From 929301662139122429bd2a1c07fdf620db9e4a73 Mon Sep 17 00:00:00 2001
From: q66 <daniel@octaforge.org>
Date: Tue, 26 Nov 2019 00:22:04 +0100
Subject: [PATCH] libomp: fix build on ppc64 and restrict archs

---
 srcpkgs/libomp/patches/ppc64-elfv2.patch | 64 ++++++++++++++++++++++++
 srcpkgs/libomp/template                  |  6 +++
 2 files changed, 70 insertions(+)
 create mode 100644 srcpkgs/libomp/patches/ppc64-elfv2.patch

diff --git a/srcpkgs/libomp/patches/ppc64-elfv2.patch b/srcpkgs/libomp/patches/ppc64-elfv2.patch
new file mode 100644
index 0000000000..7c3c62dfaf
--- /dev/null
+++ b/srcpkgs/libomp/patches/ppc64-elfv2.patch
@@ -0,0 +1,64 @@
+Remove the invalid assumption that ELFv2 == LE.
+
+--- runtime/src/z_Linux_asm.S
++++ runtime/src/z_Linux_asm.S
+@@ -1503,12 +1503,12 @@ KMP_LABEL(kmp_1):
+ // return:	r3	(always 1/TRUE)
+ //
+ 	.text
+-# if KMP_ARCH_PPC64_LE
++# if _CALL_ELF == 2
+ 	.abiversion 2
+ # endif
+ 	.globl	__kmp_invoke_microtask
+ 
+-# if KMP_ARCH_PPC64_LE
++# if _CALL_ELF == 2
+ 	.p2align	4
+ # else
+ 	.p2align	2
+@@ -1516,7 +1516,7 @@ KMP_LABEL(kmp_1):
+ 
+ 	.type	__kmp_invoke_microtask,@function
+ 
+-# if KMP_ARCH_PPC64_LE
++# if _CALL_ELF == 2
+ __kmp_invoke_microtask:
+ .Lfunc_begin0:
+ .Lfunc_gep0:
+@@ -1560,7 +1560,7 @@ __kmp_invoke_microtask:
+ 	.cfi_offset lr, 16
+ 
+ // Compute the size necessary for the local stack frame.
+-# if KMP_ARCH_PPC64_LE
++# if _CALL_ELF == 2
+ 	li 12, 72
+ # else
+ 	li 12, 88
+@@ -1638,7 +1638,7 @@ __kmp_invoke_microtask:
+ // for the microtask begins 48 + 8*8 == 112 bytes above r1 for ELFv1 and
+ // 32 + 8*8 == 96 bytes above r1 for ELFv2.
+ 	addi 4, 4, 40
+-# if KMP_ARCH_PPC64_LE
++# if _CALL_ELF == 2
+ 	addi 12, 1, 88
+ # else
+ 	addi 12, 1, 104
+@@ -1650,7 +1650,7 @@ __kmp_invoke_microtask:
+ 	bdnz .Lnext
+ 
+ .Lcall:
+-# if KMP_ARCH_PPC64_LE
++# if _CALL_ELF == 2
+ 	std 2, 24(1)
+ 	mr 12, 3
+ #else
+@@ -1666,7 +1666,7 @@ __kmp_invoke_microtask:
+ 
+ 	mtctr 12
+ 	bctrl
+-# if KMP_ARCH_PPC64_LE
++# if _CALL_ELF == 2
+ 	ld 2, 24(1)
+ # else
+ 	ld 2, 40(1)
diff --git a/srcpkgs/libomp/template b/srcpkgs/libomp/template
index 2247728984..9ee7a92056 100644
--- a/srcpkgs/libomp/template
+++ b/srcpkgs/libomp/template
@@ -2,6 +2,7 @@
 pkgname=libomp
 version=8.0.0
 revision=1
+archs="x86_64* i686* armv[67]* aarch64* ppc64*"
 wrksrc="openmp-${version}.src"
 build_style=cmake
 configure_args="-DLIBOMP_ENABLE_SHARED=ON -DLIBOMP_INSTALL_ALIASES=OFF"
@@ -14,6 +15,11 @@ homepage="https://openmp.llvm.org"
 distfiles="https://releases.llvm.org/${version}/openmp-${version}.src.tar.xz"
 checksum=f7b1705d2f16c4fc23d6531f67d2dd6fb78a077dd346b02fed64f4b8df65c9d5
 
+do_check() {
+	# requires lit and clang, lit is not packaged
+	:
+}
+
 libomp-devel_package() {
 	short_desc+=" - development files"
 	depends="${sourcepkg}-${version}_${revision}"