[libc] Add "include/" to the LLVM include directories (#83199)

Summary:
Recent changes added an include path in the float128 type that used the
internal `libc` path to find the macro. This doesn't work once it's
installed because we need to search from the root of the install dir.
This patch adds "include/" to the include path so that our inclusion
of installed headers always match the internal use.

3 files changed, 9 insertions, 1 deletions

diff --git a/libc/cmake/modules/LLVMLibCObjectRules.cmake b/libc/cmake/modules/LLVMLibCObjectRules.cmake
index 0649e9f..5469799 100644
--- a/libc/cmake/modules/LLVMLibCObjectRules.cmake
+++ b/libc/cmake/modules/LLVMLibCObjectRules.cmake
@@ -59,6 +59,7 @@ function(create_object_library fq_target_name)
   )
   target_include_directories(${fq_target_name} SYSTEM PRIVATE ${LIBC_INCLUDE_DIR})
   target_include_directories(${fq_target_name} PRIVATE ${LIBC_SOURCE_DIR})
+  target_include_directories(${fq_target_name} PRIVATE ${LIBC_SOURCE_DIR}/include)
   target_compile_options(${fq_target_name} PRIVATE ${compile_options})
 
   # The NVPTX target is installed as LLVM-IR but the internal testing toolchain
@@ -73,6 +74,7 @@ function(create_object_library fq_target_name)
     )
     target_include_directories(${internal_target_name} SYSTEM PRIVATE ${LIBC_INCLUDE_DIR})
     target_include_directories(${internal_target_name} PRIVATE ${LIBC_SOURCE_DIR})
+    target_include_directories(${internal_target_name} PRIVATE ${LIBC_SOURCE_DIR}/include)
     target_compile_options(${internal_target_name} PRIVATE ${compile_options}
                            -fno-lto -march=${LIBC_GPU_TARGET_ARCHITECTURE})
   endif()
@@ -279,6 +281,7 @@ function(create_entrypoint_object fq_target_name)
   target_compile_options(${internal_target_name} BEFORE PRIVATE ${common_compile_options})
   target_include_directories(${internal_target_name} SYSTEM PRIVATE ${LIBC_INCLUDE_DIR})
   target_include_directories(${internal_target_name} PRIVATE ${LIBC_SOURCE_DIR})
+  target_include_directories(${internal_target_name} PRIVATE ${LIBC_SOURCE_DIR}/include)
   add_dependencies(${internal_target_name} ${full_deps_list})
   target_link_libraries(${internal_target_name} ${full_deps_list})
 
@@ -300,6 +303,7 @@ function(create_entrypoint_object fq_target_name)
   target_compile_options(${fq_target_name} BEFORE PRIVATE ${common_compile_options} -DLIBC_COPT_PUBLIC_PACKAGING)
   target_include_directories(${fq_target_name} SYSTEM PRIVATE ${LIBC_INCLUDE_DIR})
   target_include_directories(${fq_target_name} PRIVATE ${LIBC_SOURCE_DIR})
+  target_include_directories(${fq_target_name} PRIVATE ${LIBC_SOURCE_DIR}/include)
   add_dependencies(${fq_target_name} ${full_deps_list})
   target_link_libraries(${fq_target_name} ${full_deps_list})
 
diff --git a/libc/cmake/modules/LLVMLibCTestRules.cmake b/libc/cmake/modules/LLVMLibCTestRules.cmake
index 836e15d..5981d42 100644
--- a/libc/cmake/modules/LLVMLibCTestRules.cmake
+++ b/libc/cmake/modules/LLVMLibCTestRules.cmake
@@ -184,6 +184,7 @@ function(create_libc_unittest fq_target_name)
   )
   target_include_directories(${fq_build_target_name} SYSTEM PRIVATE ${LIBC_INCLUDE_DIR})
   target_include_directories(${fq_build_target_name} PRIVATE ${LIBC_SOURCE_DIR})
+  target_include_directories(${fq_build_target_name} PRIVATE ${LIBC_SOURCE_DIR}/include)
   target_compile_options(${fq_build_target_name} PRIVATE ${compile_options})
 
   if(NOT LIBC_UNITTEST_CXX_STANDARD)
@@ -317,6 +318,7 @@ function(add_libc_fuzzer target_name)
   )
   target_include_directories(${fq_target_name} SYSTEM PRIVATE ${LIBC_INCLUDE_DIR})
   target_include_directories(${fq_target_name} PRIVATE ${LIBC_SOURCE_DIR})
+  target_include_directories(${fq_target_name} PRIVATE ${LIBC_SOURCE_DIR}/include)
 
   target_link_libraries(${fq_target_name} PRIVATE
     ${link_object_files}
@@ -457,6 +459,7 @@ function(add_integration_test test_name)
       PROPERTIES RUNTIME_OUTPUT_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR})
   target_include_directories(${fq_build_target_name} SYSTEM PRIVATE ${LIBC_INCLUDE_DIR})
   target_include_directories(${fq_build_target_name} PRIVATE ${LIBC_SOURCE_DIR})
+  target_include_directories(${fq_build_target_name} PRIVATE ${LIBC_SOURCE_DIR}/include)
 
   _get_hermetic_test_compile_options(compile_options "${INTEGRATION_TEST_COMPILE_OPTIONS}")
   target_compile_options(${fq_build_target_name} PRIVATE ${compile_options})
@@ -632,6 +635,7 @@ function(add_libc_hermetic_test test_name)
   _get_hermetic_test_compile_options(compile_options "${HERMETIC_TEST_COMPILE_OPTIONS}")
   target_include_directories(${fq_build_target_name} SYSTEM PRIVATE ${LIBC_INCLUDE_DIR})
   target_include_directories(${fq_build_target_name} PRIVATE ${LIBC_SOURCE_DIR})
+  target_include_directories(${fq_build_target_name} PRIVATE ${LIBC_SOURCE_DIR}/include)
   _get_hermetic_test_compile_options(compile_options "${HERMETIC_TEST_COMPILE_OPTIONS}")
   target_compile_options(${fq_build_target_name} PRIVATE ${compile_options})
 
diff --git a/libc/cmake/modules/compiler_features/check_fixed_point.cpp b/libc/cmake/modules/compiler_features/check_fixed_point.cpp
index a519269..9199340 100644
--- a/libc/cmake/modules/compiler_features/check_fixed_point.cpp
+++ b/libc/cmake/modules/compiler_features/check_fixed_point.cpp
@@ -1,4 +1,4 @@
-#include "include/llvm-libc-macros/stdfix-macros.h"
+#include "llvm-libc-macros/stdfix-macros.h"
 
 #ifndef LIBC_COMPILER_HAS_FIXED_POINT
 #error unsupported