1 files changed, 103 insertions, 0 deletions
diff --git a/pkgs/build-support/cc-wrapper/gnat-wrapper.sh b/pkgs/build-support/cc-wrapper/gnat-wrapper.sh
new file mode 100644
index 000000000000..3514ccd67325
--- /dev/null
+++ b/pkgs/build-support/cc-wrapper/gnat-wrapper.sh
@@ -0,0 +1,103 @@
+#! @shell@ -e
+
+if [ -n "$NIX_GNAT_WRAPPER_START_HOOK" ]; then
+    source "$NIX_GNAT_WRAPPER_START_HOOK"
+fi
+
+if [ -z "$NIX_GNAT_WRAPPER_FLAGS_SET" ]; then
+    source @out@/nix-support/add-flags.sh
+fi
+
+source @out@/nix-support/utils.sh
+
+
+# Figure out if linker flags should be passed.  GCC prints annoying
+# warnings when they are not needed.
+dontLink=0
+getVersion=0
+nonFlagArgs=0
+
+for i in "$@"; do
+    if [ "$i" = -c ]; then
+        dontLink=1
+    elif [ "$i" = -M ]; then
+        dontLink=1
+    elif [ "${i:0:1}" != - ]; then
+        nonFlagArgs=1
+    elif [ "$i" = -m32 ]; then
+        if [ -e @out@/nix-support/dynamic-linker-m32 ]; then
+            NIX_LDFLAGS="$NIX_LDFLAGS -dynamic-linker $(cat @out@/nix-support/dynamic-linker-m32)"
+        fi
+    fi
+done
+
+# If we pass a flag like -Wl, then gcc will call the linker unless it
+# can figure out that it has to do something else (e.g., because of a
+# "-c" flag).  So if no non-flag arguments are given, don't pass any
+# linker flags.  This catches cases like "gcc" (should just print
+# "gcc: no input files") and "gcc -v" (should print the version).
+if [ "$nonFlagArgs" = 0 ]; then
+    dontLink=1
+fi
+
+
+# Optionally filter out paths not refering to the store.
+params=("$@")
+if [ "$NIX_ENFORCE_PURITY" = 1 -a -n "$NIX_STORE" ]; then
+    rest=()
+    n=0
+    while [ $n -lt ${#params[*]} ]; do
+        p=${params[n]}
+        p2=${params[$((n+1))]}
+        if [ "${p:0:3}" = -L/ ] && badPath "${p:2}"; then
+            skip $p
+        elif [ "${p:0:3}" = -I/ ] && badPath "${p:2}"; then
+            skip $p
+        elif [ "${p:0:4}" = -aI/ ] && badPath "${p:3}"; then
+            skip $p
+        elif [ "${p:0:4}" = -aO/ ] && badPath "${p:3}"; then
+            skip $p
+        else
+            rest=("${rest[@]}" "$p")
+        fi
+        n=$((n + 1))
+    done
+    params=("${rest[@]}")
+fi
+
+
+# Add the flags for the GNAT compiler proper.
+extraAfter=($NIX_GNATFLAGS_COMPILE)
+extraBefore=()
+
+if [ "`basename $0`x" = "gnatmakex" ]; then
+  extraBefore=("--GNATBIND=@out@/bin/gnatbind --GNATLINK=@out@/bin/gnatlink ")
+fi
+
+# Add the flags that should be passed to the linker (and prevent
+# `ld-wrapper' from adding NIX_LDFLAGS again).
+#for i in $NIX_LDFLAGS_BEFORE; do
+#    extraBefore=(${extraBefore[@]} "-largs $i")
+#done
+
+# Optionally print debug info.
+if [ -n "$NIX_DEBUG" ]; then
+  echo "original flags to @prog@:" >&2
+  for i in "${params[@]}"; do
+      echo "  $i" >&2
+  done
+  echo "extraBefore flags to @prog@:" >&2
+  for i in ${extraBefore[@]}; do
+      echo "  $i" >&2
+  done
+  echo "extraAfter flags to @prog@:" >&2
+  for i in ${extraAfter[@]}; do
+      echo "  $i" >&2
+  done
+fi
+
+if [ -n "$NIX_GNAT_WRAPPER_EXEC_HOOK" ]; then
+    source "$NIX_GNAT_WRAPPER_EXEC_HOOK"
+fi
+
+exec @prog@ ${extraBefore[@]} "${params[@]}" ${extraAfter[@]}