Add openblas with flang

recipes/recipes_emscripten/openblas-flang/build.sh

@@ -0,0 +1,18 @@
+#!/bin/bash
+
+set -ex
+
+emmake make libs \
+    NO_SHARED=1 \
+    TARGET=RISCV64_GENERIC \
+    CC=$CC \
+    FC=$FC \
+    HOSTCC=gcc \
+    USE_THREAD=0 \
+    BINARY=64 \
+    LDFLAGS="${SIDE_MODULE_LDFLAGS}"
+
+emmake make install PREFIX=$PREFIX NO_SHARED=1
+
+mkdir -p $PREFIX/lib
+cp libopenblas.a $PREFIX/lib

recipes/recipes_emscripten/openblas-flang/patches/0001-Add-no-implicit-function-declaration-flag.patch

@@ -0,0 +1,24 @@
+From 89fc62b849dc59398ff348d6b958d80d658b8de3 Mon Sep 17 00:00:00 2001
+From: Isabel Paredes <[email protected]>
+Date: Fri, 25 Apr 2025 14:25:50 +0200
+Subject: [PATCH 1/2] Add no-implicit-function-declaration flag
+
+gfortran option for LAPACK to improve thread safety
+It is enabled by default in Makefile.system for gfortran
+---
+ Makefile.rule | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/Makefile.rule b/Makefile.rule
+index c3edd1c..950a1fc 100644
+--- a/Makefile.rule
++++ b/Makefile.rule
+@@ -256,7 +256,7 @@ NO_AFFINITY = 1
+ # Common Optimization Flag;
+ # The default -O2 is enough.
+ # Flags for POWER8 are defined in Makefile.power. Don't modify COMMON_OPT
+-# COMMON_OPT = -O2
++COMMON_OPT = -O2 -Wno-implicit-function-declaration
+
+ # gfortran option for LAPACK to improve thread-safety
+ # It is enabled by default in Makefile.system for gfortran

recipes/recipes_emscripten/openblas-flang/patches/0002-Remove-march-flags.patch

@@ -0,0 +1,121 @@
+From 850c0d1396e7f6062b30d4fce19b1f73d4c0fd7f Mon Sep 17 00:00:00 2001
+From: Isabel Paredes <[email protected]>
+Date: Fri, 25 Apr 2025 14:29:53 +0200
+Subject: [PATCH 2/2] Remove -march flags
+
+---
+ 0001-Add-Wno-return-type-flag.patch | 13 ++++++++++
+ 0002-march.patch                    | 39 +++++++++++++++++++++++++++++
+ Makefile.prebuild                   |  4 ---
+ Makefile.riscv64                    |  4 ---
+ Makefile.system                     |  2 +-
+ 5 files changed, 53 insertions(+), 9 deletions(-)
+ create mode 100644 0001-Add-Wno-return-type-flag.patch
+ create mode 100644 0002-march.patch
+
+diff --git a/0001-Add-Wno-return-type-flag.patch b/0001-Add-Wno-return-type-flag.patch
+new file mode 100644
+index 0000000..b1c64a3
+--- /dev/null
++++ b/0001-Add-Wno-return-type-flag.patch
+@@ -0,0 +1,13 @@
++diff --git a/Makefile.rule b/Makefile.rule
++index e57388844..3e2f23611 100644
++--- a/Makefile.rule
+++++ b/Makefile.rule
++@@ -256,7 +256,7 @@ NO_AFFINITY = 1
++ # Common Optimization Flag;
++ # The default -O2 is enough.
++ # Flags for POWER8 are defined in Makefile.power. Don't modify COMMON_OPT
++-# COMMON_OPT = -O2
+++COMMON_OPT = -O2 -Wno-implicit-function-declaration
++ 
++ # gfortran option for LAPACK to improve thread-safety
++ # It is enabled by default in Makefile.system for gfortran
+\ No newline at end of file
+diff --git a/0002-march.patch b/0002-march.patch
+new file mode 100644
+index 0000000..23ea356
+--- /dev/null
++++ b/0002-march.patch
+@@ -0,0 +1,39 @@
++diff --git a/Makefile.prebuild b/Makefile.prebuild
++index b7d695a75..47cbcbf83 100644
++--- a/Makefile.prebuild
+++++ b/Makefile.prebuild
++@@ -71,10 +71,6 @@ ifeq ($(TARGET), RISCV64_ZVL128B)
++ TARGET_FLAGS = -march=rv64imafdcv -mabi=lp64d
++ endif
++
++-ifeq ($(TARGET), RISCV64_GENERIC)
++-TARGET_FLAGS = -march=rv64imafdc -mabi=lp64d
++-endif
++-
++ all: getarch_2nd
++	./getarch_2nd  0 >> $(TARGET_MAKE)
++	./getarch_2nd  1 >> $(TARGET_CONF)
++diff --git a/Makefile.riscv64 b/Makefile.riscv64
++index 9f6e48b7a..da9848a98 100644
++--- a/Makefile.riscv64
+++++ b/Makefile.riscv64
++@@ -14,7 +14,3 @@ ifeq ($(CORE), RISCV64_ZVL128B)
++ CCOMMON_OPT += -march=rv64imafdcv -mabi=lp64d 
++ FCOMMON_OPT += -march=rv64imafdcv -mabi=lp64d
++ endif
++-ifeq ($(CORE), RISCV64_GENERIC)
++-CCOMMON_OPT += -march=rv64imafdc -mabi=lp64d
++-FCOMMON_OPT += -march=rv64imafdc -mabi=lp64d
++-endif
++diff --git a/Makefile.system b/Makefile.system
++index 7bae72855..f9b2c0e78 100644
++--- a/Makefile.system
+++++ b/Makefile.system
++@@ -202,7 +202,7 @@ endif
++ # On x86_64 build getarch with march=native unless the compiler is PGI. This is required to detect AVX512 support in getarch.
++ ifeq ($(HOSTARCH), x86_64)
++ ifeq ($(findstring pgcc,$(HOSTCC))$(findstring nvc,$(HOSTCC)),)
++-GETARCH_FLAGS += -march=native
+++# GETARCH_FLAGS += -march=native
++ endif
++ endif
+\ No newline at end of file
+diff --git a/Makefile.prebuild b/Makefile.prebuild
+index b7d695a..47cbcbf 100644
+--- a/Makefile.prebuild
++++ b/Makefile.prebuild
+@@ -71,10 +71,6 @@ ifeq ($(TARGET), RISCV64_ZVL128B)
+ TARGET_FLAGS = -march=rv64imafdcv -mabi=lp64d
+ endif
+
+-ifeq ($(TARGET), RISCV64_GENERIC)
+-TARGET_FLAGS = -march=rv64imafdc -mabi=lp64d
+-endif
+-
+ all: getarch_2nd
+ 	./getarch_2nd  0 >> $(TARGET_MAKE)
+ 	./getarch_2nd  1 >> $(TARGET_CONF)
+diff --git a/Makefile.riscv64 b/Makefile.riscv64
+index 0ee26c1..bf21fd6 100644
+--- a/Makefile.riscv64
++++ b/Makefile.riscv64
+@@ -14,7 +14,3 @@ ifeq ($(CORE), RISCV64_ZVL128B)
+ CCOMMON_OPT += -march=rv64imafdcv -mabi=lp64d 
+ FCOMMON_OPT += -march=rv64imafdcv -mabi=lp64d
+ endif
+-ifeq ($(CORE), RISCV64_GENERIC)
+-CCOMMON_OPT += -march=rv64imafdc -mabi=lp64d
+-FCOMMON_OPT += -march=rv64imafdc -mabi=lp64d
+-endif
+diff --git a/Makefile.system b/Makefile.system
+index ac278ba..2dd4a68 100644
+--- a/Makefile.system
++++ b/Makefile.system
+@@ -202,7 +202,7 @@ endif
+ # On x86_64 build getarch with march=native unless the compiler is PGI. This is required to detect AVX512 support in getarch.
+ ifeq ($(HOSTARCH), x86_64)
+ ifeq ($(findstring pgcc,$(HOSTCC))$(findstring nvc,$(HOSTCC)),)
+-GETARCH_FLAGS += -march=native
++# GETARCH_FLAGS += -march=native
+ endif
+ endif
+

recipes/recipes_emscripten/openblas-flang/recipe.yaml

@@ -0,0 +1,44 @@
+context:
+  name: openblas-flang
+  version: 0.3.29
+
+package:
+  name: ${{ name }}
+  version: ${{ version }}
+
+source:
+  url: https://github.com/OpenMathLib/OpenBLAS/archive/v${{ version }}.tar.gz
+  sha256: 38240eee1b29e2bde47ebb5d61160207dc68668a54cac62c076bb5032013b1eb
+  patches:
+  - patches/0001-Add-no-implicit-function-declaration-flag.patch
+  - patches/0002-Remove-march-flags.patch
+
+build:
+  number: 0
+
+requirements:
+  build:
+  - ${{ compiler('c') }}
+  - flang_${{ target_platform }}
+  - cmake
+  - make
+  host:
+  - libflang                  # for FortranRuntime
+
+tests:
+- package_contents:
+    lib:
+    - libopenblas.a
+
+about:
+  homepage: http://www.openblas.net/
+  repository: https://github.com/OpenMathLib/OpenBLAS
+  license: BSD-3-Clause
+  license_file: LICENSE
+  summary: An optimized BLAS library based on GotoBLAS2 1.13 BSD version
+
+extra:
+  maintainers:
+    - DerThorsten
+    - anutosh491
+    - IsabelParedes