internal/rosa/cmake: use DESTDIR instead of --prefix

Turns out --prefix is deeply broken, and DESTDIR works even when using ninja.

Signed-off-by: Ophestra <cat@gensokyo.uk>

cmd/mbf/main.go

@@ -893,7 +893,6 @@ func main() {
 			"with-toolchain", command.BoolFlag(false),
 			"Include the stage2 LLVM toolchain",
 		)
-
 	}
 
 	c.Command(

internal/rosa/cmake.go

@@ -98,6 +98,6 @@ cmake -G ` + generate + ` \
 	-DCMAKE_INSTALL_PREFIX=/system \
 	'/usr/src/` + name + `/` + filepath.Join(attr.Append...) + `'
 cmake --build . --parallel=` + jobsE + `
-cmake --install . --prefix=/work/system
+DESTDIR=/work cmake --install .
 ` + script
 }

internal/rosa/package/spirv.az

@@ -57,7 +57,6 @@ package spirv-llvm-translator {
 		tag = "v"+version;
 		checksum = "JZAaV5ewYcm-35YA_U2BM2IcsQouZtX1BLZR0zh2vSlfEXMsT5OCtY4Gh5RJkcGy";
 	};
-	patches = [ "remove-early-prefix.patch" ];
 
 	// litArgs emits shell syntax
 	early = "\nexport LIT_OPTS=" + litArgs {

internal/rosa/package/spirv/remove-early-prefix.patch

@@ -1,21 +0,0 @@
-diff --git a/CMakeLists.txt b/CMakeLists.txt
-index c000a77e..f18f3fde 100644
---- a/CMakeLists.txt
-+++ b/CMakeLists.txt
-@@ -164,7 +164,7 @@ install(
-     ${LLVM_SPIRV_INCLUDE_DIRS}/LLVMSPIRVOpts.h
-     ${LLVM_SPIRV_INCLUDE_DIRS}/LLVMSPIRVExtensions.inc
-   DESTINATION
--    ${CMAKE_INSTALL_PREFIX}/include/LLVMSPIRVLib
-+    include/LLVMSPIRVLib
- )
- 
- configure_file(LLVMSPIRVLib.pc.in ${CMAKE_BINARY_DIR}/LLVMSPIRVLib.pc @ONLY)
-@@ -172,5 +172,5 @@ install(
-   FILES
-     ${CMAKE_BINARY_DIR}/LLVMSPIRVLib.pc
-   DESTINATION
--    ${CMAKE_INSTALL_PREFIX}/lib${LLVM_LIBDIR_SUFFIX}/pkgconfig
-+    lib${LLVM_LIBDIR_SUFFIX}/pkgconfig
- )
-;