build: Don't use libattr

We only rely on interfaces like listxattr() which are provided by the C
library itself.

6 files changed, 4 insertions, 18 deletions

diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 4c1c89c..8e688fe 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -23,8 +23,6 @@ jobs:
               libacl1-dev \
               libacl1:i386 \
               attr \
-              libattr1-dev \
-              libattr1:i386 \
               libcap2-bin \
               libcap-dev \
               libcap2:i386 \
@@ -34,7 +32,6 @@ jobs:
           # Ubuntu doesn't let you install the -dev packages for both amd64 and
           # i386 at once, so we make our own symlinks to fix -m32 -lacl -l...
           sudo ln -s libacl.so.1 /lib/i386-linux-gnu/libacl.so
-          sudo ln -s libattr.so.1 /lib/i386-linux-gnu/libattr.so
           sudo ln -s libcap.so.2 /lib/i386-linux-gnu/libcap.so
           sudo ln -s libonig.so.5 /lib/i386-linux-gnu/libonig.so
           # Work around https://github.com/actions/runner-images/issues/9491
diff --git a/.github/workflows/codecov.yml b/.github/workflows/codecov.yml
index 9c2119b..d1dc351 100644
--- a/.github/workflows/codecov.yml
+++ b/.github/workflows/codecov.yml
@@ -18,7 +18,6 @@ jobs:
               acl \
               libacl1-dev \
               attr \
-              libattr1-dev \
               libcap2-bin \
               libcap-dev \
               libonig-dev \
diff --git a/.github/workflows/codeql.yml b/.github/workflows/codeql.yml
index 71073c6..c50b266 100644
--- a/.github/workflows/codeql.yml
+++ b/.github/workflows/codeql.yml
@@ -34,7 +34,6 @@ jobs:
               acl \
               libacl1-dev \
               attr \
-              libattr1-dev \
               libcap2-bin \
               libcap-dev \
               libonig-dev \
diff --git a/GNUmakefile b/GNUmakefile
index 080fb17..8685ca3 100644
--- a/GNUmakefile
+++ b/GNUmakefile
@@ -125,7 +125,6 @@ endif # USE_ONIGURUMA
 ifeq ($(OS),Linux)
 ifndef NOLIBS
 USE_ACL := y
-USE_ATTR := y
 USE_LIBCAP := y
 USE_LIBURING := y
 endif
@@ -136,12 +135,6 @@ else
 LOCAL_CPPFLAGS += -DBFS_USE_SYS_ACL_H=0
 endif
 
-ifdef USE_ATTR
-LOCAL_LDLIBS += -lattr
-else
-LOCAL_CPPFLAGS += -DBFS_USE_SYS_XATTR_H=0
-endif
-
 ifdef USE_LIBCAP
 LOCAL_LDLIBS += -lcap
 else
diff --git a/README.md b/README.md
index 9992938..17226fd 100644
--- a/README.md
+++ b/README.md
@@ -293,7 +293,7 @@ Here's how to install them on some common platforms:
 
 <pre>
 <strong>Alpine Linux</strong>
-# apk add acl{,-dev} attr{,-dev} libcap{,-dev} liburing-dev oniguruma-dev
+# apk add acl{,-dev} attr libcap{,-dev} liburing-dev oniguruma-dev
 
 <strong>Arch Linux</strong>
 # pacman -S acl attr libcap liburing oniguruma
@@ -302,13 +302,13 @@ Here's how to install them on some common platforms:
 # apt install acl libacl1-dev attr libattr1-dev libcap2-bin libcap-dev liburing-dev libonig-dev
 
 <strong>Fedora</strong>
-# dnf install acl libacl-devel libattr-devel libcap-devel liburing-devel oniguruma-devel
+# dnf install acl libacl-devel attr libcap-devel liburing-devel oniguruma-devel
 
 <strong>NixOS</strong>
 # nix-env -i acl attr libcap liburing oniguruma
 
 <strong>Void Linux</strong>
-# xbps-install -S acl-{devel,progs} attr-{devel,progs} libcap-{devel,progs} liburing-devel oniguruma-devel
+# xbps-install -S acl-{devel,progs} attr-progs libcap-{devel,progs} liburing-devel oniguruma-devel
 
 <strong>Homebrew</strong>
 $ brew install oniguruma
diff --git a/docs/BUILDING.md b/docs/BUILDING.md
index 02f9756..7eb3a37 100644
--- a/docs/BUILDING.md
+++ b/docs/BUILDING.md
@@ -56,7 +56,7 @@ Here are some of the common ones; check the [`GNUmakefile`](/GNUmakefile) for mo
 | `CC`                             | The C compiler to use, e.g. `make CC=clang` |
 | `CFLAGS`<br>`EXTRA_CFLAGS`       | Override/add to the default compiler flags  |
 | `LDFLAGS`<br>`EXTRA_LDFLAGS`     | Override/add to the linker flags            |
-| `USE_ACL`<br>`USE_ATTR`<br>...   | Enable/disable [optional dependencies]      |
+| `USE_ACL`<br>`USE_LIBCAP`<br>... | Enable/disable [optional dependencies]      |
 | `TEST_FLAGS`                     | `tests.sh` flags for `make check`           |
 | `BUILDDIR`                       | The build output directory (default: `.`)   |
 | `DESTDIR`                        | The root directory for `make install`       |
@@ -73,13 +73,11 @@ These dependencies are optional, and can be turned off at build time if necessar
 | Dependency  | Platforms  | `make` flag     |
 |-------------|------------|-----------------|
 | [acl]       | Linux only | `USE_ACL`       |
-| [attr]      | Linux only | `USE_ATTR`      |
 | [libcap]    | Linux only | `USE_LIBCAP`    |
 | [liburing]  | Linux only | `USE_LIBURING`  |
 | [Oniguruma] | All        | `USE_ONIGURUMA` |
 
 [acl]: https://savannah.nongnu.org/projects/acl
-[attr]: https://savannah.nongnu.org/projects/attr
 [libcap]: https://sites.google.com/site/fullycapable/
 [liburing]: https://github.com/axboe/liburing
 [Oniguruma]: https://github.com/kkos/oniguruma