diff --git a/toolchains/arm64.cmake b/toolchains/arm64.cmake
index 80eaeca..53d435e 100644
--- a/toolchains/arm64.cmake
+++ b/toolchains/arm64.cmake
@@ -5,4 +5,4 @@ set(CMAKE_SYSTEM_PROCESSOR aarch64)
 set(CMAKE_FIND_ROOT_PATH /usr/lib/aarch64-linux-gnu)
 set(CMAKE_INSTALL_LIBDIR "lib/aarch64-linux-gnu")
 set(TOOLCHAIN_PREFIX aarch64-linux-gnu-)
-set(ENV{PKG_CONFIG_LIBDIR} /usr/lib/aarch64-linux-gnu/pkgconfig)
\ No newline at end of file
+set(ENV{PKG_CONFIG_LIBDIR} "/usr/lib/aarch64-linux-gnu/pkgconfig:/usr/share/pkgconfig")
\ No newline at end of file
diff --git a/toolchains/armhf.cmake b/toolchains/armhf.cmake
index 72c585e..e4ed2f0 100644
--- a/toolchains/armhf.cmake
+++ b/toolchains/armhf.cmake
@@ -5,4 +5,4 @@ set(CMAKE_SYSTEM_PROCESSOR arm)
 set(CMAKE_FIND_ROOT_PATH /usr/lib/arm-linux-gnuabihf)
 set(CMAKE_INSTALL_LIBDIR "lib/arm-linux-gnuabihf")
 set(TOOLCHAIN_PREFIX arm-linux-gnueabihf-)
-set(ENV{PKG_CONFIG_LIBDIR} /usr/lib/arm-linux-gnu-gnuabihf/pkgconfig)
\ No newline at end of file
+set(ENV{PKG_CONFIG_LIBDIR} "/usr/lib/arm-linux-gnuabihf/pkgconfig:/usr/share/pkgconfig")
\ No newline at end of file
diff --git a/toolchains/i386.cmake b/toolchains/i386.cmake
index fc63175..70ce733 100644
--- a/toolchains/i386.cmake
+++ b/toolchains/i386.cmake
@@ -5,4 +5,4 @@ set(CMAKE_SYSTEM_PROCESSOR i686)
 set(CMAKE_FIND_ROOT_PATH /usr/lib/i686-linux-gnu)
 set(CMAKE_INSTALL_LIBDIR "lib/i686-linux-gnu")
 set(TOOLCHAIN_PREFIX i686-linux-gnu-)
-set(ENV{PKG_CONFIG_LIBDIR} /usr/lib/i686-linux-gnu/pkgconfig)
\ No newline at end of file
+set(ENV{PKG_CONFIG_LIBDIR} "/usr/lib/i686-linux-gnu/pkgconfig:/usr/share/pkgconfig")
\ No newline at end of file
diff --git a/toolchains/riscv64.cmake b/toolchains/riscv64.cmake
index 287814b..513130a 100644
--- a/toolchains/riscv64.cmake
+++ b/toolchains/riscv64.cmake
@@ -5,4 +5,4 @@ set(CMAKE_SYSTEM_PROCESSOR riscv64)
 set(CMAKE_FIND_ROOT_PATH /usr/lib/riscv64-linux-gnu)
 set(CMAKE_INSTALL_LIBDIR "lib/riscv64-linux-gnu")
 set(TOOLCHAIN_PREFIX riscv64-linux-gnu-)
-set(ENV{PKG_CONFIG_LIBDIR} /usr/lib/riscv64-linux-gnu/pkgconfig)
\ No newline at end of file
+set(ENV{PKG_CONFIG_LIBDIR} "/usr/lib/riscv64-linux-gnu/pkgconfig:/usr/share/pkgconfig")
\ No newline at end of file