# Workaround LTO related issue when stripping the target files
# See related issue for cross-gcc: #1863378
%global __brp_strip_lto %{nil}

Name:           fpcross
Version:        3.2.2
Release:        3%{?dist}
Summary:        Free Pascal Compiler

License:        GPLv2+ and LGPLv2+ with exceptions
URL:            http://www.freepascal.org/
Source0:        ftp://ftp.freepascal.org/pub/fpc/dist/%{version}/source/fpcbuild-%{version}.tar.gz

# On Fedora we do not want stabs debug-information. (even on 32 bit platforms)
# https://bugzilla.redhat.com/show_bug.cgi?id=1475223 
Patch0:         fpc-3.2.0--dwarf-debug.patch

# Allow for reproducible builds
# https://bugzilla.redhat.com/show_bug.cgi?id=1778875
Patch1:         fpc-3.2.0--honor_SOURCE_DATE_EPOCH_in_date.patch

# Upstream assumes /usr/lib/ for aarch64, but Fedora uses /usr/lib64/
Patch2:         fpc-3.2.0--fix-lib-paths-on-aarch64.patch

# Update for new glibc >= 2.34
#     RHBZ bug: https://bugzilla.redhat.com/show_bug.cgi?id=2005910
# Upstream bug: https://gitlab.com/freepascal.org/fpc/source/-/issues/39295
Patch3:         fpc-3.2.2--glibc-2.34.patch

# Fix missing TOC loads on ppc64le. A backport of upstream commits:
# - https://gitlab.com/freepascal.org/fpc/source/-/commit/12f48c230bccd49f368be1e5a2855cb6c3a60c0f
# - https://gitlab.com/freepascal.org/fpc/source/-/commit/9314bbbf080418827eef94a8bc392ce0497bf72b
# - https://gitlab.com/freepascal.org/fpc/source/-/commit/2de72c854115908271912cd9b260a607c826eadb
# - https://gitlab.com/freepascal.org/fpc/source/-/commit/83c18df69a79fe1035a0cf0bc0897c60d1af0293
# - https://gitlab.com/freepascal.org/fpc/source/-/commit/68b5ca633ca71a83c29b78cd3669bf15477cd94f
# Some modifications were made to make the changes apply cleanly to v3.2.2.
# Upstream bug report: https://gitlab.com/freepascal.org/fpc/source/-/issues/39542
Patch4:         fpc-3.2.2--ppc64le-toc-fixes.patch

# The "pas2jni" util program shipped with FPC uses threads,
# but is compiled without thread support and fails to actually do anything useful when run.
# Submitted upstream: https://gitlab.com/freepascal.org/fpc/source/-/merge_requests/185
Patch5:         fpc-3.2.2--pas2jni-cthreads.patch

# Macros for enabling/disabling support for particular architectures

%ifnarch %{arm}
%global build_arm     1
%else
%global build_arm     0
%endif

%ifnarch aarch64
%global build_aarch64 1
%else
%global build_aarch64 0
%endif

%ifnarch ppc64le
%global build_ppc64le 1
%else
%global build_ppc64le 0
%endif

%ifnarch x86_64
%global build_x86_64  1
%else
%global build_x86_64  0
%endif

# FPC requires support for 80-bit floats ("long double" in C) for cross-compilation to i386.
# Out of our supported architectures - arm, aarch64, ppc64le, x86_64 - only x86_64 supports this.
%ifarch x86_64
%global build_i386    1
%else
%global build_i386    0
%endif

# Units for MS Windows
%ifnarch %{ix86}
%global build_win32   %{build_i386}
%else
%global build_win32   1
%endif

%ifnarch x86_64
%global build_win64   %{build_x86_64}
%else
%global build_win64   1
%endif

BuildRequires:  fpc%{?_isa} = %{version}
BuildRequires:  glibc-devel
BuildRequires:  make

%if %{build_arm}
BuildRequires:  binutils-arm-linux-gnu
%endif
%if %{build_aarch64}
BuildRequires:  binutils-aarch64-linux-gnu
%endif
%if %{build_ppc64le}
BuildRequires:  binutils-powerpc64le-linux-gnu
%endif
%if %{build_i386}%{build_x86_64}
BuildRequires:  binutils-x86_64-linux-gnu
%endif

ExclusiveArch:  %{arm} aarch64 %{ix86} x86_64 ppc64le

%description
Free Pascal is a free 32/64bit Pascal Compiler. It comes with a run-time
library and is fully compatible with Turbo Pascal 7.0 and nearly Delphi
compatible. Some extensions are added to the language, like function
overloading and generics. Shared libraries can be linked. This package
contains the command-line compiler and utilities. Provided units are the
runtime library (RTL), free component library (FCL) and packages.


# -- i386

%if %{build_i386}
%package i386
Summary: Free Pascal Compiler - i386 cross-compilation support
Requires: fpc%{?_isa} = %{version}
%ifnarch %{ix86}
Requires: binutils-x86_64-linux-gnu
%endif

%description i386
This package contains the files required for FPC to compile code 
for the i386 processor architecture.
%endif

%if %{build_win32}
%package win32
Summary: Free Pascal Compiler - win32 cross-compilation support
%ifnarch %{ix86}
Requires: %{name}-i386%{?isa} = %{version}-%{release}
%else
Requires: fpc%{?isa} = %{version}
%endif

%description win32
This package contains the files required for FPC to compile code 
for the Microsoft Windows operating system (32-bit version).
%endif

# -- x86_64

%if %{build_x86_64}
%package x86_64
Summary: Free Pascal Compiler - x86_64 cross-compilation support
Requires: fpc%{?_isa} = %{version}
%ifnarch x86_64
Requires: binutils-x86_64-linux-gnu
%endif

%description x86_64
This package contains the files required for FPC to compile code
for the x86_64 processor architecture.
%endif

%if %{build_win64}
%package win64
Summary: Free Pascal Compiler - win64 cross-compilation support
%ifnarch x86_64
Requires: %{name}-x86_64%{?isa} = %{version}-%{release}
%else
Requires: fpc%{?isa} = %{version}
%endif

%description win64
This package contains the files required for FPC to compile code
for the Microsoft Windows operating system (64-bit version).
%endif

# -- arm

%if %{build_arm}
%package arm
Summary: Free Pascal Compiler - arm cross-compilation support
Requires: fpc%{?_isa} = %{version}
%ifnarch %{arm}
Requires: binutils-arm-linux-gnu
%endif

%description arm
This package contains the files required for FPC to compile code 
for the ARM processor architecture.
%endif

# -- aarch64

%if %{build_aarch64}
%package aarch64
Summary: Free Pascal Compiler - aarch64 cross-compilation support
Requires: fpc%{?_isa} = %{version}
%ifnarch aarch64
Requires: binutils-aarch64-linux-gnu
%endif

%description aarch64
This package contains the files required for FPC to compile code
for the aarch64 (ARM 64-bit) processor architecture.
%endif

# -- ppc64le

%if %{build_ppc64le}
%package ppc64le
Summary: Free Pascal Compiler - ppc64le cross-compilation support
Requires: fpc%{?_isa} = %{version}
%ifnarch ppc64le
Requires: binutils-powerpc64le-linux-gnu
%endif

%description ppc64le
This package contains the files required for FPC to compile code
for the PowerPC 64-bit Little Endian processor architecture.
%endif

# -- targets end


%global smart _smart
%global fpcopt -g -gl -gw -k"--build-id"


%global targets %{expand:
	%if %{build_arm}
	arm-compiler
	arm-linux
	%endif
	%if %{build_aarch64}
	aarch64-compiler
	aarch64-linux
	%endif
	%if %{build_ppc64le}
	ppc64le-compiler
	ppc64le-linux
	%endif
	%if %{build_i386}
	i386-compiler
	i386-linux
	%endif
	%if %{build_win32}
	i386-win32
	%endif
	%if %{build_x86_64}
	x86_64-compiler
	x86_64-linux
	%endif
	%if %{build_win64}
	x86_64-win64
	%endif
}


%prep
%setup -n fpcbuild-%{version} -q

pushd fpcsrc
%patch0
%patch1
%patch2
%patch3 -p1
%patch4 -p2
%patch5 -p1
popd

mkdir __vars/

cat > __vars/arm.sh << EOF
CROSS_ARCH="arm"
CROSS_BUPX="arm-linux-gnu-"
CROSS_NAME="ppcrossarm"
CROSS_OPTS='%{fpcopt} -dCROSS_ARMHF'
EOF

cat > __vars/aarch64.sh << EOF
CROSS_ARCH="aarch64"
CROSS_BUPX="aarch64-linux-gnu-"
CROSS_NAME="ppcrossa64"
CROSS_OPTS='%{fpcopt}'
EOF

cat > __vars/ppc64le.sh << EOF
CROSS_ARCH="powerpc64"
CROSS_BUPX="powerpc64le-linux-gnu-"
CROSS_NAME="ppcrossppc64"
CROSS_OPTS='%{fpcopt} -Cb- -Caelfv2'
EOF

cat > __vars/x86_64.sh << EOF
CROSS_ARCH="x86_64"
CROSS_BUPX="x86_64-linux-gnu-"
CROSS_NAME="ppcrossx64"
CROSS_OPTS='%{fpcopt}'
EOF

cat > __vars/i386.sh << EOF
CROSS_ARCH="i386"
CROSS_BUPX="x86_64-linux-gnu-" # Not a mistake, we want x86_64 bintuils here
CROSS_NAME="ppcross386"
CROSS_OPTS='%{fpcopt}'
EOF


%build
FPC_ARCH="$(fpc -iSP)"

TARGETS=(%{targets})
for TARGET in ${TARGETS[@]}; do
	TARGET_ARCH="${TARGET%%-*}"
	TARGET_OS="${TARGET##*-}"
	source "__vars/${TARGET_ARCH}.sh"

	pushd fpcsrc
	if [[ "${TARGET_OS}" == "compiler" ]]; then
		make %{?_smp_mflags} compiler_cycle OPT="%{fpcopt}" CPU_TARGET="${CROSS_ARCH}" CROSSOPT="${CROSS_OPTS}" BINUTILSPREFIX="${CROSS_BUPX}"
	else
		if [[ "${CROSS_ARCH}" != "${FPC_ARCH}" ]]; then
			PPCROSS="$(pwd)/compiler/${CROSS_NAME}"
			make %{?_smp_flags} \
				rtl_clean rtl%{smart} packages%{smart} \
				FPC="${PPCROSS}" \
				CPU_TARGET="${CROSS_ARCH}" \
				CROSSOPT="${CROSS_OPTS}" \
				BINUTILSPREFIX="${CROSS_BUPX}" \
				OS_TARGET="${TARGET_OS}"
		else
			make %{?_smp_flags} \
				rtl_clean rtl%{smart} packages%{smart} \
				OPT="%{fpcopt}" \
				OS_TARGET="${TARGET_OS}"

		fi
	fi
	popd
done


%install
FPC_ARCH="$(fpc -iSP)"

TARGETS=(%{targets})
for TARGET in ${TARGETS[@]}; do
	TARGET_ARCH="${TARGET%%-*}"
	TARGET_OS="${TARGET##*-}"
	source "__vars/${TARGET_ARCH}.sh"

	if [[ "${TARGET_OS}" == "compiler" ]]; then
		MAKE_TARGETS="compiler_distinstall"
		INSTALL_FPC="FPC=$(pwd)/fpcsrc/compiler/${CROSS_NAME}"
		INSTALL_OS_TARGET=""
	else
		MAKE_TARGETS="rtl_distinstall packages_distinstall"
		INSTALL_FPC=""
		INSTALL_OS_TARGET="OS_TARGET=${TARGET_OS}"
	fi

	if [[ "${CROSS_ARCH}" != "${FPC_ARCH}" ]]; then
		INSTALL_BINUTILSPREFIX="BINUTILSPREFIX=${CROSS_BUPX}"
		INSTALL_CROSSINSTALL="CROSSINSTALL=1"
	else
		INSTALL_BINUTILSPREFIX=""
		INSTALL_CROSSINSTALL=""
	fi

	pushd fpcsrc
	make ${MAKE_TARGETS} \
		${INSTALL_FPC} \
		${INSTALL_OS_TARGET} \
		${INSTALL_BINUTILSPREFIX} \
		${INSTALL_CROSSINSTALL} \
		INSTALL_PREFIX="%{buildroot}%{_prefix}" \
		INSTALL_LIBDIR="%{buildroot}%{_libdir}" \
		INSTALL_BASEDIR="%{buildroot}%{_libdir}/fpc/%{version}" \
		INSTALL_BINDIR="%{buildroot}%{_bindir}" \
		INSTALL_DOCDIR="%{buildroot}%{_defaultdocdir}/%{name}" \
		INSTALL_EXAMPLEDIR="%{buildroot}%{_defaultdocdir}/%{name}/examples" \
		CPU_TARGET="${CROSS_ARCH}"
	popd

	if [[ "${TARGET_OS}" == "compiler" ]]; then
		# Symlink the executable
		mkdir -p %{buildroot}%{_bindir}
		ln -sf "../%{_lib}/fpc/%{version}/${CROSS_NAME}" "%{buildroot}%{_bindir}/${CROSS_NAME}"
	fi
done

# We don't want to install the documentation, but calling "make compiler_distinstall"
# does that for us, anyway. Remove any installed documentation files.
# The user should install "fpc-doc" instead.
rm -rf %{buildroot}%{_defaultdocdir}

# No idea what these files are for, but if they're actually needed for anything,
# the're also shipped by the base "fpc" package, so it's safe to drop them here.
rm %{buildroot}%{_bindir}/*.ans %{buildroot}%{_bindir}/*.pt %{buildroot}%{_bindir}/*.tdf

# When installing Windows units, the Makefile also forces an .ico icon on us.
rm %{buildroot}%{_bindir}/fp32.ico || true


%files

# -- i386

%if %{build_i386}
%files i386
%{_bindir}/ppcross386
%{_libdir}/fpc/%{version}/ppcross386
%{_libdir}/fpc/%{version}/fpmkinst/i386-linux
%{_libdir}/fpc/%{version}/units/i386-linux
%endif

# -- win32

%if %{build_win32}
%files win32
%{_libdir}/fpc/%{version}/fpmkinst/i386-win32
%{_libdir}/fpc/%{version}/units/i386-win32
%endif

# -- x86_64

%if %{build_x86_64}
%files x86_64
%{_bindir}/ppcrossx64
%{_libdir}/fpc/%{version}/ppcrossx64
%{_libdir}/fpc/%{version}/fpmkinst/x86_64-linux
%{_libdir}/fpc/%{version}/units/x86_64-linux
%endif

%if %{build_win64}
%files win64
%{_libdir}/fpc/%{version}/fpmkinst/x86_64-win64
%{_libdir}/fpc/%{version}/units/x86_64-win64
%endif

# -- arm

%if %{build_arm}
%files arm
%{_bindir}/ppcrossarm
%{_libdir}/fpc/%{version}/ppcrossarm
%{_libdir}/fpc/%{version}/fpmkinst/arm-linux
%{_libdir}/fpc/%{version}/units/arm-linux
%endif

# -- aarch64

%if %{build_aarch64}
%files aarch64
%{_bindir}/ppcrossa64
%{_libdir}/fpc/%{version}/ppcrossa64
%{_libdir}/fpc/%{version}/fpmkinst/aarch64-linux
%{_libdir}/fpc/%{version}/units/aarch64-linux
%endif

# -- ppc64le

%if %{build_ppc64le}
%files ppc64le
%{_bindir}/ppcrossppc64
%{_libdir}/fpc/%{version}/ppcrossppc64
%{_libdir}/fpc/%{version}/fpmkinst/powerpc64-linux
%{_libdir}/fpc/%{version}/units/powerpc64-linux
%endif


%changelog
* Tue Dec 13 2022 Artur Frenszek-Iwicki <fedora@svgames.pl> - 3.2.2-2
- Add building MS Windows units

* Mon Dec 12 2022 Artur Frenszek-Iwicki <fedora@svgames.pl> - 3.2.2-1
- Initial packaging (based on fpc.spec)