CRuby headers need -fdeclspec on system clang on macOS Mojave

oracle · Oct 26, 2023 · 047f6bd · 047f6bd
1 parent 1af7965
commit 047f6bd
Showing 1 changed file with 8 additions and 1 deletion.
diff --git a/src/main/c/cext-trampoline/Makefile b/src/main/c/cext-trampoline/Makefile
@@ -10,7 +10,14 @@ endif
 # cc should be enough to compile this library but might produce different warnings based on the system compiler.
 # If that is the case and fails the build, it might be better to use instead:
 # CC := $(GRAALVM_TOOLCHAIN_CC)
-CC := cc
+
+# Same values as in RbConfig
+ifeq ($(OS),Darwin)
+CC := clang -fdeclspec
+else
+CC := gcc
+endif
+
 CFLAGS := -Wall -Werror -fPIC -std=c99 -g
 LDFLAGS := -m64