compile_flags.stub

#!/bin/sh

# generate compile_flags.txt for clangd by running this as
#
#   NGX_HOME=/path/to/nginx_sources \
#   NGX_HASKELL_MODULE_HOME=/path/to/nginx_haskell_module_sources \
#   . compile_flags.stub > compile_flags.txt
#

ghc_pkg_program=ghc-pkg

if test -n "$GHC_PKG_PROGRAM"
then
    ghc_pkg_program="$GHC_PKG_PROGRAM"
fi

if ! command -v "$ghc_pkg_program" >/dev/null 2>&1
then
    echo "error: unable to find ghc-pkg program!" >&2
    echo "   Check that GHC is installed "`
        `"or specify environment variable GHC_PKG_PROGRAM" >&2
else
    while :
    do
        if test -z "$NGX_HOME"
        then
            echo "error: environment variable NGX_HOME is not set!" >&2
            break
        fi
        if test -z "$NGX_HASKELL_MODULE_HOME"
        then
            echo "error: environment variable NGX_HASKELL_MODULE_HOME "`
                `"is not set!" >&2
            break
        fi
        echo -I"$NGX_HOME/src/core"
        echo -I"$NGX_HOME/src/http"
        echo -I"$NGX_HOME/src/http/modules"
        echo -I"$NGX_HOME/src/event"
        echo -I"$NGX_HOME/src/event/modules"
        echo -I"$NGX_HOME/src/os/unix"
        echo -I"$NGX_HOME/objs"
        echo -I"$NGX_HASKELL_MODULE_HOME/src"
        echo -I"$($ghc_pkg_program field rts include-dirs --simple-output)" |
                sed 's/,/ -I/g'
        break
    done
fi