Make rules_cc more compatible on Posix systems.
The patch from
https://github.com/bazelbuild/rules_cc/pull/466
Replaces `bash` with `/bin/sh`. Not yet submitted upstream,
so for now, locally as patch.
diff --git a/MODULE.bazel b/MODULE.bazel
index a336ab1..5d1ce6a 100644
--- a/MODULE.bazel
+++ b/MODULE.bazel
@@ -10,7 +10,6 @@
bazel_dep(name = "protobuf", version = "31.0-rc2")
bazel_dep(name = "re2", version = "2024-07-02.bcr.1")
bazel_dep(name = "rules_bison", version = "0.3")
-bazel_dep(name = "rules_cc", version = "0.1.2")
bazel_dep(name = "rules_flex", version = "0.3")
bazel_dep(name = "rules_license", version = "1.0.0")
bazel_dep(name = "rules_m4", version = "0.2.3")
@@ -20,3 +19,11 @@
# To build compilation DB and run build-cleaning
bazel_dep(name = "bant", version = "0.2.0", dev_dependency = True)
+
+# Make rules_cc more compatible to compile on Posix systems: use /bin/sh
+bazel_dep(name = "rules_cc", version = "0.2.1")
+single_version_override(
+ module_name = "rules_cc",
+ patch_strip = 1,
+ patches = ["//bazel:rules_cc_466.patch"],
+)
diff --git a/bazel/rules_cc_466.patch b/bazel/rules_cc_466.patch
new file mode 100644
index 0000000..a09f80b
--- /dev/null
+++ b/bazel/rules_cc_466.patch
@@ -0,0 +1,275 @@
+From 5f655475e956af645508076e3906385dfd414a11 Mon Sep 17 00:00:00 2001
+From: UebelAndre <github@uebelandre.com>
+Date: Tue, 19 Aug 2025 07:29:30 -0700
+Subject: [PATCH] Update cc_wrapper templates to posix shell.
+
+---
+ cc/private/toolchain/linux_cc_wrapper.sh.tpl | 41 +++---
+ cc/private/toolchain/osx_cc_wrapper.sh.tpl | 145 +++++++++++--------
+ 2 files changed, 109 insertions(+), 77 deletions(-)
+
+diff --git a/cc/private/toolchain/linux_cc_wrapper.sh.tpl b/cc/private/toolchain/linux_cc_wrapper.sh.tpl
+index 1d030d4a..29fb3794 100644
+--- a/cc/private/toolchain/linux_cc_wrapper.sh.tpl
++++ b/cc/private/toolchain/linux_cc_wrapper.sh.tpl
+@@ -1,4 +1,4 @@
+-#!/usr/bin/env bash
++#!/bin/sh
+ #
+ # Copyright 2015 The Bazel Authors. All rights reserved.
+ #
+@@ -20,26 +20,31 @@ set -eu
+
+ OUTPUT=
+
+-function parse_option() {
+- local -r opt="$1"
+- if [[ "${OUTPUT}" = "1" ]]; then
++parse_option() {
++ opt=$1
++ if [ "$OUTPUT" = "1" ]; then
+ OUTPUT=$opt
+- elif [[ "$opt" = "-o" ]]; then
++ elif [ "$opt" = "-o" ]; then
+ # output is coming
+ OUTPUT=1
+ fi
+ }
+
+-# let parse the option list
++# parse the option list
+ for i in "$@"; do
+- if [[ "$i" = @* && -r "${i:1}" ]]; then
+- while IFS= read -r opt
+- do
+- parse_option "$opt"
+- done < "${i:1}" || exit 1
+- else
+- parse_option "$i"
+- fi
++ case $i in
++ @*)
++ file=${i#@}
++ if [ -r "$file" ]; then
++ while IFS= read -r opt; do
++ parse_option "$opt"
++ done < "$file" || exit 1
++ fi
++ ;;
++ *)
++ parse_option "$i"
++ ;;
++ esac
+ done
+
+ # Set-up the environment
+@@ -49,6 +54,8 @@ done
+ %{cc} "$@"
+
+ # Generate an empty file if header processing succeeded.
+-if [[ "${OUTPUT}" == *.h.processed ]]; then
+- echo -n > "${OUTPUT}"
+-fi
++case $OUTPUT in
++ *.h.processed)
++ : > "$OUTPUT"
++ ;;
++esac
+diff --git a/cc/private/toolchain/osx_cc_wrapper.sh.tpl b/cc/private/toolchain/osx_cc_wrapper.sh.tpl
+index 0a2d5689..62f5ff68 100644
+--- a/cc/private/toolchain/osx_cc_wrapper.sh.tpl
++++ b/cc/private/toolchain/osx_cc_wrapper.sh.tpl
+@@ -1,4 +1,4 @@
+-#!/usr/bin/env bash
++#!/bin/sh
+ #
+ # Copyright 2015 The Bazel Authors. All rights reserved.
+ #
+@@ -33,21 +33,36 @@ LIB_DIRS=
+ RPATHS=
+ OUTPUT=
+
+-function parse_option() {
+- local -r opt="$1"
+- if [[ "${OUTPUT}" = "1" ]]; then
++XCRUN=/usr/bin/xcrun
++[ -x "$XCRUN" ] || XCRUN="xcrun"
++
++DIRNAME=/usr/bin/dirname
++[ -x "$DIRNAME" ] || DIRNAME="dirname"
++
++BASENAME=/usr/bin/basename
++[ -x "$BASENAME" ] || BASENAME="basename"
++
++READLINK=/usr/bin/readlink
++[ -x "$READLINK" ] || READLINK="readlink"
++
++SED=/usr/bin/sed
++[ -x "$SED" ] || SED="sed"
++
++parse_option() {
++ opt=$1
++ if [ "$OUTPUT" = "1" ]; then
+ OUTPUT=$opt
+- elif [[ "$opt" =~ ^-l(.*)$ ]]; then
+- LIBS="${BASH_REMATCH[1]} $LIBS"
+- elif [[ "$opt" =~ ^(.*)\.so$ ]]; then
+- LIB_PATHS="${opt} $LIB_PATHS"
+- elif [[ "$opt" =~ ^(.*)\.dylib$ ]]; then
+- LIB_PATHS="${opt} $LIB_PATHS"
+- elif [[ "$opt" =~ ^-L(.*)$ ]]; then
+- LIB_DIRS="${BASH_REMATCH[1]} $LIB_DIRS"
+- elif [[ "$opt" =~ ^\@loader_path/(.*)$ ]]; then
+- RPATHS="${BASH_REMATCH[1]} ${RPATHS}"
+- elif [[ "$opt" = "-o" ]]; then
++ elif [ "${opt#-l}" != "$opt" ]; then
++ LIBS="${opt#-l} $LIBS"
++ elif [ "${opt%.so}" != "$opt" ]; then
++ LIB_PATHS="$opt $LIB_PATHS"
++ elif [ "${opt%.dylib}" != "$opt" ]; then
++ LIB_PATHS="$opt $LIB_PATHS"
++ elif [ "${opt#-L}" != "$opt" ]; then
++ LIB_DIRS="${opt#-L} $LIB_DIRS"
++ elif [ "${opt#@loader_path/}" != "$opt" ]; then
++ RPATHS="${opt#@loader_path/} $RPATHS"
++ elif [ "$opt" = "-o" ]; then
+ # output is coming
+ OUTPUT=1
+ fi
+@@ -55,14 +70,19 @@ function parse_option() {
+
+ # let parse the option list
+ for i in "$@"; do
+- if [[ "$i" = @* && -r "${i:1}" ]]; then
+- while IFS= read -r opt
+- do
+- parse_option "$opt"
+- done < "${i:1}" || exit 1
+- else
+- parse_option "$i"
+- fi
++ case $i in
++ @*)
++ file=${i#@}
++ if [ -r "$file" ]; then
++ while IFS= read -r opt; do
++ parse_option "$opt"
++ done < "$file" || exit 1
++ fi
++ ;;
++ *)
++ parse_option "$i"
++ ;;
++ esac
+ done
+
+ # Set-up the environment
+@@ -72,66 +92,71 @@ done
+ %{cc} "$@"
+
+ # Generate an empty file if header processing succeeded.
+-if [[ "${OUTPUT}" == *.h.processed ]]; then
+- echo -n > "${OUTPUT}"
+-fi
+-
+-function get_library_path() {
+- for libdir in ${LIB_DIRS}; do
+- if [ -f ${libdir}/lib$1.so ]; then
+- echo "${libdir}/lib$1.so"
+- elif [ -f ${libdir}/lib$1.dylib ]; then
+- echo "${libdir}/lib$1.dylib"
++case $OUTPUT in
++ *.h.processed)
++ : > "$OUTPUT"
++ ;;
++esac
++
++get_library_path() {
++ lib=$1
++ for libdir in $LIB_DIRS; do
++ if [ -f "$libdir/lib$lib.so" ]; then
++ echo "$libdir/lib$lib.so"
++ return
++ elif [ -f "$libdir/lib$lib.dylib" ]; then
++ echo "$libdir/lib$lib.dylib"
++ return
+ fi
+ done
+ }
+
+ # A convenient method to return the actual path even for non symlinks
+ # and multi-level symlinks.
+-function get_realpath() {
+- local previous="$1"
+- local next=$(readlink "${previous}")
+- while [ -n "${next}" ]; do
+- previous="${next}"
+- next=$(readlink "${previous}")
++get_realpath() {
++ previous=$1
++ next=$($READLINK "$previous" 2>/dev/null || true)
++ while [ -n "$next" ]; do
++ previous=$next
++ next=$($READLINK "$previous" 2>/dev/null || true)
+ done
+- echo "${previous}"
++ echo "$previous"
+ }
+
+ # Get the path of a lib inside a tool
+-function get_otool_path() {
++get_otool_path() {
+ # the lib path is the path of the original lib relative to the workspace
+- get_realpath $1 | sed 's|^.*/bazel-out/|bazel-out/|'
++ get_realpath "$1" | $SED 's|^.*/bazel-out/|bazel-out/|'
+ }
+
+-function call_install_name() {
+- /usr/bin/xcrun install_name_tool -change $(get_otool_path "$1") \
+- "@loader_path/$2/$3" "${OUTPUT}"
++call_install_name() {
++ $XCRUN install_name_tool -change "$(get_otool_path "$1")" \
++ "@loader_path/$2/$3" "$OUTPUT"
+ }
+
+ # Do replacements in the output
+-for rpath in ${RPATHS}; do
+- for lib in ${LIBS}; do
+- unset libname
+- if [ -f "$(/usr/bin/dirname ${OUTPUT})/${rpath}/lib${lib}.so" ]; then
+- libname="lib${lib}.so"
+- elif [ -f "$(/usr/bin/dirname ${OUTPUT})/${rpath}/lib${lib}.dylib" ]; then
+- libname="lib${lib}.dylib"
++for rpath in $RPATHS; do
++ for lib in $LIBS; do
++ libname=
++ if [ -f "$($DIRNAME "$OUTPUT")/$rpath/lib$lib.so" ]; then
++ libname="lib$lib.so"
++ elif [ -f "$($DIRNAME "$OUTPUT")/$rpath/lib$lib.dylib" ]; then
++ libname="lib$lib.dylib"
+ fi
+ # ${libname-} --> return $libname if defined, or undefined otherwise. This is to make
+ # this set -e friendly
+- if [[ -n "${libname-}" ]]; then
+- libpath=$(get_library_path ${lib})
+- if [ -n "${libpath}" ]; then
+- call_install_name "${libpath}" "${rpath}" "${libname}"
++ if [ -n "$libname" ]; then
++ libpath=$(get_library_path "$lib")
++ if [ -n "$libpath" ]; then
++ call_install_name "$libpath" "$rpath" "$libname"
+ fi
+ fi
+ done
+- for libpath in ${LIB_PATHS}; do
++ for libpath in $LIB_PATHS; do
+ if [ -f "$libpath" ]; then
+- libname=$(/usr/bin/basename "$libpath")
+- if [ -f "$(/usr/bin/dirname ${OUTPUT})/${rpath}/${libname}" ]; then
+- call_install_name "${libpath}" "${rpath}" "${libname}"
++ libname=$($BASENAME "$libpath")
++ if [ -f "$($DIRNAME "$OUTPUT")/$rpath/$libname" ]; then
++ call_install_name "$libpath" "$rpath" "$libname"
+ fi
+ fi
+ done
