configure-gccemacs.sh

#!/bin/bash

# Original from http://xenodium.com/trying-out-gccemacs-on-macos/index.html

set -o nounset
set -o errexit

# Configures Emacs for building native comp support
# http://akrl.sdf.org/gccemacs.html

# Installing under homebrew's opt, but could be anywhere.
readonly GCCEMACS_PREFIX="$(realpath $(brew --prefix)/opt/gccemacs)"

# Changed from
# readonly GCC_DIR="$(realpath $(brew --prefix)/opt/gcc)"
readonly GCC_DIR="$(realpath $(brew --prefix)/opt/libgccjit)"
[[ -d $GCC_DIR ]] ||  { echo "${GCC_DIR} not found"; exit 1; }

readonly SED_DIR="$(realpath $(brew --prefix)/opt/gnu-sed)"
[[ -d $SED_DIR ]] ||  { echo "${SED_DIR} not found"; exit 1; }

readonly GCC_INCLUDE_DIR=${GCC_DIR}/include
[[ -d $GCC_INCLUDE_DIR ]] ||  { echo "${GCC_INCLUDE_DIR} not found"; exit 1; }

readonly GCC_LIB_DIR=${GCC_DIR}/lib/gcc/10
[[ -d $GCC_LIB_DIR ]] ||  { echo "${GCC_LIB_DIR} not found"; exit 1; }

# Added, following @mnewt
# https://github.com/Homebrew/homebrew-core/pull/60338#issuecomment-735275157
readonly GCC_LIBRARY_PATH="$(brew --prefix libgccjit)/lib/gcc/10"
[[ -d $GCC_LIBRARY_PATH ]] ||  { echo "${GCC_LIBRARY_PATH} not found"; exit 1; }

export PATH="${SED_DIR}/libexec/gnubin:${PATH}"
export CFLAGS="-I${GCC_INCLUDE_DIR}"
export LDFLAGS="-L${GCC_LIB_DIR} -I${GCC_INCLUDE_DIR}"
export DYLD_FALLBACK_LIBRARY_PATH="${GCC_LIB_DIR}"
# Added, following @mnewt
# https://github.com/Homebrew/homebrew-core/pull/60338#issuecomment-735275157
export LIBRARY_PATH="${GCC_LIBRARY_PATH}"

echo "Environment"
echo "-----------"
echo PATH: $PATH
echo CFLAGS: $CFLAGS
echo LDFLAGS: $LDFLAGS
echo DYLD_FALLBACK_LIBRARY_PATH: $DYLD_FALLBACK_LIBRARY_PATH
# Added, following @mnewt
# https://github.com/Homebrew/homebrew-core/pull/60338#issuecomment-735275157
echo LIBRARY_PATH: $LIBRARY_PATH
echo "-----------"

./autogen.sh

./configure \
     --prefix="${GCCEMACS_PREFIX}" \
     --enable-locallisppath="${GCCEMACS_PREFIX}/opt/gccemacs/site-lisp" \
     --with-mailutils \
     --with-ns \
     --with-imagemagick \
     --with-cairo \
     --with-modules \
     --with-xml2 \
     --with-gnutls \
     --with-json \
     --with-rsvg \
     --with-nativecomp \
     --disable-silent-rules \
     --disable-ns-self-contained \
     --without-dbus