Add support for rdmd in gdc + set $RDMD variable

.travis.yml

@@ -15,7 +15,7 @@ matrix:
         - cmake -DCMAKE_INSTALL_PREFIX=$HOME/.local .
         - make install -j$(nproc)
         - popd
-      script: kcov --exclude-pattern=travis.sh $PWD/coverage ./travis.sh
+      script: kcov --exclude-pattern=travis.sh $PWD/coverage ./test/all.sh
       after_success: bash <(curl -s https://codecov.io/bash) -s $PWD/coverage
     - os: osx
-      script: ./travis.sh
+      script: ./test/all.sh

script/install.sh

@@ -556,6 +556,12 @@ install_compiler() {
         download_without_verify "$ROOT/$1/bin/gdmd" "$url"
         chmod +x "$ROOT/$1/bin/gdmd"
 
+        url=https://raw.githubusercontent.com/dlang/tools/e88c44d1818996b852bd0dfa0406f60e391f0687/rdmd.d
+        log "Downloading rdmd $url"
+        download_without_verify "$ROOT/$1/bin/rdmd.d" "$url"
+        log "Building rdmd"
+        "$ROOT/$1/bin/gdc" -O3 -o "$ROOT/$1/bin/rdmd" "$ROOT/$1/bin/rdmd.d"
+
     else
         fatal "Unknown compiler '$compiler'"
     fi
@@ -648,6 +654,7 @@ binpath_for_compiler() {
 
 write_env_vars() {
     local -r binpath=$(binpath_for_compiler "$1")
+    local rdmd=rdmd
     case $1 in
         dmd*)
             local suffix
@@ -689,6 +696,7 @@ deactivate() {
     unset _OLD_D_PS1
     unset DMD
     unset DC
+    unset RDMD
     unset -f deactivate
 }
 
@@ -702,6 +710,7 @@ export LIBRARY_PATH="$ROOT/$1/$libpath\${LIBRARY_PATH:+:}\${LIBRARY_PATH:-}"
 export LD_LIBRARY_PATH="$ROOT/$1/$libpath\${LD_LIBRARY_PATH:+:}\${LD_LIBRARY_PATH:-}"
 export DMD=$dmd
 export DC=$dc
+export RDMD=$rdmd
 export PS1="($1)\${PS1:-}"
 EOF
 

test/all.sh

@@ -0,0 +1,12 @@
+#!/bin/bash
+
+set -eu -o pipefail
+
+DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
+. $DIR/common.sh
+
+for file in $(find "$DIR" -name "*.sh") ; do
+    if ! ( [[ "$file" == */all.sh ]] || [[ "$file" == */common.sh ]] ) ; then
+        $file
+    fi
+done

test/common.sh

@@ -0,0 +1,6 @@
+#!/bin/bash
+
+set -eu -o pipefail
+
+ROOT="$DIR/../"
+INSTALLER="$ROOT/script/install.sh"

test/rdmd.sh

@@ -0,0 +1,40 @@
+#!/bin/bash
+
+set -uexo pipefail
+
+DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
+. $DIR/common.sh
+
+compilers=(
+    dmd-2.079.0
+    ldc-1.8.0
+    gdc-4.8.5
+)
+
+frontends=(
+    '2079L'
+    '2078L'
+    '2068L'
+)
+
+for idx in "${!compilers[@]}"
+do
+    compiler="${compilers[$idx]}"
+    echo "Testing: $compiler"
+    "$INSTALLER" $compiler
+
+    . ~/dlang/$compiler/activate
+    echo "pragma(msg, __VERSION__);" > test.d
+    # test vanilla rdmd
+    compilerFrontend=$(tail -n1 <(rdmd --force -c test.d 2>&1))
+    test "$compilerFrontend" = "${frontends[$idx]}"
+
+    # test $RDMD
+    compilerFrontend=$(tail -n1 <("$RDMD" --force -c test.d 2>&1))
+    test "$compilerFrontend" = "${frontends[$idx]}"
+    deactivate
+
+    # cleanup
+    rm -rf test.d test.o
+    "$INSTALLER" uninstall $compiler
+done