In over 40 years no one has ever been able to turn Erica Jong’s classic 1973 bestselling novel of sexual liberation, “Fear of Flying,” into a movie.

Many have tried. My late friend producer Julia Phillips wanted to direct the book with Goldie Hawn playing the heroine, Isadora Wing, who travels all over the world looking for “the zipless f—.” Julia wrote the entire hilarious saga of not making that movie in her bestseller, “You’ll Never Eat Lunch in this Town Again.” After what seemed like decades of a tug of war with everyone in Hollywood, including a lawsuit with Erica Jong, Julia finally surrendered. The movie was never made.

Three years ago there was some kind of announcement that producer Donald Kushner had director Laurie Collyer and they were going to do it. Again, it never materialized.

But now I can tell you that “Fear of Flying” will fly at Columbia Pictures, where Julia set it up with Ray Stark and David Begelman in 1973. Alas, Collyer is gone. In her place is Tanya Wexler, whose 2011 movie about the invention of the vibrator, called “Hysteria,” was an indie hit. Kushner is still the producer. No stars’ name has been mentioned so far, but I think Hawn’s daughter, Kate Hudson, would be perfect. And wouldn’t that be poetic justice? Wexler might opt for Maggie Gyllenhaal, who starred in “Hysteria.”

Jong is working with Wexler and screenwriters Piers Ashworth and Shauna Cross to get the right screenplay. But I do hear that Jong, who last fall published a sequel called “Fear of Dying,” is struggling with them “to get the right tone. Isadora’s tale has been updated from the 70s to current times.

The four day weekend was brutal at the box office. “The Legend of Tarzan” managed to swing from one branch to another without falling into the jungle. The result was $45 million, which isn’t bad but isn’t great either. It just is.

“The BFG” came out at $22 million for four days, which is bad and I feel bad about it. I’ve been getting interesting comments about the title from Twitter followers. No one knew what the initials meant. So the Roald Dahl book wasn’t a big enough lure. There was a major marketing miscommunication here.

“Independence Day: Resurgence” plodded to $76.3 million by Monday night. They have $177 million in foreign sales. Maybe they’re up to around $240 million total. Half of that goes to theaters. So “IDR” remains a P&L misery.

Any success “Tarzan” had is due to Sue Kroll, who’s a marketing genius at Warner Bros. Her real coup for the summer is “Central Intelligence,” which is near $100 million US and $30 mil abroad. It cost about $50 million. A new franchise is born for The Rock and Kevin Hart, who can definitely get two more out of this before “CI” becomes a TV series.

Meanwhile, whatever happened to “Genius” with Colin Firth, Jude Law and Nicole Kidman? Well, it’s made about a million dollars over four weeks. I guess the three stars divide that up. “Genius” had to have cost $10 million, but who knows? They should put it on VOD or Netflix.

So what happens next? This Friday we get “The Secret Life of Pets,” which even I want to see. That’s a hit. “Mike and Dave Need Wedding Dates” actually looks funny. But the very good movie coming on Friday is “Captain Fantastic.” Not to be missed.

July 15th we get Woody Allen’s excellent “Cafe Society,” Bryan Cranston in “The Infiltrator” (already getting good buzz), and the all female “Ghostbusters,” which I’m crossing my fingers for because I like everyone in it.

You’d have to go back a long way in the Steven Spielberg canon to find a worse marketed, lousy opening for one of his films as “The BFG” has just had. It just shows you, you can be the most famous director in the world and it still doesn’t matter if the studio isn’t behind you.

On Friday “The BFG” made $7 million. Movie trackers were spot on predicting a $21 million weekend (three days), with $24 mi by end of July 4th. “The BFG” cost $140 million.

This was the fourth film in a row that Spielberg has released through Disney/Buena Vista. War Horse, Lincoln, Bridge of Spies preceded it. Of those three, only “Lincoln” was a bona fide hit although “Bridge of Spies,” at least was Oscar nominated and Mark Rylance won the Academy Award for Best Supporting Actor.

Everything about “The BFG” pointed to success. The Roald Dahl book is beloved. Spielberg brought the movie to Cannes, where it had a very positive launch. But post-Cannes, “The BFG” was MIA. It all but disappeared. Even a 72 on Rotten Tomatoes wasn’t enough to compel Disney to really market the film. A couple of days ago, my dry cleaner asked me about the upcoming weekend movies. He hadn’t even heard of “The BFG.” That says a lot.

It’s too bad. I wrote from Cannes that I thought Spielberg had captured the energy and essence of “ET.” I still feel that way and will pay to see it again (we had no screening in NY). Maybe word of mouth will push it along. But it could be that Disney has become so used to touting Marvel and animation and sequels, what was needed for “The BFG” just didn’t happen.

Hollywood is not having a great summer. It’s certainly not the Blockbuster summer everyone hopes for. It looks more like a Summer Bomb Buster.

First, Fox went off track with both “X Men: Apocalypse” and now “Independence Day: Resurgence.” Neither of them came close to making the kind of money their predecessors had. If it weren’t for China not caring what the movies are about, the finances would be out the window. As it is, with “IDR,” even China may not really save it.

Now comes the $200 million “Legend of Tarzan.” It’s got a 25 critics score. Social media reviews are very negative. Warner Bros. has shielded “Tarzan” from New York press. But I fear the worst is coming. One tracking site is predicting a $21 million four day weekend. Can China save it? Do the Chinese even know about Tarzan?

Warner’s has two potential hits coming– “Suicide Squad” and “Fantastic Beasts.” So those will help.

Then there’s Steven Spielberg’s “The BFG.” I raved about this movie in Cannes. I loved it. I’ve never heard a word from Disney or Lucas Films about even a screening in New York. Nada. That is a bad sign that the studio has no faith in the film. Spielberg didn’t come to New York. Mark Rylance? Who knows?

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Last night they had a low cost low profile screening at Village East Cinemas. That ain’t the Ziegfeld. (It’s not even the AMC Lincoln Square. Village East, in the East Village, is used for low low budget indies.) Seems to me “The BFG” had huge potential. But again, tracking sites say $19 million for four day weekend. Is that even possible?

For Disney it doesn’t matter. They already have billions this year from Zootopia, Captain America, etc. They’re the box office leader. But Spielberg might be a little upset.

Stay tuned. July 4th weekend may not be filled with many fireworks.