diff options
Diffstat (limited to 'contrib')
| -rw-r--r-- | contrib/buildsystems/CMakeLists.txt | 592 |
1 files changed, 592 insertions, 0 deletions
diff --git a/contrib/buildsystems/CMakeLists.txt b/contrib/buildsystems/CMakeLists.txt new file mode 100644 index 0000000000..1e910d9df8 --- /dev/null +++ b/contrib/buildsystems/CMakeLists.txt @@ -0,0 +1,592 @@ +# +# Copyright (c) 2020 Sibi Siddharthan +# + +#[[ + +Instructions to run CMake: + +cmake `relative-path-to-CMakeLists.txt` -DCMAKE_BUILD_TYPE=Release +Eg. +From the root of git source tree + `cmake contrib/buildsystems/ ` +This will build the git binaries at the root + +For out of source builds, say build in 'git/git-build/' + `mkdir git-build;cd git-build; cmake ../contrib/buildsystems/` +This will build the git binaries in git-build directory + +Possible build configurations(-DCMAKE_BUILD_TYPE) with corresponding +compiler flags +Debug : -g +Release: -O3 +RelWithDebInfo : -O2 -g +MinSizeRel : -Os +empty(default) : + +NOTE: -DCMAKE_BUILD_TYPE is optional. For multi-config generators like Visual Studio +this option is ignored + +This process generates a Makefile(Linux/*BSD/MacOS) , Visual Studio solution(Windows) by default. +Run `make` to build Git on Linux/*BSD/MacOS. +Open git.sln on Windows and build Git. + +NOTE: By default CMake uses Makefile as the build tool on Linux and Visual Studio in Windows, +to use another tool say `ninja` add this to the command line when configuring. +`-G Ninja` + +]] +cmake_minimum_required(VERSION 3.14) + +#set the source directory to root of git +set(CMAKE_SOURCE_DIR ${CMAKE_CURRENT_LIST_DIR}/../..) + +find_program(SH_EXE sh) + +#Create GIT-VERSION-FILE using GIT-VERSION-GEN +if(NOT EXISTS ${CMAKE_SOURCE_DIR}/GIT-VERSION-FILE) + message("Generating GIT-VERSION-FILE") + execute_process(COMMAND ${SH_EXE} ${CMAKE_SOURCE_DIR}/GIT-VERSION-GEN + WORKING_DIRECTORY ${CMAKE_SOURCE_DIR}) +endif() + +#Parse GIT-VERSION-FILE to get the version +file(STRINGS ${CMAKE_SOURCE_DIR}/GIT-VERSION-FILE git_version REGEX "GIT_VERSION = (.*)") +string(REPLACE "GIT_VERSION = " "" git_version ${git_version}) +string(FIND ${git_version} "GIT" location) +if(location EQUAL -1) + string(REGEX MATCH "[0-9]*\\.[0-9]*\\.[0-9]*" git_version ${git_version}) +else() + string(REGEX MATCH "[0-9]*\\.[0-9]*" git_version ${git_version}) + string(APPEND git_version ".0") #for building from a snapshot +endif() + +project(git + VERSION ${git_version} + LANGUAGES C) + + +#macros for parsing the Makefile for sources +macro(parse_makefile_for_sources list_var regex) + file(STRINGS ${CMAKE_SOURCE_DIR}/Makefile ${list_var} REGEX "^${regex} \\+=(.*)") + string(REPLACE "${regex} +=" "" ${list_var} ${${list_var}}) + string(REPLACE "$(COMPAT_OBJS)" "" ${list_var} ${${list_var}}) #remove "$(COMPAT_OBJS)" This is only for libgit. + string(STRIP ${${list_var}} ${list_var}) #remove trailing/leading whitespaces + string(REPLACE ".o" ".c;" ${list_var} ${${list_var}}) #change .o to .c, ; is for converting the string into a list + list(TRANSFORM ${list_var} STRIP) #remove trailing/leading whitespaces for each element in list + list(REMOVE_ITEM ${list_var} "") #remove empty list elements +endmacro() + +include(CheckTypeSize) +include(CheckCSourceRuns) +include(CheckCSourceCompiles) +include(CheckIncludeFile) +include(CheckFunctionExists) +include(CheckSymbolExists) +include(CheckStructHasMember) + +find_package(ZLIB REQUIRED) +find_package(CURL) +find_package(EXPAT) +find_package(Iconv) +find_package(Intl) + +if(NOT Intl_FOUND) + add_compile_definitions(NO_GETTEXT) + if(NOT Iconv_FOUND) + add_compile_definitions(NO_ICONV) + endif() +endif() + +include_directories(SYSTEM ${ZLIB_INCLUDE_DIRS}) +if(CURL_FOUND) + include_directories(SYSTEM ${CURL_INCLUDE_DIRS}) +endif() +if(EXPAT_FOUND) + include_directories(SYSTEM ${EXPAT_INCLUDE_DIRS}) +endif() +if(Iconv_FOUND) + include_directories(SYSTEM ${Iconv_INCLUDE_DIRS}) +endif() +if(Intl_FOUND) + include_directories(SYSTEM ${Intl_INCLUDE_DIRS}) +endif() + +#default behaviour +include_directories(${CMAKE_SOURCE_DIR}) +add_compile_definitions(GIT_HOST_CPU="${CMAKE_SYSTEM_PROCESSOR}") +add_compile_definitions(SHA256_BLK INTERNAL_QSORT RUNTIME_PREFIX) +add_compile_definitions(NO_OPENSSL SHA1_DC SHA1DC_NO_STANDARD_INCLUDES + SHA1DC_INIT_SAFE_HASH_DEFAULT=0 + SHA1DC_CUSTOM_INCLUDE_SHA1_C="cache.h" + SHA1DC_CUSTOM_INCLUDE_UBC_CHECK_C="git-compat-util.h" ) +list(APPEND compat_SOURCES sha1dc_git.c sha1dc/sha1.c sha1dc/ubc_check.c block-sha1/sha1.c sha256/block/sha256.c compat/qsort_s.c) + + +add_compile_definitions(PAGER_ENV="LESS=FRX LV=-c" + ETC_GITATTRIBUTES="etc/gitattributes" + ETC_GITCONFIG="etc/gitconfig" + GIT_EXEC_PATH="libexec/git-core" + GIT_LOCALE_PATH="share/locale" + GIT_MAN_PATH="share/man" + GIT_INFO_PATH="share/info" + GIT_HTML_PATH="share/doc/git-doc" + DEFAULT_HELP_FORMAT="html" + DEFAULT_GIT_TEMPLATE_DIR="share/git-core/templates" + GIT_VERSION="${PROJECT_VERSION}.GIT" + GIT_USER_AGENT="git/${PROJECT_VERSION}.GIT" + BINDIR="bin" + GIT_BUILT_FROM_COMMIT="") + +set(FALLBACK_RUNTIME_PREFIX /home/$ENV{USER}) +add_compile_definitions(FALLBACK_RUNTIME_PREFIX="${FALLBACK_RUNTIME_PREFIX}") + +add_compile_definitions(PROCFS_EXECUTABLE_PATH="/proc/self/exe" HAVE_DEV_TTY ) +list(APPEND compat_SOURCES unix-socket.c) + +#header checks +check_include_file(libgen.h HAVE_LIBGEN_H) +if(NOT HAVE_LIBGEN_H) + add_compile_definitions(NO_LIBGEN_H) + list(APPEND compat_SOURCES compat/basename.c) +endif() + +check_include_file(sys/sysinfo.h HAVE_SYSINFO) +if(HAVE_SYSINFO) + add_compile_definitions(HAVE_SYSINFO) +endif() + +check_c_source_compiles(" +#include <alloca.h> + +int main(void) +{ + char *p = (char *) alloca(2 * sizeof(int)); + + if (p) + return 0; + return 0; +}" +HAVE_ALLOCA_H) +if(HAVE_ALLOCA_H) + add_compile_definitions(HAVE_ALLOCA_H) +endif() + +check_include_file(strings.h HAVE_STRINGS_H) +if(HAVE_STRINGS_H) + add_compile_definitions(HAVE_STRINGS_H) +endif() + +check_include_file(sys/select.h HAVE_SYS_SELECT_H) +if(NOT HAVE_SYS_SELECT_H) + add_compile_definitions(NO_SYS_SELECT_H) +endif() + +check_include_file(sys/poll.h HAVE_SYS_POLL_H) +if(NOT HAVE_SYS_POLL_H) + add_compile_definitions(NO_SYS_POLL_H) +endif() + +check_include_file(poll.h HAVE_POLL_H) +if(NOT HAVE_POLL_H) + add_compile_definitions(NO_POLL_H) +endif() + +check_include_file(inttypes.h HAVE_INTTYPES_H) +if(NOT HAVE_INTTYPES_H) + add_compile_definitions(NO_INTTYPES_H) +endif() + +check_include_file(paths.h HAVE_PATHS_H) +if(HAVE_PATHS_H) + add_compile_definitions(HAVE_PATHS_H) +endif() + +#function checks +set(function_checks + strcasestr memmem strlcpy strtoimax strtoumax strtoull + setenv mkdtemp poll pread memmem unsetenv hstrerror) + +foreach(f ${function_checks}) + string(TOUPPER ${f} uf) + check_function_exists(${f} HAVE_${uf}) + if(NOT HAVE_${uf}) + add_compile_definitions(NO_${uf}) + endif() +endforeach() + +if(NOT HAVE_POLL_H OR NOT HAVE_SYS_POLL_H OR NOT HAVE_POLL) + include_directories(${CMAKE_SOURCE_DIR}/compat/poll) + add_compile_definitions(NO_POLL) + list(APPEND compat_SOURCES compat/poll/poll.c) +endif() + +if(NOT HAVE_STRCASESTR) + list(APPEND compat_SOURCES compat/strcasestr.c) +endif() + +if(NOT HAVE_STRLCPY) + list(APPEND compat_SOURCES compat/strlcpy.c) +endif() + +if(NOT HAVE_STRTOUMAX) + list(APPEND compat_SOURCES compat/strtoumax.c compat/strtoimax.c) +endif() + +if(NOT HAVE_SETENV) + list(APPEND compat_SOURCES compat/setenv.c) +endif() + +if(NOT HAVE_MKDTEMP) + list(APPEND compat_SOURCES compat/mkdtemp.c) +endif() + +if(NOT HAVE_PREAD) + list(APPEND compat_SOURCES compat/pread.c) +endif() + +if(NOT HAVE_MEMMEM) + list(APPEND compat_SOURCES compat/memmem.c) +endif() + +if(NOT WIN32) + if(NOT HAVE_UNSETENV) + list(APPEND compat_SOURCES compat/unsetenv.c) + endif() + + if(NOT HAVE_HSTRERROR) + list(APPEND compat_SOURCES compat/hstrerror.c) + endif() +endif() + +check_function_exists(getdelim HAVE_GETDELIM) +if(HAVE_GETDELIM) + add_compile_definitions(HAVE_GETDELIM) +endif() + +check_function_exists(clock_gettime HAVE_CLOCK_GETTIME) +check_symbol_exists(CLOCK_MONOTONIC "time.h" HAVE_CLOCK_MONOTONIC) +if(HAVE_CLOCK_GETTIME) + add_compile_definitions(HAVE_CLOCK_GETTIME) +endif() +if(HAVE_CLOCK_MONOTONIC) + add_compile_definitions(HAVE_CLOCK_MONOTONIC) +endif() + +#check for st_blocks in struct stat +check_struct_has_member("struct stat" st_blocks "sys/stat.h" STRUCT_STAT_HAS_ST_BLOCKS) +if(NOT STRUCT_STAT_HAS_ST_BLOCKS) + add_compile_definitions(NO_ST_BLOCKS_IN_STRUCT_STAT) +endif() + +#compile checks +check_c_source_runs(" +#include<stdio.h> +#include<stdarg.h> +#include<string.h> +#include<stdlib.h> + +int test_vsnprintf(char *str, size_t maxsize, const char *format, ...) +{ + int ret; + va_list ap; + + va_start(ap, format); + ret = vsnprintf(str, maxsize, format, ap); + va_end(ap); + return ret; +} + +int main(void) +{ + char buf[6]; + + if (test_vsnprintf(buf, 3, \"%s\", \"12345\") != 5 + || strcmp(buf, \"12\")) + return 1; + if (snprintf(buf, 3, \"%s\", \"12345\") != 5 + || strcmp(buf, \"12\")) + return 1; + return 0; +}" +SNPRINTF_OK) +if(NOT SNPRINTF_OK) + add_compile_definitions(SNPRINTF_RETURNS_BOGUS) + list(APPEND compat_SOURCES compat/snprintf.c) +endif() + +check_c_source_runs(" +#include<stdio.h> + +int main(void) +{ + FILE *f = fopen(\".\", \"r\"); + + return f != NULL; +}" +FREAD_READS_DIRECTORIES_NO) +if(NOT FREAD_READS_DIRECTORIES_NO) + add_compile_definitions(FREAD_READS_DIRECTORIES) + list(APPEND compat_SOURCES compat/fopen.c) +endif() + +check_c_source_compiles(" +#include <regex.h> +#ifndef REG_STARTEND +#error oops we dont have it +#endif + +int main(void) +{ + return 0; +}" +HAVE_REGEX) +if(NOT HAVE_REGEX) + include_directories(${CMAKE_SOURCE_DIR}/compat/regex) + list(APPEND compat_SOURCES compat/regex/regex.c ) + add_compile_definitions(NO_REGEX NO_MBSUPPORT GAWK) +endif() + + +check_c_source_compiles(" +#include <stddef.h> +#include <sys/types.h> +#include <sys/sysctl.h> + +int main(void) +{ + int val, mib[2]; + size_t len; + + mib[0] = CTL_HW; + mib[1] = 1; + len = sizeof(val); + return sysctl(mib, 2, &val, &len, NULL, 0) ? 1 : 0; +}" +HAVE_BSD_SYSCTL) +if(HAVE_BSD_SYSCTL) + add_compile_definitions(HAVE_BSD_SYSCTL) +endif() + +set(CMAKE_REQUIRED_LIBRARIES ${Iconv_LIBRARIES}) +set(CMAKE_REQUIRED_INCLUDES ${Iconv_INCLUDE_DIRS}) + +check_c_source_compiles(" +#include <iconv.h> + +extern size_t iconv(iconv_t cd, + char **inbuf, size_t *inbytesleft, + char **outbuf, size_t *outbytesleft); + +int main(void) +{ + return 0; +}" +HAVE_NEW_ICONV) +if(HAVE_NEW_ICONV) + set(HAVE_OLD_ICONV 0) +else() + set(HAVE_OLD_ICONV 1) +endif() + +check_c_source_runs(" +#include <iconv.h> +#if ${HAVE_OLD_ICONV} +typedef const char *iconv_ibp; +#else +typedef char *iconv_ibp; +#endif + +int main(void) +{ + int v; + iconv_t conv; + char in[] = \"a\"; + iconv_ibp pin = in; + char out[20] = \"\"; + char *pout = out; + size_t isz = sizeof(in); + size_t osz = sizeof(out); + + conv = iconv_open(\"UTF-16\", \"UTF-8\"); + iconv(conv, &pin, &isz, &pout, &osz); + iconv_close(conv); + v = (unsigned char)(out[0]) + (unsigned char)(out[1]); + return v != 0xfe + 0xff; +}" +ICONV_DOESNOT_OMIT_BOM) +if(NOT ICONV_DOESNOT_OMIT_BOM) + add_compile_definitions(ICONV_OMITS_BOM) +endif() + +unset(CMAKE_REQUIRED_LIBRARIES) +unset(CMAKE_REQUIRED_INCLUDES) + + +#programs +set(PROGRAMS_BUILT + git git-bugreport git-credential-store git-daemon git-fast-import git-http-backend git-sh-i18n--envsubst + git-shell git-remote-testsvn git-credential-cache git-credential-cache--daemon) + +if(NOT CURL_FOUND) + list(APPEND excluded_progs git-http-fetch git-http-push) + add_compile_definitions(NO_CURL) + message(WARNING "git-http-push and git-http-fetch will not be built") +else() + list(APPEND PROGRAMS_BUILT git-http-fetch git-http-push git-imap-send git-remote-http) + if(CURL_VERSION_STRING VERSION_GREATER_EQUAL 7.34.0) + add_compile_definitions(USE_CURL_FOR_IMAP_SEND) + endif() +endif() + +if(NOT EXPAT_FOUND) + list(APPEND excluded_progs git-http-push) + add_compile_definitions(NO_EXPAT) +else() + list(APPEND PROGRAMS_BUILT git-http-push) + if(EXPAT_VERSION_STRING VERSION_LESS_EQUAL 1.2) + add_compile_definitions(EXPAT_NEEDS_XMLPARSE_H) + endif() +endif() + +list(REMOVE_DUPLICATES excluded_progs) +list(REMOVE_DUPLICATES PROGRAMS_BUILT) + + +foreach(p ${excluded_progs}) + list(APPEND EXCLUSION_PROGS --exclude-program ${p} ) +endforeach() + +#for comparing null values +list(APPEND EXCLUSION_PROGS empty) +set(EXCLUSION_PROGS_CACHE ${EXCLUSION_PROGS} CACHE STRING "Programs not built" FORCE) + +if(NOT EXISTS ${CMAKE_BINARY_DIR}/command-list.h OR NOT EXCLUSION_PROGS_CACHE STREQUAL EXCLUSION_PROGS) + list(REMOVE_ITEM EXCLUSION_PROGS empty) + message("Generating command-list.h") + execute_process(COMMAND ${SH_EXE} ${CMAKE_SOURCE_DIR}/generate-cmdlist.sh ${EXCLUSION_PROGS} command-list.txt + WORKING_DIRECTORY ${CMAKE_SOURCE_DIR} + OUTPUT_FILE ${CMAKE_BINARY_DIR}/command-list.h) +endif() + +if(NOT EXISTS ${CMAKE_BINARY_DIR}/config-list.h) + message("Generating config-list.h") + execute_process(COMMAND ${SH_EXE} ${CMAKE_SOURCE_DIR}/generate-configlist.sh + WORKING_DIRECTORY ${CMAKE_SOURCE_DIR} + OUTPUT_FILE ${CMAKE_BINARY_DIR}/config-list.h) +endif() + +include_directories(${CMAKE_BINARY_DIR}) + +#build +#libgit +parse_makefile_for_sources(libgit_SOURCES "LIB_OBJS") + +list(TRANSFORM libgit_SOURCES PREPEND "${CMAKE_SOURCE_DIR}/") +list(TRANSFORM compat_SOURCES PREPEND "${CMAKE_SOURCE_DIR}/") +add_library(libgit ${libgit_SOURCES} ${compat_SOURCES}) + +#libxdiff +parse_makefile_for_sources(libxdiff_SOURCES "XDIFF_OBJS") + +list(TRANSFORM libxdiff_SOURCES PREPEND "${CMAKE_SOURCE_DIR}/") +add_library(xdiff STATIC ${libxdiff_SOURCES}) + +#libvcs-svn +parse_makefile_for_sources(libvcs-svn_SOURCES "VCSSVN_OBJS") + +list(TRANSFORM libvcs-svn_SOURCES PREPEND "${CMAKE_SOURCE_DIR}/") +add_library(vcs-svn STATIC ${libvcs-svn_SOURCES}) + +#link all required libraries to common-main +add_library(common-main OBJECT ${CMAKE_SOURCE_DIR}/common-main.c) +target_link_libraries(common-main libgit xdiff ${ZLIB_LIBRARIES} pthread rt) +if(Intl_FOUND) + target_link_libraries(common-main ${Intl_LIBRARIES}) +endif() +if(Iconv_FOUND) + target_link_libraries(common-main ${Iconv_LIBRARIES}) +endif() + +#git +parse_makefile_for_sources(git_SOURCES "BUILTIN_OBJS") + +list(TRANSFORM git_SOURCES PREPEND "${CMAKE_SOURCE_DIR}/") +add_executable(git ${CMAKE_SOURCE_DIR}/git.c ${git_SOURCES}) +target_link_libraries(git common-main) + +add_executable(git-bugreport ${CMAKE_SOURCE_DIR}/bugreport.c) +target_link_libraries(git-bugreport common-main) + +add_executable(git-credential-store ${CMAKE_SOURCE_DIR}/credential-store.c) +target_link_libraries(git-credential-store common-main) + +add_executable(git-daemon ${CMAKE_SOURCE_DIR}/daemon.c) +target_link_libraries(git-daemon common-main) + +add_executable(git-fast-import ${CMAKE_SOURCE_DIR}/fast-import.c) +target_link_libraries(git-fast-import common-main) + +add_executable(git-http-backend ${CMAKE_SOURCE_DIR}/http-backend.c) +target_link_libraries(git-http-backend common-main) + +add_executable(git-sh-i18n--envsubst ${CMAKE_SOURCE_DIR}/sh-i18n--envsubst.c) +target_link_libraries(git-sh-i18n--envsubst common-main) + +add_executable(git-shell ${CMAKE_SOURCE_DIR}/shell.c) +target_link_libraries(git-shell common-main) + +if(CURL_FOUND) + add_library(http_obj OBJECT ${CMAKE_SOURCE_DIR}/http.c) + + add_executable(git-imap-send ${CMAKE_SOURCE_DIR}/imap-send.c) + target_link_libraries(git-imap-send http_obj common-main ${CURL_LIBRARIES}) + + add_executable(git-http-fetch ${CMAKE_SOURCE_DIR}/http-walker.c ${CMAKE_SOURCE_DIR}/http-fetch.c) + target_link_libraries(git-http-fetch http_obj common-main ${CURL_LIBRARIES}) + + add_executable(git-remote-http ${CMAKE_SOURCE_DIR}/http-walker.c ${CMAKE_SOURCE_DIR}/remote-curl.c) + target_link_libraries(git-remote-http http_obj common-main ${CURL_LIBRARIES} ) + + if(EXPAT_FOUND) + add_executable(git-http-push ${CMAKE_SOURCE_DIR}/http-push.c) + target_link_libraries(git-http-push http_obj common-main ${CURL_LIBRARIES} ${EXPAT_LIBRARIES}) + endif() +endif() + +add_executable(git-remote-testsvn ${CMAKE_SOURCE_DIR}/remote-testsvn.c) +target_link_libraries(git-remote-testsvn common-main vcs-svn) + +add_executable(git-credential-cache ${CMAKE_SOURCE_DIR}/credential-cache.c) +target_link_libraries(git-credential-cache common-main) + +add_executable(git-credential-cache--daemon ${CMAKE_SOURCE_DIR}/credential-cache--daemon.c) +target_link_libraries(git-credential-cache--daemon common-main) + + +set(git_builtin_extra + cherry cherry-pick format-patch fsck-objects + init merge-subtree restore show + stage status switch whatchanged) + +#Creating hardlinks +foreach(s ${git_SOURCES} ${git_builtin_extra}) + string(REPLACE "${CMAKE_SOURCE_DIR}/builtin/" "" s ${s}) + string(REPLACE ".c" "" s ${s}) + file(APPEND ${CMAKE_BINARY_DIR}/CreateLinks.cmake "file(CREATE_LINK git git-${s})\n") + list(APPEND git_links ${CMAKE_BINARY_DIR}/git-${s}) +endforeach() + +if(CURL_FOUND) + set(remote_exes + git-remote-https git-remote-ftp git-remote-ftps) + foreach(s ${remote_exes}) + file(APPEND ${CMAKE_BINARY_DIR}/CreateLinks.cmake "file(CREATE_LINK git-remote-http ${s})\n") + list(APPEND git_http_links ${CMAKE_BINARY_DIR}/${s}) + endforeach() +endif() + +add_custom_command(OUTPUT ${git_links} ${git_http_links} + COMMAND ${CMAKE_COMMAND} -P ${CMAKE_BINARY_DIR}/CreateLinks.cmake + DEPENDS git git-remote-http) +add_custom_target(git-links ALL DEPENDS ${git_links} ${git_http_links}) |