From 6db40feaced23cc63854ae80ba955c5d4745922e Mon Sep 17 00:00:00 2001
From: Vojtech Kral <vojtech@kral.hk>
Date: Fri, 11 Jan 2019 12:24:25 +0100
Subject: Build: Add a flag to disable PCH

---
 CMakeLists.txt               | 13 ++++++++++---
 src/libslic3r/CMakeLists.txt |  2 +-
 src/slic3r/CMakeLists.txt    |  2 +-
 3 files changed, 12 insertions(+), 5 deletions(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 76c937cae..e2677824c 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -27,6 +27,7 @@ option(SLIC3R_GUI    			"Compile Slic3r with GUI components (OpenGL, wxWidgets)"
 option(SLIC3R_FHS               "Assume Slic3r is to be installed in a FHS directory structure" 0)
 option(SLIC3R_WX_STABLE         "Build against wxWidgets stable (3.0) as oppsed to dev (3.1) on Linux" 0)
 option(SLIC3R_PROFILE 			"Compile Slic3r with an invasive Shiny profiler" 0)
+option(SLIC3R_PCH               "Use precompiled headers" 1)
 option(SLIC3R_MSVC_COMPILE_PARALLEL "Compile on Visual Studio in parallel" 1)
 option(SLIC3R_MSVC_PDB          "Generate PDB files on MSVC in Release mode" 1)
 option(SLIC3R_PERL_XS           "Compile XS Perl module and enable Perl unit and integration tests" 0)
@@ -37,6 +38,15 @@ option(SLIC3R_SYNTAXONLY        "Only perform source code correctness checking,
 option(SLIC3R_BUILD_SANDBOXES   "Build development sandboxes" OFF)
 option(SLIC3R_BUILD_TESTS       "Build unit tests" OFF)
 
+# Print out the SLIC3R_* cache options
+get_cmake_property(_cache_vars CACHE_VARIABLES)
+list (SORT _cache_vars)
+foreach (_cache_var ${_cache_vars})
+    if("${_cache_var}" MATCHES "^SLIC3R_")
+        message(STATUS "${_cache_var}: ${${_cache_var}}")
+    endif ()
+endforeach()
+
 if (MSVC)
     if (SLIC3R_MSVC_COMPILE_PARALLEL)
 	   add_compile_options(/MP)
@@ -46,7 +56,6 @@ if (MSVC)
     add_compile_options(-bigobj -Zm316)
 endif ()
 
-
 # Display and check CMAKE_PREFIX_PATH
 message(STATUS "SLIC3R_STATIC: ${SLIC3R_STATIC}")
 if (NOT "${CMAKE_PREFIX_PATH}" STREQUAL "")
@@ -65,8 +74,6 @@ foreach (DIR ${PREFIX_PATH_CHECK})
     endif ()
 endforeach ()
 
-message(STATUS "SLIC3R_FHS: ${SLIC3R_FHS}")
-
 # Add our own cmake module path.
 list(APPEND CMAKE_MODULE_PATH ${PROJECT_SOURCE_DIR}/cmake/modules/)
 
diff --git a/src/libslic3r/CMakeLists.txt b/src/libslic3r/CMakeLists.txt
index 7870bd1fb..c97d3d972 100644
--- a/src/libslic3r/CMakeLists.txt
+++ b/src/libslic3r/CMakeLists.txt
@@ -171,7 +171,7 @@ add_library(libslic3r STATIC
     SLA/SLASpatIndex.hpp
 )
 
-if (NOT SLIC3R_SYNTAXONLY)
+if (SLIC3R_PCH AND NOT SLIC3R_SYNTAXONLY)
     add_precompiled_header(libslic3r pchheader.hpp FORCEINCLUDE)
 endif ()
 
diff --git a/src/slic3r/CMakeLists.txt b/src/slic3r/CMakeLists.txt
index d79421439..783c65293 100644
--- a/src/slic3r/CMakeLists.txt
+++ b/src/slic3r/CMakeLists.txt
@@ -128,6 +128,6 @@ add_library(libslic3r_gui STATIC
 )
 
 target_link_libraries(libslic3r_gui libslic3r avrdude imgui)
-if (NOT SLIC3R_SYNTAXONLY)
+if (SLIC3R_PCH AND NOT SLIC3R_SYNTAXONLY)
     add_precompiled_header(libslic3r_gui pchheader.hpp FORCEINCLUDE)
 endif ()
-- 
cgit v1.2.3