Misc CMake file fixes for compiling in Windows

- Call project command at the beginning if compiling flang in standalone mode

  This makes sure that CMake variables like CMAKE_SYSTEM_PROCESSOR
  are defined and removes the need for hacks like calling uname -m

- Prevent CMake from running tests to check if flang works

  flang.exe is not fully functional and CMake tries to run checks on
  the Fortran compiler (more than in the Unix case) and fails.
  By setting CMake options like CMAKE_Fortran_COMPILER_SUPPORTS_F90,
  CMake accepts flang.exe as the Fortran compiler

- Alias AMD64/amd64 to x86_64

- Alias arm64 to x86_64

- Preprocessor options like TARGET_LINUX are replaced with TARGET_${OS}

- Set Fortran_MODULE_DIRECTORY to a different directory for static
  builds in Ninja generator

  This makes it possible for flang to be built with Ninja on windows.
  For other generators https://gitlab.kitware.com/cmake/cmake/-/merge_requests/5518
  needs to be used when it is in a CMake release

- Link to libm only on non-windows

- Remove .so from name when linking

  When linking libomp.so is not portable. Use NAMES omp libomp for
  portability

- Call built executables using the target name instead of full path

  The full path to the built executable given is not portable, but
  using the target name is portable as CMake will internally figure
  out the full path

- Sort upperilm.in using portable CMake code

CMakeLists.txt

@@ -6,54 +6,56 @@
 
 cmake_minimum_required(VERSION 3.3)
 
+# If we are not building as a part of LLVM, build Flang as a
+# standalone project, using LLVM as an external library:
+if( CMAKE_SOURCE_DIR STREQUAL CMAKE_CURRENT_SOURCE_DIR )
+  project(Flang)
+endif()
+
 # In order to bootstrap the runtime library we need to skip
 # CMake's Fortran tests
 SET(CMAKE_Fortran_COMPILER_WORKS 1)
-
-if( NOT DEFINED TARGET_ARCHITECTURE )
-  execute_process(COMMAND uname -m OUTPUT_STRIP_TRAILING_WHITESPACE
-                  OUTPUT_VARIABLE TARGET_ARCHITECTURE)
+if (WIN32)
+  SET(CMAKE_Fortran_ABI_COMPILED 0)
+  SET(CMAKE_Fortran_COMPILER_SUPPORTS_F90 1)
 endif()
 
-if( NOT DEFINED TARGET_OS )
-  execute_process(COMMAND uname -s OUTPUT_STRIP_TRAILING_WHITESPACE
-                  OUTPUT_VARIABLE TARGET_OS)
+set(TARGET_OS ${CMAKE_SYSTEM_NAME} CACHE STRING "Target OS")
+set(TARGET_ARCHITECTURE ${CMAKE_SYSTEM_PROCESSOR} CACHE STRING "Target Architecture")
+
+if (POLICY CMP0054)
+  cmake_policy(SET CMP0054 NEW)
 endif()
 
 if( ${TARGET_OS} STREQUAL "Linux" )
   set(OS "LINUX")
   set(OSNAME "Linux")
-  if( ${TARGET_ARCHITECTURE} STREQUAL "x86_64" )
-    set(ARCHNAME x86-64)
-    set(ARCH X86)
-    set(WRDSZ 64)
-  elseif( ${TARGET_ARCHITECTURE} STREQUAL "aarch64" )
-    set(ARCHNAME aarch64)
-    set(ARCH ARM)
-    set(WRDSZ 64)
-  elseif( ${TARGET_ARCHITECTURE} STREQUAL "ppc64le" )
-    set(ARCHNAME ppc64le)
-    set(ARCH POWER)
-    set(WRDSZ 64)
-  else()
-    message("Unsupported architecture: ${TARGET_ARCHITECTURE}" )
-    return()
-  endif()
 else()
   message("Unsupported OS: ${TARGET_OS}" )
   return()
 endif()
 
-# The cmake documentation states that these are set.  They are not so we 
-# set them here
-set(CMAKE_HOST_SYSTEM_NAME ${TARGET_OS})
-set(CMAKE_HOST_SYSTEM_PROCESSOR ${TARGET_ARCHITECTURE})
+if (${TARGET_ARCHITECTURE} MATCHES "^(x86_64|AMD64|amd64)$")
+  set(TARGET_ARCHITECTURE x86_64)
+  set(ARCHNAME x86-64)
+  set(ARCH X86)
+elseif (${TARGET_ARCHITECTURE} MATCHES "^(aarch64|arm64)$")
+  set(TARGET_ARCHITECTURE aarch64)
+  set(ARCHNAME aarch64)
+  set(ARCH ARM)
+elseif( ${TARGET_ARCHITECTURE} STREQUAL "ppc64le" )
+  set(ARCHNAME ppc64le)
+  set(ARCH POWER)
+else()
+  message("Unsupported architecture: ${TARGET_ARCHITECTURE}" )
+  return()
+endif()
+
+math(EXPR WRDSZ "${CMAKE_SIZEOF_VOID_P} * 8")
 
 # If we are not building as a part of LLVM, build Flang as an
 # standalone project, using LLVM as an external library:
 if( CMAKE_SOURCE_DIR STREQUAL CMAKE_CURRENT_SOURCE_DIR )
-  project(Flang)
-
   # Rely on llvm-config.
   set(CONFIG_OUTPUT)
 

runtime/CMakeLists.txt

@@ -9,31 +9,31 @@ set (RUNTIME_SHARED_DIR ${CMAKE_CURRENT_SOURCE_DIR}/shared)
 add_definitions(
  -DMAXCPUS=256 
  -DMAXCPUSL=8 
- -DMAXCPUSR=8 
- -DTARGET_LINUX 
- -DTARGET_LLVM 
- -DLINUX 
+ -DMAXCPUSR=8
+ -DTARGET_LLVM
  -DPGF90 
  -DPGFLANG
  -DNATIVE_FPCVT
  -DPGI_LITTLE_ENDIAN
  -DINLINE_MEMOPS
+ -DTARGET_${OS}
+ -D${OS}
 )
 
 if( ${TARGET_ARCHITECTURE} STREQUAL "x86_64" )
   add_definitions(
    -DTARGET_X8664
-   -DTARGET_LINUX_X8664
+   -DTARGET_${OS}_X8664
   )
 elseif( ${TARGET_ARCHITECTURE} STREQUAL "aarch64" )
   add_definitions(
    -DTARGET_LLVM_ARM64
-   -DTARGET_LINUX_ARM
+   -DTARGET_${OS}_ARM
   )
 elseif( ${TARGET_ARCHITECTURE} STREQUAL "ppc64le" )
   add_definitions(
-    -DTARGET_LINUX_POWER
-    -DLINUX_POWER
+    -DTARGET_${OS}_POWER
+    -D${OS}_POWER
   )
 endif()
 

runtime/flang/CMakeLists.txt

@@ -8,7 +8,11 @@ enable_language(C ASM Fortran) # Enable assembly and Fortran
 
 SET(ASM_OPTIONS "-DLINUX_ELF")
 SET(CMAKE_ASM_FLAGS "${CFLAGS} ${ASM_OPTIONS}" )
-SET(CMAKE_SHARED_LINKER_FLAGS "-no-flang-libs")
+if (NOT MSVC)
+  SET(CMAKE_SHARED_LINKER_FLAGS "-no-flang-libs")
+else ()
+  SET(CMAKE_Fortran_FLAGS "${CMAKE_Fortran_FLAGS} -no-flang-libs")
+endif ()
 
 # We are using Fortran driver to build this library with fresh compiler
 # components, so point its binary directory to the build directory to pick up
@@ -476,9 +480,9 @@ add_flang_library(flang_static
   ${SHARED_SOURCES}
   )
 if (MSVC)
-set_property(TARGET flang_static PROPERTY OUTPUT_NAME libflang)
+  set_property(TARGET flang_static PROPERTY OUTPUT_NAME libflang)
 else()
-set_property(TARGET flang_static PROPERTY OUTPUT_NAME flang)
+  set_property(TARGET flang_static PROPERTY OUTPUT_NAME flang)
 endif()
 
 set(SHARED_LIBRARY TRUE)
@@ -493,7 +497,6 @@ add_flang_library(flang_shared
   )
 set_property(TARGET flang_shared PROPERTY OUTPUT_NAME flang)
 
-#
 # Seralize the building of flang_shared and flang_static to eliminate
 # conflicts with the same module files from the shared and static builds
 # being created/recreated in the common directory
@@ -503,7 +506,7 @@ set_property(TARGET flang_shared PROPERTY OUTPUT_NAME flang)
 #
 add_dependencies(flang_shared flang_static)
 
-target_link_libraries(flang_shared ${CMAKE_BINARY_DIR}/${CMAKE_CFG_INTDIR}/lib/libflangrti.so)
+target_link_libraries(flang_shared flangrti_shared)
 # Resolve symbols against libm and librt
 if (NOT MSVC)
   target_link_libraries(flang_shared m rt)
@@ -620,6 +623,11 @@ if(NOT ${CMAKE_GENERATOR} STREQUAL "Ninja")
     OBJECT_DEPENDS ${CMAKE_Fortran_MODULE_DIRECTORY}/ieee_arithmetic_la.mod
     OBJECT_DEPENDS ${CMAKE_Fortran_MODULE_DIRECTORY}/ieee_exceptions_la.mod
   )
+else ()
+  set_target_properties(flang_static
+    PROPERTIES
+    Fortran_MODULE_DIRECTORY ${CMAKE_BINARY_DIR}/include-static
+  )
 endif()
 
 set_target_properties(flang_static flang_shared

runtime/flangrti/CMakeLists.txt

@@ -1,3 +1,4 @@
+
 #
 # Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
 # See https://llvm.org/LICENSE.txt for license information.
@@ -75,28 +76,31 @@ add_flang_library(flangrti_shared
   )
 
 # Resolve symbols against libm
-target_link_libraries(flangrti_shared m)
+if (NOT MSVC)
+  target_link_libraries(flangrti_shared PRIVATE m)
+endif()
+
 
 # Resolve symbols against libpthread
 find_package(Threads REQUIRED)
 if (CMAKE_THREAD_LIBS_INIT)
-  target_link_libraries(flangrti_shared "${CMAKE_THREAD_LIBS_INIT}")
+  target_link_libraries(flangrti_shared PRIVATE "${CMAKE_THREAD_LIBS_INIT}")
 endif()
 
 # Import OpenMP
 if (NOT DEFINED LIBOMP_EXPORT_DIR)
   find_library(
     FLANG_LIBOMP
-    libomp.so
+    NAMES omp libomp
     HINTS ${CMAKE_BINARY_DIR}/lib)
-  target_link_libraries(flangrti_shared ${FLANG_LIBOMP})
+  target_link_libraries(flangrti_shared PRIVATE ${FLANG_LIBOMP})
 endif()
 
 find_library(
   LIBPGMATH
-  libpgmath.so
+  NAMES pgmath libpgmath
   HINTS ${CMAKE_BINARY_DIR}/lib)
-target_link_libraries(flangrti_shared ${LIBPGMATH})
+target_link_libraries(flangrti_shared PRIVATE ${LIBPGMATH})
 
 if( ${TARGET_ARCHITECTURE} STREQUAL "aarch64" )
   target_compile_definitions(flangrti_static PRIVATE TARGET_LINUX_ARM)

tools/flang1/flang1exe/CMakeLists.txt

@@ -155,10 +155,13 @@ target_compile_options(flang1
 target_link_libraries(flang1
   PRIVATE
   flangArgParser
-  ${FLANG_LIB_DIR}/scutil.a
-  -lm
+  scutil
   )
 
+if (NOT MSVC)
+  target_link_libraries(flang1 PRIVATE m)
+endif()
+
 # Install flang1 executable
 install(TARGETS flang1
   RUNTIME DESTINATION bin)

tools/flang1/utils/symtab/CMakeLists.txt

@@ -13,7 +13,7 @@ add_custom_command(
          ${UTILS_SYMTAB_BIN_DIR}/symtabdf.c
          ${UTILS_SYMTAB_BIN_DIR}/symnames.h
          ${FLANG1_DOC_BIN_DIR}/symtab.rst
-  COMMAND ${CMAKE_BINARY_DIR}/bin/fesymutil ${CMAKE_CURRENT_SOURCE_DIR}/symtab.n
+  COMMAND fesymutil ${CMAKE_CURRENT_SOURCE_DIR}/symtab.n
                                             ${CMAKE_CURRENT_SOURCE_DIR}/symtab.in.h
                                       -o -n ${UTILS_SYMTAB_BIN_DIR}/symtab.out.n
                                             ${UTILS_SYMTAB_BIN_DIR}/symtab.h
@@ -43,7 +43,7 @@ add_custom_command(
          ${UTILS_SYMTAB_BIN_DIR}/astdf.d
          ${UTILS_SYMTAB_BIN_DIR}/ilmtp.h
          ${FLANG1_DOC_BIN_DIR}/symini.rst
-  COMMAND ${CMAKE_BINARY_DIR}/bin/fesymini ${UTILS_SYMTAB_DIR}/symini_ftn.n
+  COMMAND fesymini ${UTILS_SYMTAB_DIR}/symini_ftn.n
                                         -o ${UTILS_SYMTAB_BIN_DIR}/syminidf.h
                                            ${UTILS_SYMTAB_BIN_DIR}/pd.h
                                            ${UTILS_SYMTAB_BIN_DIR}/ast.d

tools/flang2/CMakeLists.txt

@@ -23,11 +23,8 @@ set(FLANG2_INCLUDE_DIR    ${CMAKE_CURRENT_BINARY_DIR}/include)
 
 include_directories(${FLANG2_INCLUDE_DIR})
 
-if( ${TARGET_OS} STREQUAL "Linux" )
-  if( ${TARGET_ARCHITECTURE} STREQUAL "x86_64" )
-    set(X86_64 ON)
-    set(LINUX86 ON)
-  endif()
+if( ${TARGET_ARCHITECTURE} STREQUAL "x86_64" )
+  set(X86_64 ON)
 endif()
 
 option(FLANG_OPENMP_GPU_NVIDIA "Enable OpenMP Accelerator Offload." OFF)

tools/flang2/flang2exe/CMakeLists.txt

@@ -143,6 +143,10 @@ target_link_libraries(flang2
   scutil
   )
 
+if (NOT MSVC)
+  target_link_libraries(flang2 PRIVATE m)
+endif()
+
 add_dependencies(flang2
   gen_backend_error_headers # Error message headers
   gen_backend_symtab        # Symbol table headers

tools/flang2/include/platform.h.in

@@ -15,7 +15,6 @@
  *  - true for all arch/arch
  */
 #define BIGOBJ 1
-#cmakedefine LINUX86 1
 #define LONG_IS_64 1
 #define NOLZ 1
 #cmakedefine X86_64 1

tools/flang2/utils/upper/CMakeLists.txt

@@ -4,18 +4,26 @@
 # SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
 #
 
-set(ENV{LC_ALL} "C")
-
 add_executable(upperl
   upperl.c
   )
 
 # Generate upper tables
+file(STRINGS "${UTILS_UPPER_DIR}/upperilm.in" UPPERILM_H_CONTENTS)
+list(SORT UPPERILM_H_CONTENTS)
+set(UPPERILM_H_CONTENTS_SORTED "")
+foreach(Line ${UPPERILM_H_CONTENTS})
+  # Don't modify the line if it contains #local at the end.
+  string(SUBSTRING "${Line}" 0 1 FIRST_CHAR)
+  if(NOT "${FIRST_CHAR}" STREQUAL "#")
+    set(UPPERILM_H_CONTENTS_SORTED "${UPPERILM_H_CONTENTS_SORTED}${Line}\n")
+  endif()
+endforeach()
+file(WRITE ${UTILS_UPPER_BIN_DIR}/upperilm.sort "${UPPERILM_H_CONTENTS_SORTED}")
 
 add_custom_command( 
   OUTPUT ${UTILS_UPPER_BIN_DIR}/upperilm.h
-  COMMAND LC_ALL=C sort ${UTILS_UPPER_DIR}/upperilm.in | grep -v "^ *\#" > ${UTILS_UPPER_BIN_DIR}/upperilm.sort
-  COMMAND ${CMAKE_BINARY_DIR}/bin/upperl ${UTILS_UPPER_BIN_DIR}/upperilm.sort ${UTILS_UPPER_BIN_DIR}/upperilm.h
+  COMMAND upperl ${UTILS_UPPER_BIN_DIR}/upperilm.sort ${UTILS_UPPER_BIN_DIR}/upperilm.h
   DEPENDS upperl ${UTILS_UPPER_DIR}/upperilm.in
   )