[PATCH v6 07/13] llvm: forcibly disable __isoc23_strtol usage

[Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>]

In the multiconfig builds the llvm-native build can get reused from the
sstate cache with uninative being bypassed. This can result in the
undefined __isoc23_strtol symbols (which are supported by the uninative,
but not by the host library).

In order to prevent such link issues, forcibly disable usage of C23
strtol functions inside the native LLVM build.

Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
---
 meta/recipes-devtools/llvm/llvm/isoc23.h  | 11 +++++++++++
 meta/recipes-devtools/llvm/llvm_20.1.1.bb |  4 ++++
 2 files changed, 15 insertions(+)

diff --git a/meta/recipes-devtools/llvm/llvm/isoc23.h b/meta/recipes-devtools/llvm/llvm/isoc23.h
new file mode 100644
index 0000000000000000000000000000000000000000..b6738b6aaeb4e140aebad37ba0efb48a29cfac9b
--- /dev/null
+++ b/meta/recipes-devtools/llvm/llvm/isoc23.h
@@ -0,0 +1,11 @@
+/*
+ * Copyright (c) 2024 Qualcomm Technologies, Inc.
+ * SPDX-License-Identifier: Apache-2.0-with-LLVM-exception
+ */
+#include <features.h>
+
+#undef __GLIBC_USE_C23_STRTOL
+#define __GLIBC_USE_C23_STRTOL 0
+
+#undef __GLIBC_USE_C2X_STRTOL
+#define __GLIBC_USE_C2X_STRTOL 0
diff --git a/meta/recipes-devtools/llvm/llvm_20.1.1.bb b/meta/recipes-devtools/llvm/llvm_20.1.1.bb
index b95473c88b64961cb6ae2f4ace14aac4600cf98e..69f19aee59388f92c254c1f049622845713f4e94 100644
--- a/meta/recipes-devtools/llvm/llvm_20.1.1.bb
+++ b/meta/recipes-devtools/llvm/llvm_20.1.1.bb
@@ -27,6 +27,7 @@ SRC_URI = "https://github.com/llvm/llvm-project/releases/download/llvmorg-${PV}/
            file://0007-llvm-allow-env-override-of-exe-path.patch \
            file://0001-AsmMatcherEmitter-sort-ClassInfo-lists-by-name-as-we.patch \
            file://llvm-config \
+           file://isoc23.h \
            "
 SRC_URI[sha256sum] = "4d5ebbd40ce1e984a650818a4bb5ae86fc70644dec2e6d54e78b4176db3332e0"
 UPSTREAM_CHECK_URI = "https://github.com/llvm/llvm-project"
@@ -71,6 +72,9 @@ LLVM_TARGETS ?= "AMDGPU;${@get_llvm_host_arch(bb, d)}"
 ARM_INSTRUCTION_SET:armv5 = "arm"
 ARM_INSTRUCTION_SET:armv4t = "arm"
 
+
+BUILD_CPPFLAGS += "-include ${UNPACKDIR}/isoc23.h"
+
 EXTRA_OECMAKE += "-DLLVM_ENABLE_ASSERTIONS=OFF \
                   -DLLVM_ENABLE_EXPENSIVE_CHECKS=OFF \
                   -DLLVM_ENABLE_PIC=ON \

-- 
2.39.5