CI: another try

.github/workflows/R-CMD-check.yaml

@@ -43,11 +43,11 @@ jobs:
 
       - name: Install fftw3 on macOS
         if: runner.os == 'macOS'
-        run: brew install libomp fftw
+        run: brew install fftw
 
       - name: Install fftw3 on Windows
         if: runner.os == 'Windows'
-        run: pacman -Syu mingw-w64-x86_64-fftw --noconfirm
+        run: pacman -Syu mingw-w64-x86_64-fftw mingw-w64-x86_64-openmp --noconfirm
 
       - uses: r-lib/actions/setup-r-dependencies@v2
         with:

configure.ac

@@ -29,9 +29,9 @@ AC_SEARCH_LIBS(
 
 # Check for omp.h header
 AC_CHECK_HEADER([omp.h], [
-  AC_DEFINE([HAVE_OMP_H], [1], [Define if you have the fftw3.h header file])
+  AC_DEFINE([HAVE_OMP_H], [1], [Define if you have the omp.h header file])
 ], [
-  AC_DEFINE([HAVE_OMP_H], [0], [Define if you have the fftw3.h header file])
+  AC_DEFINE([HAVE_OMP_H], [0], [Define if you have the omp.h header file])
 ])
 
 have_fftw_omp=no

src/Makevars.win

@@ -1,4 +1,4 @@
 CXX_STD = CXX17
-PKG_CPPFLAGS = -I.
+PKG_CPPFLAGS = -I. -I$(LIB_FFTW)/include
 PKG_CXXFLAGS = -I. $(SHLIB_OPENMP_CXXFLAGS)
-PKG_LIBS = $(SHLIB_OPENMP_CXXFLAGS) -lfftw3f -lfftw3f_omp
+PKG_LIBS = -L$(LIB_FFTW)/lib $(SHLIB_OPENMP_CXXFLAGS) -lfftw3f -lfftw3f_omp