Improve cmake toolchain files (#5144)

* [style] Use same style for cmake `set` command * [build] Specify CMAKE_FIND_ROOT_PATH_MODE_PACKAGE in xxx.toolchain.cmake * [build] Allow user passing args for cmake find cmds
Tencent · Nov 13, 2023 · 54e58bf · 54e58bf
1 parent a8c47bc
commit 54e58bf
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diff --git a/toolchains/aarch64-linux-gnu-c.toolchain.cmake b/toolchains/aarch64-linux-gnu-c.toolchain.cmake
@@ -4,9 +4,18 @@ set(CMAKE_SYSTEM_PROCESSOR aarch64)
 set(CMAKE_C_COMPILER "aarch64-linux-gnu-gcc")
 set(CMAKE_CXX_COMPILER "aarch64-linux-gnu-g++")
 
-set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER)
-set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)
-set(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)
+if(NOT CMAKE_FIND_ROOT_PATH_MODE_PROGRAM)
+    set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER)
+endif()
+if(NOT CMAKE_FIND_ROOT_PATH_MODE_LIBRARY)
+    set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)
+endif()
+if(NOT CMAKE_FIND_ROOT_PATH_MODE_INCLUDE)
+    set(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)
+endif()
+if(NOT CMAKE_FIND_ROOT_PATH_MODE_PACKAGE)
+    set(CMAKE_FIND_ROOT_PATH_MODE_PACKAGE ONLY)
+endif()
 
 set(CMAKE_C_FLAGS "-march=armv8-a")
 set(CMAKE_CXX_FLAGS "-march=armv8-a")

diff --git a/toolchains/aarch64-linux-gnu.toolchain.cmake b/toolchains/aarch64-linux-gnu.toolchain.cmake
@@ -4,9 +4,18 @@ set(CMAKE_SYSTEM_PROCESSOR aarch64)
 set(CMAKE_C_COMPILER "aarch64-linux-gnu-gcc")
 set(CMAKE_CXX_COMPILER "aarch64-linux-gnu-g++")
 
-set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER)
-set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)
-set(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)
+if(NOT CMAKE_FIND_ROOT_PATH_MODE_PROGRAM)
+    set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER)
+endif()
+if(NOT CMAKE_FIND_ROOT_PATH_MODE_LIBRARY)
+    set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)
+endif()
+if(NOT CMAKE_FIND_ROOT_PATH_MODE_INCLUDE)
+    set(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)
+endif()
+if(NOT CMAKE_FIND_ROOT_PATH_MODE_PACKAGE)
+    set(CMAKE_FIND_ROOT_PATH_MODE_PACKAGE ONLY)
+endif()
 
 set(CMAKE_C_FLAGS "-march=armv8-a")
 set(CMAKE_CXX_FLAGS "-march=armv8-a")

diff --git a/toolchains/arm-linux-gnueabi-c.toolchain.cmake b/toolchains/arm-linux-gnueabi-c.toolchain.cmake
@@ -4,9 +4,18 @@ set(CMAKE_SYSTEM_PROCESSOR arm)
 set(CMAKE_C_COMPILER "arm-linux-gnueabi-gcc")
 set(CMAKE_CXX_COMPILER "arm-linux-gnueabi-g++")
 
-set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER)
-set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)
-set(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)
+if(NOT CMAKE_FIND_ROOT_PATH_MODE_PROGRAM)
+    set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER)
+endif()
+if(NOT CMAKE_FIND_ROOT_PATH_MODE_LIBRARY)
+    set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)
+endif()
+if(NOT CMAKE_FIND_ROOT_PATH_MODE_INCLUDE)
+    set(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)
+endif()
+if(NOT CMAKE_FIND_ROOT_PATH_MODE_PACKAGE)
+    set(CMAKE_FIND_ROOT_PATH_MODE_PACKAGE ONLY)
+endif()
 
 set(CMAKE_C_FLAGS "-march=armv7-a -mfloat-abi=softfp -mfpu=neon")
 set(CMAKE_CXX_FLAGS "-march=armv7-a -mfloat-abi=softfp -mfpu=neon")

diff --git a/toolchains/arm-linux-gnueabi.toolchain.cmake b/toolchains/arm-linux-gnueabi.toolchain.cmake
@@ -4,9 +4,18 @@ set(CMAKE_SYSTEM_PROCESSOR arm)
 set(CMAKE_C_COMPILER "arm-linux-gnueabi-gcc")
 set(CMAKE_CXX_COMPILER "arm-linux-gnueabi-g++")
 
-set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER)
-set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)
-set(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)
+if(NOT CMAKE_FIND_ROOT_PATH_MODE_PROGRAM)
+    set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER)
+endif()
+if(NOT CMAKE_FIND_ROOT_PATH_MODE_LIBRARY)
+    set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)
+endif()
+if(NOT CMAKE_FIND_ROOT_PATH_MODE_INCLUDE)
+    set(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)
+endif()
+if(NOT CMAKE_FIND_ROOT_PATH_MODE_PACKAGE)
+    set(CMAKE_FIND_ROOT_PATH_MODE_PACKAGE ONLY)
+endif()
 
 set(CMAKE_C_FLAGS "-march=armv7-a -mfloat-abi=softfp -mfpu=neon")
 set(CMAKE_CXX_FLAGS "-march=armv7-a -mfloat-abi=softfp -mfpu=neon")

diff --git a/toolchains/arm-linux-gnueabihf-vfpv3-d16.toolchain.cmake b/toolchains/arm-linux-gnueabihf-vfpv3-d16.toolchain.cmake
@@ -4,9 +4,18 @@ set(CMAKE_SYSTEM_PROCESSOR arm)
 set(CMAKE_C_COMPILER "arm-linux-gnueabihf-gcc")
 set(CMAKE_CXX_COMPILER "arm-linux-gnueabihf-g++")
 
-set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER)
-set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)
-set(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)
+if(NOT CMAKE_FIND_ROOT_PATH_MODE_PROGRAM)
+    set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER)
+endif()
+if(NOT CMAKE_FIND_ROOT_PATH_MODE_LIBRARY)
+    set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)
+endif()
+if(NOT CMAKE_FIND_ROOT_PATH_MODE_INCLUDE)
+    set(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)
+endif()
+if(NOT CMAKE_FIND_ROOT_PATH_MODE_PACKAGE)
+    set(CMAKE_FIND_ROOT_PATH_MODE_PACKAGE ONLY)
+endif()
 
 set(CMAKE_C_FLAGS "-march=armv7-a -mfloat-abi=hard -mfpu=vfpv3-d16")
 set(CMAKE_CXX_FLAGS "-march=armv7-a -mfloat-abi=hard -mfpu=vfpv3-d16")

diff --git a/toolchains/arm-linux-gnueabihf.toolchain.cmake b/toolchains/arm-linux-gnueabihf.toolchain.cmake
@@ -4,9 +4,18 @@ set(CMAKE_SYSTEM_PROCESSOR arm)
 set(CMAKE_C_COMPILER "arm-linux-gnueabihf-gcc")
 set(CMAKE_CXX_COMPILER "arm-linux-gnueabihf-g++")
 
-set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER)
-set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)
-set(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)
+if(NOT CMAKE_FIND_ROOT_PATH_MODE_PROGRAM)
+    set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER)
+endif()
+if(NOT CMAKE_FIND_ROOT_PATH_MODE_LIBRARY)
+    set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)
+endif()
+if(NOT CMAKE_FIND_ROOT_PATH_MODE_INCLUDE)
+    set(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)
+endif()
+if(NOT CMAKE_FIND_ROOT_PATH_MODE_PACKAGE)
+    set(CMAKE_FIND_ROOT_PATH_MODE_PACKAGE ONLY)
+endif()
 
 set(CMAKE_C_FLAGS "-march=armv7-a -mfloat-abi=hard -mfpu=neon")
 set(CMAKE_CXX_FLAGS "-march=armv7-a -mfloat-abi=hard -mfpu=neon")

diff --git a/toolchains/c906-v222.toolchain.cmake b/toolchains/c906-v222.toolchain.cmake
@@ -17,10 +17,18 @@ set(CMAKE_FIND_ROOT_PATH "${RISCV_ROOT_PATH}/riscv64-unknown-linux-gnu")
 
 set(CMAKE_SYSROOT "${RISCV_ROOT_PATH}/sysroot")
 
-set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER)
-set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)
-set(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)
-set(CMAKE_FIND_ROOT_PATH_MODE_PACKAGE ONLY)
+if(NOT CMAKE_FIND_ROOT_PATH_MODE_PROGRAM)
+    set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER)
+endif()
+if(NOT CMAKE_FIND_ROOT_PATH_MODE_LIBRARY)
+    set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)
+endif()
+if(NOT CMAKE_FIND_ROOT_PATH_MODE_INCLUDE)
+    set(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)
+endif()
+if(NOT CMAKE_FIND_ROOT_PATH_MODE_PACKAGE)
+    set(CMAKE_FIND_ROOT_PATH_MODE_PACKAGE ONLY)
+endif()
 
 set(CMAKE_C_FLAGS "-march=rv64gcv0p7_zfh_xtheadc -mabi=lp64d -mtune=c906 -DC906=1 -static")
 set(CMAKE_CXX_FLAGS "-march=rv64gcv0p7_zfh_xtheadc -mabi=lp64d -mtune=c906 -DC906=1 -static")

diff --git a/toolchains/c906-v223.toolchain.cmake b/toolchains/c906-v223.toolchain.cmake
@@ -17,10 +17,18 @@ set(CMAKE_FIND_ROOT_PATH "${RISCV_ROOT_PATH}/riscv64-unknown-linux-gnu")
 
 set(CMAKE_SYSROOT "${RISCV_ROOT_PATH}/sysroot")
 
-set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER)
-set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)
-set(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)
-set(CMAKE_FIND_ROOT_PATH_MODE_PACKAGE ONLY)
+if(NOT CMAKE_FIND_ROOT_PATH_MODE_PROGRAM)
+    set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER)
+endif()
+if(NOT CMAKE_FIND_ROOT_PATH_MODE_LIBRARY)
+    set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)
+endif()
+if(NOT CMAKE_FIND_ROOT_PATH_MODE_INCLUDE)
+    set(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)
+endif()
+if(NOT CMAKE_FIND_ROOT_PATH_MODE_PACKAGE)
+    set(CMAKE_FIND_ROOT_PATH_MODE_PACKAGE ONLY)
+endif()
 
 set(CMAKE_C_FLAGS "-march=rv64gcv0p7_zfh_xtheadc -mabi=lp64d -mtune=c906 -DC906=1 -static")
 set(CMAKE_CXX_FLAGS "-march=rv64gcv0p7_zfh_xtheadc -mabi=lp64d -mtune=c906 -DC906=1 -static")

diff --git a/toolchains/c906-v226.toolchain.cmake b/toolchains/c906-v226.toolchain.cmake
@@ -17,10 +17,18 @@ set(CMAKE_FIND_ROOT_PATH "${RISCV_ROOT_PATH}/riscv64-unknown-linux-gnu")
 
 set(CMAKE_SYSROOT "${RISCV_ROOT_PATH}/sysroot")
 
-set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER)
-set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)
-set(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)
-set(CMAKE_FIND_ROOT_PATH_MODE_PACKAGE ONLY)
+if(NOT CMAKE_FIND_ROOT_PATH_MODE_PROGRAM)
+    set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER)
+endif()
+if(NOT CMAKE_FIND_ROOT_PATH_MODE_LIBRARY)
+    set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)
+endif()
+if(NOT CMAKE_FIND_ROOT_PATH_MODE_INCLUDE)
+    set(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)
+endif()
+if(NOT CMAKE_FIND_ROOT_PATH_MODE_PACKAGE)
+    set(CMAKE_FIND_ROOT_PATH_MODE_PACKAGE ONLY)
+endif()
 
 set(CMAKE_C_FLAGS "-march=rv64gcv0p7_zfh_xtheadc -mabi=lp64d -mtune=c906 -DC906=1 -static")
 set(CMAKE_CXX_FLAGS "-march=rv64gcv0p7_zfh_xtheadc -mabi=lp64d -mtune=c906 -DC906=1 -static")

diff --git a/toolchains/c906-v240.toolchain.cmake b/toolchains/c906-v240.toolchain.cmake
@@ -17,10 +17,18 @@ set(CMAKE_FIND_ROOT_PATH "${RISCV_ROOT_PATH}/riscv64-unknown-linux-gnu")
 
 set(CMAKE_SYSROOT "${RISCV_ROOT_PATH}/sysroot")
 
-set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER)
-set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)
-set(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)
-set(CMAKE_FIND_ROOT_PATH_MODE_PACKAGE ONLY)
+if(NOT CMAKE_FIND_ROOT_PATH_MODE_PROGRAM)
+    set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER)
+endif()
+if(NOT CMAKE_FIND_ROOT_PATH_MODE_LIBRARY)
+    set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)
+endif()
+if(NOT CMAKE_FIND_ROOT_PATH_MODE_INCLUDE)
+    set(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)
+endif()
+if(NOT CMAKE_FIND_ROOT_PATH_MODE_PACKAGE)
+    set(CMAKE_FIND_ROOT_PATH_MODE_PACKAGE ONLY)
+endif()
 
 set(CMAKE_C_FLAGS "-march=rv64gcv0p7_zfh_xtheadc -mabi=lp64d -mtune=c906 -DC906=1 -static")
 set(CMAKE_CXX_FLAGS "-march=rv64gcv0p7_zfh_xtheadc -mabi=lp64d -mtune=c906 -DC906=1 -static")

diff --git a/toolchains/c910-v240.toolchain.cmake b/toolchains/c910-v240.toolchain.cmake
@@ -17,10 +17,18 @@ set(CMAKE_FIND_ROOT_PATH "${RISCV_ROOT_PATH}/riscv64-unknown-linux-gnu")
 
 set(CMAKE_SYSROOT "${RISCV_ROOT_PATH}/sysroot")
 
-set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER)
-set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)
-set(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)
-set(CMAKE_FIND_ROOT_PATH_MODE_PACKAGE ONLY)
+if(NOT CMAKE_FIND_ROOT_PATH_MODE_PROGRAM)
+    set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER)
+endif()
+if(NOT CMAKE_FIND_ROOT_PATH_MODE_LIBRARY)
+    set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)
+endif()
+if(NOT CMAKE_FIND_ROOT_PATH_MODE_INCLUDE)
+    set(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)
+endif()
+if(NOT CMAKE_FIND_ROOT_PATH_MODE_PACKAGE)
+    set(CMAKE_FIND_ROOT_PATH_MODE_PACKAGE ONLY)
+endif()
 
 set(CMAKE_C_FLAGS "-march=rv64gcxtheadc -mabi=lp64d -mtune=c910 -DC906=1 -static")
 set(CMAKE_CXX_FLAGS "-march=rv64gcxtheadc -mabi=lp64d -mtune=c910 -DC906=1 -static")

diff --git a/toolchains/himix100.toolchain.cmake b/toolchains/himix100.toolchain.cmake
@@ -1,18 +1,27 @@
 # set cross-compiled system type, it's better not use the type which cmake cannot recognized.
-SET ( CMAKE_SYSTEM_NAME Linux )
-SET ( CMAKE_SYSTEM_PROCESSOR aarch64 )
+set(CMAKE_SYSTEM_NAME Linux)
+set(CMAKE_SYSTEM_PROCESSOR aarch64)
 # when hislicon SDK was installed, toolchain was installed in the path as below: 
-SET ( CMAKE_C_COMPILER "/opt/hisi-linux/x86-arm/aarch64-himix100-linux/bin/aarch64-himix100-linux-gcc" )
-SET ( CMAKE_CXX_COMPILER "/opt/hisi-linux/x86-arm/aarch64-himix100-linux/bin/aarch64-himix100-linux-g++" )
-SET ( CMAKE_FIND_ROOT_PATH "/opt/hisi-linux/x86-arm/aarch64-himix100-linux" )
+set(CMAKE_C_COMPILER "/opt/hisi-linux/x86-arm/aarch64-himix100-linux/bin/aarch64-himix100-linux-gcc")
+set(CMAKE_CXX_COMPILER "/opt/hisi-linux/x86-arm/aarch64-himix100-linux/bin/aarch64-himix100-linux-g++")
+set(CMAKE_FIND_ROOT_PATH "/opt/hisi-linux/x86-arm/aarch64-himix100-linux")
 
 # set searching rules for cross-compiler
-SET ( CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER )
-SET ( CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY )
-SET ( CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY )
+if(NOT CMAKE_FIND_ROOT_PATH_MODE_PROGRAM)
+    set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER)
+endif()
+if(NOT CMAKE_FIND_ROOT_PATH_MODE_LIBRARY)
+    set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)
+endif()
+if(NOT CMAKE_FIND_ROOT_PATH_MODE_INCLUDE)
+    set(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)
+endif()
+if(NOT CMAKE_FIND_ROOT_PATH_MODE_PACKAGE)
+    set(CMAKE_FIND_ROOT_PATH_MODE_PACKAGE ONLY)
+endif()
 
 # set ${CMAKE_C_FLAGS} and ${CMAKE_CXX_FLAGS}flag for cross-compiled process
-SET ( CMAKE_CXX_FLAGS "-march=armv8-a ${CMAKE_CXX_FLAGS}" )
+set(CMAKE_CXX_FLAGS "-march=armv8-a ${CMAKE_CXX_FLAGS}")
 
 # cache flags
 set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS}" CACHE STRING "c flags")

diff --git a/toolchains/himix200.toolchain.cmake b/toolchains/himix200.toolchain.cmake
@@ -1,21 +1,30 @@
 # set cross-compiled system type, it's better not use the type which cmake cannot recognized.
-SET ( CMAKE_SYSTEM_NAME Linux )
-SET ( CMAKE_SYSTEM_PROCESSOR arm )
+set(CMAKE_SYSTEM_NAME Linux)
+set(CMAKE_SYSTEM_PROCESSOR arm)
 # when hislicon SDK was installed, toolchain was installed in the path as below: 
-SET ( CMAKE_C_COMPILER /opt/hisi-linux/x86-arm/arm-himix200-linux/bin/arm-himix200-linux-gcc )
-SET ( CMAKE_CXX_COMPILER /opt/hisi-linux/x86-arm/arm-himix200-linux/bin/arm-himix200-linux-g++ )
+set(CMAKE_C_COMPILER /opt/hisi-linux/x86-arm/arm-himix200-linux/bin/arm-himix200-linux-gcc)
+set(CMAKE_CXX_COMPILER /opt/hisi-linux/x86-arm/arm-himix200-linux/bin/arm-himix200-linux-g++)
 
 # set searching rules for cross-compiler
-SET ( CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER )
-SET ( CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY )
-SET ( CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY )
+if(NOT CMAKE_FIND_ROOT_PATH_MODE_PROGRAM)
+    set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER)
+endif()
+if(NOT CMAKE_FIND_ROOT_PATH_MODE_LIBRARY)
+    set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)
+endif()
+if(NOT CMAKE_FIND_ROOT_PATH_MODE_INCLUDE)
+    set(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)
+endif()
+if(NOT CMAKE_FIND_ROOT_PATH_MODE_PACKAGE)
+    set(CMAKE_FIND_ROOT_PATH_MODE_PACKAGE ONLY)
+endif()
 
 # set ${CMAKE_C_FLAGS} and ${CMAKE_CXX_FLAGS}flag for cross-compiled process
-SET ( CROSS_COMPILATION_ARM himix200 )
-SET ( CROSS_COMPILATION_ARCHITECTURE armv7-a )
+set(CROSS_COMPILATION_ARM himix200)
+set(CROSS_COMPILATION_ARCHITECTURE armv7-a)
 
 # set g++ param
-SET ( CMAKE_CXX_FLAGS "-march=armv7-a -mfloat-abi=softfp -mfpu=neon-vfpv4 ${CMAKE_CXX_FLAGS}" )
+set(CMAKE_CXX_FLAGS "-march=armv7-a -mfloat-abi=softfp -mfpu=neon-vfpv4 ${CMAKE_CXX_FLAGS}")
 
 # cache flags
 set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS}" CACHE STRING "c flags")

diff --git a/toolchains/hisiv300.toolchain.cmake b/toolchains/hisiv300.toolchain.cmake
@@ -1,18 +1,27 @@
 # set cross-compiled system type, it's better not use the type which cmake cannot recognized.
-SET ( CMAKE_SYSTEM_NAME Linux )
-SET ( CMAKE_SYSTEM_PROCESSOR arm )
-# when hislicon SDK was installed, toolchain was installed in the path as below: 
-SET ( CMAKE_C_COMPILER "/opt/hisi-linux/x86-arm/arm-hisiv300-linux/target/bin/arm-hisiv300-linux-gcc" )
-SET ( CMAKE_CXX_COMPILER "/opt/hisi-linux/x86-arm/arm-hisiv300-linux/target/bin/arm-hisiv300-linux-g++" )
-SET ( CMAKE_FIND_ROOT_PATH "/opt/hisi-linux/x86-arm/arm-hisiv300-linux" )
+set(CMAKE_SYSTEM_NAME Linux)
+set(CMAKE_SYSTEM_PROCESSOR arm)
+# when hislicon SDK was installed, toolchain was installed in the path as below:
+set(CMAKE_C_COMPILER "/opt/hisi-linux/x86-arm/arm-hisiv300-linux/target/bin/arm-hisiv300-linux-gcc")
+set(CMAKE_CXX_COMPILER "/opt/hisi-linux/x86-arm/arm-hisiv300-linux/target/bin/arm-hisiv300-linux-g++")
+set(CMAKE_FIND_ROOT_PATH "/opt/hisi-linux/x86-arm/arm-hisiv300-linux" )
 
 # set searching rules for cross-compiler
-SET ( CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER )
-SET ( CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY )
-SET ( CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY )
+if(NOT CMAKE_FIND_ROOT_PATH_MODE_PROGRAM)
+    set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER)
+endif()
+if(NOT CMAKE_FIND_ROOT_PATH_MODE_LIBRARY)
+    set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)
+endif()
+if(NOT CMAKE_FIND_ROOT_PATH_MODE_INCLUDE)
+    set(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)
+endif()
+if(NOT CMAKE_FIND_ROOT_PATH_MODE_PACKAGE)
+    set(CMAKE_FIND_ROOT_PATH_MODE_PACKAGE ONLY)
+endif()
 
 # set ${CMAKE_C_FLAGS} and ${CMAKE_CXX_FLAGS}flag for cross-compiled process
-SET ( CMAKE_CXX_FLAGS "-march=armv7-a -mfloat-abi=softfp -mfpu=neon-vfpv4 ${CMAKE_CXX_FLAGS}" )
+set(CMAKE_CXX_FLAGS "-march=armv7-a -mfloat-abi=softfp -mfpu=neon-vfpv4 ${CMAKE_CXX_FLAGS}")
 
 # cache flags
 set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS}" CACHE STRING "c flags")