diff --git a/common/shlibs b/common/shlibs
index 43b31e9ae65..2aedb6fdda6 100644
--- a/common/shlibs
+++ b/common/shlibs
@@ -3239,6 +3239,7 @@ libTKOffset.so.7 occt-7.2.0p1_1
 libTKXDESTEP.so.7 occt-7.2.0p1_1
 libTKQADraw.so.7 occt-7.2.0p1_1
 libTKXmlL.so.7 occt-7.2.0p1_1
+libTKRWMesh.so.7 occt-7.4.0_1
 libargon2.so.1 libargon2-20171227_1
 libdazzle-1.0.so.0 libdazzle-3.28.0_1
 libjsonrpc-glib-1.0.so.1 jsonrpc-glib-3.28.0_1
diff --git a/srcpkgs/occt/files/opencascade.sh b/srcpkgs/occt/files/opencascade.sh
new file mode 100644
index 00000000000..4d30d9ff1d6
--- /dev/null
+++ b/srcpkgs/occt/files/opencascade.sh
@@ -0,0 +1,24 @@
+export CASROOT=/usr
+
+export CSF_LANGUAGE=us
+export MMGT_CLEAR=1
+export CSF_EXCEPTION_PROMPT=1
+
+export CSF_OCCTResourcePath=$CASROOT/share/opencascade/resources
+export CSF_SHMessage=$CSF_OCCTResourcePath/SHMessage
+export CSF_MDTVTexturesDirectory=$CSF_OCCTResourcePath/Textures
+export CSF_ShadersDirectory=$CSF_OCCTResourcePath/Shaders
+export CSF_XSMessage=$CSF_OCCTResourcePath/XSMessage
+export CSF_TObjMessage=$CSF_OCCTResourcePath/TObj
+export CSF_StandardDefaults=$CSF_OCCTResourcePath/StdResource
+export CSF_PluginDefaults=$CSF_OCCTResourcePath/StdResource
+export CSF_XCAFDefaults=$CSF_OCCTResourcePath/StdResource
+export CSF_TObjDefaults=$CSF_OCCTResourcePath/StdResource
+export CSF_StandardLiteDefaults=$CSF_OCCTResourcePath/StdResource
+export CSF_IGESDefaults=$CSF_OCCTResourcePath/XSTEPResource
+export CSF_STEPDefaults=$CSF_OCCTResourcePath/XSTEPResource
+export CSF_XmlOcafResource=$CSF_OCCTResourcePath/XmlOcafResource
+export CSF_MIGRATION_TYPES=$CSF_OCCTResourcePath/StdResource/MigrationSheet.txt
+export CSF_DrawPluginDefaults=$CSF_OCCTResourcePath/DrawResources
+export DRAWHOME=$CSF_OCCTResourcePath/DrawResources
+export DRAWDEFAULT=$CSF_OCCTResourcePath/DrawResources/DrawDefault
diff --git a/srcpkgs/occt/patches/musl-fenv.patch b/srcpkgs/occt/patches/musl-fenv.patch
index 4a2e880db4f..c4fd770646d 100644
--- a/srcpkgs/occt/patches/musl-fenv.patch
+++ b/srcpkgs/occt/patches/musl-fenv.patch
@@ -7,7 +7,7 @@ non-posix functions fegetexcept(3) and feenableexcept(3).
 
 --- src/OSD/OSD_signal.cxx.orig
 +++ src/OSD/OSD_signal.cxx
-@@ -645,7 +645,7 @@
+@@ -703,7 +703,7 @@
  
  #include <signal.h>
  
@@ -16,40 +16,21 @@ non-posix functions fegetexcept(3) and feenableexcept(3).
    #include <sys/signal.h>
  #endif
  
-@@ -687,7 +687,7 @@
-   // cout << "OSD::Handler: signal " << (int) theSignal << " occured inside a try block " <<  endl ;
-   if ( ADR_ACT_SIGIO_HANDLER != NULL )
-     (*ADR_ACT_SIGIO_HANDLER)() ;
--#ifdef __linux__
-+#if defined(__linux__) && defined(__GLIBC__)
-   if (fFltExceptions)
-     feenableexcept (FE_INVALID | FE_DIVBYZERO | FE_OVERFLOW);
-     //feenableexcept (FE_INVALID | FE_DIVBYZERO);
-@@ -805,7 +805,7 @@
-   (void)theSignal; // silence GCC warnings
-   (void)theContext;
- 
--#ifdef __linux__
-+#if defined(__linux__) && defined(__GLIBC__)
-   if (fFltExceptions)
-     feenableexcept (FE_INVALID | FE_DIVBYZERO | FE_OVERFLOW);
-     //feenableexcept (FE_INVALID | FE_DIVBYZERO);
-@@ -892,14 +892,18 @@
- #endif
-     }
- #elif defined (__linux__)
-+#if defined(__GLIBC__)
-     feenableexcept (FE_INVALID | FE_DIVBYZERO | FE_OVERFLOW);
-+#endif
-     fFltExceptions = Standard_True;
- #endif
-   }
-   else
+@@ -914,7 +914,7 @@
+ //=======================================================================
+ void OSD::SetFloatingSignal (Standard_Boolean theFloatingSignal)
+ {
+-#if defined (__linux__)
++#if defined (__linux__) && defined(__GLIBC__)
+   feclearexcept (FE_ALL_EXCEPT);
+   if (theFloatingSignal)
    {
- #if defined (__linux__)
-+#if defined(__GLIBC__)
-     fedisableexcept (FE_INVALID | FE_DIVBYZERO | FE_OVERFLOW);
-+#endif
-     fFltExceptions = Standard_False;
- #endif
-   }
+@@ -947,7 +947,7 @@
+ //=======================================================================
+ Standard_Boolean OSD::ToCatchFloatingSignals()
+ {
+-#if defined (__linux__)
++#if defined (__linux__) && defined(__GLIBC__)
+   return (fegetexcept() & _OSD_FPX) != 0;
+ #else
+   return Standard_False;
diff --git a/srcpkgs/occt/template b/srcpkgs/occt/template
index 70647369464..3b131d74512 100644
--- a/srcpkgs/occt/template
+++ b/srcpkgs/occt/template
@@ -1,6 +1,6 @@
 # Template file for 'occt'
 pkgname=occt
-version=7.3.0p3
+version=7.4.0
 revision=1
 _gittag="V${version//./_}"
 wrksrc=occt-${_gittag}
@@ -13,16 +13,19 @@ short_desc="OpenCASCADE Technology - library for CAD/CAM/CAE applications"
 maintainer="Piraty <piraty1@inbox.ru>"
 license="LGPL-2.1-only"
 homepage="https://www.opencascade.com"
-# distifile: use git instead of official tarball that requires registration
+# distfile: use git instead of official tarball, which requires registration
 # see https://www.opencascade.com/content/packaging-again-debian
 distfiles="https://git.dev.opencascade.org/gitweb/?p=occt.git;a=snapshot;h=refs/tags/${_gittag};sf=tgz>occt-${_gittag}.tar.gz"
-checksum=fbd46db3e75313131b88a606024ea4d4496c3c7f6e68c23988e9d3e673d4f21b
+checksum=655da7717dac3460a22a6a7ee68860c1da56da2fec9c380d8ac0ac0349d67676
 conflicts="oce>=0"
 
 post_install() {
 	rm ${PKGDESTDIR}/usr/share/doc/opencascade/*_LGPL_*.txt
 	vlicense OCCT_LGPL_EXCEPTION.txt
 	rm ${DESTDIR}/usr/bin/custom*.sh
+
+	vmkdir /etc/profile.d
+	vinstall ${FILESDIR}/opencascade.sh 644 /etc/profile.d
 }
 
 occt-devel_package() {