From edca114de1c04bdce4fe6b71ab42f4b0aa2e88e7 Mon Sep 17 00:00:00 2001
From: Changqing Li <changqing.li@windriver.com>
Date: Tue, 7 Dec 2021 05:04:15 +0000
Subject: clang: for x86_64, correct GCC install search path for OpenEmbedded
 Host

Build on OpenEmbedded Host, compiler-rt-native do_configure failed with
following error:
compiler-rt-native/13.0.1-r0/recipe-sysroot-native/usr/bin/clang -target x86_64-linux
-isystem/path/to/x86_64-linux/compiler-rt-native/13.0.1-r0/recipe-sysroot-native/usr/include
-O2 -pipe
/path/to/compiler-rt-native/13.0.1-r0/recipe-sysroot-native/usr/share/cmake-3.21/Modules/CMakeCCompilerABI.c`
|     /build/tmp-glibc/hosttools/ld: cannot find crtbeginS.o: No such file or directory
|     /build/tmp-glibc/hosttools/ld: cannot find -lgcc
|     /build/tmp-glibc/hosttools/ld: cannot find -lgcc
|     clang-13: error: linker command failed with exit code 1 (use -v to see invocation)

Since OpenEmbedded Host's gcc install path is different with clang's
default search form, patch for OpenEmbedded Host's gcc library install
path.

Signed-off-by: Changqing Li <changqing.li@windriver.com>
---
 recipes-devtools/clang/llvm-project-source.inc | 31 ++++++++++++++++++++++++++
 1 file changed, 31 insertions(+)

(limited to 'recipes-devtools/clang/llvm-project-source.inc')

diff --git a/recipes-devtools/clang/llvm-project-source.inc b/recipes-devtools/clang/llvm-project-source.inc
index de7ba8a..a840030 100644
--- a/recipes-devtools/clang/llvm-project-source.inc
+++ b/recipes-devtools/clang/llvm-project-source.inc
@@ -22,6 +22,10 @@ PACKAGES = ""
 # space separated list of additional distro vendor values we want to support e.g.
 # "yoe webos" or "-yoe -webos" '-' is optional
 CLANG_EXTRA_OE_VENDORS ?= "${TARGET_VENDOR} ${SDK_VENDOR}"
+# Extra OE DISTRO that want to support as build host. space separated list of additional distro.
+# ":" separated the ID in "/etc/os-release" and the triple for finding gcc on this OE DISTRO.
+# eg: "poky:poky wrlinux:wrs"
+CLANG_EXTRA_OE_DISTRO ?= "poky:poky"
 
 python add_distro_vendor() {
     import subprocess
@@ -51,6 +55,33 @@ python add_distro_vendor() {
     subprocess.check_output(cmd, stderr=subprocess.STDOUT, shell=True)
     cmd = d.expand("sed -i 's#//CLANG_EXTRA_OE_VENDORS_CASES#%s#g' -i ${S}/llvm/lib/Support/Triple.cpp" % (case))
     subprocess.check_output(cmd, stderr=subprocess.STDOUT, shell=True)
+
+
+    case = ""
+    triple = ""
+    name = ""
+    check = ""
+    oe_names = ""
+    distros = d.getVar('CLANG_EXTRA_OE_DISTRO')
+    for distro in distros.split():
+        distro_id = distro.split(":")[0].replace('-','_')
+        distro_triple = distro.split(":")[1]
+        case += '\\n    .Case("' + distro_id + '", Distro::' + distro_id.upper() + ')'
+        triple += '\\n   if (Distro.Is' + distro_id.upper() + '())\\n     return "x86_64-' + distro_triple + '-linux",'
+        name += '\\n    '+ distro_id.upper() + ','
+        check += '\\nbool Is' + distro_id.upper() + '() const { return DistroVal == ' + distro_id.upper() + '; }'
+        oe_names +=  distro_id.upper() + ' ||'
+
+    check += '\\nbool IsOpenEmbedded() const { return DistroVal == ' + oe_names[0:-3] + '; }'
+
+    cmd = d.expand("sed -i 's#//CLANG_EXTRA_OE_DISTRO_NAME#%s#g' ${S}/clang/include/clang/Driver/Distro.h" % (name))
+    subprocess.check_output(cmd, stderr=subprocess.STDOUT, shell=True)
+    cmd = d.expand("sed -i 's#//CLANG_EXTRA_OE_DISTRO_CHECK#%s#g' ${S}/clang/include/clang/Driver/Distro.h" % (check))
+    subprocess.check_output(cmd, stderr=subprocess.STDOUT, shell=True)
+    cmd = d.expand("sed -i 's#//CLANG_EXTRA_OE_DISTRO_TRIPLES#%s#g' ${S}/clang/lib/Driver/ToolChains/Linux.cpp" % (triple))
+    subprocess.check_output(cmd, stderr=subprocess.STDOUT, shell=True)
+    cmd = d.expand("sed -i 's#//CLANG_EXTRA_OE_DISTRO_CASES#%s#g' -i ${S}/clang/lib/Driver/Distro.cpp" % (case))
+    subprocess.check_output(cmd, stderr=subprocess.STDOUT, shell=True)
 }
 
 do_patch[postfuncs] += "add_distro_vendor"
-- 
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