toolchain.cmake: properly set toolchain for crossbuilding on Alpine L…

…inux (#11608) Port changes from dotnet/runtime#76500 Changes allow for proper toolchain detection on Alpine Linux. Co-authored-by: Jan Vorlicek <[email protected]>
dotnet · Apr 27, 2023 · dd41f27 · dd41f27
1 parent 469dcc0
commit dd41f27
Showing 1 changed file with 27 additions and 5 deletions.
diff --git a/eng/common/cross/toolchain.cmake b/eng/common/cross/toolchain.cmake
@@ -67,13 +67,25 @@ elseif(TARGET_ARCH_NAME STREQUAL "armv6")
  endif()
 elseif(TARGET_ARCH_NAME STREQUAL "ppc64le")
  set(CMAKE_SYSTEM_PROCESSOR ppc64le)
- set(TOOLCHAIN "powerpc64le-linux-gnu")
+ if(EXISTS ${CROSS_ROOTFS}/usr/lib/gcc/powerpc64le-alpine-linux-musl)
+ set(TOOLCHAIN "powerpc64le-alpine-linux-musl")
+ else()
+ set(TOOLCHAIN "powerpc64le-linux-gnu")
+ endif()
 elseif(TARGET_ARCH_NAME STREQUAL "riscv64")
  set(CMAKE_SYSTEM_PROCESSOR riscv64)
- set(TOOLCHAIN "riscv64-linux-gnu")
+ if(EXISTS ${CROSS_ROOTFS}/usr/lib/gcc/riscv64-alpine-linux-musl)
+ set(TOOLCHAIN "riscv64-alpine-linux-musl")
+ else() 
+ set(TOOLCHAIN "riscv64-linux-gnu")
+ endif()
 elseif(TARGET_ARCH_NAME STREQUAL "s390x")
  set(CMAKE_SYSTEM_PROCESSOR s390x)
- set(TOOLCHAIN "s390x-linux-gnu")
+ if(EXISTS ${CROSS_ROOTFS}/usr/lib/gcc/s390x-alpine-linux-musl)
+ set(TOOLCHAIN "s390x-alpine-linux-musl")
+ else()
+ set(TOOLCHAIN "s390x-linux-gnu")
+ endif()
 elseif(TARGET_ARCH_NAME STREQUAL "x64")
  set(CMAKE_SYSTEM_PROCESSOR x86_64)
  if(EXISTS ${CROSS_ROOTFS}/usr/lib/gcc/x86_64-alpine-linux-musl)
@@ -92,7 +104,11 @@ elseif(TARGET_ARCH_NAME STREQUAL "x64")
  endif()
 elseif(TARGET_ARCH_NAME STREQUAL "x86")
  set(CMAKE_SYSTEM_PROCESSOR i686)
- set(TOOLCHAIN "i686-linux-gnu")
+ if(EXISTS ${CROSS_ROOTFS}/usr/lib/gcc/i586-alpine-linux-musl)
+ set(TOOLCHAIN "i586-alpine-linux-musl")
+ else()
+ set(TOOLCHAIN "i686-linux-gnu")
+ endif()
  if(TIZEN)
  set(TIZEN_TOOLCHAIN "i586-tizen-linux-gnu/9.2.0")
  endif()
@@ -266,8 +282,11 @@ elseif(TARGET_ARCH_NAME MATCHES "^(arm64|x64)$")
  add_toolchain_linker_flag("-Wl,--rpath-link=${CROSS_ROOTFS}/usr/lib64/gcc/${TIZEN_TOOLCHAIN}")
  endif()
 elseif(TARGET_ARCH_NAME STREQUAL "x86")
+ if(EXISTS ${CROSS_ROOTFS}/usr/lib/gcc/i586-alpine-linux-musl)
+ add_toolchain_linker_flag("--target=${TOOLCHAIN}")
+ add_toolchain_linker_flag("-Wl,--rpath-link=${CROSS_ROOTFS}/usr/lib/gcc/${TOOLCHAIN}")
+ endif()
  add_toolchain_linker_flag(-m32)
-
  if(TIZEN)
  add_toolchain_linker_flag("-B${CROSS_ROOTFS}/usr/lib/gcc/${TIZEN_TOOLCHAIN}")
  add_toolchain_linker_flag("-L${CROSS_ROOTFS}/lib")
@@ -307,6 +326,9 @@ if(TARGET_ARCH_NAME MATCHES "^(arm|armel)$")
  add_compile_options(-mfloat-abi=softfp)
  endif()
 elseif(TARGET_ARCH_NAME STREQUAL "x86")
+ if(EXISTS ${CROSS_ROOTFS}/usr/lib/gcc/i586-alpine-linux-musl)
+ add_compile_options(--target=${TOOLCHAIN})
+ endif()
  add_compile_options(-m32)
  add_compile_options(-Wno-error=unused-command-line-argument)
 endif()