diff options
Diffstat (limited to 'm4/fp_prog_ghc_pkg.m4')
| -rw-r--r-- | m4/fp_prog_ghc_pkg.m4 | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/m4/fp_prog_ghc_pkg.m4 b/m4/fp_prog_ghc_pkg.m4 new file mode 100644 index 0000000000..72e8c05997 --- /dev/null +++ b/m4/fp_prog_ghc_pkg.m4 @@ -0,0 +1,21 @@ +# FP_PROG_GHC_PKG +# ---------------- +# Try to find a ghc-pkg matching the ghc mentioned in the environment variable +# WithGhc. Sets the output variable GhcPkgCmd. +AC_DEFUN([FP_PROG_GHC_PKG], +[AC_CACHE_CHECK([for ghc-pkg matching $WithGhc], fp_cv_matching_ghc_pkg, +[ +# If we are told to use ghc-stage2, then we're using an in-tree +# compiler. In this case, we just want ghc-pkg, not ghc-pkg-stage2, +# so we sed off -stage[0-9]$. However, if we are told to use +# ghc-6.12.1 then we want to use ghc-pkg-6.12.1, so we keep any +# other suffix. +fp_ghc_pkg_guess=`echo "$WithGhc" | sed -e 's/-stage@<:@0-9@:>@$//' -e 's,ghc\(@<:@^/\\@:>@*\)$,ghc-pkg\1,'` +if "$fp_ghc_pkg_guess" list > /dev/null 2>&1; then + fp_cv_matching_ghc_pkg=$fp_ghc_pkg_guess +else + AC_MSG_ERROR([Cannot find matching ghc-pkg]) +fi]) +GhcPkgCmd=$fp_cv_matching_ghc_pkg +AC_SUBST([GhcPkgCmd]) +])# FP_PROG_GHC_PKG |