From eab39784a16b4c981786bc50ef2112b31360aac1 Mon Sep 17 00:00:00 2001
From: dslm4515 <27793627+dslm4515@users.noreply.gitub.com>
Date: Tue, 6 Feb 2024 19:21:45 -0600
Subject: [PATCH] Added build for shaderc

---
 build-scripts/shaderc.build                   | 48 +++++++++++++++++++
 .../shaderc-chimera/drop-build-versions.patch | 34 +++++++++++++
 patches/shaderc-chimera/unbundle.patch        | 21 ++++++++
 3 files changed, 103 insertions(+)
 create mode 100644 build-scripts/shaderc.build
 create mode 100644 patches/shaderc-chimera/drop-build-versions.patch
 create mode 100644 patches/shaderc-chimera/unbundle.patch

diff --git a/build-scripts/shaderc.build b/build-scripts/shaderc.build
new file mode 100644
index 0000000..9fe562c
--- /dev/null
+++ b/build-scripts/shaderc.build
@@ -0,0 +1,48 @@
+#! /bin/bash
+
+# shaderc 
+# Source:  https://github.com/google/shaderc/archive/refs/tags/v2023.8.tar.gz
+#
+# $BUILD = Directory to temporarily install
+# $PKGS  = Directory to store built packages
+#
+# DEPS
+# Required:     spirv-tools spirv-headers glslang
+# Recommended:  NONE
+# Optional:     gmock
+
+patch -Np1 -i ../patches/shaderc-chimera/drop-build-versions.patch
+patch -Np1 -i ../patches/shaderc-chimera/unbundle.patch
+
+CFLAGS="-I/usr/include/glslang " \
+CXXFLAGS=$CFLAGS \
+cmake -B OUT -DCMAKE_INSTALL_PREFIX=/usr -GNinja \
+	-DCMAKE_BUILD_TYPE=Release \
+	-DSHADERC_SKIP_TESTS=ON -DSHADERC_SKIP_EXAMPLES=ON \
+	-DPYTHON_EXECUTABLE=python3 
+
+read -p "Compile?" && ninja -C OUT -j2 &&
+
+sudo -S DESTDIR=$BUILD ninja -C OUT install &&
+
+cd $BUILD && sudo -S mkdir -v ${BUILD}/install &&
+cat > /tmp/slack-desc << "EOF"
+# HOW TO EDIT THIS FILE:
+# The "handy ruler" below makes it easier to edit a package description.  Line
+# up the first '|' above the ':' following the base package name, and the '|'
+# on the right side marks the last column you can put a character in.  You must
+# make exactly 11 lines for the formatting to be correct.  It's also
+# customary to leave one space after the ':' except on otherwise blank lines.
+
+       |-----handy-ruler------------------------------------------------------|
+shaderc: shaderc
+shaderc:
+shaderc: A collection of tools, libraries, and tests for Vulkan shader 
+shaderc: compilation.
+shaderc:
+shaderc: https://github.com/google/shaderc
+shaderc:  
+EOF
+sudo -S mv -v /tmp/slack-desc install/ &&
+sudo -S makepkg -l y -c n $PKGS/shaderc-2023.8-$PSUFFIX &&
+sudo -S rm -rf ${BUILD}/*
diff --git a/patches/shaderc-chimera/drop-build-versions.patch b/patches/shaderc-chimera/drop-build-versions.patch
new file mode 100644
index 0000000..a585373
--- /dev/null
+++ b/patches/shaderc-chimera/drop-build-versions.patch
@@ -0,0 +1,34 @@
+From 7cba3e0aecc609661a4260601dbcf83329ee950c Mon Sep 17 00:00:00 2001
+From: Daniel Kolesa <daniel@octaforge.org>
+Date: Fri, 31 Dec 2021 17:26:07 +0100
+Subject: [PATCH] kill build version nonsense
+
+---
+ glslc/src/main.cc | 5 -----
+ 1 file changed, 5 deletions(-)
+
+diff --git a/glslc/src/main.cc b/glslc/src/main.cc
+index 5ca5d61..53e1618 100644
+--- a/glslc/src/main.cc
++++ b/glslc/src/main.cc
+@@ -197,10 +197,6 @@ bool SetResourceLimits(const std::string& str, shaderc::CompileOptions* options,
+   return true;
+ }
+ 
+-const char kBuildVersion[] =
+-#include "build-version.inc"
+-    ;
+-
+ // Gets an optional stage name followed by required offset argument.  Returns
+ // false and emits a message to *errs if any errors occur.  After calling this
+ // function, *index will be the index of the last command line argument
+@@ -286,7 +282,6 @@ int main(int argc, char** argv) {
+ #undef RESOURCE
+       return 0;
+     } else if (arg == "--version") {
+-      std::cout << kBuildVersion << std::endl;
+       std::cout << "Target: " << spvTargetEnvDescription(SPV_ENV_UNIVERSAL_1_0)
+                 << std::endl;
+       return 0;
+-- 
+2.32.0
diff --git a/patches/shaderc-chimera/unbundle.patch b/patches/shaderc-chimera/unbundle.patch
new file mode 100644
index 0000000..7431f9f
--- /dev/null
+++ b/patches/shaderc-chimera/unbundle.patch
@@ -0,0 +1,21 @@
+--- a/CMakeLists.txt
++++ b/CMakeLists.txt
+@@ -124,8 +124,6 @@ endif(MSVC)
+ 
+ # Configure subdirectories.
+ # We depend on these for later projects, so they should come first.
+-add_subdirectory(third_party)
+-
+ add_subdirectory(libshaderc_util)
+ add_subdirectory(libshaderc)
+ add_subdirectory(glslc)
+--- a/glslc/CMakeLists.txt
++++ b/glslc/CMakeLists.txt
+@@ -53,7 +53,6 @@ shaderc_default_compile_options(glslc_exe)
+ target_include_directories(glslc_exe PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/.. ${spirv-tools_SOURCE_DIR}/include)
+ set_target_properties(glslc_exe PROPERTIES OUTPUT_NAME glslc)
+ target_link_libraries(glslc_exe PRIVATE glslc shaderc_util shaderc)
+-add_dependencies(glslc_exe build-version)
+ 
+ shaderc_add_tests(
+   TEST_PREFIX glslc