Require CMake 3.24, Updates for Windows Support

Removed

• Removed download of m4 on Windows if not found. We now require the user to provide it
• Removed filter.x.in for pure Awk in CMake custom_command

Changed

• Updated CMake minimum version to 3.24
• Made awk and m4 REQUIRED via find_program
• Update CI to use macos-15, remove macos-13
• Add gfortran-15 to macOS CI

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What's Changed

• Gitflow by @tclune in #257
• Make m4 and awk required via find_program by @mathomp4 in #260
• CI: Drop macos-13, add macos-15, add gfortran-15 by @mathomp4 in #262
• Update CMake minimum version to 3.24 by @mathomp4 in #258
• Prepare for 1.16.0 release by @mathomp4 in #263
• GitFlow: Merge develop into main for 1.16 release by @mathomp4 in #264

Full Changelog: v1.15.2...v1.16.0

Eliminate debug prints

Fixed

• removed extraneous debug prints left from last PR

Workaround for gfortran + unlimited polymorphic

Fixed

• workaround for gfortran tests on containers with unlimited polymorphic entities

New variant of Set container (compiler workaround)

Added

• Introduced new container "alt_set". Interfaces are the same as "set" but underlying implementation uses vectors of indices rather than pointers. The hope is that this will result in fewer compiler bugs related to deep copies of structures with self-referential pointers.
• Optional FPP setting USE_ALT_SET to enable map containter to use alt_set instead of set under-the-hood.

Fixed

• missing TARGET in some container interfaces. Spotted during introducition of "alt_set" container.

Added

• Preliminary LLVMFlang support
• Added missing TARGET attribute in map::erase() procedures. When
  used with NAG compiler, would result in temporary objects with
  dangling pointers. Added new test to cover this case.

Changed

• Update CI to have gfortran-10 and gfortran-11 only on ubuntu-22.04
• Update CI NVIDIA to NVHPC 24.7
• Workarounds of IFX issues. (Did not submit reproducers.)
• Add flang test to CI

Added support for non-poly allocatable containers

Fixed

• Change use of spread in include/v2/parameters/define_derived_macros.m4 to reshape to avoid NVHPC issue

Added

• Enabled feature that allows pointers into container objects to remain valid when container grows/shrinks. This ability is already baked into the polymorphic case where MOVE_ALLOC() is used. Now if one uses #define T_deferred gFTL will also use a wrapper type with an allocatable component and MOVE_ALLOC() under the hood.

Changed

• Update CI to remove macos-12, add macos-14 and ubuntu-24.04

IFX port

Fixed

• Implemented workarounds for ifx compiler and v1 interfaces. v2 tests were fine.
  1. Removed previous workaround for older Intel compilers that did not support polymorphic assignment.
  2. Introduced workaround for comparing polymorphic pointers for Set and altSet

Changed

• Removed macos-11 from CI, added macos-13
• Added -quiet flag for NAG compiler
• Removed stray print statements in tests.

Port to Fujitsu (and minor bugfix)

Added

• Fujitsu compiler support

Fixed

• (#211) Fixed bug in implementation of erase(first, last) for vector & deque containers. When the range was empty, then some cases would erronously call MOVE_ALLOC(x,x) which is illegal.

Miscellaneous minor bits

Added

• Introduced new preprocessing options to disable override of assignment(=) in v2 map and set templates. This is to workaround a case where intel compiler is producing erroneous results. Disabling everywhere is too risky.

Changed

• Behavior of at(key) (without rc) now will not extend the map. This change may be reverted if it breaks any downstream projects.
• Remove Ubuntu 20 and gfortran-9 from CI

Fixed

• Add -check nouninit for Intel LLVM to work around ifx bug.

Initial attempt at ifx port

Added

• Added IntelLLVM.cmake file as a copy of Intel.cmake to support the LLVM Intel compiler frontends
  (Note - this has not been tested due to lack of system access.)

---

What's Changed

• Add preliminary Intel LLVM Support by @mathomp4 in #183
• Develop by @tclune in #197

Full Changelog: v1.9.0...v1.10.0

New iterator factory methods to support Fortran looping

Added

• Added Fortran-friendly iterator factories (and tests) to

  ftn_begin() and ftn_end() have been added to vector, set, map,
  and ordered_map templates. ftn_begin() points to just-before the
  1st element of a container, while ftn_end() points to the last
  element. This allows the next() invocation to be at the start of the loop which
  is less error prone in the presence of CYCLE statements. Example usage:

  type(Vector) :: v
  type(VectorIterator) :: iter
  ...
  associate (e => v%ftn_end())
     iter = v%ftn_begin()
     do while (iter /= e)
        call iter%next()
        ...
        if (<cond>) cycle ! does the right thing
        ...
     end do
  end associate