sci-libs/openblas: fix riscv detect

Bug: https://bugs.gentoo.org/837806
Signed-off-by: Han Gao <rabenda.cn@gmail.com>
Signed-off-by: Jakov Smolić <jsmolic@gentoo.org>

2 files changed, 117 insertions, 0 deletions

diff --git a/sci-libs/openblas/files/openblas-0.3.20-fix-riscv.patch b/sci-libs/openblas/files/openblas-0.3.20-fix-riscv.patch
new file mode 100644
index 000000000000..9a14180cb85d
--- /dev/null
+++ b/sci-libs/openblas/files/openblas-0.3.20-fix-riscv.patch
@@ -0,0 +1,116 @@
+Bug: https://bugs.gentoo.org/837806
+From https://github.com/xianyi/OpenBLAS/pull/3613
+
+From 3fc52ebcfb80e01f753938fd314ca07b2c085767 Mon Sep 17 00:00:00 2001
+From: Han Gao <gaohan@uniontech.com>
+Date: Wed, 27 Apr 2022 01:34:55 +0800
+Subject: [PATCH 1/2] Fix other arch build in detect.
+
+When CORE is empty, use -march=loongson3a. Fix it.
+
+Signed-off-by: Han Gao <gaohan@uniontech.com>
+---
+ Makefile.system | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/Makefile.system b/Makefile.system
+index ac60eae5b6..1104893b55 100644
+--- a/Makefile.system
++++ b/Makefile.system
+@@ -847,7 +847,7 @@ CCOMMON_OPT += -mabi=32
+ BINARY_DEFINED = 1
+ endif
+ 
+-ifeq ($(CORE), $(filter $(CORE),LOONGSON3R3 LOONGSON3R4))
++ifneq (, $(filter $(CORE),LOONGSON3R3 LOONGSON3R4))
+ CCOMMON_OPT += -march=loongson3a
+ FCOMMON_OPT += -march=loongson3a
+ endif
+
+From 8123324c99ba69ce23b4028468313663001a76c6 Mon Sep 17 00:00:00 2001
+From: Han Gao <gaohan@uniontech.com>
+Date: Wed, 27 Apr 2022 02:29:43 +0800
+Subject: [PATCH 2/2] Fix riscv64 arch detect
+
+Signed-off-by: Han Gao <gaohan@uniontech.com>
+---
+ cpuid_riscv64.c | 18 +++++++++---------
+ getarch.c       |  4 ++--
+ 2 files changed, 11 insertions(+), 11 deletions(-)
+
+diff --git a/cpuid_riscv64.c b/cpuid_riscv64.c
+index 0eb50e0018..2aa4217816 100644
+--- a/cpuid_riscv64.c
++++ b/cpuid_riscv64.c
+@@ -1,5 +1,5 @@
+ /*****************************************************************************
+-Copyright (c) 2011-2014, The OpenBLAS Project
++Copyright (c) 2011-2022, The OpenBLAS Project
+ All rights reserved.
+ 
+ Redistribution and use in source and binary forms, with or without
+@@ -13,9 +13,9 @@ modification, are permitted provided that the following conditions are
+       notice, this list of conditions and the following disclaimer in
+       the documentation and/or other materials provided with the
+       distribution.
+-   3. Neither the name of the OpenBLAS project nor the names of 
+-      its contributors may be used to endorse or promote products 
+-      derived from this software without specific prior written 
++   3. Neither the name of the OpenBLAS project nor the names of
++      its contributors may be used to endorse or promote products
++      derived from this software without specific prior written
+       permission.
+ 
+ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+@@ -70,16 +70,16 @@ USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ /* or implied, of The University of Texas at Austin.                 */
+ /*********************************************************************/
+ 
+-#define CPU_UNKNOWN     0
+-#define CPU_C910V       1
++#define CPU_GENERIC   0
++#define CPU_C910V     1
+ 
+ static char *cpuname[] = {
+-  "UNKOWN",
++  "RISCV64_GENERIC",
+   "C910V"
+ };
+ 
+ int detect(void){
+-    return CPU_UNKNOWN;
++  return CPU_GENERIC;
+ }
+ 
+ char *get_corename(void){
+@@ -98,7 +98,7 @@ void get_subdirname(void){
+ }
+ 
+ void get_cpuconfig(void){
+-  printf("#define UNKNOWN\n");
++  printf("#define %s\n", cpuname[detect()]);
+   printf("#define L1_DATA_SIZE 65536\n");
+   printf("#define L1_DATA_LINESIZE 32\n");
+   printf("#define L2_SIZE 512488\n");
+diff --git a/getarch.c b/getarch.c
+index 4af986fb3b..f4590769d9 100644
+--- a/getarch.c
++++ b/getarch.c
+@@ -1731,7 +1731,7 @@ int main(int argc, char *argv[]){
+ #ifdef FORCE
+     printf("CORE=%s\n", CORENAME);
+ #else
+-#if defined(INTEL_AMD) || defined(POWER) || defined(__mips__) || defined(__arm__) || defined(__aarch64__) || defined(ZARCH) || defined(sparc) || defined(__loongarch__)
++#if defined(INTEL_AMD) || defined(POWER) || defined(__mips__) || defined(__arm__) || defined(__aarch64__) || defined(ZARCH) || defined(sparc) || defined(__loongarch__) || defined(__riscv)
+     printf("CORE=%s\n", get_corename());
+ #endif
+ #endif
+@@ -1879,7 +1879,7 @@ printf("ELF_VERSION=2\n");
+ #ifdef FORCE
+     printf("#define CHAR_CORENAME \"%s\"\n", CORENAME);
+ #else
+-#if defined(INTEL_AMD) || defined(POWER) || defined(__mips__) || defined(__arm__) || defined(__aarch64__) || defined(ZARCH) || defined(sparc) || defined(__loongarch__)
++#if defined(INTEL_AMD) || defined(POWER) || defined(__mips__) || defined(__arm__) || defined(__aarch64__) || defined(ZARCH) || defined(sparc) || defined(__loongarch__) || defined(__riscv)
+     printf("#define CHAR_CORENAME \"%s\"\n", get_corename());
+ #endif
+ #endif
diff --git a/sci-libs/openblas/openblas-0.3.20.ebuild b/sci-libs/openblas/openblas-0.3.20.ebuild
index ed4ad9b91ed7..04d90c709e40 100644
--- a/sci-libs/openblas/openblas-0.3.20.ebuild
+++ b/sci-libs/openblas/openblas-0.3.20.ebuild
@@ -27,6 +27,7 @@ BDEPEND="virtual/pkgconfig"
 
 PATCHES=(
 	"${FILESDIR}/${PN}-0.3.12-shared-blas-lapack.patch"
+	"${FILESDIR}/${PN}-0.3.20-fix-riscv.patch"
 )
 
 pkg_pretend() {