[OE-core] [PATCH 2/4] ruby: Remove __has_include and __has_include_next from preprocessed header file

Khem Raj raj.khem at gmail.com
Thu Jan 23 20:00:39 UTC 2020

one of the build steps ruby has is that it generated rb_mjit_header.h
during configure using gcc preprocessor using -dD which emits built-in
defines as well, problem happens when this header is later included in
subsequent compiles, where compiler errors out stating that an existing
internal define is redefined

| /tmp/20200123-2021083-2c601q.h:13849:9: error: "__has_include" cannot be used as a macro name
| 13849 | #define __has_include __has_include
|       |         ^~~~~~~~~~~~~
| compilation terminated due to -Wfatal-errors.

Since compiler already will take care of it internally we can edit it
out from this header file

Signed-off-by: Khem Raj <raj.khem at gmail.com>
 meta/recipes-devtools/ruby/ruby.inc | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/meta/recipes-devtools/ruby/ruby.inc b/meta/recipes-devtools/ruby/ruby.inc
index ce1b02f012..d5cd329e65 100644
--- a/meta/recipes-devtools/ruby/ruby.inc
+++ b/meta/recipes-devtools/ruby/ruby.inc
@@ -38,3 +38,10 @@ do_configure_prepend() {
     sed -i "s#%%TARGET_CFLAGS%%#$CFLAGS#; s#%%TARGET_LDFLAGS%%#$LDFLAGS#" ${S}/common.mk
     rm -rf ${S}/ruby/
+do_compile_prepend() {
+    if [ -e ${B}/rb_mjit_header.h ]; then
+        sed -i -e "/#define __has_include __has_include/d" ${B}/rb_mjit_header.h
+        sed -i -e "/#define __has_include_next __has_include_next/d" ${B}/rb_mjit_header.h
+    fi

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