Re: ./configure --with-native-compilation on macos (11.5.2 Big Sur)

[Alan Third <alan@idiocy.org>]

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On Tue, Aug 17, 2021 at 09:59:48AM +0900, Jean-Christophe Helary wrote:
> 
> 
> > On Aug 17, 2021, at 2:18, Alan Third <alan@idiocy.org> wrote:
> > 
> > On Sun, Aug 15, 2021 at 03:10:13PM +0900, Jean-Christophe Helary wrote:
> >> On a recently checked out master branch I keep bumping into this error message:
> >> 
> >> checking for gcc_jit_context_acquire in -lgccjit... no
> >> configure: error: ELisp native compiler was requested, but libgccjit was not found.
> >> Please try installing libgccjit or a similar package.
> >> 
> >> even though I have installed, reinstalled and reinstalled from source said libgccjit (with brew).
> >> 
> >> I guess there is something trivial I need to do to fix that, but I can't figure it out.
> > 
> > Can you please run:
> > 
> >    find `brew --prefix --installed libgccjit 2>/dev/null`/ -name \*.so
> > 
> > and let us know what the result is?
> 
> Et voilà:
> 
> /usr/local/opt/libgccjit//lib/gcc/11/libgccjit.so

Unfortunately that's what I was expecting...

Can you try the attached patch and see if it makes any difference?
-- 
Alan Third

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From 1fa158104807fae13040536b0b079d802082268d Mon Sep 17 00:00:00 2001
From: Alan Third <alan@idiocy.org>
Date: Tue, 17 Aug 2021 20:38:55 +0100
Subject: [PATCH] * configure.ac: Make homebrew check for libgccjit match
 macports.

---
 configure.ac | 13 +++++++------
 1 file changed, 7 insertions(+), 6 deletions(-)

diff --git a/configure.ac b/configure.ac
index eff5591543..76f608ffb0 100644
--- a/configure.ac
+++ b/configure.ac
@@ -3822,12 +3822,13 @@ AC_DEFUN
 
     # Ensure libgccjit installed by Homebrew can be found.
     if test -n "$BREW"; then
-      BREW_LIBGCCJIT_PREFIX=`$BREW --prefix --installed libgccjit 2>/dev/null`
-      if test "$BREW_LIBGCCJIT_PREFIX"; then
-        brew_libdir=`find ${BREW_LIBGCCJIT_PREFIX}/ -name \*.so \
-                     | sed -e '1!d;s|/[[^/]]*\.so$||'`
-        CFLAGS="$CFLAGS -I${BREW_LIBGCCJIT_PREFIX}/include"
-        LDFLAGS="$LDFLAGS -L${brew_libdir} -I${BREW_LIBGCCJIT_PREFIX}/include"
+      if test -n "`$BREW --prefix --installed libgccjit 2>/dev/null`"; then
+        BREW_LIBGCCJIT_INCLUDE=$(dirname $($BREW ls -v libgccjit | \
+                                              grep libgccjit.h))
+        BREW_LIBGCCJIT_LIB=$(dirname $($BREW ls -v libgccjit| \
+                                          grep libgccjit.so\$))
+        CFLAGS="$CFLAGS -I${BREW_LIBGCCJIT_INCLUDE}"
+        LDFLAGS="$LDFLAGS -L${BREW_LIBGCCJIT_LIB}"
       fi
     fi
 
-- 
2.32.0