From cf0645719ed11cb1ae7de7bf832db43afcf9f2be Mon Sep 17 00:00:00 2001
From: Kevin Mihelich <kevin@archlinuxarm.org>
Date: Thu, 20 May 2021 22:36:41 +0000
Subject: [PATCH] added community/libc++

---
 community/libc++/PKGBUILD     | 90 +++++++++++++++++++++++++++++++++++
 community/libc++/atomic.patch | 20 ++++++++
 2 files changed, 110 insertions(+)
 create mode 100644 community/libc++/PKGBUILD
 create mode 100644 community/libc++/atomic.patch

diff --git a/community/libc++/PKGBUILD b/community/libc++/PKGBUILD
new file mode 100644
index 000000000..a06d3d879
--- /dev/null
+++ b/community/libc++/PKGBUILD
@@ -0,0 +1,90 @@
+# Maintener: Anatol Pomozov
+# Contributor: Llewelyn Trahaearn <woefulderelict [at] gmail [dot] com>
+# Contributor: Daniel Micay <danielmicay [at] gmail [dot] com>
+# Contributor: MThinkCpp <mtc [dot] maintainer [at] outlook [dot] com>
+
+# ALARM: Kevin Mihelich <kevin@archlinuxarm.org>
+#  - atomic fixes for v5
+
+pkgbase=libc++
+pkgname=(libc++ libc++abi libc++experimental)
+pkgver=12.0.0
+pkgrel=1
+url="https://libcxx.llvm.org/"
+license=('custom:Apache 2.0 with LLVM Exception')
+arch=('x86_64')
+depends=('gcc-libs')
+makedepends=('clang' 'cmake' 'llvm' 'libunwind' 'ninja' 'python')
+source=("https://github.com/llvm/llvm-project/releases/download/llvmorg-$pkgver/llvm-$pkgver.src.tar.xz"{,.sig}
+        "https://github.com/llvm/llvm-project/releases/download/llvmorg-$pkgver/libcxx-$pkgver.src.tar.xz"{,.sig}
+        "https://github.com/llvm/llvm-project/releases/download/llvmorg-$pkgver/libcxxabi-$pkgver.src.tar.xz"{,.sig}
+        'atomic.patch')
+noextract=("${source[@]##*/}")
+sha512sums=('ec17153ef774a1e08085763bda7d0dfce6802fbaa17e89831695ce1b2eb015a6c2aebfaa9fe7985a83b9c51bd75d40bb4f1fc706dc16d4c0dc2b2722a1d8a24e'
+            'SKIP'
+            'd8038e73b4f26191516608799288f5418ccfb4552ffd767b08179f0dba2730f0d872b28bd3db9fe244e7177101b599aa251d28a496c734b22b3c053db187d88d'
+            'SKIP'
+            'adc59e168d4e298a3fe8a08045c4c5089b2a3eb06dacf54a5a345200cef11a764b93bcc5a289433a57bde2d0456fedd92abf0c22da00a62b395e1d2f678d26f1'
+            'SKIP'
+            'd4dd60345d59690e5fb332ec8c4b600615a6a2f3b50c748876b713e39c0e21800e021358a32920c7954e62c2224954c6f2cd2054d531420da3f696957d21e7f6')
+validpgpkeys=('474E22316ABF4785A88C6E8EA2C794A986419D8A' # Tom Stellard <tstellar@redhat.com> (.1 releases)
+              'B6C8F98282B944E3B0D5C2530FC3042E345AD05D') # Hans Wennborg <hans@chromium.org> (.0 releases)
+ 
+prepare() {
+  mkdir -p build llvm/projects/libcxx llvm/projects/libcxxabi
+  bsdtar --strip-components 1 -zxf "${source[0]##*/}" -C llvm
+  bsdtar --strip-components 1 -zxf "${source[2]##*/}" -C llvm/projects/libcxx
+  bsdtar --strip-components 1 -zxf "${source[4]##*/}" -C llvm/projects/libcxxabi
+  sed -i 's/CREDITS.TXT/CREDITS/' llvm/projects/libcxx/LICENSE.TXT llvm/projects/libcxxabi/LICENSE.TXT
+  if [[ $CARCH == "arm" ]]; then
+    patch -p1 -d llvm -i ../atomic.patch
+    echo "target_link_libraries(cxxabi_shared PRIVATE atomic)" >> llvm/projects/libcxxabi/src/CMakeLists.txt
+  fi
+}
+ 
+build() {
+  cd build
+
+  cmake \
+    -G Ninja \
+    -DCMAKE_BUILD_TYPE=Release \
+    -DCMAKE_INSTALL_PREFIX=/usr \
+    -DCMAKE_C_COMPILER=clang \
+    -DCMAKE_CXX_COMPILER=clang++ \
+    -DLIBCXX_INSTALL_EXPERIMENTAL_LIBRARY=NO \
+    "$srcdir"/llvm
+  ninja cxx cxx_experimental
+}
+
+check() {
+  ninja -C build check-cxx check-cxxabi
+}
+
+package_libc++() {
+  pkgdesc='LLVM C++ standard library.'
+  depends=("libc++abi=$pkgver-$pkgrel")
+  options=('staticlibs')
+
+  DESTDIR="$pkgdir" ninja -C build install-cxx
+
+  install -Dm0644 "$srcdir"/llvm/projects/libcxx/CREDITS.TXT "$pkgdir"/usr/share/licenses/"$pkgname"/CREDITS
+  install -Dm0644 "$srcdir"/llvm/projects/libcxx/LICENSE.TXT "$pkgdir"/usr/share/licenses/"$pkgname"/LICENSE
+}
+ 
+package_libc++abi() {
+  pkgdesc='Low level support for the LLVM C++ standard library.'
+  options=('staticlibs')
+  
+  DESTDIR="$pkgdir" ninja -C build install-cxxabi
+  install -Dm0644 "$srcdir"/llvm/projects/libcxxabi/CREDITS.TXT "$pkgdir"/usr/share/licenses/"$pkgname"/CREDITS
+  install -Dm0644 "$srcdir"/llvm/projects/libcxxabi/LICENSE.TXT "$pkgdir"/usr/share/licenses/"$pkgname"/LICENSE
+}
+ 
+package_libc++experimental() {
+  depends=("libc++=$pkgver-$pkgrel")
+  pkgdesc='LLVM C++ experimental library.'
+  
+  install -Dm0644 -t "$pkgdir"/usr/lib/ build/lib/libc++experimental.a
+  install -Dm0644 llvm/projects/libcxx/CREDITS.TXT "$pkgdir"/usr/share/licenses/"$pkgname"/CREDITS
+  install -Dm0644 llvm/projects/libcxx/LICENSE.TXT "$pkgdir"/usr/share/licenses/"$pkgname"/LICENSE
+}
diff --git a/community/libc++/atomic.patch b/community/libc++/atomic.patch
new file mode 100644
index 000000000..b93757674
--- /dev/null
+++ b/community/libc++/atomic.patch
@@ -0,0 +1,20 @@
+diff --git a/projects/libcxx/include/atomic.orig b/projects/libcxx/include/atomic
+index 0fc799a..a838635 100644
+--- a/projects/libcxx/include/atomic.orig
++++ b/projects/libcxx/include/atomic
+@@ -2791,10 +2791,15 @@ typedef conditional<_LIBCPP_CONTENTION_LOCK_FREE, __cxx_contention_t, char>::typ
+ typedef conditional<_LIBCPP_CONTENTION_LOCK_FREE, __cxx_contention_t, unsigned char>::type      __libcpp_unsigned_lock_free;
+ #else
+     // No signed/unsigned lock-free types
++#define LOCK_FREE_NOT_AVAILABLE
+ #endif
+ 
++#ifndef LOCK_FREE_NOT_AVAILABLE
+ typedef atomic<__libcpp_signed_lock_free> atomic_signed_lock_free;
+ typedef atomic<__libcpp_unsigned_lock_free> atomic_unsigned_lock_free;
++#endif
++
++#undef LOCK_FREE_NOT_AVAILABLE
+ 
+ #define ATOMIC_FLAG_INIT {false}
+ #define ATOMIC_VAR_INIT(__v) {__v}