The previous attempt actually broke ASM in media-libs/vulkan-loader entirely so that it fell back to C code. After much experimentation and combing through strace output, I found that -x assembler is needed to handle non-standard file extentions and linking is done as a separate step. CMAKE_ASM-ATT_LINK_FLAGS therefore needs to be defined with -nostdlib to avoid errors about undefined main symbols.
Closes: https://bugs.gentoo.org/625844 --- One user has confirmed that this patch works for vulkan-loader and I'd like a dev or two to also confirm this before I merge. eclass/cmake-utils.eclass | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/eclass/cmake-utils.eclass b/eclass/cmake-utils.eclass index f8853be502a1..f6952ec09efd 100644 --- a/eclass/cmake-utils.eclass +++ b/eclass/cmake-utils.eclass @@ -520,7 +520,8 @@ cmake-utils_src_configure() { fi cat > "${build_rules}" <<- _EOF_ || die SET (CMAKE_ASM_COMPILE_OBJECT "<CMAKE_ASM_COMPILER> <DEFINES> ${includes} ${CPPFLAGS} <FLAGS> -o <OBJECT> -c <SOURCE>" CACHE STRING "ASM compile command" FORCE) - SET (CMAKE_ASM-ATT_COMPILE_OBJECT "<CMAKE_ASM_COMPILER> <DEFINES> ${includes} ${CPPFLAGS} <FLAGS> -o <OBJECT> -c <SOURCE>" CACHE STRING "ASM compile command" FORCE) + SET (CMAKE_ASM-ATT_COMPILE_OBJECT "<CMAKE_ASM-ATT_COMPILER> <DEFINES> ${includes} ${CPPFLAGS} <FLAGS> -o <OBJECT> -c -x assembler <SOURCE>" CACHE STRING "ASM-ATT compile command" FORCE) + SET (CMAKE_ASM-ATT_LINK_FLAGS "-nostdlib" CACHE STRING "ASM-ATT link flags" FORCE) SET (CMAKE_C_COMPILE_OBJECT "<CMAKE_C_COMPILER> <DEFINES> ${includes} ${CPPFLAGS} <FLAGS> -o <OBJECT> -c <SOURCE>" CACHE STRING "C compile command" FORCE) SET (CMAKE_CXX_COMPILE_OBJECT "<CMAKE_CXX_COMPILER> <DEFINES> ${includes} ${CPPFLAGS} <FLAGS> -o <OBJECT> -c <SOURCE>" CACHE STRING "C++ compile command" FORCE) SET (CMAKE_Fortran_COMPILE_OBJECT "<CMAKE_Fortran_COMPILER> <DEFINES> ${includes} ${FCFLAGS} <FLAGS> -o <OBJECT> -c <SOURCE>" CACHE STRING "Fortran compile command" FORCE) -- 2.16.1
