From 3184cb206058193cfed7b2aefd46d5da9780d535 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Martin=20Storsj=C3=B6?= <martin@martin.st>
Date: Tue, 23 May 2023 11:12:59 +0300
Subject: [PATCH] wrappers: Don't rely on "readlink -f"

Older macOS versions (macOS 12.2 at least) don't support this
option, while newer macOS versions do support it (macOS 12.6).

The solution is based on https://stackoverflow.com/a/1116890/3115956,
but simplified for this usecase.
---
 wrappers/clang-target-wrapper.sh | 12 +++++++++++-
 wrappers/ld-wrapper.sh           | 12 +++++++++++-
 wrappers/objdump-wrapper.sh      | 12 +++++++++++-
 3 files changed, 33 insertions(+), 3 deletions(-)

diff --git a/wrappers/clang-target-wrapper.sh b/wrappers/clang-target-wrapper.sh
index dfa36e4..dff8c4e 100755
--- a/wrappers/clang-target-wrapper.sh
+++ b/wrappers/clang-target-wrapper.sh
@@ -14,7 +14,17 @@
 # ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 # OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 
-DIR="$(cd "$(dirname $(readlink -f "$0"))" && pwd)"
+get_dir() {
+    target="$1"
+    while [ -L "$target" ]; do
+        cd "$(dirname "$target")"
+        target="$(readlink "$(basename "$target")")"
+    done
+    cd "$(dirname "$target")"
+    pwd
+}
+
+DIR="$(get_dir "$0")"
 BASENAME="$(basename "$0")"
 TARGET="${BASENAME%-*}"
 EXE="${BASENAME##*-}"
diff --git a/wrappers/ld-wrapper.sh b/wrappers/ld-wrapper.sh
index eb9d3ff..c2549d1 100755
--- a/wrappers/ld-wrapper.sh
+++ b/wrappers/ld-wrapper.sh
@@ -14,7 +14,17 @@
 # ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 # OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 
-DIR="$(cd "$(dirname $(readlink -f "$0"))" && pwd)"
+get_dir() {
+    target="$1"
+    while [ -L "$target" ]; do
+        cd "$(dirname "$target")"
+        target="$(readlink "$(basename "$target")")"
+    done
+    cd "$(dirname "$target")"
+    pwd
+}
+
+DIR="$(get_dir "$0")"
 export PATH="$DIR":"$PATH"
 
 BASENAME="$(basename "$0")"
diff --git a/wrappers/objdump-wrapper.sh b/wrappers/objdump-wrapper.sh
index 1b09c34..d864f9c 100755
--- a/wrappers/objdump-wrapper.sh
+++ b/wrappers/objdump-wrapper.sh
@@ -14,7 +14,17 @@
 # ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 # OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 
-DIR="$(cd "$(dirname $(readlink -f "$0"))" && pwd)"
+get_dir() {
+    target="$1"
+    while [ -L "$target" ]; do
+        cd "$(dirname "$target")"
+        target="$(readlink "$(basename "$target")")"
+    done
+    cd "$(dirname "$target")"
+    pwd
+}
+
+DIR="$(get_dir "$0")"
 export PATH="$DIR":"$PATH"
 
 if [ "$1" = "-f" ]; then