Misc CMake file fixes for linking in Windows

- Set the target linker language for the flang libraries to CXX on windows.

  This makes sure link.exe from Visual Studio is used to link the libraries,
  even though the libraries include fortran code. CMake is not able to detect this
  since the flang fortran compiler is not working at CMake configure time and thus
  the CMAKE_Fortran_COMPILER_ID is unknown.

- Add WINDOWS_EXPORT_ALL_SYMBOLS for shared flang library

- Use "lib" prefix instead of "_static" suffix for static runtime libraries.

  This is more in sync with windows default names
  (e.g. ucrt.lib as import library for ucrt.dll and libucrt.lib for the static runtime).

- Set WINDOWS_EXPORT_ALL_SYMBOLS property for for shared flangrti and ompstub targets.

  This works around the issue with missing __declspec(dllexport/dllimport) declerations
  in the source files.

Author: Albert Ziegenhagel

runtime/flang/CMakeLists.txt

@@ -187,7 +187,7 @@ SET(FTN_INTRINSICS_DESC_DEP
   red_any.c
   red_count.c
   red_findloc.c
-  red_iany.c 
+  red_iany.c
   red_maxloc.c
   red_minloc.c
   red_maxval.c
@@ -418,7 +418,7 @@ separate_arguments(SEPARATED_CMAKE_Fortran_FLAGS NATIVE_COMMAND ${CMAKE_Fortran_
 add_custom_command(
   OUTPUT "${I8_FILES_DIR}/ieee_arithmetic.F95"
   COMMAND "${CMAKE_Fortran_COMPILER}" -E -cpp ${SEPARATED_CMAKE_Fortran_FLAGS}
-  "${CMAKE_CURRENT_SOURCE_DIR}/ieee_arithmetic.F95" -DDESC_I8 
+  "${CMAKE_CURRENT_SOURCE_DIR}/ieee_arithmetic.F95" -DDESC_I8
   > "${I8_FILES_DIR}/ieee_arithmetic.F95"
   COMMENT "Preprocessing ieee_arithmetic.F95"
   VERBATIM
@@ -428,7 +428,7 @@ add_custom_command(
 add_custom_command(
   OUTPUT "${I8_FILES_DIR}/ieee_exceptions.F95"
   COMMAND "${CMAKE_Fortran_COMPILER}" -E -cpp ${SEPARATED_CMAKE_Fortran_FLAGS}
-  "${CMAKE_CURRENT_SOURCE_DIR}/ieee_exceptions.F95" -DDESC_I8 
+  "${CMAKE_CURRENT_SOURCE_DIR}/ieee_exceptions.F95" -DDESC_I8
   > "${I8_FILES_DIR}/ieee_exceptions.F95"
   COMMENT "Preprocessing ieee_exceptions.F95"
   VERBATIM
@@ -460,7 +460,7 @@ FOREACH(file ${FTN_SUPPORT_DESC_DEP})
 ENDFOREACH(file)
 
 LIST(APPEND FTN_SUPPORT_DESC_DEP ieee_arithmetic.F95 ieee_exceptions.F95 norm2_1.F95)
-LIST(APPEND FTN_SUPPORT_I8 
+LIST(APPEND FTN_SUPPORT_I8
 "${I8_FILES_DIR}/ieee_arithmetic.F95"
 "${I8_FILES_DIR}/ieee_exceptions.F95"
 "${I8_FILES_DIR}/norm2_1.F95"
@@ -475,7 +475,11 @@ add_flang_library(flang_static
   ${FTN_SUPPORT_I8}
   ${SHARED_SOURCES}
   )
+if (MSVC)
+set_property(TARGET flang_static PROPERTY OUTPUT_NAME libflang)
+else()
 set_property(TARGET flang_static PROPERTY OUTPUT_NAME flang)
+endif()
 
 set(SHARED_LIBRARY TRUE)
 add_flang_library(flang_shared
@@ -501,13 +505,17 @@ add_dependencies(flang_shared flang_static)
 
 target_link_libraries(flang_shared ${CMAKE_BINARY_DIR}/${CMAKE_CFG_INTDIR}/lib/libflangrti.so)
 # Resolve symbols against libm and librt
-target_link_libraries(flang_shared m rt)
+if (NOT MSVC)
+  target_link_libraries(flang_shared m rt)
+else()
+  set_target_properties(flang_shared PROPERTIES WINDOWS_EXPORT_ALL_SYMBOLS TRUE)
+endif()
 
 set(SHARED_LIBRARY FALSE)
 
 set_property(
   SOURCE ${FTN_INTRINSICS_DESC_INDEP} ${FTN_INTRINSICS_DESC_DEP} ${SHARED_SOURCES}
-  PROPERTY COMPILE_DEFINITIONS 
+  PROPERTY COMPILE_DEFINITIONS
   PGF90
   KANJI
   INT32PTR64
@@ -517,7 +525,7 @@ set_property(
 
 set_property(
   SOURCE ${FTN_INTRINSICS_I8}
-  PROPERTY COMPILE_DEFINITIONS 
+  PROPERTY COMPILE_DEFINITIONS
   PGF90
   KANJI
   INT32PTR64
@@ -527,16 +535,16 @@ set_property(
  )
 
 set_property(
-  SOURCE ${FTN_SUPPORT_DESC_INDEP} ${FTN_SUPPORT_DESC_DEP} 
-  PROPERTY COMPILE_DEFINITIONS 
+  SOURCE ${FTN_SUPPORT_DESC_INDEP} ${FTN_SUPPORT_DESC_DEP}
+  PROPERTY COMPILE_DEFINITIONS
   INT32PTR64
   TM_I8
   HAVE_LONG_LONG_INT
  )
 
 set_property(
-  SOURCE ${FTN_SUPPORT_I8} 
-  PROPERTY COMPILE_DEFINITIONS 
+  SOURCE ${FTN_SUPPORT_I8}
+  PROPERTY COMPILE_DEFINITIONS
   INT32PTR64
   TM_I8
   DESC_I8
@@ -585,30 +593,30 @@ if(NOT ${CMAKE_GENERATOR} STREQUAL "Ninja")
   # State a dependency on the module
   set_source_files_properties(
     ${I8_FILES_DIR}/ieee_arithmetic.F95
-    PROPERTIES 
+    PROPERTIES
     COMPILE_DEFINITIONS DESC_I8
     OBJECT_DEPENDS ${CMAKE_Fortran_MODULE_DIRECTORY}/iso_c_binding.mod
     OBJECT_OUTPUTS ${CMAKE_Fortran_MODULE_DIRECTORY}/ieee_arithmetic_la.mod
     )
 
   set_source_files_properties(
     ${I8_FILES_DIR}/ieee_exceptions.F95
-    PROPERTIES 
+    PROPERTIES
     COMPILE_DEFINITIONS DESC_I8
     OBJECT_DEPENDS ${CMAKE_Fortran_MODULE_DIRECTORY}/iso_c_binding.mod
     OBJECT_OUTPUTS ${CMAKE_Fortran_MODULE_DIRECTORY}/ieee_exceptions_la.mod
     )
 
   set_source_files_properties(
     norm2_1.F95
-    PROPERTIES 
+    PROPERTIES
     OBJECT_DEPENDS ${CMAKE_Fortran_MODULE_DIRECTORY}/ieee_arithmetic.mod
     OBJECT_DEPENDS ${CMAKE_Fortran_MODULE_DIRECTORY}/ieee_exceptions.mod
   )
 
   set_source_files_properties(
      ${I8_FILES_DIR}/norm2_1.F95
-    PROPERTIES 
+    PROPERTIES
     OBJECT_DEPENDS ${CMAKE_Fortran_MODULE_DIRECTORY}/ieee_arithmetic_la.mod
     OBJECT_DEPENDS ${CMAKE_Fortran_MODULE_DIRECTORY}/ieee_exceptions_la.mod
   )
@@ -618,8 +626,8 @@ set_target_properties(flang_static flang_shared
   PROPERTIES
   ARCHIVE_OUTPUT_DIRECTORY ${FLANG_RTE_LIB_DIR}
   )
-  
-target_include_directories(flang_static 
+
+target_include_directories(flang_static
   PRIVATE
   ${CMAKE_CURRENT_SOURCE_DIR}
   ${CMAKE_CURRENT_BINARY_DIR}
@@ -632,20 +640,24 @@ target_include_directories(flang_shared
   )
 
 # Make sure the compiler is built before we bootstrap
-add_dependencies(flang_static 
+add_dependencies(flang_static
   flang1
   flang2
   )
 
 # Make sure the compiler is built before we bootstrap
-add_dependencies(flang_shared 
+add_dependencies(flang_shared
   flang1
   flang2
   )
 
-target_compile_options(flang_static PRIVATE -fPIC)
-
-target_compile_options(flang_shared PRIVATE -fPIC)
+if (NOT MSVC)
+  target_compile_options(flang_static PRIVATE -fPIC)
+  target_compile_options(flang_shared PRIVATE -fPIC)
+else()
+  set_target_properties(flang_static PROPERTIES LINKER_LANGUAGE CXX)
+  set_target_properties(flang_shared PROPERTIES LINKER_LANGUAGE CXX)
+endif()
 
 target_compile_options(flang_static PUBLIC $<$<COMPILE_LANGUAGE:Fortran>:-Mreentrant>)
 

runtime/flangrti/CMakeLists.txt

@@ -10,7 +10,7 @@ SET(ASM_OPTIONS "-DLINUX_ELF")
 SET(CMAKE_ASM_FLAGS "${CFLAGS} ${ASM_OPTIONS}" )
 
 if( ${TARGET_ARCHITECTURE} STREQUAL "x86_64" )
-  set(ARCH_DEP_FILES 
+  set(ARCH_DEP_FILES
     x86_64-Linux/x86_daz.c
     x86_64-Linux/x86_flushz.c
     x86_64-Linux/dumpregs.c
@@ -61,7 +61,11 @@ add_flang_library(flangrti_static
   ${PGC_SRC_FILES}
   ${SHARED_SOURCES}
   )
-set_property(TARGET flangrti_static PROPERTY OUTPUT_NAME flangrti)
+if (MSVC)
+  set_property(TARGET flangrti_static PROPERTY OUTPUT_NAME libflangrti)
+else()
+  set_property(TARGET flangrti_static PROPERTY OUTPUT_NAME flangrti)
+endif()
 
 
 set(SHARED_LIBRARY TRUE)
@@ -81,14 +85,14 @@ endif()
 
 # Import OpenMP
 if (NOT DEFINED LIBOMP_EXPORT_DIR)
-  find_library( 
+  find_library(
     FLANG_LIBOMP
     libomp.so
     HINTS ${CMAKE_BINARY_DIR}/lib)
   target_link_libraries(flangrti_shared ${FLANG_LIBOMP})
 endif()
 
-find_library( 
+find_library(
   LIBPGMATH
   libpgmath.so
   HINTS ${CMAKE_BINARY_DIR}/lib)
@@ -118,9 +122,12 @@ target_include_directories(flangrti_shared
 set_target_properties(flangrti_shared flangrti_static
                       PROPERTIES ARCHIVE_OUTPUT_DIRECTORY ${FLANG_RTE_LIB_DIR})
 
-target_compile_options(flangrti_static PRIVATE -fPIC)
-
-target_compile_options(flangrti_shared PRIVATE -fPIC)
+if (NOT MSVC)
+  target_compile_options(flangrti_static PRIVATE -fPIC)
+  target_compile_options(flangrti_shared PRIVATE -fPIC)
+else()
+  set_target_properties(flangrti_shared PROPERTIES WINDOWS_EXPORT_ALL_SYMBOLS TRUE)
+endif()
 
 target_compile_options(flangrti_static PUBLIC $<$<COMPILE_LANGUAGE:Fortran>:-Mreentrant>)
 

runtime/ompstub/CMakeLists.txt

@@ -7,11 +7,18 @@
 set(OMPSTUB_SRC init_nomp.c  ompstubs.c)
 
 add_flang_library(ompstub_static ${OMPSTUB_SRC})
-set_property(TARGET ompstub_static PROPERTY OUTPUT_NAME ompstub)
+if (MSVC)
+  set_property(TARGET ompstub_static PROPERTY OUTPUT_NAME libompstub)
+else()
+  set_property(TARGET ompstub_static PROPERTY OUTPUT_NAME ompstub)
+endif()
 
 set(SHARED_LIBRARY TRUE)
 add_flang_library(ompstub_shared ${OMPSTUB_SRC})
 set_property(TARGET ompstub_shared PROPERTY OUTPUT_NAME ompstub)
+if (MSVC)
+  set_target_properties(ompstub_shared PROPERTIES WINDOWS_EXPORT_ALL_SYMBOLS TRUE)
+endif()
 set(SHARED_LIBRARY FALSE)
 
 set_target_properties(ompstub_static ompstub_shared