mirror of https://github.com/intel/intel-qs.git
55 lines
1.6 KiB
Plaintext
55 lines
1.6 KiB
Plaintext
dnl /*D
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dnl PAC_F77_WORKS_WITH_CPP
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dnl
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dnl Checks if Fortran 77 compiler works with C preprocessor
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dnl
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dnl Most systems allow the Fortran compiler to process .F and .F90 files
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dnl using the C preprocessor. However, some systems either do not
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dnl allow this or have serious bugs (OSF Fortran compilers have a bug
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dnl that generates an error message from cpp). The following test
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dnl checks to see if .F works, and if not, whether "cpp -P -C" can be used
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dnl D*/
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AC_DEFUN([PAC_F77_WORKS_WITH_CPP],[
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AC_REQUIRE([AC_PROG_CPP])
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AC_MSG_CHECKING([whether Fortran 77 compiler processes .F files with C preprocessor])
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AC_LANG_PUSH([Fortran 77])
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saved_f77_ext=${ac_ext}
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ac_ext="F"
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saved_FFLAGS="$FFLAGS"
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FFLAGS="$FFLAGS $CPPFLAGS"
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AC_LANG_CONFTEST([
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AC_LANG_SOURCE([
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program main
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#define ASIZE 10
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integer a(ASIZE)
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end
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])
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])
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AC_COMPILE_IFELSE([],[
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pac_cv_f77_accepts_F=yes
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ifelse([$1],[],[],[$1=""])
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],[
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pac_cv_f77_accepts_F=no
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ifelse([$1],[],[:],[$1="false"])
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])
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# Restore Fortran 77's ac_ext but not FFLAGS
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ac_ext="$saved_f77_ext"
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if test "$pac_cv_f77_accepts_F" != "yes" ; then
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pac_cpp_f77="$ac_cpp -C -P conftest.F > conftest.$ac_ext"
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PAC_RUNLOG_IFELSE([$pac_cpp_f77],[
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if test -s conftest.${ac_ext} ; then
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AC_COMPILE_IFELSE([],[
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pac_cv_f77_accepts_F="no, use cpp"
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ifelse([$1],[],[],[$1="$CPP -C -P"])
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],[])
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rm -f conftest.${ac_ext}
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fi
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],[])
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fi
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FFLAGS="$saved_FFLAGS"
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rm -f conftest.F
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AC_LANG_POP([Fortran 77])
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AC_MSG_RESULT([$pac_cv_f77_accepts_F])
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])
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