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e138646434
Under certain conditions*, the compiler param in the command field of
the compile_commands.json is a relative path rather than absolute. When
this happens, the built-ins detection was not successful and the
following exception was thrown:
!ENTRY org.eclipse.cdt.core 4 0 2025-02-23 20:32:10.752
!MESSAGE Error: Cannot run program "gcc": Launching failed
!STACK 0
java.io.IOException: Cannot run program "gcc": Launching failed
at org.eclipse.cdt.utils.spawner.Spawner.exec(Spawner.java:450)
at org.eclipse.cdt.utils.spawner.Spawner.<init>(Spawner.java:147)
at org.eclipse.cdt.utils.spawner.Spawner.<init>(Spawner.java:134)
at org.eclipse.cdt.utils.spawner.ProcessFactory$Builder.start(ProcessFactory.java:273)
at org.eclipse.cdt.utils.spawner.ProcessFactory.exec(ProcessFactory.java:366)
at org.eclipse.cdt.core.CommandLauncher.execute(CommandLauncher.java:189)
at org.eclipse.cdt.jsoncdb.core.internal.builtins.CompilerBuiltinsDetector.detectBuiltins(CompilerBuiltinsDetector.java:111)
at org.eclipse.cdt.jsoncdb.core.CompileCommandsJsonParser.detectBuiltins(CompileCommandsJsonParser.java:290)
at org.eclipse.cdt.jsoncdb.core.CompileCommandsJsonParser.processJsonFile(CompileCommandsJsonParser.java:193)
at org.eclipse.cdt.jsoncdb.core.CompileCommandsJsonParser.parse(CompileCommandsJsonParser.java:455)
at org.eclipse.cdt.cmake.core.CMakeBuildConfiguration.processCompileCommandsFile(CMakeBuildConfiguration.java:361)
at org.eclipse.cdt.cmake.core.CMakeBuildConfiguration.build(CMakeBuildConfiguration.java:241)
This meant that source file includes were not indexed and could not be
opened using Open Declaration (F3) and info markers of the following
type appeared in the Problems view:
gcc -E -P -dM -Wp,-v
"...extCmakegcc\\build\\cmake.run.win32.x86_64.Local\\detect_compiler_builtins.c"
Cannot run program "gcc": Launching failed
Error: Program "gcc" not found in PATH
PATH=[...]
extCmakegcc Unknown Compiler Builtins Detector Problem
gcc -E -P -dM -Wp,-v
"...extCmakegcc\\build\\cmake.run.win32.x86_64.Local\\detect_compiler_builtins.c"
Cannot run program "gcc": Launching failed
This patch fixes the environment issue for Core Build projects, by
calling ICBuildConfiguration.setBuildEnvironment(Map<String, String>) as
part of the built-ins detection setup, thereby supporting absolute and
relative compiler paths.
Addresses Issue: CDT CMake Improvements #1000, IDE-82683-REQ-011 Source
code navigation and Built-ins detection
*: CMake produces relative compiler path
When the CMAKE_<LANG>_COMPILER variable (eg CMAKE_C_COMPILER) is set in
the CMakeLists.txt *after* the project() or language commands, it causes
a relative path to be used. For example, in the CMakeLists.txt below,
gcc is set after project() command:
cmake_minimum_required(VERSION 3.10)
project (track2)
set(CMAKE_C_COMPILER gcc)
add_executable(${PROJECT_NAME} track2.c)
The above script creates a relative compiler path in
compile_commands.json:
"command": "gcc -O3 -DNDEBUG -o ...
Normally the CMAKE_C_COMPILER variable should be set before the
project() comannd.
"command": "C:\\msys64\\mingw64\\bin\\c++.exe -IC...
Co-authored-by: Jonah Graham <jonah@kichwacoders.com>
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|---|---|---|
| .. | ||
| aggregator | ||
| org.eclipse.cdt.jsoncdb.arm | ||
| org.eclipse.cdt.jsoncdb.arm.tests | ||
| org.eclipse.cdt.jsoncdb.core | ||
| org.eclipse.cdt.jsoncdb.core.doc | ||
| org.eclipse.cdt.jsoncdb.core.tests | ||
| org.eclipse.cdt.jsoncdb.core.ui | ||
| org.eclipse.cdt.jsoncdb.freescale | ||
| org.eclipse.cdt.jsoncdb.freescale.tests | ||
| org.eclipse.cdt.jsoncdb.hpenonstop | ||
| org.eclipse.cdt.jsoncdb.hpenonstop.tests | ||
| org.eclipse.cdt.jsoncdb.intel | ||
| org.eclipse.cdt.jsoncdb.microsoft | ||
| org.eclipse.cdt.jsoncdb.microsoft.tests | ||
| org.eclipse.cdt.jsoncdb.nvidia | ||
| org.eclipse.cdt.jsoncdb.nvidia.tests | ||
| pom.xml | ||