ghc: enable package & fix for current ndk (#8436)

packages/ghc/build.sh

@@ -1,10 +1,9 @@
-# Build failure with recent NDK.
-
 TERMUX_PKG_HOMEPAGE=https://www.haskell.org/ghc/
 TERMUX_PKG_DESCRIPTION="The Glasgow Haskell Compilation system"
 TERMUX_PKG_LICENSE="BSD 2-Clause, BSD 3-Clause, LGPL-2.1"
+TERMUX_PKG_MAINTAINER="@termux"
 TERMUX_PKG_VERSION=8.10.1
-TERMUX_PKG_REVISION=5
+TERMUX_PKG_REVISION=6
 TERMUX_PKG_SRCURL=http://downloads.haskell.org/~ghc/${TERMUX_PKG_VERSION}/ghc-${TERMUX_PKG_VERSION}-src.tar.xz
 TERMUX_PKG_SHA256=4e3b07f83a266b3198310f19f71e371ebce97c769b14f0d688f4cbf2a2a1edf5
 TERMUX_PKG_DEPENDS="binutils, clang, iconv, libffi, llvm, ncurses"
@@ -18,6 +17,26 @@ DYNAMIC_GHC_PROGRAMS=NO
 termux_step_pre_configure() {
 	termux_setup_ghc
 
+	_WRAPPER_BIN=$TERMUX_PKG_BUILDDIR/_wrapper/bin
+	mkdir -p $_WRAPPER_BIN
+	_WRAPPER_AR=$_WRAPPER_BIN/$TERMUX_HOST_PLATFORM-ar
+	cat > $_WRAPPER_AR <<-EOF
+		#!$(which sh)
+		exec $(which $AR) "\$@"
+	EOF
+	chmod 0700 $_WRAPPER_AR
+
+	for cmd in llc opt; do
+		local wrapper="$_WRAPPER_BIN/$cmd"
+		cat > "$wrapper" <<-EOF
+			#!$(which sh)
+			exec /usr/lib/llvm-10/bin/${cmd} "\$@"
+		EOF
+		chmod 0700 "$wrapper"
+	done
+
+	export PATH=$_WRAPPER_BIN:$PATH
+
 	TERMUX_PKG_EXTRA_CONFIGURE_ARGS+=" --target=${TERMUX_HOST_PLATFORM}"
 
 	# After stage 0, cabal passes a host string to the libraries' configure scripts that isn't valid.
@@ -78,6 +97,8 @@ patch -Np1 <<EOF
  endif
 EOF
 
+	export TERMUX_LD="$LD"
+
 	unset AR
 	unset AS
 	unset CC

packages/ghc/mk-config.mk.in.patch

@@ -0,0 +1,15 @@
+--- a/mk/config.mk.in
++++ b/mk/config.mk.in
+@@ -547,9 +547,9 @@
+ 
+ # why no LD=@LD@ ?
+ LD_STAGE0       = @LD_STAGE0@
+-LD_STAGE1       = $(LD)
+-LD_STAGE2       = $(LD)
+-LD_STAGE3       = $(LD)
++LD_STAGE1       = $(TERMUX_LD)
++LD_STAGE2       = $(TERMUX_LD)
++LD_STAGE3       = $(TERMUX_LD)
+ 
+ # Cross-compiling options
+ # See Note [CrossCompiling vs Stage1Only]