Add -fPIC flag to making libsecp256k1

Author: abailly

build.hs

@@ -91,7 +91,7 @@ runShake pwd uid = shakeArgs options $ do
     command_
       [AddEnv "PKG_CONFIG_PATH" (libDirectory </> "pkgconfig")]
       "cabal"
-      ["build", "all", "--ghc-options", "-L" <> libDirectory <> " -lsodium -lblst -lsecp256k1"]
+      ["build", "all", "--ghc-options", "-L" <> libDirectory <> " -lsodium -lblst -lsecp256k1 -fPIC"]
     command_
       [ AddEnv "LD_LIBRARY_PATH" libDirectory
       , AddEnv "DYLD_FALLBACK_LIBRARY_PATH" libDirectory

scripts/install-libsecp256k1.sh

@@ -14,6 +14,7 @@ echo "Using secp256k1 version: ${SECP256K1_VERSION}"
 [[ -d secp256k1 ]] || git clone --depth 1 --branch ${SECP256K1_VERSION} https://github.com/bitcoin-core/secp256k1
 cd secp256k1
 ./autogen.sh
-./configure --enable-module-schnorrsig --enable-experimental --prefix=$prefix --enable-shared=no
+export CFLAGS=-fPIC
+./configure --enable-pic=yes --enable-module-schnorrsig --enable-experimental --prefix=$prefix --enable-shared=no
 make
 make install