook preConfigure

export ERL_TOP="$NIX_BUILD_TOP/source"

export OTP_HOST="$("$ERL_TOP/make/autoconf/config.guess")"

configureFlags=(

--build="$OTP_HOST"

--host="$OTP_HOST"

)

# The standalone erl_interface configure does not generate the OTP

# verbosity include that its generated Makefile expects.

substitute "$ERL_TOP/make/output.mk.in" "$ERL_TOP/make/output.mk" \

--replace-fail "@DEFAULT_VERBOSITY@" "0"

./configure "''${configureFlags[@]}"

runHook postConfigure

runHook preBuild

# Force this empty so GNU ld never interprets OTP's "-Wl,-R" runtime-path

# setting as "--just-symbols=<first-object>" when building shared libei.

# Older OTP releases that do not build shared libei simply ignore it.

make -C src -f "$OTP_HOST/Makefile" \

ERL_TOP="$ERL_TOP" \

LIB_LD_FLAG_RUNTIME_LIBRARY_PATH= \

opt

runHook postBuild

runHook preInstall

install -Dm644 include/*.h -t "$out/include"

install -Dm644 "obj/$OTP_HOST/libei.a" "$out/lib/libei.a"

install -Dm644 "obj/$OTP_HOST/libei_st.a" "$out/lib/libei_st.a"

if [ -f "lib/$OTP_HOST/libei.so" ]; then

install -Dm755 "lib/$OTP_HOST/libei.so" "$out/lib/libei.so"

install -Dm755 "lib/$OTP_HOST/libei_st.so" "$out/lib/libei_st.so"

fi

install -Dm755 "bin/$OTP_HOST/erl_call" "$out/bin/erl_call"

runHook postInstall