LCC: Add dedicated support for MCST LCC compiler

Divert LCC compiler as a new one, instead of treating it as GNU.

Since old times, Elbrus C/C++/Fortran Compiler (LCC) by MCST has been
passing checks for GNU compilers, so it has been identified as GNU.
Now, with intent of seriously upstreaming its support, it has been
added as a separate LCC compiler, and its version displays not a
supported GCC version, but LCC version itself (e.g. LCC 1.25.19 instead
of GNU 7.3.0).

This commit adds its support for detection, and also converts basically
every check like 'is this compiler GNU?' to 'is this compiler GNU or
LCC?'. The only places where this check is untouched, is where it
regards other platforms where LCC is unavailable (primarily non-Linux),
and where it REALLY differs from GNU compiler.

Note: this transition may break software that are already ported to
Elbrus, but hardly relies that LCC will be detected as GNU; still such
software is not known.

1 files changed, 7 insertions, 7 deletions

diff --git a/Utilities/cmlibarchive/CMakeLists.txt b/Utilities/cmlibarchive/CMakeLists.txt
index ba65470..c1ac991 100644
--- a/Utilities/cmlibarchive/CMakeLists.txt
+++ b/Utilities/cmlibarchive/CMakeLists.txt
@@ -94,7 +94,7 @@ SET(CMAKE_REQUIRED_FLAGS)
 
 # Disable warnings to avoid changing 3rd party code.
 IF(CMAKE_C_COMPILER_ID MATCHES
-    "^(GNU|Clang|AppleClang|XLClang|XL|VisualAge|SunPro|HP|Intel|IntelLLVM|NVHPC)$")
+    "^(GNU|LCC|Clang|AppleClang|XLClang|XL|VisualAge|SunPro|HP|Intel|IntelLLVM|NVHPC)$")
   SET(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -w")
 ELSEIF(CMAKE_C_COMPILER_ID STREQUAL "PathScale")
   SET(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -woffall")
@@ -110,7 +110,7 @@ endif ()
 # Especially for early development, we want to be a little
 # aggressive about diagnosing build problems; this can get
 # relaxed somewhat in final shipping versions.
-IF (CMAKE_C_COMPILER_ID MATCHES "^GNU$")
+IF (CMAKE_C_COMPILER_ID MATCHES "^GNU$" OR CMAKE_C_COMPILER_ID MATCHES "^LCC$")
   SET(CMAKE_REQUIRED_FLAGS "-Wall -Wformat -Wformat-security")
   #################################################################
   # Set compile flags for all build types.
@@ -126,7 +126,7 @@ IF (CMAKE_C_COMPILER_ID MATCHES "^GNU$")
   SET(CMAKE_C_FLAGS_DEBUG "${CMAKE_C_FLAGS_DEBUG} -Wshadow")
   SET(CMAKE_C_FLAGS_DEBUG "${CMAKE_C_FLAGS_DEBUG} -Wmissing-prototypes")
   SET(CMAKE_C_FLAGS_DEBUG "${CMAKE_C_FLAGS_DEBUG} -Wcast-qual")
-ENDIF (CMAKE_C_COMPILER_ID MATCHES "^GNU$")
+ENDIF (CMAKE_C_COMPILER_ID MATCHES "^GNU$" OR CMAKE_C_COMPILER_ID MATCHES "^LCC$")
 IF (CMAKE_C_COMPILER_ID MATCHES "^Clang$")
   SET(CMAKE_REQUIRED_FLAGS "-Wall -Wformat -Wformat-security")
   #################################################################
@@ -1038,7 +1038,7 @@ ENDMACRO(CHECK_CRYPTO_WIN CRYPTO_LIST)
 MACRO(CHECK_ICONV LIB TRY_ICONV_CONST)
   IF(NOT HAVE_ICONV)
     CMAKE_PUSH_CHECK_STATE()	# Save the state of the variables
-    IF (CMAKE_C_COMPILER_ID MATCHES "^GNU$" OR
+    IF (CMAKE_C_COMPILER_ID MATCHES "^GNU$" OR CMAKE_C_COMPILER_ID MATCHES "^LCC$" OR
         CMAKE_C_COMPILER_ID MATCHES "^Clang$")
       #
       # During checking iconv proto type, we should use -Werror to avoid the
@@ -1046,7 +1046,7 @@ MACRO(CHECK_ICONV LIB TRY_ICONV_CONST)
       # detection. So this needs for all build mode(even it's a release mode).
       #
       SET(CMAKE_REQUIRED_FLAGS "${CMAKE_REQUIRED_FLAGS} -Werror")
-    ENDIF (CMAKE_C_COMPILER_ID MATCHES "^GNU$" OR
+    ENDIF (CMAKE_C_COMPILER_ID MATCHES "^GNU$" OR CMAKE_C_COMPILER_ID MATCHES "^LCC$" OR
            CMAKE_C_COMPILER_ID MATCHES "^Clang$")
     IF (CMAKE_C_COMPILER_ID MATCHES "^XL$")
       SET(CMAKE_REQUIRED_FLAGS "${CMAKE_REQUIRED_FLAGS} -qhalt=w -qflag=w:w")
@@ -1335,7 +1335,7 @@ ENDIF(NOT FOUND_POSIX_REGEX_LIB AND POSIX_REGEX_LIB MATCHES "^(AUTO|LIBPCREPOSIX
 # Check functions
 #
 CMAKE_PUSH_CHECK_STATE()	# Save the state of the variables
-IF (CMAKE_C_COMPILER_ID MATCHES "^GNU$" OR
+IF (CMAKE_C_COMPILER_ID MATCHES "^GNU$" OR CMAKE_C_COMPILER_ID MATCHES "^LCC$" OR
     CMAKE_C_COMPILER_ID MATCHES "^Clang$")
   #
   # During checking functions, we should use -fno-builtin to avoid the
@@ -1343,7 +1343,7 @@ IF (CMAKE_C_COMPILER_ID MATCHES "^GNU$" OR
   # types for built-in function" caused by using -Werror option.
   #
   SET(CMAKE_REQUIRED_FLAGS "${CMAKE_REQUIRED_FLAGS} -fno-builtin")
-ENDIF (CMAKE_C_COMPILER_ID MATCHES "^GNU$" OR
+ENDIF (CMAKE_C_COMPILER_ID MATCHES "^GNU$" OR CMAKE_C_COMPILER_ID MATCHES "^LCC$" OR
        CMAKE_C_COMPILER_ID MATCHES "^Clang$")
 CHECK_SYMBOL_EXISTS(_CrtSetReportMode "crtdbg.h" HAVE__CrtSetReportMode)
 CHECK_FUNCTION_EXISTS_GLIBC(arc4random_buf HAVE_ARC4RANDOM_BUF)