Update release LDC to v1.23.0

The LDC used for release hasn't been updated in years,
and was severely lacking behind.
The script used is very clearly a copy of the one in DUB,
which has been overhauled in dlang/dub#1849,
so copying those improvements over.

Author: Geod24

.travis.yml

@@ -1,6 +1,6 @@
 dist: xenial
-sudo: false
 language: d
+
 d:
   - dmd
   - ldc-beta
@@ -28,7 +28,7 @@ jobs:
   include:
     - stage: GitHub Release
       #if: tag IS present
-      d: ldc-1.13.0
+      d: ldc-1.23.0
       os: linux
       script: echo "Deploying to GitHub releases ..." && ./release.sh
       deploy:
@@ -42,7 +42,7 @@ jobs:
           tags: true
     - stage: GitHub Release
       #if: tag IS present
-      d: ldc-1.13.0
+      d: ldc-1.23.0
       os: osx
       script: echo "Deploying to GitHub releases ..." && ./release.sh
       deploy:
@@ -56,10 +56,8 @@ jobs:
           tags: true
     - stage: GitHub Release
       #if: tag IS present
-      d: dmd
+      d: ldc-1.23.0
       os: linux
-      language: generic
-      sudo: yes
       script: echo "Deploying to GitHub releases ..." && ./release-windows.sh
       addons:
         apt:
@@ -76,10 +74,8 @@ jobs:
             tags: true
     - stage: GitHub Release
       #if: tag IS present
-      d: dmd
+      d: ldc-1.23.0
       os: linux
-      language: generic
-      sudo: yes
       script: echo "Deploying to GitHub releases ..." && ARCH=64 ./release-windows.sh
       addons:
         apt:

setup-ldc-windows.sh

@@ -1,70 +1,52 @@
 #!/usr/bin/env bash
 
-# sets up LDC for cross-compilation. Source this script, s.t. the new LDC is in PATH
+# Sets up LDC for cross-compilation. Source this script, s.t. the new LDC is in PATH
 
-LDC_VERSION="1.13.0"
+# Make sure this version matches the version of LDC2 used in .travis.yml,
+# otherwise the compiler and the lib used might mismatch.
+LDC_VERSION="1.23.0"
 ARCH=${ARCH:-32}
 VERSION=$(git describe --abbrev=0 --tags)
 OS=windows
 
-# Step 0: install ldc
-if [ ! -f install.sh ] ; then
-	wget https://dlang.org/install.sh
+# LDC should already be installed (see .travis.yml)
+# However, we need the libraries, so download them
+# We can't use the downloaded ldc2 itself, because obviously it's for Windows
+
+if [ "${ARCH}" == 64 ]; then
+	ARCH_SUFFIX='x86_64'
+	ZIP_ARCH_SUFFIX='x64'
+else
+	ARCH_SUFFIX='i686'
+	ZIP_ARCH_SUFFIX='x86'
 fi
-. $(bash ./install.sh -a "ldc-${LDC_VERSION}")
 
-# for the install.sh script only
-LDC_PATH="$(dirname $(dirname $(which ldc2)))"
+LDC_DIR_PATH="$(pwd)/ldc2-${LDC_VERSION}-windows-${ZIP_ARCH_SUFFIX}"
+LDC_XDFLAGS="-conf=${LDC_DIR_PATH}/etc/ldc2.conf -mtriple=${ARCH_SUFFIX}-pc-windows-msvc"
 
-# Step 1a: download the LDC x64 windows binaries
-if [ "${ARCH}" == 64 ] && [ ! -d "ldc2-${LDC_VERSION}-windows-x64" ] ; then
-	wget "https://github.com/ldc-developers/ldc/releases/download/v1.13.0/ldc2-${LDC_VERSION}-windows-x64.7z"
-	7z x "ldc2-${LDC_VERSION}-windows-x64.7z" > /dev/null
-	# Step 2a: Add LDC windows binaries to LDC Linux
-	if [ ! -d "${LDC_PATH}/lib-win64" ] ; then
-		cp -r ldc2-1.13.0-windows-x64/lib "${LDC_PATH}/lib-win64"
-		cat >> "$LDC_PATH"/etc/ldc2.conf <<EOF
-"x86_64-.*-windows-msvc":
-{
-	switches = [
-		"-defaultlib=phobos2-ldc,druntime-ldc",
-		"-link-defaultlib-shared=false",
-	];
-	lib-dirs = [
-		"%%ldcbinarypath%%/../lib-win64",
-	];
-};
-EOF
-	fi
+# Step 1: download the LDC Windows release
+# Check if the user already have it (e.g. building locally)
+if [ ! -d ${LDC_DIR_PATH} ]; then
+    if [ ! -d "ldc2-${LDC_VERSION}-windows-${ZIP_ARCH_SUFFIX}.7z" ]; then
+        wget "https://github.com/ldc-developers/ldc/releases/download/v${LDC_VERSION}/ldc2-${LDC_VERSION}-windows-${ZIP_ARCH_SUFFIX}.7z"
+    fi
+    7z x "ldc2-${LDC_VERSION}-windows-${ZIP_ARCH_SUFFIX}.7z" > /dev/null
 fi
-# Step 1b: download the LDC x86 windows binaries
-if [ "${ARCH}" == 32 ] && [ ! -d "ldc2-${LDC_VERSION}-windows-x86" ] ; then
-	wget "https://github.com/ldc-developers/ldc/releases/download/v1.13.0/ldc2-${LDC_VERSION}-windows-x86.7z"
-	7z x "ldc2-${LDC_VERSION}-windows-x86.7z" > /dev/null
-	# Step 2b: Add LDC windows binaries to LDC Linux
-	if [ ! -d "${LDC_PATH}/lib-win32" ] ; then
-		cp -r ldc2-1.13.0-windows-x86/lib "${LDC_PATH}/lib-win32"
-		cat >> "$LDC_PATH"/etc/ldc2.conf <<EOF
-"i686-.*-windows-msvc":
+
+# Step 2: Generate a config file with the proper path
+cat > ${LDC_DIR_PATH}/etc/ldc2.conf <<EOF
+default:
 {
 	switches = [
 		"-defaultlib=phobos2-ldc,druntime-ldc",
 		"-link-defaultlib-shared=false",
 	];
+    post-switches = [
+        "-I${LDC_DIR_PATH}/import",
+    ];
 	lib-dirs = [
-		"%%ldcbinarypath%%/../lib-win32",
+		"${LDC_DIR_PATH}/lib/",
+		"${LDC_DIR_PATH}/lib/mingw/",
 	];
 };
 EOF
-	fi
-fi
-
-# set suffices and compilation flags
-if [ "$ARCH" == "64" ] ; then
-	ARCH_SUFFIX="x86_64"
-	export DFLAGS="-mtriple=x86_64-windows-msvc"
-else
-	ARCH_SUFFIX="x86"
-	export DFLAGS="-mtriple=i686-windows-msvc"
-fi
-