Ports: Add abseil and protobuf

Abseil's Serenity support is a little limited:
- No support for any timezone shenanigans since protobuf hopefully
  doesn't use those. For now, abseil will always believe to be in UTC on
  Serenity.
- In most places where explicit platforms need to be added to a list of
  supported platforms, Serenity will be missing. Again I only added the
  ones that are required for protobuf.

Ports/AvailablePorts.md

@@ -6,6 +6,7 @@ This list is also available at [ports.serenityos.net](https://ports.serenityos.n
 
 | Port                                                | Name                                                            | Version                   | Website                                                                        |
 |-----------------------------------------------------|-----------------------------------------------------------------|---------------------------|--------------------------------------------------------------------------------|
+| [`abseil`](abseil/)                                 | Abseil Common Libraries                                         | 20230802.0                | https://abseil.io/                                                             |
 | [`aclock`](aclock/)                                 | aclock                                                          | 2.3                       | https://github.com/tenox7/aclock                                               |
 | [`acpica-tools`](acpica-tools/)                     | ACPI Component Architecture Project Userspace Utilities         | R06_28_23                 | https://github.com/acpica/acpica                                               |
 | [`alpine`](alpine/)                                 | Alpine Email Client                                             | 2.26                      | https://alpineapp.email                                                        |
@@ -257,6 +258,7 @@ This list is also available at [ports.serenityos.net](https://ports.serenityos.n
 | [`powdertoy`](powdertoy/)                           | The Powder Toy                                                  | 96.2.350                  | https://powdertoy.co.uk/                                                       |
 | [`prboom-plus`](prboom-plus/)                       | PrBoom+                                                         | 2.6.2                     | https://prboom-plus.sourceforge.io/                                            |
 | [`printf`](printf/)                                 | printf (OpenBSD)                                                | 6.6                       | https://github.com/ibara/libpuffy                                              |
+| [`protobuf`](protobuf/)                             | Protocol Buffers                                                | 24.3                      | https://protobuf.dev/                                                          |
 | [`pt2-clone`](pt2-clone/)                           | ProTracker 2 clone                                              | 1.49                      | https://github.com/8bitbubsy/pt2-clone                                         |
 | [`pv`](pv/)                                         | Pipe Viewer                                                     | 1.6.20                    | http://www.ivarch.com/programs/pv.shtml                                        |
 | [`python3`](python3/)                               | Python                                                          | 3.11.5                    | https://www.python.org/                                                        |

Ports/abseil/package.sh

@@ -0,0 +1,25 @@
+#!/usr/bin/env -S bash ../.port_include.sh
+port='abseil'
+useconfigure='true'
+version='20230802.0'
+configopts=(
+    "-DCMAKE_TOOLCHAIN_FILE=${SERENITY_BUILD_DIR}/CMakeToolchain.txt"
+    '-DABSL_PROPAGATE_CXX_STD=ON'
+    '-DABSL_ENABLE_INSTALL=ON'
+    '-DABSL_BUILD_TESTING=OFF'
+)
+files=(
+    "git+https://github.com/abseil/abseil-cpp.git#${version}"
+)
+
+configure() {
+    run cmake . "${configopts[@]}"
+}
+
+build() {
+    run cmake --build .
+}
+
+install() {
+    run cmake --build . --target install
+}

Ports/abseil/patches/0001-Remove-strptime-support-on-Serenity.patch

@@ -0,0 +1,22 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?kleines=20Filmr=C3=B6llchen?= <filmroellchen@serenityos.org>
+Date: Sat, 16 Sep 2023 11:08:54 +0200
+Subject: [PATCH] Remove strptime support on Serenity
+
+---
+ absl/time/internal/cctz/src/time_zone_format.cc | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/absl/time/internal/cctz/src/time_zone_format.cc b/absl/time/internal/cctz/src/time_zone_format.cc
+index 9b91f61cf09530fb3fc08c2a4091f61f86904a5e..d40858bc44c295a27efe4f9aa7da5241e5ba0381 100644
+--- a/absl/time/internal/cctz/src/time_zone_format.cc
++++ b/absl/time/internal/cctz/src/time_zone_format.cc
+@@ -13,7 +13,7 @@
+ //   limitations under the License.
+ 
+ #if !defined(HAS_STRPTIME)
+-#if !defined(_MSC_VER) && !defined(__MINGW32__) && !defined(__VXWORKS__)
++#if !defined(_MSC_VER) && !defined(__MINGW32__) && !defined(__VXWORKS__) && !defined(__serenity__)
+ #define HAS_STRPTIME 1  // Assume everyone else has strptime().
+ #endif
+ #endif

Ports/abseil/patches/0002-Remove-LibC-timezone-support-on-Serenity.patch

@@ -0,0 +1,37 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?kleines=20Filmr=C3=B6llchen?= <filmroellchen@serenityos.org>
+Date: Sat, 16 Sep 2023 11:09:17 +0200
+Subject: [PATCH] Remove LibC timezone support on Serenity
+
+---
+ absl/time/internal/cctz/src/time_zone_libc.cc | 10 ++++++++++
+ 1 file changed, 10 insertions(+)
+
+diff --git a/absl/time/internal/cctz/src/time_zone_libc.cc b/absl/time/internal/cctz/src/time_zone_libc.cc
+index d01461222e9e60461384733162d1e042aa51147b..8ac1db60e61610bfbc2adc9c2f4658affd65712b 100644
+--- a/absl/time/internal/cctz/src/time_zone_libc.cc
++++ b/absl/time/internal/cctz/src/time_zone_libc.cc
+@@ -91,6 +91,11 @@ auto tm_gmtoff(const std::tm& tm) -> decltype(tm.tm_gmtoff) {
+ auto tm_gmtoff(const std::tm& tm) -> decltype(tm.__tm_gmtoff) {
+   return tm.__tm_gmtoff;
+ }
++#elif defined(__serenity__)
++template <typename T>
++auto tm_gmtoff(const T&) -> int {
++  return 0;
++}
+ #else
+ template <typename T>
+ auto tm_gmtoff(const T& tm) -> decltype(tm.tm_gmtoff) {
+@@ -107,6 +112,11 @@ auto tm_zone(const std::tm& tm) -> decltype(tm.tm_zone) { return tm.tm_zone; }
+ auto tm_zone(const std::tm& tm) -> decltype(tm.__tm_zone) {
+   return tm.__tm_zone;
+ }
++#elif defined(__serenity__)
++template <typename T>
++auto tm_zone(const T&) -> char const* {
++  return "UTC";
++}
+ #else
+ template <typename T>
+ auto tm_zone(const T& tm) -> decltype(tm.tm_zone) {

Ports/abseil/patches/0003-Only-check-error-codes-on-platforms-where-they-exist.patch

@@ -0,0 +1,56 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?kleines=20Filmr=C3=B6llchen?= <filmroellchen@serenityos.org>
+Date: Sat, 16 Sep 2023 11:09:57 +0200
+Subject: [PATCH] Only check error codes on platforms where they exist
+
+---
+ absl/status/status.cc | 10 ++++++++++
+ 1 file changed, 10 insertions(+)
+
+diff --git a/absl/status/status.cc b/absl/status/status.cc
+index 26e68294acf7dca9f112987972dc48016c381f4f..68277d5967b23b52f790f7f1f3f6a27f640924eb 100644
+--- a/absl/status/status.cc
++++ b/absl/status/status.cc
+@@ -464,14 +464,18 @@ StatusCode ErrnoToStatusCode(int error_number) {
+     case EFAULT:        // Bad address
+     case EILSEQ:        // Illegal byte sequence
+     case ENOPROTOOPT:   // Protocol not available
++#ifdef ENOSTR
+     case ENOSTR:        // Not a STREAM
++#endif
+     case ENOTSOCK:      // Not a socket
+     case ENOTTY:        // Inappropriate I/O control operation
+     case EPROTOTYPE:    // Protocol wrong type for socket
+     case ESPIPE:        // Invalid seek
+       return StatusCode::kInvalidArgument;
+     case ETIMEDOUT:  // Connection timed out
++#ifdef ETIME
+     case ETIME:      // Timer expired
++#endif
+       return StatusCode::kDeadlineExceeded;
+     case ENODEV:  // No such device
+     case ENOENT:  // No such file or directory
+@@ -530,9 +534,13 @@ StatusCode ErrnoToStatusCode(int error_number) {
+     case EMLINK:   // Too many links
+     case ENFILE:   // Too many open files in system
+     case ENOBUFS:  // No buffer space available
++#ifdef ENODATA
+     case ENODATA:  // No message is available on the STREAM read queue
++#endif
+     case ENOMEM:   // Not enough space
++#ifdef ENOSR
+     case ENOSR:    // No STREAM resources
++#endif
+ #ifdef EUSERS
+     case EUSERS:  // Too many users
+ #endif
+@@ -575,7 +583,9 @@ StatusCode ErrnoToStatusCode(int error_number) {
+     case ENETRESET:     // Connection aborted by network
+     case ENETUNREACH:   // Network unreachable
+     case ENOLCK:        // No locks available
++#ifdef ENOLINK
+     case ENOLINK:       // Link has been severed
++#endif
+ #ifdef ENONET
+     case ENONET:  // Machine is not on the network
+ #endif

Ports/abseil/patches/0004-Remove-elf_mem_image-support-on-Serenity.patch

@@ -0,0 +1,22 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?kleines=20Filmr=C3=B6llchen?= <filmroellchen@serenityos.org>
+Date: Sat, 16 Sep 2023 11:11:05 +0200
+Subject: [PATCH] Remove elf_mem_image support on Serenity
+
+---
+ absl/debugging/internal/elf_mem_image.h | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/absl/debugging/internal/elf_mem_image.h b/absl/debugging/internal/elf_mem_image.h
+index e7fe6ab06e2ffdf78756f2fd3ebb2f9a78aa784c..565e8f6eb9b97c1dd7fc36b5a18c5f579fc40394 100644
+--- a/absl/debugging/internal/elf_mem_image.h
++++ b/absl/debugging/internal/elf_mem_image.h
+@@ -34,7 +34,7 @@
+ #if defined(__ELF__) && !defined(__OpenBSD__) && !defined(__QNX__) && \
+     !defined(__native_client__) && !defined(__asmjs__) &&             \
+     !defined(__wasm__) && !defined(__HAIKU__) && !defined(__sun) &&   \
+-    !defined(__VXWORKS__) && !defined(__hexagon__)
++    !defined(__VXWORKS__) && !defined(__hexagon__) && !defined(__serenity__)
+ #define ABSL_HAVE_ELF_MEM_IMAGE 1
+ #endif
+ 

Ports/abseil/patches/0005-Recognize-Serenity-as-having-mmap-pthread_getschedpa.patch

@@ -0,0 +1,41 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?kleines=20Filmr=C3=B6llchen?= <filmroellchen@serenityos.org>
+Date: Sat, 16 Sep 2023 11:39:18 +0200
+Subject: [PATCH] Recognize Serenity as having mmap, pthread_getschedparam, and
+ sched_yield
+
+---
+ absl/base/config.h | 6 +++---
+ 1 file changed, 3 insertions(+), 3 deletions(-)
+
+diff --git a/absl/base/config.h b/absl/base/config.h
+index 1de799300737100a4eb26e5f26fe8e75e6dcc010..8043049b7afa1f3423dc33a36ccc443b0dd49fbb 100644
+--- a/absl/base/config.h
++++ b/absl/base/config.h
+@@ -412,7 +412,7 @@ static_assert(ABSL_INTERNAL_INLINE_NAMESPACE_STR[0] != 'h' ||
+     defined(__asmjs__) || defined(__wasm__) || defined(__Fuchsia__) ||    \
+     defined(__sun) || defined(__ASYLO__) || defined(__myriad2__) ||       \
+     defined(__HAIKU__) || defined(__OpenBSD__) || defined(__NetBSD__) ||  \
+-    defined(__QNX__) || defined(__VXWORKS__) || defined(__hexagon__)
++    defined(__QNX__) || defined(__VXWORKS__) || defined(__hexagon__) || defined(__serenity__)
+ #define ABSL_HAVE_MMAP 1
+ #endif
+ 
+@@ -424,7 +424,7 @@ static_assert(ABSL_INTERNAL_INLINE_NAMESPACE_STR[0] != 'h' ||
+ #error ABSL_HAVE_PTHREAD_GETSCHEDPARAM cannot be directly set
+ #elif defined(__linux__) || defined(__APPLE__) || defined(__FreeBSD__) || \
+     defined(_AIX) || defined(__ros__) || defined(__OpenBSD__) ||          \
+-    defined(__NetBSD__) || defined(__VXWORKS__)
++    defined(__NetBSD__) || defined(__VXWORKS__) || defined(__serenity__)
+ #define ABSL_HAVE_PTHREAD_GETSCHEDPARAM 1
+ #endif
+ 
+@@ -444,7 +444,7 @@ static_assert(ABSL_INTERNAL_INLINE_NAMESPACE_STR[0] != 'h' ||
+ #ifdef ABSL_HAVE_SCHED_YIELD
+ #error ABSL_HAVE_SCHED_YIELD cannot be directly set
+ #elif defined(__linux__) || defined(__ros__) || defined(__native_client__) || \
+-    defined(__VXWORKS__)
++    defined(__VXWORKS__) || defined(__serenity__)
+ #define ABSL_HAVE_SCHED_YIELD 1
+ #endif
+ 

Ports/abseil/patches/ReadMe.md

@@ -0,0 +1,27 @@
+# Patches for abseil on SerenityOS
+
+## `0001-Remove-strptime-support-on-Serenity.patch`
+
+Remove strptime support on Serenity
+
+
+## `0002-Remove-LibC-timezone-support-on-Serenity.patch`
+
+Remove LibC timezone support on Serenity
+
+
+## `0003-Only-check-error-codes-on-platforms-where-they-exist.patch`
+
+Only check error codes on platforms where they exist
+
+
+## `0004-Remove-elf_mem_image-support-on-Serenity.patch`
+
+Remove elf_mem_image support on Serenity
+
+
+## `0005-Recognize-Serenity-as-having-mmap-pthread_getschedpa.patch`
+
+Recognize Serenity as having mmap, pthread_getschedparam, and sched_yield
+
+

Ports/protobuf/package.sh

@@ -0,0 +1,29 @@
+#!/usr/bin/env -S bash ../.port_include.sh
+port='protobuf'
+useconfigure='true'
+version='24.3'
+depends=(
+    'abseil'
+    'zlib'
+)
+configopts=(
+    "-DCMAKE_TOOLCHAIN_FILE=${SERENITY_BUILD_DIR}/CMakeToolchain.txt"
+    '-Dprotobuf_BUILD_TESTS=OFF'
+    # Don't use Protobuf's internal abseil, which is missing from the archive anyways.
+    '-Dprotobuf_ABSL_PROVIDER=package'
+)
+files=(
+    "git+https://github.com/protocolbuffers/protobuf.git#v${version}"
+)
+
+configure() {
+    run cmake -B build -G Ninja . "${configopts[@]}"
+}
+
+build() {
+    run cmake --build build
+}
+
+install() {
+    run cmake --install build
+}