cmake: control scope

cmake/compilers.cmake

@@ -1,12 +1,15 @@
 include(CheckSourceCompiles)
 
+function(check_abi)
+
+if(CMAKE_VERSION VERSION_GREATER_EQUAL 3.25)
 # check C and Fortran compiler ABI compatibility
 
 if(NOT abi_ok)
   message(CHECK_START "checking that C, C++, and Fortran compilers can link")
   try_compile(abi_ok
-  ${CMAKE_CURRENT_BINARY_DIR}/abi_check ${CMAKE_CURRENT_LIST_DIR}/abi_check
-  abi_check
+    PROJECT abi_check
+    SOURCE_DIR ${CMAKE_CURRENT_LIST_DIR}/abi_check
   )
   if(abi_ok)
     message(CHECK_PASS "OK")
@@ -20,14 +23,21 @@ if(NOT abi_ok)
   endif()
 endif()
 
+endif()
+
+set(CMAKE_TRY_COMPILE_TARGET_TYPE "EXECUTABLE")
 
 check_source_compiles(Fortran
-"program int
+"program test
 intrinsic :: random_init
 end program"
 HAVE_RANDOM_INIT
 )
 
+endfunction(check_abi)
+
+check_abi()
+
 # always do compiler options after all FindXXX and checks
 
 if(CMAKE_Fortran_COMPILER_ID MATCHES "^Intel")

cmake/curses.cmake

@@ -30,6 +30,9 @@ else()
   FetchContent_MakeAvailable(CURSES)
 endif()
 
+
+function(check_getch)
+
 # always true
 # check_include_file("${curses_SOURCE_DIR}/curses.h" HAVE_CURSES_H)
 # always true
@@ -39,6 +42,9 @@ endif()
 # Rather than hard-code this fact, test dynamically (maybe PDCurses will implement this differently in the future).
 set(CMAKE_REQUIRED_LIBRARIES ${CURSES_LIBRARIES})
 set(CMAKE_REQUIRED_INCLUDES ${CURSES_INCLUDE_DIRS})
+
+set(CMAKE_TRY_COMPILE_TARGET_TYPE "EXECUTABLE")
+
 check_source_compiles(Fortran
 "program test
 use, intrinsic :: iso_c_binding, only : C_INT
@@ -58,3 +64,7 @@ end program
 "
 HAVE_Fortran_GETCH
 )
+
+endfunction(check_getch)
+
+check_getch()