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llvm-project/libc/lib/CMakeLists.txt

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Add few docs and implementation of strcpy and strcat. Summary: This patch illustrates some of the features like modularity we want in the new libc. Few other ideas like different kinds of testing, redirectors etc are not yet present. Reviewers: dlj, hfinkel, theraven, jfb, alexshap, jdoerfert Subscribers: mgorny, dexonsmith, llvm-commits Tags: #llvm Differential Revision: https://reviews.llvm.org/D67867 llvm-svn: 373764
2019-10-05 01:30:54 +08:00
add_entrypoint_library(
llvmlibc
DEPENDS
[libc][NFC] Merge llvmlibc and llvmlibm targets in to a single target. The single target is called llvmlibc. We can add back smaller libm and other targets in future if required.
2021-02-24 13:19:05 +08:00
${TARGET_LLVMLIBC_ENTRYPOINTS}
Illustrate a redirector using the example of round function from math.h. Setup demonstrated in this patch is only for ELF-ish platforms. Also note: 1. Use of redirectors is a temporary scheme. They will be removed once LLVM-libc has implementations for the redirected functions. 2. Redirectors are optional. One can choose to not include them in the LLVM-libc build for their platform. 3. Even with redirectors used, we want to link to the system libc dynamically. Reviewers: dlj, hfinkel, jakehehrlich, phosek, stanshebs, theraven, alexshap Subscribers: mgorny, libc-commits Tags: #libc-project Differential Revision: https://reviews.llvm.org/D69020
2019-10-16 04:25:36 +08:00
)
[libc] Add a target "install-llvmlibc" to install LLVM libc static archive.
2021-03-20 12:50:48 +08:00
if(LLVM_ENABLE_PER_TARGET_RUNTIME_DIR)
set(LIBC_INSTALL_LIBRARY_DIR lib${LLVM_LIBDIR_SUFFIX}/${LLVM_DEFAULT_TARGET_TRIPLE})
else()
set(LIBC_INSTALL_LIBRARY_DIR lib${LLVM_LIBDIR_SUFFIX})
endif()
install(
TARGETS llvmlibc
Remove `LIBC_INSTALL_PREFIX` This matches the decision made in D99697. It also shouldn't reintroduce the issue fixed in D99636. The variable was originally introduced in b22f448c21e718a3b6219df89169f38d436189c6 but is not essential to that change. Once we finish adding `GnuInstallDirs` support in D100810 and D99484, setting `CMAKE_INSTALL_LIBDIR` would also work to change the installation directory (though for more than libc). `GnuInstallDirs` support also brings up an issue which is avoided if variables like `LIBC_INSTALL_PREFIX` don't exist. Because the `GnuInstallDirs` variables can be absolute paths, it is a bit unclear how the per-project prefixes would work: does the project-agnostic role-specific variable (e.g. `CMAKE_INSTALL_LIBDIR`), or project-specfic role-agnostic (e.g. `LIBC_INSTALL_PREFIX`) take priority? Each is more specific than the other on one axis, but not the other. Reviewed By: phosek Differential Revision: https://reviews.llvm.org/D105740
2021-07-03 13:18:37 +08:00
ARCHIVE DESTINATION "${LIBC_INSTALL_LIBRARY_DIR}"
[libc] Add a target "install-llvmlibc" to install LLVM libc static archive.
2021-03-20 12:50:48 +08:00
COMPONENT llvmlibc
)
add_custom_target(
install-llvmlibc
DEPENDS llvmlibc
COMMAND "${CMAKE_COMMAND}" -DCMAKE_INSTALL_COMPONENT=llvmlibc
-P "${LIBC_BINARY_DIR}/cmake_install.cmake"
)