lavfi/glslang: migrate to the C API and robustify library detection

Finally, this is as close to usable as it gets for glslang.
Much faster to compile as well, and eliminates the need for a C++
compiler, which is great.
Also, changes to the resource limits won't break users, as we
can use designated initializers in C90.

1 files changed, 10 insertions, 5 deletions

diff --git a/configure b/configure
index 804bbe4c53..eb451d2782 100755
--- a/configure
+++ b/configure
@@ -3564,7 +3564,7 @@ ass_filter_deps="libass"
 atempo_filter_deps="avcodec"
 atempo_filter_select="rdft"
 avgblur_opencl_filter_deps="opencl"
-avgblur_vulkan_filter_deps="libglslang"
+avgblur_vulkan_filter_deps="vulkan libglslang"
 azmq_filter_deps="libzmq"
 blackframe_filter_deps="gpl"
 bm3d_filter_deps="avcodec"
@@ -3572,7 +3572,7 @@ bm3d_filter_select="dct"
 boxblur_filter_deps="gpl"
 boxblur_opencl_filter_deps="opencl gpl"
 bs2b_filter_deps="libbs2b"
-chromaber_vulkan_filter_deps="libglslang"
+chromaber_vulkan_filter_deps="vulkan libglslang"
 colorkey_opencl_filter_deps="opencl"
 colormatrix_filter_deps="gpl"
 convolution_opencl_filter_deps="opencl"
@@ -3635,7 +3635,7 @@ openclsrc_filter_deps="opencl"
 overlay_opencl_filter_deps="opencl"
 overlay_qsv_filter_deps="libmfx"
 overlay_qsv_filter_select="qsvvpp"
-overlay_vulkan_filter_deps="libglslang"
+overlay_vulkan_filter_deps="vulkan libglslang"
 owdenoise_filter_deps="gpl"
 pad_opencl_filter_deps="opencl"
 pan_filter_deps="swresample"
@@ -3698,7 +3698,7 @@ zmq_filter_deps="libzmq"
 zoompan_filter_deps="swscale"
 zscale_filter_deps="libzimg const_nan"
 scale_vaapi_filter_deps="vaapi"
-scale_vulkan_filter_deps="libglslang"
+scale_vulkan_filter_deps="vulkan libglslang"
 vpp_qsv_filter_deps="libmfx"
 vpp_qsv_filter_select="qsvvpp"
 xfade_opencl_filter_deps="opencl"
@@ -6440,7 +6440,12 @@ enabled fontconfig        && enable libfontconfig
 enabled libfontconfig     && require_pkg_config libfontconfig fontconfig "fontconfig/fontconfig.h" FcInit
 enabled libfreetype       && require_pkg_config libfreetype freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
 enabled libfribidi        && require_pkg_config libfribidi fribidi fribidi.h fribidi_version_info
-enabled libglslang        && require_cpp libglslang glslang/SPIRV/GlslangToSpv.h "glslang::TIntermediate*" -lglslang -lMachineIndependent -lOSDependent -lHLSL -lOGLCompiler -lGenericCodeGen -lSPVRemapper -lSPIRV -lSPIRV-Tools-opt -lSPIRV-Tools -lpthread -lstdc++
+enabled libglslang && { check_lib libglslang glslang/Include/glslang_c_interface.h glslang_initialize_process \
+                            -lglslang -lMachineIndependent -lOSDependent -lHLSL -lOGLCompiler -lGenericCodeGen \
+                            -lSPVRemapper -lSPIRV -lSPIRV-Tools-opt -lSPIRV-Tools -lpthread -lstdc++ -lm ||
+                        require libglslang glslang/Include/glslang_c_interface.h glslang_initialize_process \
+                            -lglslang -lOSDependent -lHLSL -lOGLCompiler \
+                            -lSPVRemapper -lSPIRV -lSPIRV-Tools-opt -lSPIRV-Tools -lpthread -lstdc++ -lm; }
 enabled libgme            && { check_pkg_config libgme libgme gme/gme.h gme_new_emu ||
                                require libgme gme/gme.h gme_new_emu -lgme -lstdc++; }
 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do